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 UNITED
STATES

 SECURITIES
AND EXCHANGE COMMISSION

 Washington,
D.C. 20549

 FORM

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)

 OF
THE SECURITIES EXCHANGE ACT OF 1934

 For
the fiscal year ended December 31, 2023

 OR

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)

 OF
THE SECURITIES EXCHANGE ACT OF 1934

 For
the transition period from ___________ to ___________

 Commission
file number 1-38519

 AgeX
Therapeutics, Inc.

 (Exact
name of registrant as specified in its charter)

 Delaware

 82-1436829

 (State
 or other jurisdiction of

 incorporation
 or organization)

 (I.R.S.
 Employer

 Identification
 No.)

 1101
Marina Village Parkway, Suite 201

 Alameda,
 California 94501

 (Address
of principal executive offices) (Zip Code)

 Registrant's
telephone number, including area code: (510) 671-8370

 Securities
registered pursuant to Section 12(b) of the Act:

 Title
 of each class

 Trading
 Symbol

 Name
 of exchange on which registered

 Common
 Stock, par value $0.0001 per share

 AGE

 NYSE
 American

 Securities
registered pursuant to Section 12(g) of the Act: None

by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes No

by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes No

by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange
Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2)
has been subject to such filing requirements for the past 90 days. Yes No

by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule
405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant
was required to submit such files). Yes No

by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting
company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer,"
"smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

 Large
 accelerated filer

 Accelerated
 filer

 Non-accelerated
 filer

 Smaller
 reporting company

 Emerging
 growth company

 If
an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying
with any new or revised financial accounting standards provided to Section 13(a) of the Exchange Act.

by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness
of internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public
accounting firm that prepared or issued its audit report.

 If
securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant
included in the filing reflect the correction of an error to previously issued financial statements.

by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation
received by any of the registrant's executive officers during the relevant recovery period pursuant to §240.10D-1(b).

by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act): Yes No

 The
approximate aggregate market value of shares of voting common stock held by non-affiliates computed by reference to the price at which
shares of common stock were last sold as of June 30, 2023 was $ 18.7 million. Shares held by each executive officer and director and by
each person who beneficially owns more than 5% of the outstanding common stock have been excluded in that such persons may under certain
circumstances be deemed to be affiliates. This determination of affiliate status is not necessarily a conclusive determination for other
purposes.

 As
of March 14, 2024, there were outstanding 2,500,664
shares of common stock, par value $0.0001
per share.

 DOCUMENTS
INCORPORATED BY REFERENCE

 None

 AgeX
Therapeutics, Inc.

 Table
of Contents

 Page

 Item
 1.

 Business

 Item
 1A.

 Risk Factors

 Item
 1B.

 Unresolved Staff Comments

 Item
 1C

 Cybersecurity

 Item
 2.

 Properties

 Item
 3.

 Legal Proceedings

 Item
 4.

 Mine Safety Disclosures

 Item
 5.

 Market for Registrant's Common Equity, Related Stockholder Matters, and Issuer Purchases of Equity Securities

 Item
 6.

 Reserved

 Item
 7.

 Management's Discussion and Analysis of Financial Condition and Results of Operations

 Item
 7A.

 Quantitative and Qualitative Disclosures about Market Risk

 Item
 8.

 Financial Statements and Supplementary Data

 Item
 9.

 Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

 Item
 9A.

 Controls and Procedures

 Item
 9B.

 Other Information

 Item
 9C.

 Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

 Item
 10.

 Directors, Executive Officers, and Corporate Governance

 Item
 11.

 Executive Compensation

 Item
 12.

 Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

 Item
 13.

 Certain Relationships and Related Transactions, and Director Independence

 Item
 14.

 Principal Accounting Fees and Services

 Item
 15.

 Exhibits and Financial Statement Schedules

 Item
 16.

 Form 10-K Summary

 Signatures

 IMPORTANT
PRELIMINARY NOTE

 Planned
Merger with Serina Therapeutics, Inc. and Related Transactions

 On
August 29, 2023, AgeX entered into an Agreement and Plan of Merger and Reorganization (the "Merger Agreement") with Serina
Therapeutics, Inc. ("Serina"), and Canaria Transaction Corporation, a wholly owned subsidiary of AgeX ("Merger Sub").
Upon the terms and subject to the satisfaction of the conditions described in the Merger Agreement, Merger Sub will be merged with and
into Serina, with Serina surviving as a wholly owned subsidiary of AgeX (the "Merger"). At a special meeting of AgeX stockholders
on March 14, 2024 (the "Special Meeting"), AgeX stockholders approved certain proposals required for consummation of the
Merger pursuant to the terms of the Merger Agreement. Serina stockholders have also approved the Merger. There is no assurance that all conditions to the Merger will be met or waiver and that the Merger will be consummated.
AgeX stockholders will face a number of risks related to the terms of the Merger Agreement and the Merger, some of which risks are described
in this Annual Report on Form 10-K ("Report"). References to the "Combined Company" in this Report mean AgeX
after the Merger through which AgeX will have acquired Serina.

 On
March 14, 2024 AgeX effected a 1 for 35.17 reverse stock split of its common stock (the "Reverse Stock Split") by filing
an amendment to its certificate of incorporation, as approved by AgeX stockholders at the Special Meeting. The Reverse Stock Split resulted
in approximately 2,500,000 shares of AgeX common stock being outstanding immediately upon the filing of the amendment to the certificate
of incorporation. Except for references to authorized but unissued shares of AgeX common stock, and except as may be otherwise stated
in the notes to financial statements, numbers of shares of AgeX common stock issued and outstanding, or issuable upon the exercise of
options or warrants or upon conversion of convertible indebtedness, and AgeX common stock prices, referenced in this Report reflect the
effect of the Reverse Stock Split, and such amounts shown in the case of historical information, including amounts shown in the consolidated
financial statements and notes thereto, have been retroactively adjusted to reflect the effect of the Reverse Stock Split.

 On
March 19, 2024, AgeX issued to each holder of AgeX common stock as of the dividend record date, March 18, 2024, three warrants
("Post-Merger Warrants") for each five shares of AgeX common stock held by such stockholder. Each Post-Merger Warrant will
be exercisable for one unit of AgeX ("AgeX Unit") at a price equal to $13.20 per unit and will expire on July 31, 2025. Each
AgeX Unit will consist of (i) one share of AgeX common stock and (ii) one warrant ("Incentive Warrant"). Each Incentive Warrant
will be exercisable for one share of AgeX common stock at a price equal to $18.00 per warrant and will expire on the four-year anniversary
of the closing date of the Merger.

 Immediately
following the Merger, equity holders of Serina immediately prior to the closing of the Merger are expected to own approximately 75% of
the outstanding shares of common stock of the Combined Company, and stockholders of AgeX immediately prior to the closing of the Merger
are expected to own approximately 25% of the outstanding shares of common stock of the Combined Company, in each case, on a pro forma
fully diluted basis, subject to certain assumptions and exclusions, including the Actual Closing Price (as defined in the Merger Agreement)
of AgeX common stock being equal to or greater than $12.00 per share, giving effect to the Reverse Stock Split and excluding the impact
of any Post-Merger Warrant, Incentive Warrant or the issuance of any share of AgeX common stock upon exercise of any Post-Merger Warrant
or Incentive Warrant.

 Concurrently
with the execution of the Merger Agreement, AgeX, Serina, and AgeX's controlling stockholder Juvenescence Limited ("Juvenescence")
entered into a Side Letter, which will become effective immediately prior to the closing of the Merger. The Side Letter provides, among
other things, that (i) effective immediately before the consummation of the Merger, Juvenescence will cancel all out of the money AgeX
warrants held by Juvenescence; (ii) Juvenescence will exercise all Post-Merger Warrants it holds to provide the Combined Company an additional
$15 million in capital according to the following schedule: (x) at least one-third on or before May 31, 2024, (y) at least one-third
on or before November 30, 2024, and (z) at least one-third on or before June 30, 2025; (iii) Juvenescence will not sell any shares of
AgeX Series A Preferred Stock or AgeX Series B Preferred Stock and will take all actions necessary to convert all of such Preferred Stock
into AgeX common stock before a Reverse Stock Split that will occur before the Merger; (iv) Juvenescence will release all security interests,
guarantees, pledges, assignments and other forms of collateral that it may have in AgeX's assets pursuant to the terms of Juvenescence
loans to AgeX; and (v) Juvenescence will consent to a newly formed subsidiary of AgeX assuming AgeX's obligations with respect
to loan agreements and promissory notes governing loans payable to Juvenescence, including obligations for amounts currently owed and
future advances of loan funds, and Juvenescence shall release AgeX from those loan obligations. Juvenescence's covenant regarding
retaining ownership of and converting the Preferred Stock into AgeX common stock has been satisfied through the conversion of the Preferred
Stock into AgeX common stock on February 1, 2024.

 Prior
to the closing of the Merger, all assets of AgeX other than certain "Legacy Assets" will be transferred into a recently
formed subsidiary of AgeX "UniverXome Bioengineering, Inc. ("UniverXome"). In consideration of the transfer of
such assets, UniverXome will assume (i) all indebtedness of AgeX issued to Juvenescence that has not been previously
converted into AgeX Series A Preferred Stock or AgeX Series B Preferred Stock, which will be secured by the Legacy Assets and (ii)
all other liabilities of AgeX in existence as of the effective time of the Merger (other than certain transaction expenses related
to the Merger).

 Serina
currently has a pipeline of small molecule candidates targeting central nervous system ("CNS") indications, enabled by the
company's proprietary POZ Platform TM delivery technology. In addition to advancing Serina's wholly owned pipeline
assets, Serina is working with pharma partners currently advancing pre-clinical studies exploring POZ polymer lipid-nanoparticles ("LNPs")
in next generation LNP delivered RNA vaccines. In addition, Serina is advancing a lead drug candidate, SER-252 (POZ-apomorphine) for
the treatment of advanced Parkinson's Disease through pre-clinical studies towards the goal of an investigational new drug submission
or "IND" to the Food and Drug Administration for the initiation of a Phase I clinical trial during the fourth quarter of
2024. Serina has two other pipeline assets that are positioned to enter IND enabling studies, SER-227 (POZ-buprenorphine) for certain
post-operative pain indications, and SER-228 (POZ-cannabidiol) for treatment refractory epilepsy indications. Serina is also focused
on expanding its LNP and anti-body drug conjugate partnering collaborations.

 If
the Merger is completed, the Combined Company will primarily focus on developing Serina's product candidates and it is anticipated
that the Combined Company will not continue to develop AgeX product candidates, other than potentially the development program of NeuroAirmid
Therapeutics, Inc. described elsewhere in this Report. If the Merger is not completed, we expect AgeX to continue to execute on its current
business strategies described under the section titled " Pre-Merger Business Strategy " below while seeking out and
evaluating potential strategic alternatives with respect to our assets and development programs, which may include a merger, business
combination, investment into AgeX, sale or other disposition of assets or other strategic transaction. In such case, we may not be successful
in executing such strategies or identifying or implementing any such strategic alternatives, and there is a risk that Juvenescence may
decide to stop funding our operations, which would likely result in our delisting and dissolution.

 Summary
of Risk Factors

 Below
is a summary of the material factors that make an investment in our common shares speculative or risky. This summary does not address
all of the risks that we face. Additional discussion of the risks summarized in this risk factor summary, and other risks that we face,
can be found below under the heading "Risk Factors" in Item 1A of Part I of this Report and should be carefully considered,
together with other information in this Report and our other filings with the Securities and Exchange Commission (the "SEC")
before making investment decisions regarding our common shares.

 Risks
Related to Our Financial Condition and Capital Resources

 AgeX
 needs additional financing to execute its operating plan and continue to operate;

 As
 a discovery-stage development company with incurred operating losses and limited capital resources, AgeX anticipates that it will
 incur continued losses for the foreseeable future and will need to continue to raise capital to finance our operations and is unable
 to predict whether it will achieve or sustain profitability;

 AgeX
 is highly leveraged, carrying a significant amount of indebtedness, including indebtedness secured by its assets, that will become
 due and payable over the next three years and there is no assurance that AgeX will be able to refinance those obligations as they
 become due;

 The
 terms of our loans from Juvenescence and a related Security Agreement could make it more difficult for us to raise additional capital
 from other sources;

 Raising
 additional capital may cause dilution to our stockholders, restrict our operations or require us to relinquish rights to our technologies
 or product candidates;

 Unless
 AgeX common stock continues to be listed on a national securities exchange, it will become subject to "penny stock" rules
 that impose restrictive sales practice requirements;

 Delays
 in, or failing to complete the Merger could materially and adversely affect AgeX's results of operations, business, financial
 condition or stock price;

 If
 the Merger is not approved or does not occur, AgeX may not be successful in the execution of its current business strategies or identifying
 and implementing any strategic alternatives with respect to its assets and development programs, and any future strategic alternatives
 could have negative consequences;

 As
 a major stockholder and creditor of AgeX, Juvenescence, will be able to substantially influence AgeX and exert control over matters
 subject to stockholder approval; and

 We
 are a discovery-stage development company with limited capital resources and have incurred
 operating losses since our inception. We anticipate that we will incur continued losses for
 the foreseeable future and will need to continue to raise capital to finance our operations,
 and we do not know if we will ever attain profitability.

 The
 report of our independent registered public accounting firm expresses substantial doubt about
 our ability to continue as a going concern. We need additional financing to execute
 our operating plan and continue to operate as a going concern.

 We
 are highly leveraged, carrying a significant amount of indebtedness, including indebtedness
 secured by our assets, that will become due and payable over the next three years and there
 is no assurance that we will be able to refinance those obligations as they become due.

 The
 terms of our outstanding loans from Juvenescence and a related Amended and Restated Security
 Agreement with Juvenescence could make it more difficult for us to raise additional capital
 from other sources.

 Raising
 additional capital may cause dilution to our stockholders, restrict our operations or require
 us to relinquish rights to our technologies or product candidates.

 Risks
Related to Our Relationship with Juvenescence

 Conflicts
 of interest may arise from our relationship with Juvenescence, which owns approximately 75.6%
 of our common stock and is a significant creditor and will be able to substantially influence
 us and exert control over matters subject to stockholder approval and the election of directors
 prior to the Merger.

 Risks
Related to the Merger

 The
 relative proportion of the Combined Company that AgeX stockholders will own immediately following the closing of the Merger is not
 adjustable based on the market price of AgeX common stock unless the Actual Closing Price of AgeX common stock, determined in the
 manner provided in the Merger Agreement, is less than $12.00 per share. If the Actual Closing Price of AgeX common stock is less
 than $12.00 per share, AgeX has the option to issue additional AgeX common stock to Serina stockholders in the amount necessary to
 equal the Target Merger Consideration Minimum, determined in the manner provided in the Meger Agreement, which, in such circumstances,
 could proportionally decrease the amount of the Combined Company that AgeX stockholders would own immediately following the closing
 of the Merger. Accordingly, the Merger consideration at the closing of the Merger may have a greater or lesser value than at the
 time the Merger Agreement was signed;

 Failure
 to complete the Merger may result in AgeX or Serina paying a termination fee or reimbursement of expenses to the other party and
 could harm the common stock price of AgeX and future business and operations of each company;

 If
 the conditions to the closing of the Merger are not satisfied or waived, the Merger may not occur or the closing of the Merger could
 be delayed;

 The
 Merger may be completed even though material adverse changes may result from the announcement of the Merger, industry-wide changes
 and/or other causes;

 Some
 executive officers and directors of AgeX and Serina have interests in the Merger that are different from the respective stockholders
 of AgeX and Serina and that may influence them to support or approve the Merger without regard to the interests of the respective
 stockholders of AgeX and Serina;

 Juvenescence
 owns a significant majority of AgeX capital stock and will be able to substantially influence AgeX and exert control over the AgeX
 Proposals;

 AgeX
 stockholders may not realize a benefit from the Merger commensurate with the ownership interest dilution they will experience in
 connection with the Merger;

 If
 the Merger is not completed, the market price of AgeX common stock may decline significantly;

 The
 market price of the Combined Company's common stock following the Merger may decline as a result of the Merger;

 AgeX
 stockholder will have a reduced ownership and voting interest in, and will exercise less influence over the management of, the Combined
 Company following the closing of the Merger as compared to their current ownership and voting interest in AgeX before the Merger;

 the pendency of the Merger Agreement, AgeX may be limited in its ability to enter into a business combination with another party
 on more favorable terms because of restrictions in the Merger Agreement, which could adversely affect AgeX's business prospects;

 provisions of the Merger Agreement may discourage third parties from submitting competing proposals, including proposals that may
 be superior to the transactions contemplated by the Merger Agreement;

 the lack of a public market for Serina's capital stock makes it difficult to evaluate the fair market value of Serina's
 capital stock, the value of the AgeX common stock to be issued to Serina stockholders may be more or less than the fair market value
 of Serina common stock;

 Litigation
 has been filed and additional litigation could in the future arise in connection with the Merger, against AgeX, the AgeX Board, Serina
 or the Serina Board, which could be costly, prevent the consummation of the Merger, divert management's attention and otherwise
 materially harm AgeX's, Serina's or the Combined Company's business.

 If
 the Merger is not completed we would not be able to pursue the development and commercialization
 of Serina's technologies and product pipeline.

 If
 the Merger is not approved or does not occur, we may not be successful in the execution of
 our current business strategies or identifying and implementing any strategic alternatives
 with respect to our assets and development programs, and any future strategic alternatives
 could have negative consequences.

 Risks
Related to the Reverse Stock Split

 The
 Reverse Stock Split may not increase the Combined Company's stock price over the long-term.

 The
 Reverse Stock Split may decrease the liquidity of AgeX common stock or the Combined Company's

 The
 Reverse Stock Split may lead to a decrease in the Combined Company's overall market
 capitalization.

 Risks
Related to Our Business Operations

 Due
 to our limited financial resources, we have reduced our staffing, eliminated our research
 laboratory facilities, and eliminated in-house research and product development work. We
 will seek opportunities to outsource or license product development and commercialization
 but there is no assurance that we will be able to do so successfully.

 We
 may expend our limited resources to pursue one or more particular product candidates or indications
 and fail to pursue product candidates or indications that may be more profitable or for which
 there is a greater likelihood of success.

 We
 have not tested any of our product candidates in clinical trials. Success in early development
 and preclinical studies or clinical trials may not be indicative of results obtained in later
 preclinical studies and clinical trials.

 Our
 choice of product candidates and our development plans for our product candidates are subject
 to change based on a variety of factors, and if we abandon development of a product candidate
 we may not be able to develop or acquire a replacement product candidate.

 We
 may determine to expand our organization and obtain laboratory facilities if we are able
 to raise sufficient capital to do so, and we may experience difficulties in managing this
 growth, which could disrupt our operations.

 The
 commercial success of any of our current or future product candidates will depend upon the
 degree of market acceptance by physicians, patients, third-party payors, and others in the
 medical community.

 If
 the market opportunities for our product candidates are smaller than we believe they are,
 we may not meet our revenue expectations and, even assuming approval of a product candidate,
 our business may suffer.

 We
 will face risks related to the manufacture of medical products for any product candidates
 that we develop.

 Any
 cell-based products that receive regulatory approval may be difficult and expensive to manufacture
 on a commercial scale.

 If
 we fail to meet our obligations under license agreements, we may lose our rights to key technologies
 on which our business depends.

 The
 development and commercialization of new drugs to address obesity and type 2 diabetes may
 substantially limit or eliminate the prospects for AgeX's prospective AGEX-BAT1 product.

 Risks
Related to Our Industry

 We
 face significant competition in an environment of rapid technological change and the possibility
 that our competitors may achieve regulatory approval before us or develop therapies that
 are more advanced or effective than ours, which may harm our business and financial condition,
 and our ability to successfully market or commercialize our product candidates.

 The
 regulatory approval processes of the United States Food and Drug Administration (the "FDA")
 and comparable foreign authorities are lengthy, time consuming and inherently unpredictable,
 and if we are ultimately unable to obtain regulatory approval for our product candidates,
 our business will be substantially harmed.

 If
 we encounter difficulties enrolling patients in clinical trials, our clinical development
 activities could be delayed or otherwise adversely affected.

 Even
 if we obtain FDA approval for any of our product candidates in the United States, we may
 never obtain approval for or commercialize it in any other jurisdiction, which would limit
 our ability to realize its full market potential.

 Even
 if a product candidate receives regulatory approval, we will be subject to ongoing regulatory
 obligations and continued regulatory review, which may result in significant additional expense,
 and we may be subject to penalties if we fail to comply with regulatory requirements or experience
 unanticipated problems with our product candidates.

 Our
 product candidates may cause serious adverse events or undesirable side effects or have other
 properties which may delay or prevent their regulatory approval, limit the commercial profile
 of an approved label, or, result in significant negative consequences following marketing
 approval, if any.

 We
 face potential product liability, and, if successful claims are brought against us, we may
 incur substantial liability and costs. If the use or misuse of our product candidates harm
 patients or is perceived to harm patients even when such harm is unrelated to our product
 candidates, our regulatory approvals could be revoked or could otherwise be negatively impacted,
 and we could be subject to costly and damaging product liability claims.

 Our
 insurance policies are expensive and protect us only from some business risks, which leaves
 us exposed to significant uninsured liabilities.

 The
 price and sale of any product candidates that be marketed may be limited by health insurance
 coverage and government regulation.

 Enacted
 and future healthcare legislation, including the Affordable Care Act or ACA, may increase
 the difficulty and cost to obtain marketing approval of and commercialize our product candidates
 and may affect the prices we may set.

 Risks
Related to our Dependence on Third Parties

 We
 may become dependent on future collaborations to develop and commercialize our product candidates
 and to provide the regulatory compliance, sales, marketing, and distribution capabilities
 required for the success of our business.

 We
 have no marketing, sales, or distribution resources for the commercialization of any products
 or technologies that we might successfully develop.

 We
 do not have the ability to independently conduct clinical trials required to obtain regulatory
 approvals for our product candidates and intend to rely on third parties to conduct, supervise
 and monitor our clinical trials.

 Risks
Related to Intellectual Property

 If
 we are unable to obtain and enforce patents and to protect our trade secrets, others could
 use our technology to compete with us, which could limit opportunities for us to generate
 revenues by licensing our technology and selling our products.

 There
 is no certainty that our pending or future patent applications will result in the issuance
 of patents.

 The
 process of applying for and obtaining patents can be expensive and slow.

 Our
 patents may not protect our technologies or products from competition.

 We
 may not be able to enforce our intellectual property rights throughout the world.

 We
 may be subject to patent infringement claims that could be costly to defend, which may limit
 our ability to use disputed technologies, and which could prevent us from pursuing research
 and development or commercialization of some of our technologies or products, require us
 to pay licensing fees to have freedom to operate and/or result in monetary damages or other
 liability for us.

 Risks
Pertaining to Our Common Stock

 There
 is a limited history to the public trading of our common stock and there is no assurance
 that a market for our common stock will be sustained.

 we are engaged in the development of pharmaceutical and cell therapy products, the price
 of shares of our common stock may rise and fall rapidly.

 we do not pay dividends, our stock may not be a suitable investment for anyone who needs
 to earn dividend income.

 Securities
 analysts may not initiate coverage or continue to cover our common stock, and this may have
 a negative impact on the market price of our shares.

 You
 may experience dilution of your ownership interests if we issue additional shares of common
 stock or preferred stock.

 Unless
 our common stock continues to be listed on a national securities exchange, it will become
 subject to the so-called "penny stock" rules that impose restrictive sales practice
 requirements.

 Risks
Related to the Combined Company

 The
 Combined Company will need to raise additional financing in the future to fund its operations, which may not be available to it on
 favorable terms or at all;

 The
 market price of the Combined Company's common stock is expected to be volatile, and the market price of the common stock may
 drop following the Merger;

 The
 Combined Company will incur costs and demands upon management as a result of complying with the laws, rules and regulations affecting
 public companies;

 Anti-takeover
 provisions in the Combined Company's governance documents and under Delaware law could make an acquisition of the Combined
 Company more difficult and may prevent attempts by the Combined Company stockholders to replace or remove the Combined Company management;
 and

 If
 the Combined Company fails to attract and retain management and other key personnel, it may be unable to continue to successfully
 develop or commercialize its product candidates or otherwise implement its business plan.

 If
 the Merger is consummated, the Combined Company will face other risks that are substantially the same as or similar risks faced by
 AgeX.

 Special
Note Regarding Forward-Looking Statements

statements contained herein are forward-looking statements, within the meaning of the Private Securities Litigation Reform Act of 1995.
Any statements that are not historical fact (including, but not limited to statements that contain words such as "anticipates,"
"believes," "could," "seeks," "estimates," "expects," "intends,"
"may," "plans," "potential," "predicts," "projects," "pro forma,"
"should," "would" should also be considered to be forward-looking statements. Forward-looking statements involve
risks and uncertainties, including, without limitation, risks inherent in the development and/or commercialization of potential products,
uncertainty in the results of clinical trials or regulatory approvals, need and ability to obtain future capital, and maintenance of
intellectual property rights. Actual results may differ materially from the results anticipated in these forward-looking statements and
as such should be evaluated together with the many uncertainties that affect the businesses of AgeX, particularly those mentioned in
the cautionary statements found in AgeX's filings with the SEC. AgeX disclaims any intent or obligation to update these forward-looking
statements.

 The
forward-looking statements in this Report include, among other things, statements about:

 the
 strategies, prospects, plans, operations, expectations and objectives of management of AgeX if the Merger is not consummated or of
 the Combined Company following the closing of the Merger;

 the
 progress, scope or duration of the development of product candidates or programs;

 the
 benefits that may be derived from, or the commercial or market opportunity of, the product candidates of AgeX, Serina and the Combined
 Company;

 the
 ability of AgeX and the Combined Company to protect intellectual property rights;

 the
 ability of AgeX and the Combined Company to maintain compliance with NYSE American listing standards;

 the
 anticipated operations, financial position, losses, costs or expenses of AgeX if the Merger is not consummated or the Combined Company
 following the closing of the Merger;

 statements
 regarding future economic conditions or performance;

 statements
 concerning proposed products or product candidates;

 the
 approval and closing of the Merger, including the timing of the Merger, whether conditions to the completion of the Merger will be
 met or waived, the exchange ratio, and relative ownership levels of the Combined Company as of the closing of the Merger;

 the
 expected benefits of and potential value created by the Merger for the stockholders of AgeX; and

 statements
 of belief and any statement of assumptions underlying any of the foregoing.

 For
a discussion of the factors that may cause AgeX, Serina or the Combined Company's actual results, performance or achievements following
closing of the Merger to differ materially from any future results, performance or achievements expressed or implied in such forward-looking
statements, and for a discussion of risk associated with the ability of AgeX and Serina to complete the Merger and the effect of the
Merger on the business of AgeX, Serina and the Combined Company following the completion of the Merger, see " Risk Factors."
 Additional factors that could cause actual results to differ materially from those expressed in the forward-looking statements are
discussed in reports filed with the SEC by AgeX.

 If
any of these risks or uncertainties materializes or any of these assumptions proves incorrect, the results of AgeX, or the Combined Company
following completion of the Merger, could differ materially from the forward-looking statements. All forward-looking statements in this
Report are current only as of the date on which the statements were made. AgeX does not undertake any obligation (and expressly disclaim
any such obligation) to publicly update any forward-looking statement to reflect events or circumstances after the date on which any
statement is made or to reflect the occurrence of unanticipated events, except as required by applicable law.

 In
addition, statements that "AgeX believes" believes" and similar statements reflect AgeX's beliefs and opinions
on the relevant subject. These statements are based upon information available to AgeX as of the date of this Report, and while AgeX
believes such information forms a reasonable basis for such statements, such information may be limited or incomplete, and such statements
should not be read to indicate that AgeX has conducted an exhaustive inquiry into, or review of, all potentially available relevant information.
These statements are inherently uncertain and investors are cautioned not to unduly rely upon these statements.

 Industry
and Market Data

 This
Report contains market data and industry forecasts that were obtained from industry publications, third-party market research and publicly
available information. These publications generally state that the information contained therein has been obtained from sources believed
to be reliable. While we believe that the information from these publications is reliable, we have not independently verified such information.

 This
Report also contains estimates and other statistical data made by independent parties and by us relating to market size and growth and
other data about our industry. We obtained the industry and market data in this Report from our own research as well as from industry
and general publications, surveys and studies conducted by third parties, some of which may not be publicly available. Such data involves
a number of assumptions and limitations and contains projections and estimates of the future performance of the industries in which we
operate that are subject to a high degree of uncertainty. We caution you not to give undue weight to such projections, assumptions and
estimates.

 PART
I

 References
to " AgeX," "our" or "us" mean AgeX Therapeutics, Inc.

 In
this Annual Report on Form 10-K, the description or discussion of any contract or agreement is a summary only and is qualified in all
respects by reference to the full text of the applicable contract or agreement.

 Item
1. Business

 Development
of Our Business

the twelve months ended December 31, 2023, the following significant developments related to our business have occurred:

 On
August 29, 2023, we entered into the Merger Agreement with Serina, and a wholly owned subsidiary of AgeX ("Merger Sub").
Upon the terms and subject to the satisfaction of the conditions described in the Merger Agreement, the Merger will be consummated through
the merger of Merger Sub with and into Serina, with Serina surviving as a wholly owned subsidiary of AgeX. There is no assurance the
conditions to the Merger will be met and that the Merger will be consummated. See "IMPORANT PRELIMINARY NOTE — Planned Merger
with Serina Therapeutics, Inc. and Related Transactions," "Risk Factors," and "Directors, Executive Officers,
and Corporate Governance" in this Report for additional information about the Merger.

 Serina
currently has a pipeline of small molecule candidates targeting central nervous system ("CNS") indications, enabled by the
company's proprietary POZ Platform TM delivery technology. In addition to advancing Serina's wholly owned pipeline
assets, Serina is working with pharma partners currently advancing pre-clinical studies exploring POZ polymer lipid-nanoparticles ("LNPs")
in next generation LNP delivered RNA vaccines. In addition, Serina is advancing a lead drug candidate, SER-252 (POZ-apomorphine) for
the treatment of advanced Parkinson's Disease through pre-clinical studies towards the goal of an investigational new drug submission
or "IND" to the Food and Drug Administration for the initiation of a Phase I clinical trial during the fourth quarter of
2024. Serina has two other pipeline assets that are positioned to enter IND enabling studies, SER-227 (POZ-buprenorphine) for certain
post-operative pain indications, and SER-228 (POZ-cannabidiol) for treatment refractory epilepsy indications. Serina is also focused
on expanding its LNP and anti-body drug conjugate partnering collaborations.

 If
the Merger is completed, the Combined Company consisting of AgeX and Serina as a subsidiary after the Meger will primarily focus on developing
Serina's product candidates and it is anticipated that the Combined Company will not continue to develop the AgeX product candidates
and technologies, and will not pursue the business strategy, discussed below in this Report, other than potentially the neural stem cell
development program of NeuroAirmid Therapeutics, Inc. ("NeuroAirmid").

 In
connection with our sponsored Huntington's Disease research program at the University of California at Irvine ("UCI"),
we and certain researchers who contributed to the Huntington's Disease research work formed NeuroAirmid to pursue clinical studies
of the use of derived neural stem cell to treat that disease. The new subsidiary is still in the organizational stage and commencement
of clinical study work will depend NeuroAirmid obtaining a license from UCI to use a UCI patent and on NeuroAirmid's ability to
obtain financing through grants or third-party investment. We presently own 50% of the issued and outstanding shares of NeuroAirmid,

 Overview
of AgeX's Current, Pre-Merger Business

 We
are a biotechnology company focused on the development and commercialization of novel therapeutics targeting human aging and degenerative
diseases. Our mission is to apply our comprehensive experience in fundamental biological processes of human aging to a broad range of
age-associated medical conditions. We believe that demand for therapeutics addressing such conditions is on the rise, commensurate with
the demographic shift of aging in the United States and many other industrialized countries.

 Our
proprietary technology, based on telomerase-mediated cellular immortality and regenerative biology, allows us to utilize telomerase-expressing
regenerative pluripotent stem cells ("hES cells" or "PSCs") for the manufacture of cell-based therapies to regenerate
tissues afflicted with age-related chronic degenerative disease. We own or have licenses to a number of patents and patent applications
used in the generation of these product candidates, including intellectual property related to PureStem technology. Our technology
platform also includes UniverCyte which uses the HLA-G gene to potentially confer low immune observability to cells, so as to
suppress rejection of transplanted cells and tissues. AgeX plans to use or license the use of this patented technology to produce genetically-modified
master cell banks of pluripotent stem cells that can then be differentiated into any young cell type of the human body that now express
the immune tolerogenic molecule.

 Our
product candidates in the discovery stage include two cell-based therapies derived from telomerase-positive PSCs and two product candidates
derived from our proprietary tissue regeneration (iTR TM) technology. We have also sponsored a research program to derive neural
stem cells from PSCs to treat degenerative diseases such as Huntington's Disease. We will need to conduct or sponsor research and
development work, or license our technology to other biotechnology or pharma companies interested in furthering research and development
in order to develop these cell- and drug-based therapies, each targeting large unmet needs in age-related medicine.

 Overview
of Our Product Candidates

 Our
product pipeline includes two cell-based and two iTR-based product candidates in development.

 Our
lead cell-based therapeutic candidates in development are AGEX-BAT1 and AGEX-VASC1:

 AGEX-BAT1
 is our lead cell therapy product candidate in the discovery stage of development utilizing PSC-derived brown adipocytes for the treatment
 of certain age-related metabolic disorders such as Type II (adult-onset) diabetes and obesity.

 AGEX-VASC1
 is a cell-based therapy in the discovery stage of development comprised of young regenerative vascular-forming cells. AGEX-VASC1
 may restore vascular support in aged ischemic tissues such as in peripheral vascular disease and ischemic heart disease.

 Our
lead small molecule drug-based therapeutic candidate for iTRTM in discovery is AGEX-iTR1547 and our lead biologic candidate for iTR is
AGEX-iTR1550:

 AGEX-iTR1547
 is a drug-based formulation and AGEX-iTR1550 (also known as Renelon) is a gene delivery technology, both of which are in the
 discovery stage of development. Initial indications for use may include scarless wound repair.

 Our
research related to the reprogramming of aging has also led to novel insights into cancer. We have filed patent applications on inventions
that relate to these discoveries. These technologies may provide novel targets for cancer therapy and diagnosis. One such cancer therapeutic
in the early stages of development is designated "EPRO TM " (embryonic promoter-regulated oncolysis). EPRO is an
oncolytic gene therapy strategy that may provide a novel means of selectively destroying an array of different types of cancer cells.
Successful development of EPRO will be dependent, in part, on the availability of financing and licensing or joint development opportunities.

 Our
currently marketed research products include human embryonic stem or hES cells produced under Good Manufacturing Practice ("cGMP"
and hES-derived cells for research:

 Overview
of Our Technology Platforms

 The
technology underlying our product development programs is based on telomerase-mediated cellular immortality and regenerative biology.
By "telomerase-mediated cellular immortality" we refer to the fact that cells that express sufficient levels of a protein
called telomerase are capable of replicating without limit. By "regenerative biology," we refer to novel methods to regenerate
tissues afflicted with age-related chronic degenerative disease such as peripheral vascular disease and ischemic heart disease as well
as age-related metabolic disorders such as those associated with Type II diabetes and obesity, as well as others. We utilize telomerase-expressing
regenerative pluripotent stem cells, or PSCs, for the manufacture of cell-based therapies. We own or have licensed numerous patents and
patent applications covering methods and compositions relating to this technology platform.

 We
believe our core technology platforms provide us with a strong foundation for successfully addressing many of the diseases of ageing
by focusing on broad therapeutic applicability and commercially scalable technologies:

 1.
 PureStem: AgeX's allogeneic cell derivation and manufacturing platform, based on human embryonic progenitors, which
are cells in state of development between embryonic stem cells and adult cells. We believe PureStem has the potential to solve several
major challenges faced by the cell therapy industry by generating cellular therapeutics which would:

 be
 commercialized as "off-the-shelf" products;

 be
 pure and industrially scalable;

 have
 lower cost of goods per unit;

 be
 amenable to traditional pharmaceutical supply chain logistics;

 have
 the potential for acceptable reimbursement prices, unlike the relatively expensive autologous products; and

 have
 higher clinical adoption from expected cost savings and more simplified processes.

 In
addition, we believe PureStem cells may have advantages over mesenchymal stem cells (MSCs), which may only survive transiently in the
body and exert any short-term benefit by releasing paracrine factors, which may limit their potential of MSCx.

 MSCs
neither engraft nor become specialized cells. On the other hand, cells derived from PureStem progenitors will be engineered to be young,
not prone to the disadvantages associated with older cells, and are expected to become permanently engrafted in the body to deliver a
true regenerative outcome. To date, AgeX has isolated more than 200 cell types from PureStem.

 2.
 UniverCyte: AgeX's pioneering technology designed to genetically modify allogeneic donor cells to potentially become
hypoimmunogenic/universal, so they can potentially be transplanted into all patients in an off-the- shelf manner, without the normal
need for human leukocyte antigen (HLA) matching between donor and receipt or immunosuppression. UniverCyte utilizes a potent molecule
called HLA-G. HLA is a group of related proteins that helps the immune system distinguish the body's own proteins from proteins
made by foreign invaders such as viruses and bacteria. HLA-G's only known physiological role in nature is to prevent destruction
of a semi-allogeneic fetus by the maternal immune system. We believe that UniverCyte could potentially avoid immune rejection of transplanted
cells, solving a major challenge facing the allogeneic cell therapy industry. In addition to utilizing UniverCyte for its own
future cell therapy products, AgeX may make UniverCyte available to other cell therapy companies through licensing arrangements.

 3.
 Induced Tissue Regeneration (iTR TM): The aim of iTR is to return aged cells back to a youthful state, thereby inducing
a capacity for scarless regeneration characteristic of early developing tissues, without reverting cells to pluripotency. This technology
is sometimes referred to as "partial reprogramming" or "epigenetic reprogramming of aging." We believe this novel
approach may trigger complete regeneration of cells, and potentially even complex tissues, damaged as a result of age-related degenerative
processes or trauma. The premise behind iTR is that aging, and in turn degenerative diseases of old age, are a result of the loss of
two characteristics of cells; namely, replicative immortality and regenerative capacity. These two characteristics are present in embryonic
cells but are lost at the embryonic to fetal transition (EFT). With this loss, humans can no longer generate new cells or repair damaged
cells scarlessly and in sufficient numbers to maintain health. We discovered that cells begin expressing the gene COX7A1 at the
EFT when regeneration is commonly lost. Therefore, we believe the gene may be a key inhibitor of cellular regeneration. For example,
we have discovered that restoring a regenerative pattern of COX7A1 gene expression may facilitate hair regeneration in mouse models.
In addition, we have invented multiple platforms for delivering iTR using small molecules as well as biologic strategies such as those
using gene therapy to transiently express reprogramming factors. We have filed patent applications on the use of iTR in a wide array
of degenerative conditions including cancer.

 4.
 ESI Cell Lines: AgeX has six clinical-grade human embryonic stem cell lines, they are distinguished as the first clinical-grade
human pluripotent stem cell lines created under current Good Manufacturing Practice as described in Cell Stem Cell (2007;1:490-4). They
are listed on the NIH Stem Cell Registry in the USA and are among the best characterized and documented stem cell lines in the world.
ESI-053 is among only a few pluripotent stem cell lines from which a derived cell therapy product candidate has been granted FDA IND
clearance for human studies. The FDA cleared an IND application from ImStem Biotechnology, one of our sublicensees, for a MSC product
derived from ESI-053 for multiple sclerosis. This was believed to be the first MSC product derived from a pluripotent stem line to be
accepted for a human trial by the FDA. The ESI cell lines are available as research or clinical grade product, and have been offered
since 2006.

 Pre-Merger
Business Strategy

 We
believe our four proprietary platform technologies, PureStem for cell derivation and manufacturing, UniverCyte
for generation of hypoimmunogenic cells and iTR TM for reversing the age of cells already in the body present AgeX with a multiplicity
of attractive opportunities which we may pursue. Given these platform technologies may be highly desirable to multiple academic and biopharma
companies due to their broad applicability and potentially important clinical and commercial benefits, AgeX plans to pursue different
business models for these platforms:

 Co-Development
 and Licensing: Our PureStem and UniverCyte technologies as well as our ESI cell lines may have applications
 in the development of a broad range of cell therapy products. We will seek opportunities to license these AgeX technologies to other
 cell therapy or biopharma companies to bring in early revenue streams, especially for therapies that AgeX does not presently intend
 to develop.

 Cellular
 Therapy: AgeX presently does not have the laboratory and research staff required to conduct in-house research and development
 for its product candidates, including AGEX-BAT1 and AGEX-VASC1. Instead, AgeX may conduct research and development of those product
 candidates through a variety of alternative strategies, including but not limited to, sponsoring research and development work at
 research laboratories at universities or other educational institutions, entering into co-development and marketing arrangements
 with researchers or other companies in the cell therapy or biopharma industry, and engaging contract service providers to conduct
 research and development and manufacturing for AgeX for particular product candidates. Our sponsored Huntington's Disease research
 program at UCI has led to the organization of an AgeX subsidiary, NeuroAirmid, of which we equally owned with certain UCI researchers,
 to pursue clinical studies of the use of derived neural stem cell to treat that disease. The new subsidiary is still in the organizational
 stage and commencement of clinical study work will depend on its ability to obtain financing through grants or third-party investment.

 Reverse
 Bioengineering, Inc. (Reverse Bio): Partial cellular reprogramming using our iTR TM technology may one day allow us
 to revert aged or diseased cells inside the body back to a more youthful, healthy and functional state. We incorporated Reverse Bio
 as an AgeX subsidiary to develop our iTR TM platform. Reverse Bio is intended to allow for a dedicated focus on iTR TM
 in terms of equity financing and advancing our iTR TM technology to proof-of-concept in an animal model. We have
 assigned to Reverse Bio our patent portfolio for iTR development, but the future operations of Reverse Bio will depend in large measure
 on its ability to raise its own capital.

 Each
of these models may provide particular benefits to AgeX in terms of financing and efficiency of operations. However, each alternative
has potential disadvantages as well. If AgeX out-licenses its technology it will avoid the costs and risks of research and development,
clinical trials, regulatory approval, manufacturing, and commercialization of product candidates, but the revenues AgeX would receive
from commercialization of products developed under those arrangements would likely be limited to royalties on product sales and potentially
licensing fees and milestone payments representing a relatively small portion of total product revenues. Similarly, co-development and
marketing or similar arrangements would permit AgeX to share costs and risks but would also require AgeX to share revenues from the product
candidates that may be successfully developed and commercialized. See elsewhere in this Report for information about certain risks associated
with reliance on arrangements with third parties for research, product development, clinical trials, manufacturing, and commercializing
product candidates.

 We
plan to finance our iTR TM and AGEX-BAT1 research and development through Reverse Bio. To the extent that such financing is
obtained through the sale of capital stock or other equity securities to investors or other biopharma companies by Reverse Bio, or the
sale of Reverse Bio shares held by AgeX, our equity interest in Reverse Bio and our iTR TM and AGEX-BAT1 business would be
diluted.

 However,
if the Merger is completed, the Combined Company will primarily focus on developing Serina's product candidates and it is
anticipated that the Combined Company will not continue to develop our product candidates, other than potentially the development
program of NeuroAirmid, which is described below under " Other AgeX Products and Product Candidates — Neural Stem
Cells."

 AgeX
Technology Platforms

 Technology

 Regulatory
approval of cell- and tissue-based products require high standards of quality control. In the case of stem cell-derived products, there
is a high standard for ensuring the known identity, purity, and reproducibility of the cells to be administered. PSCs provide certain
advantages over adult stem cell products when used in the manufacture of cell-based therapeutics for the treatment of age-related disease.
These advantages include:

 The
 replicative immortality of the PSCs which facilitates the indefinite scale-up of PSC master cell banks for the manufacture of uniform
 product, as well as an immortal substrate for targeted genetic modifications.

 Since
 most PSCs maintain long and stable telomere lengths, the replicative capacity of derived differentiated cell types is typically longer
 (younger) than adult or even fetal-derived cells.

 Using
 PureStem technology, it is possible to clonally expand hundreds of purified, identified, and reproducibly scalable cell types
 that retain regenerative potential (have not passed the regeneration limit).

 technology is based on the observation that embryonic anlagen of many tissues in the human body are naturally comprised of highly
proliferative cells with relatively long telomere length. Therefore, it is possible to generate clonal lineages of these cells in
vitro. Cells derived from adult tissues commonly permanently cease to divide after a certain number of doublings, a condition known
as senescence. In addition, adult and even fetal tissues largely contain differentiated cells often with limited or no capacity of replication
in vitro. As a result, the clonal expansion of human embryonic progenitor cell types allows not only a novel and more facile point of
scalability but also generates populations of cells that are multipotent instead of pluripotent, and therefore markedly easier to define
identity, purity, and potency.

 We
have studied the fate of over 200 diverse PureStem cell lines in thousands of differentiation conditions. This was accomplished by thawing
individual cryopreserved PureStem cell lines, culturing them in the laboratory, and then exposing the cells to factors that differentiate
cells such as protein growth and differentiation factors, hormones, and small molecules implicated in causing cells to change from one
type of cell into another (differentiation). Using individual cells from the over 200 diverse PureStem cell lines previously isolated
and cryopreserved, we treated the diverse cells with thousands of differentiation conditions, prepared RNA, and determined the gene expression
pattern of the cells using gene expression microarrays. These experiments have shown that the PureStem cell lines display site-specific
markers that identify not only the type of cells, but also where in the body the cells would normally reside. Therefore, in the example
of cartilage cells, it was possible to produce diverse types of cartilage in this manner. We have licensed from our former parent company
Lineage PureStem applications outside of orthopedics, medical aesthetics, and certain ophthalmological applications.

 We
have chosen two PureStem applications for our initial product development based on unmet medical need along with other factors. The first
product candidates are AGEX-BAT1, brown adipose tissue or BAT cells for the treatment of metabolic disorders such as obesity or Type
II diabetes, and AGEX-VASC1, vascular endothelial progenitors for the treatment of age-related ischemic disease such as that leading
to peripheral vascular disease and ischemic heart disease.

 UniverCyte

 Our
UniverCyte technology uses a proprietary, novel, modified form of HLA-G and is intended to permit donor cells to be transplanted
into patients without donor-patient tissue matching and without administering immunosuppressant medication. Immunosuppressive drugs can
reduce patient resistance to infectious diseases and cancers as well as cause organ and other toxicities. Reducing or eliminating the
need for immunosuppressants after cell transplantation by use of hypoimmunogenic cells may make therapies universally available. We plan
to use or license the use of this patented technology to produce genetically-modified master cell banks of pluripotent stem cells that
can then be differentiated into any young cell type of the human body that now express the immune tolerogenic molecule.

 AgeX
Products and Product Candidates

 AgeX
Therapeutic Product Candidates

 AGEX-BAT1
- Brown Adipose Tissue (BAT) Progenitors

 Brown
adipose tissue (BAT) is abundant early in life but lost precipitously with age. This tissue is believed to generate heat through expression
of a gene called UCP1. In addition, the high levels of glucose and lipid uptake by the tissue is believed to balance metabolism
in young people. In contrast, central obesity and Type II diabetes has been correlated with low levels of BAT.

 Figure
6. Human tissue-derived BAT cells (left) stained red for the presence of UCP1 show a minority of cells being true BAT cells. PureStem-derived
AGEX-BAT1 cells are uniformly UCP1 positive.

 The
demonstration in published literature in the public domain that the transplantation of BAT from young mice to obese diabetic mice resulted
in weight loss and increased insulin sensitivity has led to a search for a source of industrially-scalable clinical grade BAT cells as
well as an appropriate matrix for lipotransfer. There currently is no FDA-approved matrix for cell transplantation. As shown in Figure
6, the AGEX-BAT1 progenitors strongly express the BAT marker UCP1 when induced to differentiate and show a relatively high degree
of purity compared to human tissue-derived BAT.

 We
entered into a Sponsored Research Agreement with Ohio State University using AGEX-BAT1 in mice to determine whether transplantation of
AgeX-BAT1 cells may lead to improvements in diet-induced obesity, metabolic health including glucose metabolism, and cardiac function.
For purposes of this proof of concept work, two different cell transplant matrices were tested, HyStem and a 3-D
silk scaffold. We consider this work to be an early stage study and expect to conduct or sponsor additional research on the potential
therapeutic benefits of AGEX-BAT1.

 A
number of new GLP-1 receptor agonist drugs, including Mounjaro, Ozempic, Rybelsus, and Trulicity for treating type 2 diabetes, and Wegovy
and Zepbound for weight management, have entered the market. Ozempic is also being used off label for weight loss. The attention and
acceptance that these new drugs have attained in the medical field for the treatment of type 2 diabetes and chronic weight management
may substantially limit or eliminate the prospects for developing and commercializing any product based on AGEX-BAT1, brown adipose tissue,
for those uses. Although the GLP-1 receptor agonist drugs may in certain patients be contraindicated, carry unacceptable medical risks,
lead to intolerable side effects, or may not be satisfactorily effective, it is not clear whether those patients would constitute a large
enough market for an alternative therapy to warrant the time and expense of developing AGEX-BAT1 for the uses addressed by the products
currently on the market. Further, it is likely that the administration of a AGEX-BAT1 cell therapy product would entail a surgical implant
procedure which would be expensive and would pose risks to the patient related to the surgical procedure that are not faced by users
of the injectable or pill GLP-1 receptor agonist drugs currently on the market.

 AGEX-VASC1
- Vascular Progenitors

 technology can also yield highly purified embryonic vascular components. As shown below, select clonal lines express markers such
as VE-Cadherin (CDH5) and PECAM1, as well as VWF and other markers of venous, arterial, and lymphatic endothelium. Flow cytometry shows
purity indistinguishable from 100%.

 In
addition to vascular endothelial cells, we have characterized vascular smooth muscle cell progenitors. This makes it possible for us
to construct two of the key cellular components of arterial vessels, such as those compromised in coronary artery disease.

 Figure
7. PureStem-derived vascular endothelial cell lines are capable of regenerating young vasculature (bottom left) and appear to have essentially
100% purity by fluorescence activated cell sorting analysis.

 Leveraging
our assets in pluripotency and bioinformatics, we have performed research manipulating cellular immortality and regenerative biology
in human cells. In 2010, our scientists while at Lineage demonstrated the reversal of the developmental aging of human cells using transcriptional
reprogramming technology. In 2017, we published certain markers of the Weismann barrier, and the high prevalence of a reversion back
before the Weismann barrier in diverse cancer cell types cultured in vitro.

 We
extended this research to determine whether reprogramming can be modified to only reverse the aging of cells back before the Weismann
Barrier, not back to pluripotency. We have utilized for example the gene COX7A1 as a marker of cells that have lost regenerative
potential (crossed the Weismann Barrier). As shown in Figure 8, our proprietary formulation AGEX-iTR1547 has demonstrated initial capability
of reducing the expression of the marker gene COX7A1 back to before the Weismann Barrier without reverting the cells to pluripotency.
When implemented in vivo, this partial reprogramming, or iTR, would be expected to induce tissue regeneration, and when combined
with telomerase, may be able to modulate both cellular immortality and regenerative biology for therapeutic effect. In addition to the
small molecule product candidate designated iTR1547, we have invented biological interventions based, for example, on gene therapy. Our
inventions relating to iTR biologics disclose both DNA and RNA-based strategies. Our gene delivery iTR product candidate is designated
iTR1550. We are performing research to optimize AGEX-iTR1547 and in parallel a gene delivery formulation designated AGEX-iTR1550 in order
to initiate preclinical studies of one or both of the agents on the scarless regeneration of the skin.

 Figure
8. PSCs such as ES Cells and PureStem EP Cells display a regenerative capacity like cells that have not crossed the Weismann Barrier.
During pre- and post-natal development, skin cells become increasingly incapable of scarless regeneration as reflected in increasing
 COX7A1 expression. iPS cell reprograming reverts cells back to pluripotency, while AgeX-iTR1547 reverts cells back only to a point
prior to the Weismann Barrier (regenerative state).

 Status
and Development Plan

 The
product candidates we have chosen are in the discovery stage of development. Prior to filing an investigational new drug application
(IND) for the initiation of clinical trials of our initial product candidates, AGEX-BAT1, AGEX-VASC1, and AGEX-ITR1547/AGEX-iTR1550,
a number of important research and development goals will need to be achieved, including discovery-level research for the qualification
of reagents used in the manufacture of the product, completion of the standard operating procedures (SOPs) to be used, completion of
the methods and documentation for characterization of the product; and producing and testing the genetic modifications in the master
cell banks of the pluripotent stem cells under cGMP in order to produce product that will not illicit immune rejection following transplantation.
In addition, we will be required to expand the numbers of the pluripotent stem cell master cell banks for future use; produce working
cell banks from which the product will be manufactured for clinical trials; produce the relevant product under cGMP conditions; and expand
the number of relevant cells and cryopreserve them under cGMP conditions. In addition, we will be required to design the pre-clinical
studies including the study endpoints, perform biosafety testing and release the first clinical batch based on preliminary characterization
results, and complete full product characterization. Biosafety testing will necessarily include pilot testing in animals such as (NOD/SCID)
mice, dosing spiking studies at early and later endpoints, tumorgenicity and biodistribution studies to determine whether the cells form
undesired tumors or migrate to inappropriate sites respectively in the animal. Lastly, we will need to define the clinical trial and
regulatory strategy and hold various meetings with the U.S. Food and Drug Administration (FDA), as well as successfully submit an IND
to the FDA and receive clearance to begin trials. Thereafter, we will need to demonstrate safety and efficacy of the product in human
clinical trials in Phase I and II trials, and continued safety and efficacy for achieving the desired endpoint in Phase III trials, potentially
then leading to product registration. See " Risk Factors—Risks Related to Our Business Operations " for discussion
of risks relating to product development and clinical trials. These include, but are not limited to, failure to successfully complete
the aforementioned studies due to the failure of the product, processes, or skills of our employees, unforeseen delays in the development
process, failure to raise requisite financing, or failure to receive permission from the FDA to advance product development. To the extent
we license development of one or more product candidates to third parties or enter into collaboration arrangements for product development,
our licensees or collaborators would need to undertake and achieve the foregoing goals.

our product candidates are still in the discovery stage, our choice of product candidates and development plans are subject to change
based on a variety of factors. We may determine to abandon the development of one or more of our product candidates, or we may prioritize
the development of one or more product candidates, or we may select or acquire and prioritize the development of new product candidates.
Our choice and prioritization of product candidates for development will be influenced by a variety of factors, including but not limited
to:

 Results
 of our laboratory research and any animal and clinical trials that we or any licensees or collaborators may conduct;

 Our
 ability to enter into licensing or collaborative arrangements with other biotechnology or biopharma companies or universities with
 their own laboratory facilities and research staffs to conduct research and development of one or more product candidates;

 Our
 analysis of third-party competitive and alternative technology that may lead us to conclude that our product candidates or technologies
 may be non-competitive or obsolete;

 Our
 analysis of market demand and market prices for the products we plan to develop could lead us to conclude that market conditions
 are not favorable for receiving an adequate return on our investment in product development and commercialization;

 The
 amount of capital that we will have for our development programs and our projected costs for those programs;

 The
 issuance of patents to third parties that might block our use of the same or similar technology to develop a product candidate; and

 The
 views of the FDA and comparable foreign regulatory agencies on the pre-clinical product characterization studies required to file
 an IND in order to initiate human clinical testing of a therapeutic product candidate or to attain marketing approval for that product
 candidate, or to obtain an investigational device exemption for clinical trials, or clearance for a 510(k) application to market
 a medical device.

 Other
AgeX Products and Product Candidates

 Neural
Stem Cells

 AgeX
has sponsored a research and development program at UCI for the manufacture of neural stem cells for use in the treatment of Huntington's
Disease and potentially other neurological diseases and disorders. AgeX has also collaborated with a research group at UCI studying the
potential use of exosomes and other extracellular vesicles for the treatment of adverse neurocognitive effects of cancer chemotherapy
and radiation therapy on brain function. The neural stem cell sponsored research and development program led to the creation of NeuroAirmid,
which is a subsidiary of AgeX co-owned with certain of the UCI researchers and in which UCI will also receive an equity interest as partial
consideration for granting to NeuroAirmid a license to use a UCI patent and certain specified technical information, materials, or data
("Associated Technology") created in the laboratory of the inventors of the licensed patent.

 UCI
has made an IND submission to the FDA for the use of neural stem cells in a clinical trial for the treatment of Huntington's Disease.
The FDA has removed a clinical hold on the IND permitting a clinical trial to proceed. UCI and NeuroAirmid will apply to the California
Institute for Regenerative Medicine (CIRM) for a $12,000,000 CLIN2 grant to fund the proposed clinical trial.

 There
can be no assurance that: (i) NeuroAirmid and UCI will successfully conclude negotiations and enter into a license agreement providing
NeuroAirmid with a license to use a UCI patent needed for NeuroAirmid's development and production of its planned therapeutic neural
stem cell product, (ii) CIRM will provide a grant to finance a clinical trial or that the amount of any grant that may be awarded will
ultimately be sufficient to complete the initial phase of the clinical trial; (iii) NeuroAirmid will be able to raise capital needed
to finance its operations that will not be funded by a CIRM clinical trial grant or to finance any further clinical trials after any
initial CIMR grant funding is exhausted; and (iv) if a clinical trial is commenced, it will lead to the successful clinical development
and subsequent FDA marketing approval of a therapeutic cellular product for the treatment of Huntington's Disease or any other
neurological disease or disorder.

 ESI
BIO Research Products

 We,
through our ESI BIO research product division, market a number of products related to pluripotent stem cells including research-grade
as well as cGMP-grade human PSC lines. We plan to contract with third parties where the third parties to allow them to utilize cGMP PSC
lines in defined fields of application in exchange for certain compensation including the payment of royalties to us if they are successful
in developing and commercializing a product.

 Subsidiaries

 AgeX
has five subsidiaries, Reverse Bio, ReCyte Therapeutics, Inc. ("ReCyte"), NeuroAirmid, UniverXome Bioengineering, Inc. ("UniverXome"),
and Merger Sub. Reverse Bio, ReCyte and NeuroAirmid are early stage pre-clinical research and development companies. UniverXome was organized
to hold AgeX assets related to our current core technologies and research and development programs other than NeuroAirmid if the Meger
is consummated.

 AgeX
intends to develop its iTR TM platform and AGEX-BAT1 through Reverse Bio. Reverse Bio will allow for a dedicated focus on iTR TM
 in terms of equity financing and advancing the iTR TM technology to proof-of-concept in an animal model. AgeX's
patent portfolio for iTR and AGEX-BAT1 development have been assigned to Reverse Bio, but the future operations of Reverse Bio will depend
in large measure on its ability to raise its own capital. ReCyte is involved in stem cell-derived endothelial and cardiovascular related
progenitor cells for the treatment of vascular disorders and ischemic conditions. AgeX owns 100%, 94.8%, and 50% of the outstanding capital
stock of Reverse Bio, ReCyte, and NeuroAirmid, respectively. We expect that our ownership interests in Reverse Bio and NeuroAirmid will
be diluted if those subsidiaries are successful in obtaining financing from investors or product development collaborators. All material
intercompany accounts and transactions have been eliminated in consolidation.

 Manufacturing

 We
presently do not have any manufacturing facilities and we will need to rely on third party contract manufacturers for the production
of our cell lines and product candidates and to comply with quality manufacturing processes and controls.

 Facilities

 Our
principal place of business is located at 1101 Marina Village Parkway, Suite 201, Alameda, California, which we use for office purposes
only. We do not have our own research laboratory facilities.

 Commercialization
Plan

 With
the exception of our research product sales which generate a trivial amount of revenues, we currently have no commercialized or marketed
products such as FDA-approved drugs in our portfolio. As a result, we have not yet assembled an infrastructure for sales and marketing.
At the point in time, if ever, that our product candidates approach clearance or approval, we plan to develop a commercial plan that
may initially include strategic marketing partnerships.

 Intellectual
Property

 Patents
and Trade Secrets

 We
rely primarily on patents and contractual obligations with employees and third parties to protect our proprietary rights. We have sought,
and intend to continue to seek, appropriate patent protection for important and strategic components of our proprietary technologies
by filing patent applications in the U.S. and certain foreign countries. There are no assurances that any of our intellectual property
rights will guarantee protection or market exclusivity for our products and product candidates. We also use license agreements both to
access technologies developed by other companies and universities and to convey certain intellectual property rights to others. Our financial
success will be dependent, in part, on our ability to obtain commercially valuable patent claims, to protect and enforce our intellectual
property rights, and to operate without infringing upon the proprietary rights of others if we are unable to obtain enabling licenses.

 The
patents for our core programs are summarized below.

 AGEX-BAT1

 Brown
Adipose Tissue (BAT) Progenitor Cells: The pending patent applications related to BAT progenitor cells, which are owned by AgeX,
include U.S. and international patent applications. The applications are directed to the differentiation of pluripotent stem cells (including
hES cells) into progenitor cell types capable of making the cellular components of brown fat. The patents also describe culture and purification
methods. The approximate expiration dates of the BAT patents, if issued, will range from 2034 to 2036.

 AGEX-VASC1

 Vascular
Progenitors: The pending patent application pertaining to purified vascular progenitor cells and embryonic vascular components are
owned by AgeX or an AgeX subsidiary or licensed from Lineage. The patents include U.S. patent applications and are directed to methods
to enhance vascular tube networks, compositions of pericyte progenitor cells, compositions of exosomes containing angiogenic molecules,
compositions of vascular and lymphatic cells, and methods to culture and purify the cells or components thereof. The approximate expiration
dates of the vascular progenitor patents, if issued, range from 2032 to 2038. We plan to file an international patent application claiming
priority from a pending US provisional application by the filing deadline, which could lead to a patent that if issued would expire in
2039.

 AGEX-iTR1547
and AGEX-iTR1550

 Induced
Tissue Regeneration (iTR TM): The pending patent applications related to the iTR programs, which are owned by AgeX, include
applications pending, for example, in the United States, Australia, Canada, China, Europe, Japan and a pending international patent application.
These patents and patent applications are directed to compositions and methods for healing damaged tissue using the iTR treatment methods.
The patent applications are also directed to treatment methods by regenerating aging tissue by modulating genes involved in tissue regeneration,
including reprogramming cells and tissues back to a regenerative state. The approximate expiration dates of the iTR patents, if issued,
will range from 2034 to 2041.

 Other
AGEX Licensed and Sublicensed Patents

 Progenitor Cells: The patents and pending applications related to our PureStem technology include patents and
applications in the United States, Canada, Europe and Australia. These patents are directed to methods for generating diverse isolated
progenitor cell lines which generally do not express COX7A1 and combinations of other methods for employing pluripotent stem cell
lines suitable for clinical use. The pending applications are directed to clonally purified human embryonic progenitor cell lines and
methods for reproducible, large scale production of clonally purified human embryonic progenitor cells, compositions and methods for
generating diverse cell types, and assays useful in identifying hES cell lines and pluripotent cells resulting from the transcriptional
reprogramming of somatic cells that have embryonic telomere length. The approximate expiration date of the PureStem issued
patents is 2031 and the approximate date of expiration of the pending patents, if issued, will range from 2029 to 2032.

 The
PureStem patent portfolio includes patents and pending applications licensed from Advanced Cell Technology, Inc., which
later became Ocata Therapeutics, Inc. (Ocata). The Ocata issued patents cover methods for reprogramming animal differentiated somatic
cells to undifferentiated cells and methods for producing differentiated progenitor cells using morula-derived or inner cell mass cells
from a blastocyst and expire from approximately 2023 to 2026. The Ocata pending applications relate to methods for the derivation of
cells that have a reduced differentiation potential using PSCs, methods for reprogramming animal differentiated somatic cells to undifferentiated
cells and methods for producing differentiated progenitor cells using morula-derived or inner cell mass cells from a blastocyst. The
Ocata pending patents, if issued, will expire between 2023 and 2026.

 ESI
Human Embryonic Stem Cell (hES) Cell Lines: AgeX licenses rights to the ES Cell International Pte. Ltd. patent portfolio with patents
issued in the United States, Australia, Israel, UK, Singapore, Japan, and applications pending in the US and Europe. The patents are
directed to methods for the differentiation of or enhancing the differentiation of stem cells into cardiomyocytes, neural cells, and
pancreatic endoderm cells, compositions of pancreatic progenitor cells, methods of promoting the attachment, survival and/or proliferation
of substantially undifferentiated stem cells in culture, methods for identifying and selecting cardiomyocytes, methods of freezing stem
cells or progenitor cells, methods for identifying cardiogenic factors, compositions and methods for modulating spontaneous differentiation
of a stem cell, methods of modulating the differentiation of undifferentiated, pluripotent human embryonic stem cells in culture, isolated
endodermal progenitor cells, methods for transducing human embryonic stem cells, cell culture systems. The pending applications are directed
to methods for the differentiation of hES cells into the three cell lineages, including for example cardiomyocytes, skeletal muscle cells,
vascular endothelial cells, and pancreatic endoderm cells, as well as various culture and purification methods and compositions and methods
of treatment. The ESI issued patents will expire from 2023 to 2027, and the approximate date of expiration of the pending patents, if
issued, will range from 2023 to 2027.

 UniverCyte TM
 Human Leukocyte Antigen-G (HLA-G) Technology: In August 2018, we acquired from Escape Therapeutics patents and patent applications
related to HLA-G-modified cells and methods of generating allogeneic cells with reduced risk of being rejected by patients regardless
of the HLA class I haplotype. The patents and pending application related to our HLA-G modified cells technology include patents issued
in the United States, Australia and Japan and applications are pending in the United States, Australia, Canada, China, Europe, Japan,
Korea, and Singapore. The patents are directed to cells which are genetically modified to express a HLA-G and have reduced immunogenicity,
and nucleic acid compositions useful for generating the genetically modified cells. The pending applications are directed to compositions
and methods for generating cells which are genetically modified to express HLA-G having reduced immunogenicity, nucleic acid compositions
useful for generating the genetically modified cells, and methods of producing artificial tissues using the genetically modified cells.
The approximate expiration date of the UniverCyte HLA-G issued patents is 2033 and the approximate date of expiration of the pending
patents, if issued, will also be 2033. We intend to use the UniverCyte technology in the development of our two lead product candidates,
AGEX-BAT1 and AGEX-VASC1 for the treatment of Type II diabetes and peripheral vascular disease and ischemic heart disease, respectively.
In addition, we may seek to license out or form collaborations for the use of our UniverCyte technology.

Risks Related to Obtaining and Enforcing Patent Protection

 There
is a risk that any patent applications that we file and any patents that we hold or later obtain could be challenged by third parties
and be declared invalid or infringing on third-party claims. Litigation, interferences, oppositions, inter partes reviews or other proceedings
are, have been and may in the future be necessary in some instances to determine the validity and scope of certain of our proprietary
rights, and in other instances to determine the validity, scope or non-infringement of certain patent rights claimed by third parties
to be pertinent to the manufacture, use or sale of our products. We may also face challenges to our patent and regulatory protections
covering our products by third parties, including manufacturers of generics and biosimilars that may choose to launch or attempt to launch
their products before the expiration of our patent or regulatory exclusivity. Litigation, interference, oppositions, inter partes reviews,
administrative challenges or other similar types of proceedings are unpredictable and may be protracted, expensive and distracting to
management. The outcome of such proceedings could adversely affect the validity and scope of our patent or other proprietary rights,
hinder our ability to manufacture and market our products, require us to seek a license for the infringed product or technology or result
in the assessment of significant monetary damages against us that may exceed any amounts that we may accrue on our consolidated financial
statements as a reserve for contingent liabilities. An adverse determination in a judicial or administrative proceeding or a failure
to obtain necessary licenses could prevent us from manufacturing or selling our products. Furthermore, payments under any licenses that
we are able to obtain would reduce our profits derived from the covered products and services.

 The
enforcement of patent rights often requires litigation against third-party infringers, and such litigation can be costly to pursue. Even
if we succeed in having new patents issued or in defending any challenge to issued patents, there is no assurance that our patents will
be comprehensive enough to provide us with meaningful patent protection against our competitors.

 In
addition to relying on patents, we rely on trade secrets, know-how, and continuing technological advancement to maintain our competitive
position. We have entered into intellectual property, invention, and non-disclosure agreements with our employees, and it is our practice
to enter into confidentiality agreements with our consultants. There can be no assurance, however, that these measures will prevent the
unauthorized disclosure or use of our trade secrets and know-how, or that others may not independently develop similar trade secrets
and know-how or obtain access to our trade secrets, know-how, or proprietary technology.

 Our
Licensing Arrangements

 License
Agreement with Lineage: iTR TM, PureStem and Telomere Length

 Concurrently
with the contribution of assets to us by Lineage under an Asset Contribution and Separation Agreement, we entered into a License Agreement
with Lineage pursuant to which Lineage has licensed to us, with rights to sublicense, certain intellectual property, including patents
and patent applications and know-how for use in the development, manufacture and commercialization of products or services for the prevention,
treatment, amelioration, diagnosis or monitoring of all human and non-human animal diseases and conditions except for the field of medical
products, devices and services for the reserved Lineage Exclusive Field of orthopedic, ophthalmic, and medical aesthetic uses. In addition,
Lineage retains an option right, on terms to be negotiated, to license iTR patents in research, development, manufacturing and commercialization
of treatments based on iTR in the Lineage Exclusive Field. The licensed patents and know-how relate generally to (a) Lineage's
PureStem human embryonic progenitor cell lines, and (b) telomere length and DNA quality control analysis in pluripotent
stem cells.

 The
Lineage patent rights licensed to us are exclusive and worldwide except for existing third-party licenses, and for medical products,
devices, and services related to tendon. We additionally received an option to license certain Lineage retained rights outside of orthopedic
indications unless a license grant would compete with a Lineage program or products in the Lineage Exclusive Field.

 The
License Agreement contains customary provisions pertaining to patent maintenance, enforcement, and defense and related cost allocations,
insurance, indemnification, and termination of the license in the event of a breach or default by a party, or the bankruptcy or other
insolvency event with respect to a party.

 Additional
License and Sublicense Agreements

 Lineage
and certain Lineage subsidiaries also entered into agreements pursuant to which they have licensed or sublicense to us, on a non-exclusive,
world-wide, royalty bearing basis, certain additional patents and patent rights and know-how relating to human embryonic progenitor cell
technology and human pluripotent stem cell lines and technology for use outside the Lineage Exclusive Fields, or in the case of certain
sublicense rights, fields previously licensed to third parties.

 Sublicense
of Certain Progenitor Patents

 Lineage
has granted to us a sublicense of certain patents licensed to Lineage that pertain to the derivation of human embryonic progenitor cell
lines. The sublicense will permit us to use the sublicensed patents for the treatment, palliation, diagnosis, or prevention of any disease,
disorder or health condition outside of the Lineage Exclusive Field. The sublicense expires the later of July 10, 2028 or the latest
expiration date of a sublicensed patent, unless terminated earlier pursuant to the terms of the sublicense.

 We
will pay Lineage a royalty on "net sales," as defined in the sublicense agreement, until the royalty payments to Lineage's
licensor by Lineage total $1.2 million and thereafter will pay to Lineage a low single digit royalty on its own net sales and a low double
digit royalty on sublicensing consideration.

 If
we grant a sublicense to use the patents, we will pay Lineage a portion of any consideration received for a sublicense, including but
not limited to, upfront payments and milestones, and non-cash exchanges or considerations, but not payments for developing a product,
service or process. If we become obligated to pay royalties to one or more affiliates of Lineage for the use of patent rights related
to this sublicense and as a result, the royalties payable to Lineage with respect to royalties under the sublicense plus the royalties
payable to the affiliates would exceed a designated amount of net sales, the royalties due to Lineage may be reduced but not less than
the designated amount. In addition, we will pay to Lineage a royalty on "net sales," as defined in the sublicense agreement,
by the sublicensee. If we become obligated to pay royalties to one or more affiliates of Lineage for the use of patent rights related
to this sublicense and as a result, the royalties payable to Lineage with respect to sales by a sublicensee plus the royalties payable
to the affiliates would exceed a designated amount of net sales, the royalty due on net sales by the sublicensee may be reduced but not
less than the designated amount.

 The
sublicense agreement includes reciprocal cross-licenses between Lineage and us with respect to any new patents that may be issued based
on the use of the sublicensed patents. Any such license to Lineage will be exclusive in the Lineage Exclusive Field and nonexclusive
in all other licensed fields. Any such license from Lineage to us will be for use outside the Lineage Exclusive Field and for medical
products or services involving tendon. Each license will be for a term of 10 years.

 ESI
License

 Lineage's
subsidiary ES Cell International Pte (ESI) has granted to us non-exclusive rights to certain ESI patents and human pluripotent stem cell
lines, or ESI Cell Lines, for use outside of the ESI Exclusive Field of orthopedic, ophthalmic, medical aesthetic, and spinal cord injury
uses, and outside certain other fields for which ESI has previously granted licenses. We will pay ESI a 2% royalty on "net sales,"
as defined in the license agreement. If we become obligated to pay royalties to one or more third party or to Lineage for the use of
patent rights related to this license and as a result the royalties payable to ESI with respect to this license agreement plus the royalties
payable to such third party or Lineage would exceed a designated amount of net sales, the royalty due on net sales by the sublicensee
may be reduced. The patent license expires upon the latest expiration date of a licensed patent, unless terminated earlier pursuant to
the terms of the license. All other rights under the license are terminable by either party under the conditions specified in the license.

 If
we grant rights to any third party to use ESI Cell Lines derived under cGMP, we will pay ESI a share of all consideration that we receive
as consideration for the grant of those rights, including all cash and non-cash consideration but not royalties. We are not permitted
to grant sublicenses to the licensed ESI patents but may sublicense the use of ESI Cell Lines.

 AgeX
also will pay ESI 5% of any fees that AgeX may receive for providing third parties with a "drug master file" for submission
to the FDA or similar regulatory agencies in other jurisdictions that may be used to provide confidential detailed information about
facilities, processes or articles used in the manufacturing, processing, packaging and storing of one or more human drugs, including
but not limited to biologics, cell lines and cell products.

 Competition

 The
biotechnology industry is highly competitive and characterized by rapid change (even disruptive advances) that challenge the ability
of any one company to maintain leadership. Therefore, we face competition on multiple fronts, including from other biotechnology companies,
large pharmaceutical companies, academic institutions and government research entities. We believe the competitive advantages of our
technology platform and resulting product candidates arise from the large market opportunities addressed by our product candidates, their
anticipated safety profile, the expected cost of manufacture of off-the-shelf products, our intellectual property, as well the fundamental
and widespread role of cell aging and regeneration in human age-related degenerative disease.

 There
are numerous biotechnology companies developing therapeutics for human aging, with each company often focusing on a specific molecular
pathway within cells. For example, ResTORbio, Inc. is developing modulators of the mechanistic target of rapamycin (mTOR) pathway to
treat immunological and cardiovascular disorders. Calico Life Sciences LLC is a Google-founded research and development company aimed
at identifying molecular pathways that control animal lifespan and translating these insights into novel therapeutics designed to increase
human healthspan. Calico has not disclosed its lead product development plans. Unity Biotechnology, Inc. focuses on cellular senescence,
in particular, the use of agents that can target senescent cells for selective ablation (senolysis). Unity's stated targeted age-related
diseases include osteoarthritis as well as other ophthalmological and pulmonary diseases. In addition, Altos Labs, Inc. (Altos) has reportedly
received funding commitments in excess of $3 billion for research and development of products relating to age-reprogramming. The initial
technology focus disclosed by Altos may compete with the iTR program within AgeX and its subsidiary Reverse Bio.

 Our
therapeutic product candidates in development are likely to face competition from a large number of companies and technological strategies
including therapeutics intended to address our lead indications, including:

 Type
 II diabetes: current standard of care treatments (though not necessarily focused on the root cause of the disease) include dieting
 and exercise programs to reduce weight, or pharmacological interventions with a wide array of medications, including: Metformin (Glucophage,
 Glumetza, or others); (DiaBeta, Glynase), glipizide (Glucotrol) and glimepiride (Amaryl); Meglitinides (repaglinide (Prandin) and
 nateglinide (Starlix)); Thiazolidinediones (rosiglitazone (Avandia) and pioglitazone (Actos)); DPP-4 (sitagliptin (Januvia), saxagliptin
 (Onglyza) and linagliptin (Tradjenta)); GLP-1 receptor agonists (exenatide (Byetta), liraglutide (Victoza), semaglutide (Ozempic
 and Rybelsus), dulaglutide (Trulicity), and tirzepatide (Mounjaro); SGLT2 inhibitors (canagliflozin (Invokana) and dapagliflozin
 (Farxiga)); and insulin therapy (Insulin glulisine (Apidra), Insulin lispro (Humalog), Insulin asgpart (Novolog), Insulin glargine
 (Lantus), Insulin detemir (Levemir), Insulin isophane (Humulin N, Novolin N)).

 Vascular
 ischemia, including myocardial ischemia: current standard of care treatments including dieting, lowered intake of cholesterol, daily
 aspirin as a blood thinner; pharmacological agents including but not limited to nitrates as vasodilators (nitroglycerin sublingual
 tablet (Nitrostat), nitroglycerin transdermal ointment (Nitro-Bid), and isosorbide mononitrate and dinitrate (Isordil, Isordil Titradose,
 Dilatrate-SR)); beta blockers (atenolol (Tenormin), metoprolol (Lopressor, Toprol XL), and nadolol (Corgard)); calcium channel blockers
 (amlodipine (Norvasc), amlodipine and atorvastatin (Caduet), amlodipine and benazepril (Lotrel), diltiazem (Cardizem), felodipine
 (Cardene, Cardene SR), and verapamil (Calan); cholesterol-lowering medications such as statins atorvastatin (Lipitor), rosuvastatin
 (Crestor), and simvastatin (Zocor); Angiotensin-converting enzyme (ACE) inhibitors (Ranolazine (Ranexa), benazepril (Lotensin), and
 lisinopril (Prinivil, Zestril, Qbrelis); and surgical procedures to increase circulation including but not limited to angioplasty
 and stenting, coronary artery bypass surgery, and enhanced external counterpulsation.

 Many
of our competitors have greater financial, collaborative, technical, regulatory, and human resources as well as products more advanced
in development than our product pipeline, including products already marketed for our target indications. As a result, these competitors
may have great success in obtaining regulatory approvals, reimbursement, or market acceptance. Our competitors, may have greater success
in attracting qualified personnel, recruiting clinical trial sites, or in establishing strategic partnerships with larger pharmaceutical
companies to fund large late-stage clinical trials or product marketing. In addition, our future business could be limited should our
competitors commercialize products demonstrated to be more effective, safer, or less expensive than our comparable products.

 Government
Regulation and Product Approval

 Government
authorities at the federal, state, and local level, and in other countries, extensively regulate among other things, the development,
testing, manufacture, quality, approval, safety, efficacy, distribution, labeling, packaging, storage, record keeping, marketing, import/export,
and promotion of drugs, biologics, and medical devices. Authorities also heavily regulate many of these activities for human cells, tissues,
and cellular and tissue-based products (HCT/Ps).

 FDA
and Foreign Regulation of Therapeutic Products

 The
FDA and foreign regulatory authorities will regulate our proposed products as drugs, biologicals, or medical devices, depending upon
such factors as: the use to which the product will be put, the chemical composition of the product, and the interaction of the product
with the human body. In the United States, the FDA regulates drugs and biologicals under the Federal Food, Drug and Cosmetic Act (FDCA),
the Public Health Service Act (PHSA), and implementing regulations. In addition, establishments that manufacture human cells, tissues,
and cellular and tissue-based products are subject to additional registration and listing requirements, including current good tissue
practice regulations. To the extent AgeX develops cellular and tissue-based products or therapies, its products will be subject to review
by the FDA staff in its Center for Biologics Evaluation and Research (CBER) Office of Cellular, Tissue, and Gene Therapies. In some instances,
AgeX's clinical study protocol for a cell therapy product must be reviewed by the National Institute of Health through its Recombinant
DNA Advisory Committee.

 Any
human drug and biological products that we may develop for testing, marketing, or use in the United States will be subject to rigorous
FDA review and approval procedures. After testing in animals to evaluate the potential efficacy and safety of the product candidate,
an IND submission must be made to the FDA to obtain authorization for human testing. Extensive clinical testing, which is generally done
in three phases, must then be undertaken at a hospital or medical center to demonstrate optimal use, safety, and efficacy of each product
in humans. Each clinical study is conducted under the auspices of an independent institutional review board (IRB). The IRB will consider,
among other things, ethical factors, the safety of human subjects, and the possible liability of the institution.

 Clinical
trials are generally conducted in three "phases." Phase I clinical trials are conducted in a small number of healthy volunteers
or volunteers with the target disease or condition to assess safety. Phase II clinical trials are conducted with groups of patients afflicted
with the target disease or condition in order to determine preliminary efficacy, optimal dosages and expanded evidence of safety. In
some cases, an initial trial is conducted in diseased patients to assess both preliminary efficacy and preliminary safety, in which case
it is referred to as a Phase I/II trial. Phase III trials are large-scale, multi-center, comparative trials and are conducted with patients
afflicted with the target disease or condition in order to provide enough data to demonstrate the efficacy and safety required by the
FDA. The FDA closely monitors the progress of each of the three phases of clinical testing and may, at its discretion, re-evaluate, alter,
suspend, or terminate the clinical trial based upon the data which have been accumulated to that point and its assessment of the risk/benefit
ratio to the intended patient population. All adverse events must be reported to the FDA. Monitoring of all aspects of the study to minimize
risks is a continuing process. The time and expense required to perform this clinical testing can far exceed the time and expense of
the research and development initially required to create the product.

 No
action can be taken to market any therapeutic product in the U.S. until an appropriate New Drug Application (NDA) or BLA has been approved
by the FDA. Submission of the application is no guarantee that the FDA will find it complete and accept it for filing. If an application
is accepted for filing, following the FDA's review, the FDA may grant marketing approval, request additional information, or deny
the application if it determines that the application does not provide an adequate basis for approval. FDA regulations also restrict
the export of therapeutic products for clinical use prior to FDA approval. To date, the FDA has not granted marketing approval to any
pluripotent stem-based therapeutic products and it is possible that the FDA or foreign regulatory agencies may subject our product candidates
to additional or more stringent review than drugs or biologicals derived from other technologies.

 The
FDA offers several programs to expedite development of products that treat serious or life-threatening illnesses and that provide meaningful
therapeutic benefits to patients over existing treatments. A product may be eligible for breakthrough therapy designation if it treats
a serious or life-threatening disease or condition and preliminary clinical evidence indicates it may demonstrate substantial improvement
over existing therapies on one or more clinically significant endpoints. In 2017, FDA established a new regenerative medicine advanced
therapy (RMAT) designation as part of its implementation of the 21st Century Cures Act. An RMAT is defined as a cell therapy, therapeutic
tissue engineering product, human cell and tissue product, or any combination product using such therapies or products, with limited
exceptions that is intended to treat, modify, reverse, or cure a serious or life-threatening disease or condition; and preliminary clinical
evidence indicates that it has the potential to address unmet medical needs for such a disease or condition. RMAT designation provides
potential benefits that include more frequent meetings with FDA to discuss the development plan for the product candidate and eligibility
for rolling review and priority review. Products granted RMAT designation may also be eligible for accelerated approval on the basis
of a surrogate or intermediate endpoint reasonably likely to predict long-term clinical benefit, or reliance upon data obtained from
a meaningful number of sites, including through expansion to additional sites. Once approved, when appropriate, the FDA can permit fulfillment
of post-approval requirements under accelerated approval through the submission of clinical evidence, clinical studies, patient registries,
or other sources of real world evidence such as electronic health records; through the collection of larger confirmatory datasets; or
through post-approval monitoring of all patients treated with the therapy prior to approval.

 Some
of our future products may be eligible for RMAT designation. There is no assurance that the FDA will grant breakthrough therapy, accelerated
approval or RMAT status to any of our product candidates.

 In
addition to regulations in the United States, we are subject to a variety of foreign regulations governing clinical trials and commercial
sales and distribution of our products. Whether or not we obtain FDA approval for a drug candidate, we must obtain approval by the comparable
regulatory authorities of foreign countries or economic areas, such as the European Union, before we can commence clinical trials or
market products in those countries or areas. The approval process and requirements governing the conduct of clinical trials, product
licensing, pricing and reimbursement vary greatly from place to place, and the time may be longer or shorter than that required for FDA
approval.

 Combination
Products

 If
we develop any products that are used with medical devices, they may be considered combination products, which are defined by the FDA
to include products comprised of two or more regulated components or parts such as a biologic and a device. When regulated independently,
biologics and devices each have their own regulatory requirements. However, regulatory requirements for a combination product comprised
of a biologic administered with a delivery device can be more complex, because in addition to the individual regulatory requirements
for each component, additional combination product regulatory requirements may apply.

 510(k)
Medical Devices & Notification

 Product
marketing in the U.S. for most Class II and limited Class I devices typically follows a 510(k) pathway. To obtain 510(k) clearance, a
manufacturer must submit a premarket notification demonstrating that the proposed device is substantially equivalent to a legally marketed
device, referred to as the predicate device. A predicate device may be a previously 510(k) cleared device or a device that was in commercial
distribution before May 28, 1976 for which the FDA has not yet called for submission of PMA applications, or a product classification
created by FDA when it granted de novo authorization. The manufacturer must show that the proposed device has the same intended use as
the predicate device, and it either has the same technological characteristics, or it is shown to be equally safe and effective and does
not raise different questions of safety and effectiveness as compared to the predicate device.

 There
are three types of 510(k)s: traditional; special, for devices that are modified and the modification needs a new 510(k) but the modification
does not affect the intended use or alter the fundamental scientific technology of the device; and abbreviated, for devices that conform
to a recognized standard. The special and abbreviated 510(k)s are intended to streamline review. The FDA intends to process special 510(k)s
within 30 days of receipt and abbreviated 510(k)s within 90 days of receipt. Though statutorily required to clear a traditional 510(k)
within 90 days of receipt, the clearance pathway for traditional 510(k)s can take substantially longer.

 After
a device receives 510(k) clearance, any modification that could significantly affect its safety or effectiveness, or that would constitute
a major change in its intended use, requires a new 510(k) clearance or could require a PMA approval. The FDA requires each manufacturer
to make this determination in the first instance, but the FDA can review any such decision. If the FDA disagrees with a manufacturer's
decision not to seek a new 510(k) clearance, the agency may retroactively require the manufacturer to seek 510(k) clearance or PMA approval.
The FDA also can require the manufacturer to cease marketing and/or recall the modified device until 510(k) clearance or PMA approval
is obtained.

 Post-Approval
Matters

 Even
after initial FDA approval has been obtained, further studies may be required to provide additional data on safety or to gain approval
for the use of a product as a treatment for clinical indications other than those initially targeted. Data resulting from these clinical
trials may result in expansions or restrictions to the labeled indications for which a product has already been approved.

 FDA
Regulation of Manufacturing

 The
FDA regulates the manufacturing process of pharmaceutical products, human tissue and cell products, and medical devices, requiring that
they be produced in compliance with cGMP. The FDA regulates and inspects equipment, facilities, laboratories, and processes used in the
manufacturing and testing of products prior to providing approval to market products. If after receiving approval from the FDA, a material
change is made to manufacturing equipment or to the location or manufacturing process, additional regulatory review may be required.
The FDA also conducts regular, periodic visits to re-inspect the equipment, facilities, laboratories and processes of manufacturers following
an initial approval. If, as a result of those inspections, the FDA determines that that equipment, facilities, laboratories or processes
do not comply with applicable FDA regulations and conditions of product approval, the FDA may seek civil, criminal or administrative
sanctions and/or remedies against the manufacturer, including suspension of manufacturing operations. Issues pertaining to manufacturing
equipment, facilities or processes may also delay the approval of new products undergoing FDA review.

 Federal
Funding of Research

 The
NIH has adopted guidelines on the use of hES cells in federally funded research, consistent with President Obama's Executive Order
which rescinded President Bush's Executive Orders that permitted federal funding of research on hES cells using only the limited
number of hES cell lines. The central focus of the guidelines is to assure that hES cells used in federally funded research are derived
from human embryos that were created for reproductive purposes, are no longer needed for this purpose, and are voluntarily donated for
research purposes with the informed written consent of the donors. Those hES cells that were derived from embryos created for research
purposes rather than reproductive purposes, and other hES cells that were not derived in compliance with the guidelines, are not eligible
for use in federally funded research.

 California
State Regulations

 The
state of California has adopted legislation and regulations that require institutions that conduct stem cell research to notify, and
in certain cases obtain approval from, a Stem Cell Research Oversight Committee (SCRO Committee) before conducting the research. Under
certain California regulations, all hES cell lines that will be used in our research must be acceptably derived. California regulations
further require certain records to be maintained with respect to stem cell research and the materials used. AgeX programs that involve
the use of stem cells will be reviewed by a SCRO Committee to confirm compliance with federal and state guidelines. The hES cell lines
that we use are all on the NIH registry of lines that have been reviewed and meet standards for federal funding grants.

 Health
Insurance Portability and Accountability Act

 Under
HIPAA, HHS has issued regulations to protect the privacy and security of protected health information used or disclosed by health care
providers. HIPAA also regulates standardization of data content, codes, and formats used in health care transactions and standardization
of identifiers for health plans and providers. Penalties for violations of HIPAA regulations include civil and criminal penalties.

 The
requirements under these regulations may periodically change and could have an effect on our business operations if compliance becomes
substantially more costly than under current requirements. New laws governing privacy may also be adopted in the future. We can provide
no assurance that we will remain in compliance with diverse privacy requirements in all of the jurisdictions in which we do business.
Failure to comply with privacy requirements could result in civil or criminal penalties, which could have a materially adverse effect
on our business.

 Federal
and State Fraud and Abuse Laws

 We
are also subject to various laws pertaining to healthcare "fraud and abuse," including anti-kickback laws and false claims
laws. Anti-kickback laws make it illegal to solicit, offer, receive or pay any remuneration in exchange for or to induce the referral
of business, including the purchase or prescription of a particular drug that is reimbursed by a state or federal program. The term "remuneration"
has been broadly interpreted to include anything of value. Several courts have interpreted the statute's intent requirement to
mean that if any one purpose of an arrangement involving remuneration is to induce referrals of federal healthcare covered business,
the Anti-Kickback Statute has been violated. The Patient Protection and Affordable Care Act of 2010, as amended by the Health Care and
Education Reconciliation Act, collectively the Affordable Care Act (ACA), among other things, amended the intent requirement of the federal
Anti-Kickback Statute such that a person or entity no longer needs to have actual knowledge of the statute or specific intent to violate,
in order to commit a violation. Violations of fraud and abuse laws may be punishable by criminal and/or civil sanctions, including fines
and civil monetary penalties, as well as by the possibility of exclusion from federal healthcare programs (including Medicare and Medicaid).
Liability under the false claims laws may also arise when a violation of certain laws or regulations related to the underlying products
(e.g., violations regarding improper promotional activity or unlawful payments) contributes to the submission of a false claim.

 Additionally,
the FCPA prohibits U.S. corporations and their representatives from offering, promising, authorizing or making payments to any foreign
government official, government staff member, political party or political candidate in an attempt to obtain or retain business abroad.
The scope of the FCPA includes interactions with certain healthcare professionals in many countries. Other countries have enacted similar
anti-corruption laws and/or regulations.

 Healthcare
Reform

 In
the United States and foreign jurisdictions, there have been a number of legislative and regulatory changes to the healthcare system
that could affect our future results of operations. There have been and continue to be a number of initiatives at the United States federal
and state levels that seek to reduce healthcare costs.

 In
particular, the ACA has had, and is expected to continue to have, a significant impact on the healthcare industry. The ACA was designed
to expand coverage for the uninsured while at the same time containing overall healthcare costs. Substantial new provisions affecting
compliance have also been enacted, which may require us to modify our business practices with healthcare providers and entities, and
a significant number of provisions are not yet, or have only recently become, effective.

 Since
its enactment, there have been judicial and Congressional challenges to certain aspects of the ACA, and there may be additional challenges
and amendments to the ACA in the future, including efforts to implement changes to the law that may impact reimbursement for drugs and
biologics.

 Further,
there has been heightened government scrutiny over the manner in which manufacturers set prices for their marketed pharmaceutical products.
Such scrutiny has resulted in several recent Congressional inquiries and proposed and enacted federal and state legislation designed
to, among other things, bring more transparency to pharmaceutical product pricing, review the relationship between pricing and manufacturer
patient programs, and reform government program reimbursement methodologies for products. Such proposals have included, for example,
measures to permit Medicare Part D plans to negotiate the price of certain drugs under Medicare Part B and to allow some states to negotiate
drug prices under Medicaid. The Department of Health and Human Services has already started the process of soliciting feedback on some
of these measures and, at the same, is immediately implementing others under its existing authority. Although some of these and other
proposals will require authorization through additional legislation to become effective, Congress and the President are likely to continue
to seek new legislative and/or administrative measures to control drug costs. At the state level, legislatures have become increasingly
aggressive in passing legislation and implementing regulations designed to control pharmaceutical and biological product pricing, including
price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency
measures, and, in some cases, designed to encourage importation from other countries and bulk purchasing.

 It
is uncertain whether and how future legislation, whether domestic or foreign, could affect prospects for our product candidates or what
actions foreign, federal, state, or private payors for health care treatment and services may take in response to any such health care
reform proposals or legislation. Adoption of price controls and other cost-containment measures, and adoption of more restrictive policies
in jurisdictions with existing controls and measures reforms may prevent or limit our ability to generate revenue, attain profitability
or commercialize our product candidates.

the DSCSA imposes obligations on manufacturers of pharmaceutical products, among others, related to product tracking and tracing. While
some requirements of the DSCSA began in November 2014, many key requirements, development of standards, and the system for product tracing
will continue to be phased in until 2023. Among the requirements of the DSCSA, manufacturers will be required to provide certain information
regarding the drug product to individuals and entities to which product ownership is transferred, label drug product with a product identifier,
and keep certain records regarding the drug product. The transfer of information to subsequent product owners by manufacturers will eventually
be required to be done electronically. Manufacturers will also be required to verify that purchasers of the manufacturers' products
are appropriately licensed. Further, under this new legislation, manufacturers will have drug product investigation, quarantine, disposition,
and notification responsibilities related to counterfeit, diverted, stolen, and intentionally adulterated products, as well as products
that are the subject of fraudulent transactions or that are otherwise unfit for distribution such that they would be reasonably likely
to result in serious health consequences or death.

 Reimbursement

 Medicare,
Medicaid, and Third-Party Reimbursement Programs

 Sales
of the therapeutic products and medical devices that we and our subsidiaries may develop will depend, in part, on the extent to which
the costs of those products will be covered by third-party payors, such as government health programs, commercial insurance, and managed
healthcare organizations.

 The
containment of healthcare costs has become a priority of federal and state governments and the prices of drugs have been a focus in this
effort. In the United States, the federal and many state governments have adopted or proposed initiatives relating to Medicaid and other
health programs that may limit reimbursement or increase rebates that providers are required to pay to the state. The ACA increased many
of the mandatory discounts and rebates and imposed a new Branded Prescription Pharmaceutical Manufacturers and Importers fee payable
by manufacturers. Provisions of the Inflation Reduction Act of 2022 may impact the prices of drug products that are sold in the United
States, particularly through Medicare programs. Starting in 2023, a manufacturer of a drug or biological product covered by Medicare
Parts B or D must pay a rebate to the federal government if the product's price increases faster than the rate of inflation. This
calculation is made on a drug product by drug product basis and the amount of the rebate owed to the federal government is directly dependent
on the volume of a drug product that is paid for by Medicare Parts B or D. Additionally, starting in payment year 2026, CMS will negotiate
drug prices annually for a select number of single source Part D drugs without generic or biosimilar competition. CMS will also negotiate
drug prices for a select number of Part B drugs starting for payment year 2028. If a drug product is selected by CMS for negotiation,
it is expected that the revenue generated from such drug will decrease.

 In
addition to government regulation, managed care organizations in the United States, which include medical insurance companies, medical
plan administrators, health-maintenance organizations, hospital and physician alliances and pharmacy benefit managers, continue to put
pressure on the price and usage of healthcare products. Managed care organizations and third-party payers seek to contain healthcare
expenditures, and their purchasing strength has been increasing due to their consolidation into fewer, larger organizations and a growing
number of enrolled patients. Adoption of price controls, cost-containment measures, and more restrictive policies in jurisdictions with
existing controls and measures, could further limit our net revenue and results. If third-party payors do not consider the products we
develop to be cost-effective compared to other therapies, they may not cover our products as a benefit under their plans or, if they
do, the level of payment may not be sufficient to allow us to sell our products on a profitable basis.

 Other
legislative and regulatory actions that would have a significant impact include: changes to coverage and payment for biosimilars, including
the current Medicare biosimilar coverage and payment policies intended to encourage biosimilar adoption, or other policies that provide
easier substitution or reimbursement advantages. The adoption of new healthcare legislation remains uncertain, but impending changes
will likely impact the number of patient lives covered, the quality of the insurance, Medicaid eligibility and the level of patient protections
provided.

 We
face similar issues outside of the United States. In some non-U.S. jurisdictions, the proposed pricing for a drug must be approved before
it may be lawfully marketed. The requirements governing drug pricing vary widely from country to country. For example, the EU provides
options for its member states to restrict the range of medicinal products for which their national health insurance systems provide reimbursement
and to control the prices of medicinal products for human use. A member state may approve a specific price for aa medicinal product,
or it may instead adopt a system of direct or indirect controls on the profitability of placing a medicinal product on the market. There
can be no assurance that any country that has price controls or reimbursement limitations for pharmaceutical products will allow favorable
reimbursement and pricing arrangements for any of our products. Historically, products launched in the EU do not follow price structures
of the United States and generally tend to be significantly lower.

 Employees

 As
of December 31, 2023, we employed four persons on a full-time basis and four persons on a part-time basis. Two of these employees hold
a Ph. D.

 Additional
Information

 AgeX
was incorporated in the State of Delaware on January 6, 2017. Our common stock began trading on the NYSE American on November 29, 2018
and trade under the symbol "AGE." Our mailing address is 1101 Marina Village Parkway, Suite 201, Alameda, CA 94501 and our
phone number is (510) 671-8370. Our website address is www.agexinc.com. The information on, or that can be accessed through our website
is not part of this Report. We make available, free of charge through our website, our most recent annual report on Form 10-K, quarterly
reports on Form 10-Q, current reports on Form 8-K, and any amendments to those reports, as soon as reasonably practicable after the reports
are electronically filed with or furnished to the SEC.

 iTR TM,
UniverCyte TM, Renelon, and EPRO are trademarks of AgeX. PureStem is a registered trademark of
Lineage Cell Therapeutics, Inc.

 Emerging
Growth Company

 We
are an "emerging growth company" under the Jumpstart our Business Startups Act of 2012 or the JOBS Act. As an emerging growth
company, we may take advantage of specified reduced disclosure and other requirements that are otherwise applicable, in general, to public
companies that are not emerging growth companies. These provisions include:

 reduced
 disclosure about our executive compensation arrangements;

 no
 non-binding stockholder advisory votes on executive compensation or golden parachute arrangements; and

 exemption
 from the auditor attestation requirement in the assessment of our internal control over financial reporting.

 We
will remain an "emerging growth company" until the earliest of: (i) the last day of the fiscal year in which we have total
annual gross revenues of $1.07 billion or more; (ii) the last day of our fiscal year following the fifth anniversary of the date of the
first sale of our common equity securities pursuant to an effective registration statement under the Securities Act; (iii) the date on
which we have issued more than $1.0 billion in nonconvertible debt securities during the previous three years; or (iv) the date on which
we are deemed to be a "large accelerated filer" under the Securities Exchange Act of 1934, as amended (the Exchange Act).

 The
JOBS Act permits an emerging growth company to take advantage of an extended transition period to comply with new or revised accounting
standards applicable to public companies. However, we have elected to comply with newly adopted or revised accounting standards when
they become applicable to public companies because our financial statements were previously consolidated with those of our former parent
company Lineage which is not an emerging growth company under the JOBS Act and is therefore not permitted to delay the adoption of new
or revised accounting standards that become applicable to public companies. This election under the JOBS Act to not delay the adoption
of new or revised accounting standards is irrevocable.

 Item
1A. Risk Factors

 Our
business is subject to various risks, including those described below. You should consider the following risk factors, together with
all of the other information included in this Report, which could materially adversely affect our proposed operations, our business prospects,
and financial condition, and the value of an investment in our business. There may be other factors that are not mentioned here or of
which we are not presently aware that could also affect our business operations and prospects.

 Risks
Related to the Merger

 The
relative proportion of the Combined Company that AgeX stockholders will own immediately following the closing of the Merger is not adjustable
based on the market price of AgeX common stock unless the "Actual Closing Price" of AgeX common stock (determined in accordance
with the Merger Agreement) is less than $12.00 per share. If the Actual Closing Price of AgeX common stock is less than $12.00 per share,
AgeX has the option to issue additional AgeX common stock to Serina stockholders in the amount necessary to equal the Target Merger Consideration
Minimum (as defined in the Merger Agreement), which, in such circumstances, could proportionally decrease the amount of the Combined
Company that AgeX stockholders would own immediately following the closing of the Merger. Accordingly, the Merger consideration at the
closing of the Merger may have a greater or lesser value than at the time the Merger Agreement was signed.

 The
relative proportion of the Combined Company that AgeX stockholders will own immediately following the closing of the Merger is based
on the relative valuations of AgeX and Serina as negotiated by the parties and as specified in the Merger Agreement. At the effective
time of the Merger, outstanding shares of Serina common stock will be converted into shares of AgeX common stock. Immediately following
the Merger, equity holders of Serina immediately prior to the closing of the Merger are expected to own approximately 75% of the outstanding
shares of the common stock of the Combined Company, and equity holders of AgeX immediately prior to the closing of the Merger are expected
to own approximately 25% of the outstanding shares of common stock of the Combined Company, in each case, on a pro forma fully diluted
basis, subject to certain assumptions and exclusions. It is a closing condition of the Merger that the Actual Closing Price of a share
of AgeX common stock is not less than $12.00 per share. However, if the Actual Closing Price of a share of AgeX common stock is less
than $12.00 per share, AgeX has the option to satisfy such closing condition by issuing additional AgeX common stock to Serina stockholders
in the amount necessary to equal the Target Merger Consideration Minimum (as defined below), which is equal to $12.00 multiplied by the
anticipated aggregate number of shares of AgeX common stock to be issued (approximately 7,500,000 shares prior to any such adjustment),
and, in such circumstances, AgeX stockholders immediately prior to the closing of the Merger could own a smaller percentage, and Serina
stockholders immediately prior to the closing of the Merger could own a larger percentage, of the Combined Company following the closing
of the Merger. The exercise of this option would also affect the exchange ratio.

 In
addition, changes in the market price of AgeX common stock before the completion of the Merger may not affect the number of shares Serina
stockholders will be entitled to receive pursuant to the Merger Agreement so long as the Actual Closing Price of AgeX common stock is
equal to or greater than $12.00 per share. If before the completion of the Merger, the market price of AgeX common stock increases to
be greater than $12.00 per share, then Serina stockholders could receive merger consideration with substantially more value for their
shares of Serina capital stock than the parties had negotiated when they established the relative ownership proportions of the Combined
Company immediately following the closing of the Merger and the exchange ratio.

 Assessing
the value of AgeX and Serina through a relative valuation as opposed to an absolute valuation carries potential risk.

 The
AgeX Board of Directors did not use a dollar or absolute value in determining the relative ownership of AgeX and Serina in the Combined
Company. The relative valuations calculated for AgeX and Serina were established based on, among other factors, AgeX's market capitalization
and Serina's most recent valuation in connection with a capital raise prior to the Merger, AgeX's and Serina's operations
prior to the Merger, AgeX's debt accumulated prior to the Merger and consideration of general market conditions for early-stage
life sciences companies. Assessing the value of AgeX and Serina through a relative valuation as opposed to an absolute valuation (i.e.,
a valuation expressed in currency) carries potential risk. If the public markets determine that the relative valuation ascribed to AgeX
or Serina is too high or too low, the price of the Combined Company's common stock may decline following the Merger.

 Failure
to complete the Merger may result in AgeX or Serina paying a termination fee or reimbursement of expenses to the other party and could
harm the common stock price of AgeX and AgeX's future business and operations.

 If
the Merger is not completed, each of AgeX is subject to the following risks:

 upon
 termination of the Merger Agreement, AgeX may be required to pay Serina a termination fee of $1,000,000 or up to $1,000,000 in expense
 reimbursements; provided that AgeX will not be responsible for payment of more than $1,000,000 in the aggregate;

 AgeX
 has incurred significant expenses related to the Merger, such as legal and accounting fees, which must be paid even if the Merger
 is not completed;

 the
 price of AgeX's common stock may decline and remain volatile; and

 the
 reputation of AgeX may be adversely impacted.

 In
addition, if the Merger Agreement is terminated and AgeX determines to seek another business combination, there can be no assurance that
AgeX will be able to find a partner willing to provide equivalent or more attractive consideration than the consideration to be provided
by Serina in the Merger, or any partner at all.

 If
the conditions to the closing of the Merger are not satisfied or waived, the Merger may not occur or the closing of the Merger could
be delayed.

 Even
though AgeX and Serina have obtained the approvals of their respective stockholders required for the Merger and the related transactions,
specified conditions set forth in the Merger Agreement must be satisfied or, to the extent permitted by applicable law, waived to complete
the Merger. There is no assurance that all of the conditions will be satisfied or waived. One of the conditions is that at the time
of the Merger AgeX must have on hand $500,000 of immediately spendable nonrestricted cash, net of all payables and other "Liabilities"
as defined in the Merger Agreement. In order to meet that condition, AgeX will need to obtain additional cash through a loan or other
financing the availability and terms of which cannot be assured. If the conditions are not satisfied or waived, the Merger may not
occur or could be delayed, and AgeX may lose some or all of the intended benefits of the Merger.

 The
Merger may be completed even though material adverse changes may result from the announcement of the Merger, industry-wide changes and/or
other causes.

 In
general, either AgeX or Serina can refuse to complete the Merger if there is a material adverse effect affecting the other party between
August 29, 2023, the date of the Merger Agreement, and the closing of the Merger. However, certain types of effects are excluded from
the concept of a "material adverse effect" and do not permit the parties to refuse to complete the Merger, even if such change
could be said to have a material adverse effect on AgeX or Serina. Such exclusions included, but are not limited to:

 general
 business, political or economic conditions generally affecting the industry in which Serina or AgeX operate;

 acts
 of war, the outbreak or escalation of armed hostilities, acts of terrorism, earthquakes, wildfires, hurricanes or other natural disasters,
 health emergencies, including pandemics (including COVID-19 and any evolutions or mutations thereof) and related or associated epidemics,
 disease outbreaks or quarantine restrictions;

 in financial, banking or securities markets;

 any
 change in the stock price or trading volume of AgeX common stock;

 any
 failure by AgeX to meet internal or analysts' expectations or projections or the results of operations of AgeX;

 any
 change in or affecting clinical trial programs or studies conducted by or on behalf of AgeX or its subsidiaries;

 any
 change from continued losses from operations or decreases in cash balances of Serina or any of its subsidiaries or on a consolidated
 basis among Serina and its subsidiaries;

 any
 change in, or any compliance with or action taken for the purpose of complying with, any law or GAAP (or interpretations of any law
 or GAAP); or

 any
 change resulting from the announcement of the Merger Agreement or the pendency of the transactions related to the Merger;

 any
 change resulting from any disposition of assets permitted by the Merger Agreement;

 the
 taking of any action required to be taken by the Merger Agreement; or

 any
 reduction in the amount of AgeX's cash and cash equivalents as a result of winding down its activities associated with the
 termination of its research and development activities.

 If
adverse changes occur and AgeX and Serina still complete the Merger, the stock price of the Combined Company following the closing of
the Merger may suffer. This in turn may reduce the value of the Merger to the stockholders of AgeX.

 Some
executive officers and directors of AgeX and Serina have interests in the Merger that are different from the respective stockholders
of AgeX and Serina and that may influence them to support or approve the Merger without regard to the interests of the respective stockholders
of AgeX and Serina.

and executive officers of AgeX and Serina may have interests in the Merger that are different from, or in addition to, the interests
of other stockholders of AgeX and Serina, respectively. These interests with respect to AgeX's directors and executive officers
include, but are not limited to, the expected continued service of one of the directors of AgeX as a director of the Combined Company
following the closing of the Merger, the expected continued employment of one of the executive officers of AgeX as an executive officer
of the Combined Company following the closing of the Merger, severance benefits if employment is terminated in a qualifying termination
in connection with the Merger and rights to continued indemnification, expense advancement and insurance coverage. These interests with
respect to Serina's directors and executive officers include, but are not limited to, the expected continued service of two of
the directors of Serina as directors of the Combined Company following the closing of the Merger, the expected continued employment of
three of the executive officers of Serina as executive officers of the Combined Company following the closing of the Merger and rights
to continued indemnification and expense advancement.

 The
AgeX Board and Serina Board were aware of and considered such interests, among other matters, in reaching their decisions to approve
and adopt the Merger Agreement, approve the Merger and recommend the approval of the Merger Agreement to AgeX and Serina stockholders.
These interests, among other factors, may have influenced the directors and executive officers of AgeX and Serina to support or approve
the Merger.

 AgeX
stockholders may not realize a benefit from the Merger commensurate with the ownership interest dilution they will experience in connection
with the Merger.

 If
the Combined Company is unable to realize the full strategic and financial benefits currently anticipated from the Merger, AgeX stockholders
will have experienced substantial dilution of their ownership interests without receiving any commensurate benefit, or only receiving
part of the commensurate benefit to the extent the Combined Company is able to realize only part of the strategic and financial benefits
currently anticipated from the Merger.

 If
the Merger is not completed, the market price of AgeX common stock may decline significantly.

 The
market price of AgeX common stock is subject to significant fluctuations. Market prices for securities of pharmaceutical, biotechnology
and other life science companies have historically been particularly volatile. In addition, the market price of AgeX common stock will
likely be volatile based on whether stockholders and other investors believe that AgeX can complete the Merger. The volatility of the
market price of AgeX common stock has been and may be exacerbated by low trading volume. Additional factors that may cause the market
price of AgeX common stock to fluctuate include, but are not limited to:

 the
 entry into, or termination of, key agreements, including commercial partner agreements;

 announcements
 by commercial partners or competitors of new commercial products, clinical progress or lack thereof, significant contracts, commercial
 relationships or capital commitments;

 the
 loss of key employees;

 future
 sales of its common stock;

 general
 and industry-specific economic conditions that may affect its research and development expenditures;

 the
 failure to meet industry analyst expectations; and

 period-to-period
 fluctuations in financial results.

the stock markets in general have experienced substantial volatility that has often been unrelated to the operating performance of individual
companies. These broad market fluctuations may also adversely affect the trading price of AgeX common stock. In the past, following periods
of volatility in the market price of a company's securities, stockholders have often instituted class action securities litigation
against such companies.

 The
market price of the Combined Company's common stock following the Merger may decline as a result of the Merger.

 The
market price of the Combined Company's common stock may decline as a result of the Merger for a number of reasons, including if:

 investors
 react negatively to the prospects of the Combined Company's product candidates, business and financial condition following
 the closing of the Merger;

 the
 effect of the Merger on the Combined Company's business and prospects following the closing of the Merger is not consistent
 with the expectations of financial or industry analysts; or

 the
 Combined Company does not achieve the perceived benefits of the Merger as rapidly or to the extent anticipated by stockholders or
 financial or industry analysts.

 AgeX
stockholders will have a reduced ownership and voting interest in, and will exercise less influence over the management of, the Combined
Company following the closing of the Merger as compared to their current ownership and voting interest in AgeX.

 Immediately
following the closing of the Merger, equity holders of Serina immediately prior to the closing of the Merger are expected to own approximately
75% of the outstanding shares of common stock of the Combined Company, and equity holders of AgeX immediately prior to the closing of
the Merger are expected to own, excluding the impact of the exercise of any post-merger warrant or incentive warrant, approximately 25%
of the outstanding shares of common stock of the Combined Company, in each case, on a pro forma fully diluted basis, subject to certain
assumptions. The exchange ratio formula is based upon a fixed percentage of the post-Merger outstanding shares of the Combined Company
common stock, expressed on a fully-diluted and as-converted basis, subject to certain adjustments and exclusions.

 In
addition, the seven-member board of directors of the Combined Company will initially be comprised of (a) Remy Gross, designated by both
AgeX and Serina, (b) J. Milton Harris and Steve Ledger, each as a Serina designee, (c) Gregory H. Bailey and Richard Marshall, each as
an AgeX designee, and (d) Steven Mintz, as an independent director, until their respective successors are duly elected or appointed and
qualified or their earlier death, resignation or removal. The remaining vacancy on the Combined Company Board will be filled by an individual
that qualifies as an independent director at a later date. The Chief Financial Officer, the Chief Executive Officer and the Chief Operating
Officer of Serina will serve as the Interim Chief Executive Officer, Chief Scientific Officer and Chief Operating Officer and Secretary
of the Combined Company, respectively, following the closing of the Merger. The Chief Financial Officer of AgeX will serve as the Interim
Chief Financial Officer and Chief Accounting Officer of the Combined Company following the closing of the Merger.

 Consequently,
following the closing of the Merger, the pre-Merger equity holders of AgeX will own a smaller percentage of the Combined Company than
their ownership of AgeX prior to the Merger and will be able to exercise less influence over the management and policies of the Combined
Company than they currently exercise over the management and policies of AgeX.

the pendency of the Merger Agreement, AgeX may be limited in its ability to enter into a business combination with another party on more
favorable terms because of restrictions in the Merger Agreement, which could adversely affect AgeX's business prospects.

 Covenants
in the Merger Agreement impede the ability of AgeX and Serina to make acquisitions during the pendency of the Merger, subject to specified
exceptions. As a result, if the Merger is not completed, AgeX as well as Serina may be at a disadvantage to their competitors during
that period. In addition, while the Merger Agreement is in effect, each party is generally prohibited from soliciting, initiating or
knowingly encouraging, inducing or facilitating the communication, making, submission or announcement of any acquisition proposal or
acquisition inquiry or taking any action that could reasonably be expected to lead to an acquisition proposal or acquisition inquiry
regarding transactions involving a third party, including a merger, sale of assets or other business combination, subject to specified
exceptions. Any such transactions could be favorable to such party's stockholders, but the parties may be unable to pursue them.

provisions of the Merger Agreement may discourage third parties from submitting competing proposals, including proposals that may be
superior to the transactions contemplated by the Merger Agreement.

 The
terms of the Merger Agreement prohibit each of AgeX and Serina from soliciting competing proposals or cooperating with persons making
unsolicited takeover proposals, except in limited circumstances. In addition, if AgeX or Serina terminate the Merger Agreement under
specified circumstances, AgeX may be required to pay Serina a termination fee of $1,000,000 or up to $1,000,000 in expense reimbursements
or Serina may be required to pay AgeX a termination fee of $1,000,000 or up to $1,000,000 in expense reimbursements; provided that neither
party will be responsible for payment of more than $1,000,000 in the aggregate. The termination fee or expense reimbursements may discourage
third parties from submitting competing proposals to AgeX or AgeX stockholders and may cause the AgeX Board to be less inclined to recommend
a competing proposal.

the lack of a public market for Serina's capital stock makes it difficult to evaluate the fair market value of Serina's capital
stock, the value of the AgeX common stock to be issued to Serina stockholders may be more or less than the fair market value of Serina

 The
outstanding capital stock of Serina is privately held and is not traded in any public market. The lack of a public market makes it difficult
to determine the fair market value of Serina's capital stock. Because the percentage of AgeX equity to be issued to Serina stockholders
was determined based on negotiations between the parties, it is possible that the value of the AgeX common stock to be received by Serina
stockholders will be more or less than the fair market value of Serina's capital stock.

 Litigation
has been filed but dismissed but and additional litigation could in the future arise in connection with the Merger, against AgeX, the
AgeX Board, Serina or the Serina Board, which could be costly, prevent the consummation of the Merger, divert management's attention
and otherwise materially harm AgeX's, Serina's or the Combined Company's business.

 In
the past, securities class action or shareholder derivative litigation has often followed certain significant business transactions,
such as the sale of a company or announcement of a merger or any other strategic transaction. AgeX and the AgeX Board has been, and Serina,
the Serina Board or the Combined Company may be exposed to such litigation in connection with the Merger and may in the future be exposed
to additional litigation even if no wrongdoing occurred. Litigation is usually expensive and diverts management's attention and
resources, which could adversely affect the business and cash resources or either party and the ability of either party to consummate
the Merger or the ultimate value the AgeX stockholders receive in from the Merger.

 If
the Merger is not consummated for any reason, litigation could be filed in connection with the failure to consummate the Merger. Any
litigation related to the Merger may result in negative publicity or an unfavorable impression of AgeX, which could adversely affect
the price of AgeX common stock, impair the ability of AgeX to recruit or retain employees, damage relationships with customers, suppliers,
and other business partners, or otherwise materially harm of AgeX's operations and financial performance.

 Risks
Related to the Reverse Stock Split

 The
Reverse Stock Split may not increase the Combined Company's stock price over the long-term.

 While
it is expected that the reduction in the number of outstanding shares of common stock as a result of the Reverse Stock Split will proportionally
increase the market price of AgeX common stock, it cannot be assured that the Reverse Stock Split will increase the market price of AgeX
common stock by a multiple of the Reverse Stock Split ratio or result in any other permanent or sustained increase in the market price
of the Combined Company's common stock, which is dependent upon many factors, including the Combined Company's business and
financial performance, general market conditions and prospects for future success. Thus, it cannot be assured that the Reverse Stock
Split will accomplish any increase in the per-share market price of the Combined Company's common stock for any meaningful period
of time.

 The
Reverse Stock Split may decrease the liquidity of AgeX common stock or the Combined Company's common stock.

 Although
the AgeX Board believes that the anticipated increase in the market price of the Combined Company's common stock resulting from
the proposed Reverse Stock Split could encourage interest in its common stock and possibly promote greater liquidity for its stockholders,
such liquidity could also be adversely affected by the reduced number of shares outstanding after the Reverse Stock Split. The reduction
in the number of outstanding shares may lead to reduced trading in and a smaller number of market makers for the Combined Company's

 The
Reverse Stock Split may lead to a decrease in the Combined Company's overall market capitalization.

 Should
the market price of the Combined Company's common stock decline after the Reverse Stock Split, the percentage decline may be greater,
due to the smaller number of shares outstanding, than it would have been prior to the Reverse Stock Split. A Reverse Stock Split is often
viewed negatively by the market and, consequently, can lead to a decrease in the Combined Company's overall market capitalization.
If the per-share market price does not increase in proportion to the Reverse Stock Split ratio, then the value of the Combined Company,
as measured by its stock capitalization, will be reduced. In some cases, the per-share stock price of companies that have effected Reverse
Stock Splits subsequently declined back to pre-reverse split levels, and accordingly, it cannot be assured that the total market value
of the Combined Company's common stock will remain the same after the Reverse Stock Split is effected, or that the Reverse Stock
Split will not have an adverse effect on the Combined Company's stock price due to the reduced number of shares outstanding after
the Reverse Stock Split.

 Risks
Related to AgeX

 If
the Merger is not completed, we expect to continue to execute on our current business strategies while seeking out and evaluating potential
strategic alternatives with respect to our assets and development programs, and, accordingly, our business will be subject to the risks
described in this subsection titled "Risks Related to AgeX." If the Merger is completed, the Combined Company would face
many of the same risks as AgeX described below, including but not limited to: compliance with domestic and foreign laws and government
regulation, including regulation by the FDA and comparable foreign regulatory agencies; risks pertaining to conducting clinical trials;
competition; staffing; product liability risks; obtaining Medicare reimbursement approval for any medical products that may be commercialized;
patent and other intellectual property protection matters; obtaining sufficient financing for operations; risks related to Juvenescence's
stock ownership, which is expected to be significant immediately after the Merger though less than 50% of the outstanding common stock,
and secured loans from Juvenescence, reliance on relationships with third parties; system security matters and internal control over
financial reporting; and matters pertaining to the trading of the common stock.

 Risks
Related to Our Current Business, Financial Condition and Capital Resources

 We
need additional financing to execute our operating plan and continue to operate as a going concern.

 As
required under Accounting Standards Update 2014-15, Presentation of Financial Statements-Going Concern (ASC 205-40), we have the responsibility
to evaluate whether conditions and/or events raise substantial doubt about our ability to meet our future financial obligations as they
become due within one year after the date the financial statements are issued. Based on our most recent projected cash flows, we believe
that our cash and cash equivalents and the amount of credit remaining available from Juvenescence under an Amended and Restated Secured
Convertible Promissory Note, dated February 14, 2022, as amended on February 9, 2023, November 9, 2023 and February 9, 2024 (the 2022
Secured Note), would not be sufficient to satisfy our anticipated operating and other funding requirements for the next twelve months
from the date of filing of this Report. These factors raise substantial doubt regarding our ability to continue as a going concern and
the report of our independent registered public accountants accompanying our audited consolidated financial statements included elsewhere
in this Report contains a qualification to such effect.

 We
have incurred operating losses and negative cash flows since inception and had an accumulated deficit of $131.0 million as of December
31, 2023. We expect to continue to incur operating losses and negative cash flows. Because we will continue to experience operating losses,
our ability to continue as a going concern is subject to our ability to obtain necessary capital from outside sources, including obtaining
additional capital from the sale of AgeX common stock or other equity securities or assets, obtaining additional loans from financial
institutions or investors, and entering into collaborative research and development arrangements or licensing some or all of our patents
and know-how to third parties while retaining a royalty and other contingent payment rights related to the development and commercialization
of products covered by the licenses. Our continued operating losses, the amount of our debt obligations to Juvenescence and the provisions
of our indebtedness agreements with them, including restrictions on the use of loan funds and the security interest they hold in our
assets and assets of certain of our subsidiaries, Juvenescence's ownership of shares of AgeX Preferred Stock, the risks associated
with the development of our product candidates and technologies, and our deferral of in-house development of our product candidates and
technologies in connection with our reductions in staffing and the closing of our research laboratory facilities, will increase the difficulty
in obtaining such capital, and there can be no assurances that we will be able to obtain such capital on favorable terms or at all. If
we are unable to raise capital when needed, we may be forced to delay, reduce or eliminate our research and development activities, or
ultimately not be able to continue as a going concern.

 We
are a discovery-stage development company with limited capital resources and have incurred operating losses since our inception. We anticipate
that we will incur continued losses for the foreseeable future and will need to continue to raise capital to finance our operations,
and we do not know if we will ever attain profitability.

 We
are a discovery-stage therapeutics company with a limited operating history and limited capital resources. Since our inception in August
2017, we have incurred operating losses and negative cash flows and we expect to continue to incur losses and negative cash flow in the
future. Our net loss from operations were $14.8 million and $10.5 million for the years ended December 31, 2023 and 2022, respectively,
and we had an accumulated deficit of approximately $131.0 million as of December 31, 2023.

 These
net losses and negative cash flows have had, and will continue to have, an adverse effect on our stockholders' equity and working
capital. We expect to continue to incur significant additional operating losses for the foreseeable future and will need to continuously
raise additional capital to fund our operations. The amount of our expenses and anticipated losses will depend on our capital resources
and whether we license out product development to third parties or participate ourselves directly or financially with collaborators in
research, development and commercialization efforts. Although we do not expect to advance our product candidates through clinical trials,
seek regulatory approval, or commercialize our product candidates ourselves, our capital needs would increase greatly if we were to change
plans and determine to do so.

 The
amount of our future net losses will depend, in part, on the rate of future growth of our expenses, our ability to raise the capital
needed to continue our operations, and our ability to generate revenues. If we or any licensees or collaborators are unable to develop
and commercialize one or more of our product candidates, or if revenues from any product candidates that receive marketing approval are
insufficient, we will not achieve profitability. Even if we do achieve profitability, we may not be able to sustain or increase profitability.
If we are unable to achieve and then maintain profitability, the value of our equity securities will be materially and adversely affected.

 We
are highly leveraged, carrying a significant amount of indebtedness, including indebtedness secured by our assets, that will become due
and payable over the next three years and there is no assurance that we will be able to refinance those obligations as they become due.

 As
of March 20, 2024, our borrowings from Juvenescence under various loans and accrued origination fees outstanding totaled approximately
$8.1 million. The outstanding balances of those loans will become due and payable as follows: approximately $7.4 million
on May 9, 2024 under the 2022 Secured Note and $692,800 on March 13, 2026 under a $10 million principal amount Secured Convertible Promissory
Note, dated March 13, 2023 (the "2023 Secured Note"). During November 2023, we entered into an amendment of the 2022 Secured
Note pursuant to which we borrowed an additional $4,400,000 from Juvenescence. Our obligations under the 2022 Secured Note
and the 2023 Secured Note are collateralized by all of our assets, including the shares of common stock we hold in subsidiaries ReCyte,
Reverse Bio, and UniverXome under the terms of an Amended and Restated Security Agreement (the "Security Agreement"), and
those subsidiaries have guaranteed our obligations under the Secured Note, as amended, and have granted a security interest in their
respective assets to Juvenescence pursuant to the Security Agreement to secure those obligations. If an Event of Default, as defined
in the 2022 Secured Note or the 2023 Secured Note, were to occur Juvenescence could foreclose on its security interest and sell our assets
and the assets of those subsidiaries to satisfy the unpaid principal balances of those loans plus certain loan origination fees and costs
incurred in connection with the Event of Default and the foreclosure and sale of the assets. As a result, we and those subsidiaries could
lose some or all of our respective assets, leaving few if any assets available for the operation of our business or the businesses of
our subsidiaries, or for sale for the benefit of our stockholders through a winding up of our affairs and liquidation of our assets.
Although we plan to transfer most of our assets to UniverXome and to restructure our indebtedness with Juvenescence so that UniverXome
will replace AgeX as the borrower and will assume AgeX's obligations under the 2022 Secured Note and 2023 Secured Note and the
Security Agreement, Juvenescence will retain its security interest in the assets we transfer to UniverXome and would be entitled to foreclose
on its security interest under the Security Agreement if an Event of Default were to occur after UniverXome assumes AgeX's obligations.

 The
terms of our loans from Juvenescence and the Security Agreement could make it more difficult for us to raise additional capital from
other sources.

 The
terms of our loans from Juvenescence include certain covenants that among other matters such as financial reporting: (i) impose financial
restrictions on AgeX while the loans remain unpaid, including restrictions on the incurrence of additional indebtedness by AgeX and its
subsidiaries, except that Reverse Bio will be permitted to incur debt convertible into equity not guaranteed or secured by the assets
of AgeX or any other AgeX subsidiary; (ii) require that AgeX use loan proceeds and funds that may be raised through certain equity offerings
only for research and development work, professional and administrative expenses, for general working capital, and for repayment of all
or a portion of AgeX's indebtedness to Juvenescence; and (iii) prohibit AgeX from making additional investments in subsidiaries,
unless AgeX obtains the written consent of Juvenescence to a transaction that otherwise would be prohibited or restricted. Further, our
obligations under the 2022 Secured Note and 2023 Secured Note are collateralized by all of our assets under the terms of the Security
Agreement. Accordingly, the terms of our loans from Juvenescence, and the grant of a security interest in our assets pursuant to the
Security Agreement to secure our obligations for the repayment of the 2022 Secured Note and 2023 Secured Note with applicable loan fees
that become due, could make AgeX less attractive to new equity investors and could impair our ability to finance our operations or the
operations of our subsidiaries from sources other than Juvenescence. Although we plan to transfer most of our assets
to UniverXome and to restructure our indebtedness with Juvenescence so that UniverXome will replace AgeX as the borrower
and will assume AgeX's obligations under the 2022 Secured Note and 2023 Secured Note and the Security Agreement,
the amount and terms of the indebtedness owed to Juvenescence by UniverXome, and Juvenescence's continuing security interest in
the assets held by UniverXome to secure its obligations to Juvenescence could still make AgeX less attractive to new equity investors
and could impair our ability to finance our operations or the operations of UniverXome and our other subsidiaries from sources other
than Juvenescence.

 Raising
additional capital may cause dilution to our stockholders, restrict our operations or require us to relinquish rights to our technologies
or product candidates.

 Until
such time, if ever, as we can generate substantial revenue, we may finance our cash needs through a combination of equity offerings,
debt financings, strategic alliances and licensing arrangements. We do not currently have any committed external source of funds. We
will need to seek additional capital regardless of market conditions and the terms of any financings that may be available to us.

 To
the extent that we raise additional capital through the sale of shares of AgeX common stock or other equity securities, AgeX your ownership
interest will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect your rights
as a common stockholder. Similarly, if any of our subsidiaries raise capital through the sale of equity securities or convertible debt
securities AgeX's interest in those subsidiaries will be diluted and the terms of equity securities issued by those subsidiaries
may include liquidation or other preferences that adversely affect our rights as a common stockholder of the subsidiary.

 Debt
financing and preferred equity financing, if available, may involve agreements that include covenants limiting or restricting our ability
to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends. If we or any of our
subsidiaries raise additional funds through collaborations, strategic alliances or marketing, distribution or licensing arrangements
with third parties, we or our subsidiaries may be required to relinquish valuable rights to key technologies, future revenue streams,
or product candidates, and any such licenses may be granted on terms that may not be favorable to us. If we or our subsidiaries are unable
to raise additional funds through equity or debt financings when needed, we may be required to delay, limit, reduce or terminate our
product development or future commercialization efforts or grant rights to develop and market product candidates that we would otherwise
prefer to develop and market ourselves.

 Unless
AgeX common stock continues to be listed on a national securities exchange, AgeX will become subject to the so-called "penny stock"
rules that impose restrictive sales practice requirements.

 On
November 17, 2021, we received a letter (the Deficiency Letter) from the staff of the NYSE American indicating that AgeX did not meet
certain of the NYSE American continued listing standards as set forth in Section 1003(a)(i) of the NYSE American Company Guide in that
we had stockholders' equity of less than $2,000,000 and had incurred losses from continuing operations and/or net losses during
our two most recent fiscal years. Pursuant to Section 1009 of the NYSE American Company Guide and as provided in the Deficiency Letter
provided, we provided the NYSE American staff with a plan (the Compliance Plan) advising the NYSE American staff of action we had taken
and will take that would bring AgeX into compliance with the NYSE American continued listing standards. The NYSE American staff accepted
our Compliance Plan but later required us to revise the Compliance Plan as we remained out of listing compliance. On November 22, 2022,
we received a notification from the staff of the NYSE American indicating that the NYSE American accepted our revised listing Compliance
Plan and granted us an extension of time to regain compliance with the NYSE American continued listing standards as set forth in Section
1003(a)(i) and (ii) of the NYSE American Company Guide by increasing our stockholders equity to not less than $4,000,000. On May 17,
2023, we received a notice from the staff of the NYSE American indicating that they intend to commence proceedings to delist AgeX common
stock from the NYSE American based upon AgeX's non-compliance with the stockholders' equity requirements set forth in Sections
1003(a)(i), (ii) and (iii) of the NYSE American Company Guide by the end of a compliance plan period that expired on May 17, 2023. Specifically,
AgeX did not meet the continued listing standards because it had stockholders equity of less than (A) $2,000,000 and has incurred losses
from continuing operations and/or net losses during its two most recent fiscal years, (B) $4,000,000 and had incurred losses from continuing
operations and/or net losses during three out of four of its most recent fiscal years, and (C) $6,000,000 or more and had reported losses
from continuing operations and/or net losses in its five most recent fiscal years. On May 24, 2023, AgeX filed a request for a review
of the delisting determination by a committee of the board of directors of the NYSE American. On May 31, 2023, AgeX received a notice
from the staff of the NYSE American which scheduled a hearing for July 25, 2023. On July 24, 2023, AgeX issued shares of AgeX Series
A preferred stock and AgeX Series B preferred stock to Juvenescence in exchange for the extinguishment of $36 million of indebtedness
owed to Juvenescence with the intent of adding $36 million to stockholders equity and returning AgeX to compliance with the NYSE American
continued listing standards. However, due to the incurrence of subsequent losses from operations, AgeX's stockholders equity declined
below $6,000,000 as of December 31, 2023 which could result in the NYSE American initiating delisting proceedings again unless the Merger
is consummated and the NYSE American approves listing of the common stock of the Combined Company or unless AgeX raises additional equity
capital sufficient to bring its stockholders equity into compliance with the continued listing standards.

 If
we are unable to maintain the listing of AgeX common stock on the NYSE American or another national securities exchange, AgeX common
stock could become subject to the so-called "penny stock" rules if the shares have a market value of less than $5.00 per
share. The SEC has adopted regulations that define a penny stock to include any stock that has a market price of less than $5.00 per
share, subject to certain exceptions, including an exception for stock traded on a national securities exchange. The SEC regulations
impose restrictive sales practice requirements on broker-dealers who sell penny stocks to persons other than established customers and
accredited investors. An accredited investor generally is a person whose individual annual income exceeded $200,000, or whose joint annual
income with a spouse exceeded $300,000 during the past two years and who expects their annual income to exceed the applicable level during
the current year, or a person with net worth in excess of $1.0 million, not including the value of the investor's principal residence
and excluding mortgage debt secured by the investor's principal residence up to the estimated fair market value of the home, except
that any mortgage debt incurred by the investor within 60 days prior to the date of the transaction shall not be excluded from the determination
of the investor's net worth unless the mortgage debt was incurred to acquire the residence. For transactions covered by this rule,
the broker-dealer must make a special suitability determination for the purchaser and must have received the purchaser's written
consent to the transaction prior to sale. This means that if we are unable maintain the listing of AgeX common stock on a national securities
exchange, the ability of stockholders to sell their AgeX common stock in the secondary market could be adversely affected.

 If
a transaction involving a penny stock is not exempt from the SEC's rule, a broker-dealer must deliver a disclosure schedule relating
to the penny stock market to each investor prior to a transaction. The broker-dealer also must disclose the commissions payable to both
the broker-dealer and its registered representative, current quotations for the penny stock, and, if the broker-dealer is the sole market-maker,
the broker-dealer must disclose this fact and the broker-dealer's presumed control over the market. Finally, monthly statements
must be sent disclosing recent price information for the penny stock held in the customer's account and information on the limited
market in penny stocks.

 Risks
Related to Our Planned Restructuring

 As
part of our corporate restructuring plans, we are pursuing the Merger with Serina through which AgeX would be able to enter the field
of drug delivery polymer technology, but there is no assurance that the Merger will be consummated. Failure to complete, or delays in
completing, the Merger with Serina could materially and adversely affect our results of operations, business, financial condition or
stock price.

 We
have been formulating corporate restructuring plans that include the Merger through which AgeX would be able to enter the field of drug
delivery polymer technology. If the Merger is completed, the Combined Company will primarily focus on developing Serina's product
candidates and it is anticipated that the Combined Company will not continue to develop our product candidates, other than potentially
the development program of NeuroAirmid. Any failure to satisfy a required condition to closing may prevent, delay or otherwise materially
and adversely affect the completion of the Merger, which could materially and adversely affect AgeX's ability to enter the field
of drug delivery polymer technology and could materially and adversely affect AgeX's results of operations, business, financial
condition or stock price. AgeX cannot predict with certainty whether or when any of the required closing conditions will be satisfied
and whether AgeX will be able to successfully consummate the Merger as currently contemplated under the Merger Agreement or at all. Accordingly,
there is no assurance that the Merger will be consummated.

 AgeX's
efforts to complete the Merger could cause substantial disruptions in, and create uncertainty surrounding, AgeX's business, which
may materially adversely affect AgeX's results of operations and business. Uncertainty as to whether the Merger will be completed
may affect AgeX's ability to retain and motivate existing employees or recruit prospective employees if vacancies in staffing need
to be filled. Employee retention may be particularly challenging while the Merger is pending because employees may experience uncertainty
about their roles following the transaction. A substantial amount of AgeX's management's and employees' attention is
being directed toward the completion of the transaction and thus is being diverted from AgeX's day-to-day operations.

 Risks
related to the failure to consummate, or delay in consummating, the Merger include, but are not limited to, the following:

 AgeX
 would not realize any or all of the potential benefits of the Merger, which could have a negative effect on AgeX's results
 of operations, business, financial condition or stock price;

 under
 some circumstances, AgeX may be required to pay a termination fee to Serina of $1,000,000 or expense reimbursement of up to $1,000,000,
 but not both;

 AgeX
 would remain liable for significant transaction costs, including legal, accounting and other costs relating to the merger regardless
 of whether the Merger is consummated;

 the
 trading price of AgeX's common stock may decline to the extent that the current market price for AgeX's stock reflects
 a market assumption that the Merger will be completed;

 the
 attention of AgeX's management and employees may have been diverted to the Merger rather than to AgeX's operations and
 the pursuit of other opportunities that could have been beneficial to AgeX;

 AgeX
 could be subject to litigation related to any failure to complete the Merger;

 AgeX
 could potentially lose key personnel during the pendency of the Merger as employees may experience uncertainty about their future
 roles with AgeX following completion of the Merger and seek employment opportunities elsewhere; and

 under
 the Merger Agreement, AgeX is subject to certain customary restrictions on the conduct of AgeX's business prior to completing
 the Merger, which restrictions could adversely affect AgeX's ability to conduct AgeX's business as AgeX otherwise would
 have done if AgeX was not subject to these restrictions.

 The
occurrence of any of these events individually or in combination could materially and adversely affect AgeX's results of operations,
business, financial condition and stock price.

 If
the Merger is not approved or does not occur, we may not be successful in the execution of our current business strategies or identifying
and implementing any strategic alternatives with respect to our assets and development programs, and any future strategic alternatives
could have negative consequences.

 If
the Merger does not occur, we expect to continue to execute on our current business strategies while seeking out and evaluating potential
strategic alternatives with respect to our assets and development programs, which may include a merger, business combination, investment
into AgeX, sale or other disposition of assets or other strategic transaction. In such case, we may not be successful in executing such
strategies or identifying or implementing any such strategic alternatives, and there is a risk that Juvenescence may decide to stop funding
our operations, which would likely result in our delisting and dissolution.

 In
addition, the process of seeking out and evaluating a potential strategic alternative with respect to our assets and development programs
is costly, time-consuming and complex, and we have incurred, and may in the future incur, significant costs related to the Merger and
our other ongoing restructuring plans, such as legal and accounting fees and expenses and other related charges. We may also incur additional
unanticipated expenses in connection with this process. A considerable portion of these costs will be incurred regardless of whether
any such course of action is implemented or transaction is completed, decreasing the remaining cash available for use in our business.

 The
development and any potential commercialization of our product candidates will require substantial additional cash to fund the costs
associated with conducting the necessary preclinical and clinical testing and obtaining regulatory approval. Consequently, any potential
counterparty in a strategic transaction involving AgeX may be reluctant to spend additional resources required to pursue development
of AgeX's product candidates and may attribute little or no value to AgeX product assets in such a transaction.

 There
can be no assurance that any particular course of action, business arrangement or transaction, or series of transactions, will be pursued,
successfully consummated, lead to increased stockholder value, or achieve the anticipated results.

 Risks
Related to Our Relationship with Juvenescence

 Conflicts
of interest may arise from our relationship with Juvenescence, which owns a significant percentage of AgeX common stock and is a significant
creditor and will be able to substantially influence us and exert control over matters subject to stockholder approval.

 As
of March 5, 2024, Juvenescence beneficially owned approximately 81.1% of the outstanding shares of AgeX common stock, as Juvenescence
indicated in its amendment of the Schedule 13D filed with the SEC on March 7, 2024, include both outstanding shares owned and shares
that may be acquired upon the exercise of certain warrants and conversion of convertible debt. A member of the AgeX Board is also the
Executive Chairman and Co-Founder of Juvenescence, and based on Juvenescence's ownership of shares of AgeX common stock, if the
Merger is not consummated, Juvenescence will continue to substantially influence us and exert control over matters subject to stockholder
approval, the elections of directors, approval of our equity incentive plans, amendments to our organizational documents, or approval
of any merger, amalgamation, sale of assets or other major corporate transaction. Furthermore, because Juvenescence holds more than 50%
of the outstanding AgeX common stock, AgeX qualifies as a "controlled company" as defined by the NYSE American Company Guide.
Being a "controlled company" entitles AgeX to exempt itself from the requirement that a majority of its directors be "independent"
directors as defined in the NYSE American Company Guide, and that the Compensation Committee and the Nominating & Corporate Governance
Committee be comprised entirely of independent directors.

 On
November 9, 2023, we entered into an amendment of the 2022 Secured Note to increase the amount of the line of credit available to AgeX
from Juvenescence by $4,400,000, which has already been drawn down in full. As of March 20, 2024, the outstanding principal
balance plus accrued loan origination fees of the 2022 Secured Note was approximately $7,400,000. Juvenescence also has controlling
stakes and minority investments in several other companies engaged in various aspects of the aging industry, which companies may propose
collaborations with AgeX.

 Juvenescence's
interests may not always coincide with our corporate interests or the interests of other stockholders, and it may exercise its voting
and other rights, including rights as a creditor, in a manner with which other stockholders may not agree or that may not be in the best
interests of AgeX or stockholders other than Juvenescence. So long as Juvenescence continues to own a significant amount of our equity
and remains a significant creditor, it will continue to be able to strongly influence and effectively control our decisions. While the
directors elected by Juvenescence will be obligated to act in accordance with their fiduciary duty, they may have equity or other interests
in Juvenescence and, accordingly, their interests may be aligned with Juvenescence's interests, which may not always coincide with
our corporate interests or the interests of our other stockholders.

 Risks
Related to Our Business Operations

 Due
to our limited financial resources, we have reduced our staffing, eliminated our research laboratory facilities, and eliminated in-house
research and product development work. We will seek opportunities to outsource or license product development and commercialization but
there is no assurance that we will be able to do so successfully.

April 2020, we implemented a plan to reduce spending on employee salaries and consulting fees that resulted in large staff reductions,
including the elimination of most of our research personnel and certain management and administrative personnel. We then subleased most
of our former laboratory facility space and we did not renew the laboratory facility lease, or lease other laboratory facility space,
after our lease expired at the end of 2020. As a result, we do not have a research laboratory facility or a research staff, and we have
curtailed development of our product candidates and technologies except for certain research and development work that is being conducted
under sponsored research agreements with certain universities and a limited amount of work contracted out to third-party service providers.
We also may license technologies or product development to, or enter into collaborative arrangements with, other companies in the cell
therapy or biopharma industry to conduct research and development, manufacturing, and marketing for AgeX for particular product candidates,
but there is no assurance that we will be able to enter into any such agreements on terms acceptable to us.

 We
may expend our limited resources to pursue one or more particular product candidates or indications and fail to pursue product candidates
or indications that may be more profitable or for which there is a greater likelihood of success.

we have limited financial and managerial resources, we may focus on research programs and product candidates that we identify for specific
indications and we may seek to develop those product candidates through out-sourcing or out-licensing to third parties if we are able
to make such arrangements. As a result, we may forego or delay pursuit of opportunities with other product candidates or for other indications
that may later prove to have greater commercial potential. Our resource allocation decisions may cause us to fail to timely capitalize
on viable commercial products or profitable market opportunities. Our spending on current and future research and development programs
and product candidates for specific indications may not yield any commercially viable products. If we do not accurately evaluate the
commercial potential or target market for a particular product candidate, we may relinquish valuable rights to that product candidate
through collaboration, licensing or other royalty arrangements in cases in which it would have been more advantageous for us to retain
sole development and commercialization rights to such product candidate.

 We
have not tested any of our product candidates in clinical trials. Success in early development and preclinical studies or clinical trials
may not be indicative of results obtained in later preclinical studies and clinical trials.

 Our
product candidates have never been evaluated in human clinical trials, and we may experience unexpected or adverse results in the future
if any human clinical trials of any of our product candidates are conducted. Typically, it takes about six to ten years to develop a
new drug from the time it enters Phase 1 clinical trials to when it is approved for treating patients, but in many cases it may take
longer, and the costs of advancing product candidates through clinical trials will be substantial and will tend to increase significantly
with each successive clinical trial phase.

 Adequate
and well-controlled clinical trials will need to demonstrate that our product candidates are safe and effective, with a favorable benefit-risk
profile, for use in their target indications before regulatory approvals can be sought for their commercial sale. Any positive results
that may be observed for product candidates in preclinical animal models may not be predictive of future clinical trials in humans. Our
product candidates may also fail to show the desired safety and efficacy in later stages of clinical development even if they successfully
advance through initial clinical trials. Further, some or all of our cell-based therapies under development may require the genetic modification
of the pluripotent master cell banks such that the resulting cells can escape immune rejection by the intended patient. There is no certainty
that a genetic modification will provide a long-term solution to transplant rejection, or that the modified cells will not cause unanticipated
health risks to the patient that could delay or even halt the development of the products.

 Many
companies in the biotechnology industry have suffered significant setbacks in late-stage clinical trials after achieving positive results
in early-stage development and there is a high failure rate for product candidates proceeding through clinical trials. Data obtained
from preclinical and clinical activities are subject to varying interpretations, which may delay, limit or prevent regulatory approval.
Even if a clinical trial demonstrates statistical significance, regulatory agencies may not accept the use of the historical control.
Regulatory delays or rejections may be encountered as a result of many factors, including changes in regulatory policy during the period
of product development. We cannot be certain that any clinical trials and applications for marketing approval will not face similar setbacks.

 The
development and commercialization of new drugs to address obesity and type 2 diabetes may substantially limit or eliminate the prospects
for AgeX's prospective AGEX-BAT1 product.

 A
number of new GLP-1 receptor agonist drugs, including Mounjaro, Ozempic, Rybelsus, and Trulicity for treating type 2 diabetes, and Wegovy
and Zepbound for weight management, have entered the market. Ozempic is also being used off label for weight loss. The attention and
acceptance that these new drugs have attained in the medical field for the treatment of type 2 diabetes and chronic weight management
may substantially limit or eliminate the prospects for developing and commercializing any product based on AGEX-BAT1, brown adipose tissue,
for those uses. Although the GLP-1 receptor agonist drugs may in certain patients be contraindicated, carry unacceptable medical risks,
lead to intolerable side effects, or may not be satisfactorily effective, it is not clear whether those patients would constitute a large
enough market for an alternative therapy to warrant the time and expense of developing AGEX-BAT1 for the uses addressed by the products
currently on the market. Further, it is likely that the administration of a AGEX-BAT1 cell therapy product would entail a surgical implant
procedure which would be expensive and would pose risks to the patient related to the surgical procedure that are not faced by users
of the injectable or pill GLP-1 receptor agonist drugs currently on the market.

 Our
choice of product candidates and our development plans for our product candidates are subject to change based on a variety of factors,
and if we abandon development of a product candidate we may not be able to develop or acquire a replacement product candidate.

 We
may determine to abandon the development of one or more of our product candidates, or we may change the prioritization of the development
of certain product candidates, or we may select or acquire and prioritize the development of new product candidates. Our choice and prioritization
of product candidates for development will be influenced by a variety of factors, including but not limited to:

 the
 amount of capital that we will have for our development programs and our projected costs for those programs;

 ability
 to enter into licensing or collaborative arrangements with other biotechnology or biopharma companies or universities with their
 own laboratory facilities and research staffs to conduct research and development of one or more product candidates;

 competitors
 may develop alternatives that render our potential product candidates obsolete or less attractive;

 potential
 product candidates we develop may nevertheless be covered by third parties' patents or other exclusive rights;

 potential
 product candidates may not be effective in treating their targeted diseases;

 potential
 product candidates may, on further study, be shown to have harmful side effects, toxicities or other characteristics that indicate
 that they are unlikely to be products that will receive marketing approval and achieve market acceptance;

 our
 analysis of market demand and market prices for the products we plan to develop could lead us to conclude that market conditions
 are not favorable for receiving an adequate return on our investment in product development and commercialization;

 a
 potential product candidate may not be capable of being produced in commercial quantities at an acceptable cost, or at all; or

 the
 regulatory pathway for a potential product candidate is too complex and difficult to navigate successfully or economically.

 We
may determine to expand our organization and obtain laboratory facilities if we are able to raise sufficient capital to do so, and we
may experience difficulties in managing this growth, which could disrupt our operations.

 As
of December 31, 2023, we had eight employees. If we are able to obtain sufficient capital and determine to reinstitute our internal research
and development efforts, we may have difficulty locating, leasing, and equipping a new laboratory facility and identifying, hiring and
integrating new scientific and laboratory personnel. Many of the biotechnology companies that we compete against for qualified personnel
and consultants have greater financial and other resources, different risk profiles and a longer history in the industry than we do and
are better positioned to attract and retain personnel and consultants. If we are unable to continue to attract and retain high-quality
personnel and consultants, the rate and success at which we can discover and develop product candidates and operate our business will
be limited.

 Future
growth would impose significant additional responsibilities on our management, including the need to identify, recruit, maintain, motivate
and integrate additional employees, consultants and contractors. Also, our management may need to divert a disproportionate amount of
its attention away from our day-to-day activities and devote a substantial amount of time to managing these growth activities. We may
not be able to effectively manage the expansion of our operations, which may result in weaknesses in our infrastructure, give rise to
operational mistakes, loss of business opportunities, loss of employees and reduced productivity among remaining employees. Any growth
of administrative resources could require significant capital expenditures and may divert financial resources from other projects, such
as the development of product candidates. If our management is unable to effectively manage our growth, our expenses may increase more
than expected, our ability to generate and/or grow revenues could be reduced, and we may not be able to implement our business strategy.
Our future financial performance and our ability to commercialize our product candidates and compete effectively will depend, in part,
on our ability to effectively manage any future growth.

 The
commercial success of any of our current or future product candidates will depend upon the degree of market acceptance by physicians,
patients, third-party payors, and others in the medical community.

 Even
with approvals from the FDA and comparable foreign regulatory authorities, the commercial success of our products will depend in part
on the health care providers, patients, and third-party payors accepting our product candidates as medically useful, cost-effective,
and safe. Any product that we bring to the market may not gain market acceptance by physicians, patients, third-party payors and other
health care providers. The clinical development, commercialization, and marketing of cell therapies are at an early-stage, substantially
research-oriented, and financially speculative. To date, very few companies have been successful in their efforts to develop and commercialize
cell therapies. In general, cell therapies may be susceptible to various risks, including undesirable and unintended side effects, unintended
immune system responses, inadequate therapeutic efficacy, potentially prohibitive costs or other characteristics that may prevent or
limit their approval or commercial use. Furthermore, the number of people who may use cell- or tissue-based therapies is difficult to
forecast with accuracy. Our future success is dependent on the establishment of a large global market for cell therapies and our ability
to capture a share of this market with our product candidates.

 Even
if we, a collaborator, or a licensee of our technology successfully develop and obtain regulatory approval for our product candidates,
the market may not understand or accept them. Our product candidates represent novel treatments and are expected to compete with a number
of more conventional products and therapies manufactured and marketed by others, including major pharmaceutical and biotechnology companies.
The degree of market acceptance of any of our products will depend on a number of factors, including without limitation:

 the
 efficacy of the product as demonstrated in clinical studies and potential advantages over competing treatments;

 the
 prevalence and severity of the disease and any side effects;

 the
 clinical indications for which approval is granted, including any limitations or warnings contained in a product's approved
 labeling;

 the
 convenience and ease of administration;

 the
 cost of treatment, particular as additive to existing treatments;

 the
 willingness of the patients and physicians to accept and use these therapies and the perception of efficacy and safety of our approved
 products by such parties;

 the
 marketing, sales and distribution support for the products;

 the
 publicity and ethical, social and legal concerns regarding the use of embryonic stem cells for our products or competing products
 and treatments;

 government
 regulations restricting or prohibiting our research or manufacturing processes for stem cells due to ethical, social and legal concerns
 regarding their use in medical research and treatment; and

 the
 pricing and availability of third-party insurance coverage and reimbursement.

 Even
if a product displays a favorable efficacy and safety profile upon approval, market acceptance of the product will initially remain uncertain.
Efforts to educate the medical community and third-party payors on the benefits of the products may require significant investment and
resources and may never be successful. If our products fail to achieve an adequate level of acceptance by physicians, patients, third-party
payors, and other health care providers, we will not be able to generate sufficient revenue to become or remain profitable.

 If
the market opportunities for our product candidates are smaller than we believe they are, we may not meet our revenue expectations and,
even assuming approval of a product candidate, our business may suffer.

 Our
projections of the number of potential users of our product candidates in the markets we are attempting to address are based on our beliefs
and estimates and include several key assumptions based on our industry knowledge, industry publications, third-party research reports
and other surveys. You should bear in mind the following:

 Our
 estimates have been derived from a variety of sources, including publications and scientific literature or market research estimating
 the total number of patients and currently approved or used therapies, as well as certain assumptions regarding the potential size
 of the market assuming broad regulatory approval or potential usage by physicians beyond the approved label, any of which may prove
 to be incorrect.

 The
 scope of approval and potential use may be significantly narrower, and the number of patients may turn out to be lower than expected.

 Competitive
 products or approaches may be approved or come into use by medical providers and the potentially addressable patient population for
 each of our product candidates may be limited or may not be amenable to treatment with our product candidates, and new patients may
 become increasingly difficult to identify or gain access to, any which could adversely affect our results of operations and our business.

 If
the actual market for any of our product candidates is smaller than we expect, our revenue may be limited and it may be more difficult
for us to achieve or maintain profitability.

 We
will face risks related to the manufacture of medical products for any product candidates that we develop.

 The
manufacture of medical products, and in particular biologics, is complex and requires significant expertise and capital investment, including
the development of advanced manufacturing techniques and process controls, none of which we presently have. Unless we are able to raise
the capital required to construct our own manufacturing facilities and are able to develop the expertise to manage and operate a manufacturing
facility of our own, which we do not expect to undertake, we would need to rely on third-party manufacturers to manufacture any products
that we develop. There is no assurance that we will be able to identify manufacturers on acceptable terms or at all. Regardless of whether
we do our own manufacturing or rely on third parties to manufacture products for us, we will face all risks related to the manufacture
of therapeutic products for use in medicine including the following risks:

 We
 or any third-party manufacturers might be unable to timely formulate and manufacture our products or produce the quantity and quality
 required to meet our clinical and commercial needs, if any.

 We
 or any third-party manufacturers may not be able to execute our manufacturing procedures appropriately.

 Any
 third-party manufacturers we engage may not perform as agreed or may not remain in the contract manufacturing business for the time
 required to supply our clinical trials or to successfully produce, store and distribute our products on a commercial scale.

 We
 or any third-party manufacturers will be subject to ongoing periodic unannounced inspection by the FDA, and corresponding state agencies
 to ensure strict compliance with current good manufacturing practices (cGMP) and other government regulations and corresponding foreign
 standards. We will not have control over third-party manufacturers' compliance with applicable regulations and standards.

 We
 may not own, or may have to share, the intellectual property rights to any improvements made by our third-party manufacturers in
 the manufacturing process for our product candidates.

 Third-party
 manufacturers could breach or terminate their agreements with us.

 We
 or third-party manufacturers may experience manufacturing difficulties due to resource constraints or as a result of labor disputes
 or unstable political environments.

 In
addition, we may rely on third parties to perform release testing on our product candidates prior to delivery to patients. If these tests
are not appropriately conducted and test data are not reliable, patients could be put at risk of serious harm which could result in product
liability suits.

 If
we or any third-party manufacturers that we may engage were to encounter any of these difficulties, our ability to provide our product
candidates to patients in clinical trials or to the medical marketplace would be jeopardized. Any delay or interruption in the supply
of clinical trial supplies could delay the completion of clinical trials, increase the costs associated with maintaining clinical trial
programs and, depending upon the period of delay, could require us to either commence new clinical trials at additional expense or terminate
clinical trials completely.

 The
regulatory authorities also may, at any time following approval of a product for sale, audit our manufacturing facilities or those of
our third-party contractors. If any such inspection or audit identifies a failure to comply with applicable regulations or if a violation
of our product specifications or applicable regulations occurs independent of such an inspection or audit, we or the relevant regulatory
authority may require remedial measures that may be costly and/or time-consuming for us or a third party to implement and that may include
the temporary or permanent suspension of a clinical study or commercial sales or the temporary or permanent closure of a facility. Any
such remedial measures imposed upon us or third parties with whom we contract could materially harm our business.

 Additionally,
if supply from one approved manufacturer is interrupted, there could be a significant disruption in commercial supply. The regulatory
agencies may also require additional studies if a new manufacturer is relied upon for commercial production. Switching manufacturers
may involve substantial costs and is likely to result in a delay in our desired clinical and commercial timelines.

 Further,
our product candidates are manufactured by starting with established master cell banks of human embryonic cells and other cells that
are cryopreserved. We will be required to expand the numbers of the pluripotent stem cell master cell banks for future use, as well as
produce working cell banks from which the product will be manufactured for clinical trials, produce the relevant product under cGMP conditions,
expand the number of relevant cells and cryopreserve them under cGMP conditions. We may not be able to expand the numbers of the pluripotent
stem cell master cell banks to provide sufficient cells for clinical trial or for commercial scale production. We may not be able to
manufacture product that meets release criteria due to sterility, identity or potency issues. We may not have access or be able to make
the reagents necessary to manufacture the cells and we may not have access to adequate supply channels to transport and distribute the
products. There are also risks that the cells may be destroyed by interruption in their cryopreservation by means of natural disasters
such as earthquakes, power outages, or other unexpected events, or the cells may be determined to be unacceptable as a source of human
cellular therapies for reasons we cannot envision. We cannot assure you that any stability or other issues relating to the manufacture
of any of our product candidates or products will not occur in the future. If any of our master cell banks are lost or destroyed, including
due to systems failure in the cryopreservation processes, our planned clinical trials would be severely delayed, and we would incur significant
costs associated with obtaining new supply of cell banks. Accordingly, failures or difficulties faced at any level of our supply chain
could adversely affect our business and delay or impede the development and commercialization of any of our product candidates or products
and could have an adverse effect on our business, prospects, financial condition and results of operations.

 Any
therapies that we may develop may compete with other product candidates and products for access to manufacturing facilities. There are
a limited number of manufacturers that operate under cGMP regulations and that might be capable of manufacturing cell-based products
for us. Any performance failure on the part of our existing or future manufacturers could delay clinical development or marketing approval.

 Each
of these risks could delay our clinical trials, any approval of our product candidates by the FDA, or the commercialization of our product
candidates, and could result in higher costs or deprive us of potential product revenue.

 Any
cell-based products that receive regulatory approval may be difficult and expensive to manufacture on a commercial scale.

 Pluripotent
stem cell and progenitor cell derived therapeutic cells have only been produced on a small scale and not in quantities and at levels
of purity and viability that will be needed for wide scale commercialization. If we are successful in developing products that consist
of cells or compounds derived from pluripotent stem cells or progenitor cells, we will need to develop facilities, processes, and technology
for the commercial production of those products. Pluripotent stem cell or progenitor cell based products are likely to be more expensive
to manufacture on a commercial scale than most other drugs on the market today. The higher cost of manufacturing a product will require
that we charge our customers a higher price for the product in order to cover our costs and earn a profit. If the price of our products
is too high, hospitals and physicians may be reluctant to purchase our products and we may not be able to sell our products in sufficient
volumes to recover our costs or to earn a profit.

 If
we fail to meet our obligations under license agreements, we may lose our rights to key technologies on which our business depends.

 Our
business will depend on several critical technologies that we have licensed or sublicensed from Lineage Cell Therapeutics, Inc. (Lineage)
or certain Lineage subsidiaries. The license and sublicense agreements impose obligations on us, including payment obligations and obligations
to pursue development and commercialization of products and technologies under the licensed patents or technology. If the licensor or
sublicensor believes that we have failed to meet our obligations under a license or sublicense agreement, they could seek to limit or
terminate our license rights, which could lead to costly and time-consuming litigation and, potentially, our loss of the licensed rights.
During the period of any such litigation our ability to carry out the development and commercialization of potential new products or
technologies, and our ability to raise any capital that we might then need, could be significantly and negatively affected. If our license
rights were restricted or ultimately lost, we would not be able to continue to use the licensed or sublicensed technology in our business.

 Our
future success depends on our ability to retain our key personnel and to attract, retain and motivate qualified personnel.

 Our
industry has experienced a high rate of turnover of management personnel in recent years. We are highly dependent on our executive officers,
including our Interim Chief Executive Officer and our Chief Financial Officer. Although we have a consulting agreement with our Interim
Chief Executive Officer and an employment agreement with our Chief Financial Officer, these agreements do not prevent them from terminating
their consulting arrangement or employment with us at any time. In addition, because we will rely on Juvenescence to provide the services
of certain administrative and management personnel, we will not have the benefit of the full time and effort of those Juvenescence employees
in the management and development of our business.

 If
we lose one or more of our executive officers or key employees, our ability to implement the Merger and the other transactions contemplated
by the Merger Agreement or, if the Merger is not completed, our current business strategies successfully could be seriously harmed. Furthermore,
replacing executive officers and key employees may be difficult, in particular during the pendency of the Merger, and may take an extended
period of time because of the uncertainty about such persons roles following the Merger and the limited number of individuals in our
industry with the breadth of skills and experience required to develop, gain regulatory approval of and commercialize product candidates
successfully. Competition to hire from this limited pool is intense, and we may be unable to hire, train, retain or motivate these additional
key personnel on acceptable terms given the competition among numerous pharmaceutical and biotechnology companies for similar personnel.
We also will experience competition for the hiring of scientific and clinical personnel from universities and research institutions.
In addition, we will rely on consultants and advisors, including scientific and clinical advisors, to assist us in formulating our research
and development and commercialization strategy. Our consultants and advisors may be engaged by entities other than us and may have commitments
under consulting or advisory contracts with other entities that may limit their availability to us. If we are unable to continue to attract
and retain high quality personnel, our ability to implement the Merger and the other transactions contemplated by the Merger Agreement
or, if the Merger is not completed, to continue to execute on our current business strategies while seeking out and evaluating potential
strategic alternatives with respect to our assets and development programs will be limited.

 Our
business and operations could suffer in the event of system failures.

 Despite
the implementation of security measures, our internal computer systems and those of our contractors and consultants are vulnerable to
damage from computer viruses, unauthorized access, natural disasters including earthquakes and tsunamis, terrorism, war, and telecommunication
and electrical failures. A loss of or damage to our data, a disruption in access to our data, or inappropriate disclosure of confidential
or proprietary information, could disrupt our operations, delay or otherwise adversely affect the development of our product candidates,
significantly increase our costs, or result in delays in any future regulatory filings we may make.

 In
addition, our product candidates are manufactured using cells that are stored in a cryopreserved master cell bank. While we believe we
have adequate backup should any cell bank be lost in a catastrophic event, it is possible that we or our third-party suppliers and manufacturers
could lose multiple cell banks and have our manufacturing severely impacted by the need to replace the cell banks. We cannot assure you
that any stability or other issues relating to the manufacture of any of our product candidates or products will not occur in the future.
Any delay or interruption in the supply of clinical trial supplies could delay the completion of planned clinical trials, increase the
costs associated with maintaining clinical trial programs and, depending upon the period of delay, require us to commence new clinical
trials at additional expense or terminate clinical trials completely. Any adverse developments affecting clinical or commercial manufacturing
of our product candidates or products may result in shipment delays, inventory shortages, lot failures, product withdrawals or recalls
or other interruptions in the supply of our product candidates or products. Accordingly, failures or difficulties faced at any level
of our supply chain could adversely affect our business and delay or impede the development and commercialization of any of our product
candidates or products and could have an adverse effect on our business, prospects, financial condition and results of operations.

 Security
breaches and other disruptions could compromise our information and expose us to liability, and could cause our business and reputation
to suffer.

 In
the ordinary course of business, we collect and store sensitive data, including intellectual property, our proprietary business information
and that of the licensors and licensees of the patents and other intellectual property we use, and personally identifiable information
of employees and consultants. The secure processing, maintenance, and transmission of this information is critical to our operations
and business strategy. Despite our security measures, our information technology and infrastructure may be vulnerable to attacks by hackers
or breached due to employee error, malfeasance, or other disruptions. Any such breach could compromise our networks and the information
stored there could be accessed, publicly disclosed, lost, or stolen. Any such access, disclosure, theft, or other loss of information
could result in legal claims or proceedings or liability under laws that protect the privacy of personal information, and could disrupt
our operations and damage our reputation. Even if we do not incur an interruption of or our operations, fines, penalties, or financial
liability to third parties from a security breach, we could suffer a loss of confidence in our services, which could adversely affect
our business and competitive position.

 Failure
of our internal control over financial reporting could harm our business and financial results.

 Our
management is responsible for establishing and maintaining adequate internal control over financial reporting. Internal control over
financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting for external
purposes in accordance with U.S. GAAP. Internal control over financial reporting includes maintaining records that in reasonable detail
accurately and fairly reflect our transactions; providing reasonable assurance that transactions are recorded as necessary for preparation
of our consolidated financial statements; providing reasonable assurance that receipts and expenditures of our assets are made in accordance
with management authorization; and providing reasonable assurance that unauthorized acquisition, use, or disposition of our assets that
could have a material effect on the consolidated financial statements would be prevented or detected on a timely basis. Because of its
inherent limitations, internal control over financial reporting is not intended to provide absolute assurance that a misstatement of
our consolidated financial statements would be prevented or detected. Because we are an emerging growth company and a smaller reporting
issuer, we are exempt from the requirement of having our internal controls over financial reporting audited by our independent registered
public accountants, which means that material weaknesses or significant deficiencies in our internal controls that might be detected
by an audit may not be detected and remedied. If we are successful in developing new medical products and technologies, the commercialization
of those products and technologies will place significant additional pressure on our system of internal control over financial reporting.
Any failure to maintain an effective system of internal control over financial reporting could limit our ability to report our financial
results accurately and timely or to detect and prevent fraud. Our accounting and other management systems and resources may not be adequately
prepared to meet the financial reporting and other requirements to which we will be subject, and failure to achieve and maintain effective
internal controls could have a material adverse effect on our business.

 We
are subject to laws and regulations governing corruption, which will require us to develop, maintain, and implement costly compliance
programs.

 We
must comply with a wide range of laws and regulations to prevent corruption, bribery, and other unethical business practices, including
the Foreign Corrupt Practices Act (FCPA), anti-bribery and anti-corruption laws in other countries. The creation and implementation of
international business practices compliance programs is costly and such programs are difficult to enforce, particularly where reliance
on third parties is required.

 Anti-bribery
laws prohibit us, our employees, and some of our agents or representatives from offering or providing any personal benefit to covered
government officials to influence their performance of their duties or induce them to serve interests other than the missions of the
public organizations in which they serve. Certain commercial bribery rules also prohibit offering or providing any personal benefit to
employees and representatives of commercial companies to influence their performance of their duties or induce them to serve interests
other than their employers. The FCPA also obligates companies whose securities are listed in the U.S. to comply with certain accounting
provisions requiring us to maintain books and records that accurately and fairly reflect all transactions of the corporation, including
international subsidiaries, and devise and maintain an adequate system of internal accounting controls for international operations.
The anti-bribery provisions of the FCPA are enforced primarily by the United States Department of Justice. The SEC is involved with enforcement
of the books and records provisions of the FCPA.

 Compliance
with these anti-bribery laws is expensive and difficult, particularly in countries in which corruption is a recognized problem. In addition,
the anti-bribery laws present particular challenges in the medical industry because in many countries including China, hospitals are
state-owned or operated by the government, and doctors and other hospital employees are considered foreign government officials. Furthermore,
in certain countries (China in particular), hospitals and clinics are permitted to sell pharmaceuticals to their patients and are primary
or significant distributors of pharmaceuticals. Certain payments to hospitals in connection with clinical studies, procurement of pharmaceuticals
and other work have been deemed to be improper payments to government officials that have led to vigorous anti-bribery law enforcement
actions and heavy fines in multiple jurisdictions, particularly in the U.S. and China.

 It
is not always possible to identify and deter violations, and the precautions we take to detect and prevent this activity may not be effective
in controlling unknown or unmanaged risks or losses or in protecting us from governmental investigations or other actions or lawsuits
stemming from a failure to be in compliance with such laws or regulations.

 In
the medical industry, corrupt practices include, among others, acceptance of kickbacks, bribes or other illegal gains or benefits by
the hospitals and medical practitioners from manufacturers of pharmaceutical or other products, distributors or their third party agents
in connection with the prescription of certain pharmaceuticals or sale of products. If our employees, affiliates, distributors or third
party marketing firms violate these laws or otherwise engage in illegal practices with respect to their sales or marketing of our products
or other activities involving our products, we could be required to pay damages or heavy fines by multiple jurisdictions where we operate,
which could materially and adversely affect our financial condition and results of operations. There have been recent occurrences in
which certain hospitals have denied access to sales representatives from pharmaceutical companies because the hospitals wanted to avoid
the perception of corruption. If this attitude becomes widespread among our potential customers, our ability to promote our products
to hospitals may be adversely affected.

 If
we and our subsidiaries expand operations internationally, we will need to increase the scope of our compliance programs to address the
risks relating to the potential for violations of the FCPA and other anti-bribery and anti-corruption laws. Our compliance programs will
need to include policies addressing not only the FCPA, but also the provisions of a variety of anti-bribery and anti-corruption laws
in multiple foreign jurisdictions, provisions relating to books and records that apply to us as a public company, and include effective
training for our personnel throughout our organization. The creation and implementation of anti-corruption compliance programs is costly
and such programs are difficult to enforce, particularly where reliance on third parties is required. Violation of the FCPA and other
anti-corruption laws can result in significant administrative and criminal penalties for us and our employees, including substantial
fines, suspension or debarment from government contracting, prison sentences, or even the death penalty in extremely serious cases in
certain countries. The SEC also may suspend or bar us from trading securities on U.S. exchanges for violation of the FCPA's accounting
provisions. Even if we are not ultimately punished by government authorities, the costs of investigation and review, distraction of our
personnel, legal defense costs, and harm to our reputation could be substantial and could limit our profitability or our ability to develop
or commercialize our product candidates. In addition, if any of our competitors are not subject to the FCPA, they may engage in practices
that will lead to their receipt of preferential treatment from foreign hospitals and enable them to secure business from foreign hospitals
in ways that are unavailable to us.

 Risks
Related to Our Industry

 We
face significant competition in an environment of rapid technological change and the possibility that our competitors may achieve regulatory
approval before us or develop therapies that are more advanced or effective than ours, which may harm our business and financial condition,
and our ability to successfully market or commercialize our product candidates.

 The
biotechnology and pharmaceutical industries are characterized by rapidly changing technologies, competition and a strong emphasis on
intellectual property. We may face competition from other companies focused on therapeutics for age-related disease, which is a highly
competitive environment. There are numerous biotechnology companies developing therapeutics for human aging, with each company often
focusing on a specific molecular pathway within cells. For example, ResTORbio, Inc. is developing modulators of the mechanistic target
of rapamycin (mTOR) pathway to treat immunological and cardiovascular disorders. Calico Life Sciences LLC is a Google-founded research
and development company aimed at identifying molecular pathways that control animal lifespan and translating these insights into novel
therapeutics designed to increase human healthspan. Unity Biotechnology, Inc. focuses on cellular senescence, in particular, the use
of agents that can target senescent cells for selective ablation (senolysis). Unity's stated targeted age-related diseases include
osteoarthritis as well as other ophthalmological and pulmonary diseases. Our therapeutic products in development are likely to face competition
from a large number of companies and technological strategies including therapeutics intended to address our lead indications. See " Business—Competition."

 We
may also face competition from large and specialty pharmaceutical and biotechnology companies, academic research institutions, government
agencies and public and private research institutions. Many of our current or potential competitors, either alone or with their collaboration
partners, have significantly greater financial resources and expertise in research and development, manufacturing, preclinical testing,
conducting clinical trials, obtaining regulatory approvals, and marketing approved products than we do. Mergers and acquisitions in the
pharmaceutical, biotechnology, and gene therapy industries may result in even more resources being concentrated among a smaller number
of our competitors. Smaller or early-stage companies may also prove to be significant competitors, particularly through collaborative
arrangements with large and established companies. These competitors also compete with us in recruiting and retaining qualified scientific
and management personnel and establishing clinical trial sites and patient registration for clinical trials, as well as in acquiring
technologies complementary to, or necessary for, our programs. Our commercial opportunity could be reduced or eliminated if our competitors
develop and commercialize products that are safer, more effective, have fewer or less severe side effects, are more convenient, or are
less expensive than any products that we may develop or that would render any products that we may develop obsolete or non-competitive.
Our competitors also may obtain FDA or other regulatory approval for their products more rapidly than we may obtain approval for ours,
which could result in our competitors establishing a strong market position before we are able to enter the market. In particular, the
Ministry of Labor Health and Welfare in Japan may grant SAKIGAKE designation to a competing product candidate, which is designed to provide
for faster review and approval for any such product candidate as compared to the conventional process. If any competing product candidate
receives SAKIGAKE designation in Japan, it may be commercialized more quickly in Japan than any of our product candidates. Additionally,
technologies developed by our competitors may render our potential product candidates uneconomic or obsolete, and we may not be successful
in marketing any product candidates we may develop against competitors.

 Any
product candidates for which we intend to seek approval as biologic products may face competition sooner than anticipated.

 The
Affordable Care Act, as amended by the Health Care and Education Reconciliation Act of 2010 (collectively, the ACA) includes a subtitle
called the Biologics Price Competition and Innovation Act of 2009, or BPCIA, which created an abbreviated approval pathway for biological
products that are biosimilar to or interchangeable with an FDA-licensed reference biological product. Under the BPCIA, an application
for a biosimilar product may not be submitted to the FDA until four years following the date that the reference product was first licensed
by the FDA. In addition, the approval of a biosimilar product may not be made effective by the FDA until 12 years from the date on which
the reference product was first licensed. During this 12-year period of exclusivity, another company may still market a competing version
of the reference product if the FDA approves a full a biologics license application (BLA) for the competing product containing the sponsor's
own preclinical data and data from adequate and well-controlled clinical trials to demonstrate the safety, purity and potency of their
product. The law is complex and is still being interpreted and implemented by the FDA. As a result, its ultimate impact, implementation,
and meaning are subject to uncertainty. While it is uncertain when such processes intended to implement BPCIA may be fully adopted by
the FDA, any such processes could have a material adverse effect on the future commercial prospects for our biological products.

 There
is a risk that any of our product candidates approved as a biological product under a BLA would not qualify for the 12-year period of
exclusivity or that this exclusivity could be shortened due to congressional action or otherwise, or that the FDA will not consider our
product candidates to be reference products for competing products, potentially creating the opportunity for generic competition sooner
than anticipated. Other aspects of the BPCIA, some of which may impact the BPCIA exclusivity provisions, have also been the subject of
recent litigation. Moreover, the extent to which a biosimilar, once approved, will be substituted for any one of our reference products
in a way that is similar to traditional generic substitution for non-biological products is not yet clear, and will depend on a number
of marketplace and regulatory factors that are still developing.

 The
regulatory approval processes of the FDA and comparable foreign authorities are lengthy, time consuming and inherently unpredictable,
and if we are ultimately unable to obtain regulatory approval for our product candidates, our business will be substantially harmed.

 The
time required to obtain approval by the FDA and comparable foreign authorities is unpredictable but typically takes many years following
the commencement of clinical trials and depends upon numerous factors, including the substantial discretion of the regulatory authorities.
In addition, approval policies, regulations, or the type and amount of clinical data necessary to gain approval may change during the
course of a product candidate's clinical development and may vary among jurisdictions. We have not obtained regulatory approval
for any product candidate and it is possible that any other product candidates we may seek to develop in the future will ever obtain
regulatory approval. Neither we nor any future collaborator or licensee is permitted to market any of our product candidates in the United
States until we receive regulatory approval of a BLA from the FDA. It is possible that the FDA may refuse to accept for substantive review
any BLAs that we submit for our product candidates or may conclude after review of our data that our application is insufficient to obtain
marketing approval of our product candidates.

 Prior
to obtaining approval to commercialize a product candidate in the United States or abroad, we or our collaborators or licensees will
need to demonstrate with substantial evidence from well-controlled clinical trials, and to the satisfaction of the FDA or foreign regulatory
agencies, that the product candidate is safe and effective for the intended uses. Results from nonclinical studies and clinical trials
can be interpreted in different ways. Even if we believe the nonclinical or clinical data for our product candidates are promising, such
data may not be sufficient to support approval by the FDA and other regulatory authorities. The FDA may also require us to conduct additional
preclinical studies or clinical trials for our product candidates either prior to or post-approval, or it may object to elements of our
clinical development program. Depending on the extent of these or any other FDA-required studies, approval of any BLA or application
that we submit may be delayed by several years or may require us to expend significantly more resources than we have available.

 Any
therapeutic products that we and our subsidiaries may develop cannot be sold until the FDA and corresponding foreign regulatory authorities
approve the products for medical use. The need to obtain regulatory approval to market a new product means that:

 Expensive
 and time-consuming clinical trials of new products will need to be conducted. The full cost of conducting and completing clinical
 trials necessary to obtain FDA and foreign regulatory approval of a new product cannot be presently determined but could exceed our
 financial resources or could discourage any future licensees or collaborators from pursuing FDA approval of our product candidates.

 Clinical
 trials and the regulatory approval process for a pharmaceutical or cell-based product can take several years to complete. As a result,
 we will face expenses and delays inherent in seeking FDA and foreign regulatory approval of new products, even if the results of
 clinical trials are favorable.

 Data
 obtained from preclinical and clinical studies is susceptible to varying interpretations and regulatory changes that could delay,
 limit, or prevent regulatory agency approvals.

 the therapeutic products we plan to develop with pluripotent stem cell technology or progenitor cell technology involve the application
 of new technologies and approaches to medicine, the FDA or foreign regulatory agencies may subject those products to additional or
 more stringent review than drugs or biologicals derived from other technologies.

 A
 product that is approved may be subject to restrictions on use.

 The
 FDA can recall or withdraw approval of a product if it deems necessary.

 We
 will face similar regulatory issues in foreign countries.

 Approval
of our product candidates may be delayed or refused for many reasons, including the following:

 The
 FDA or comparable foreign regulatory authorities may disagree with the design or implementation of the applicable clinical trial

 A
 clinical trial might not demonstrate to the satisfaction of the FDA or comparable foreign regulatory authorities that our product
 candidates are safe and effective for any of their proposed indications

 The
 results of clinical trials may not meet the level of statistical significance required by the FDA or comparable foreign regulatory
 authorities for approval

 A
 clinical trial fail to demonstrate that our product candidates' clinical and other benefits outweigh their safety risks

 The
 FDA or comparable foreign regulatory authorities may disagree with our interpretation of data from preclinical programs or clinical
 trials

 The
 data collected from clinical trials of our product candidates may not be sufficient to support the submission of a BLA or other comparable
 submission in foreign jurisdictions or to obtain regulatory approval in the United States or elsewhere

 The
 facilities of the any third-party manufacturers with which we may contract may not be adequate to support approval of our product
 candidates (for example, regulatory approval of cell- and tissue-based products require high standards of quality control)
 and

 The
 approval policies or regulations of the FDA or comparable foreign regulatory authorities may significantly change in a manner rendering
 our clinical data insufficient for approval.

 Of
the large number of potential products in development, only a small percentage successfully complete the FDA or foreign regulatory approval
processes and are commercialized. The lengthy approval process as well as the unpredictability of future clinical trial results may result
in our failing to obtain regulatory approval to market our product candidates, which would significantly harm our business, results of
operations and prospects.

 Ethical,
social and legal concerns about research regarding stem cells, could result in regulations restricting or prohibiting the processes we
may use. Federal and state agencies, congressional committees and foreign governments have expressed interest in further regulating biotechnology.
More restrictive regulations or claims that our products are unsafe or pose a hazard could prevent us from commercializing any products.
New government requirements may be established that could delay or prevent regulatory approval of our product candidates under development.
It is impossible to predict whether legislative changes will be enacted, regulations, policies or guidance changed, or interpretations
by agencies or courts changed, or what the impact of such changes, if any, may be.

 Regulatory
requirements governing gene and cell therapy products have changed frequently and may continue to change in the future. The FDA has established
the Office of Tissues and Advanced Therapies within its Center for Biologics Evaluation and Research, or CBER, to consolidate the review
of gene therapy and related products, and has established the Cellular, Tissue and Gene Therapies Advisory Committee to advise the CBER
in its review. Gene therapy clinical trials conducted at institutions that receive funding for recombinant DNA research from the National
Institute of Health (NIH) also are potentially subject to review by the NIH Office of Science Policy's Recombinant DNA Advisory
Committee, or the RAC, in limited circumstances. Although the FDA decides whether individual gene therapy protocols may proceed, the
RAC public review process, if undertaken, can delay the initiation of a clinical trial, even if the FDA has reviewed the trial design
and details and authorized its initiation. Conversely, the FDA can put an investigational new drug application, or IND, on clinical hold
even if the RAC has provided a favorable review or an exemption from in-depth, public review. If we were to engage an NIH-funded institution
to conduct a clinical trial, that institution's institutional biosafety committee, or IBC, as well as its institutional review
board, or IRB, would need to review the proposed clinical trial to assess the safety of the trial and may determine that RAC review is
needed. In addition, adverse developments in clinical trials of gene therapy products conducted by others may cause the FDA or other
oversight bodies to change the requirements for approval of any of our product candidates. Similarly, foreign regulatory authorities
may issue new guidelines concerning the development and marketing authorization for gene therapy medicinal products and require that
we comply with these new guidelines.

 Some
of our future products may be viewed by the FDA as combination products and the review of combination products is often more complex
and more time consuming than the review of other types of products.

 Our
future products may be regulated by the FDA as combination products. For a combination product, the FDA must determine which center or
centers within the FDA will review the product candidate and under what legal authority the product candidate will be reviewed. The process
of obtaining FDA marketing clearance or approval is lengthy, expensive, and uncertain, and we cannot be sure that any of our combination
products, or any other products, will be cleared or approved in a timely fashion, or at all. In addition, the review of combination products
is often more complex and more time consuming than the review of a product candidate under the jurisdiction of only one center within
the FDA. We cannot be sure that the FDA will not select to have our combination products reviewed and regulated by only one FDA center
and/or different legal authority, in which case the path to regulatory approval would be different and could be more lengthy and costly.
If the FDA does not approve or clear our products in a timely fashion, or at all, our business and financial condition will be adversely
affected.

 If
we encounter difficulties enrolling patients in clinical trials, our clinical development activities could be delayed or otherwise adversely
affected.

 The
timely completion of clinical trials in accordance with their protocols depends, among other things, on our ability to enroll a sufficient
number of patients who remain in the study until its conclusion. We may encounter delays in enrolling, or be unable to enroll, a sufficient
number of patients to complete any of clinical trials of our product candidates, and even once enrolled we may be unable to retain a
sufficient number of patients to complete the trials. The enrollment of patients depends on many factors, including:

 the
 patient eligibility criteria defined in the protocol;

 the
 size of the patient population required for analysis of the trial's primary endpoints;

 the
 proximity of patients to study sites;

 the
 design of the trial;

 our
 ability to recruit clinical trial investigators with the appropriate competencies and experience;

 clinicians'
 and patients' perceptions as to the potential advantages of the product candidate being studied in relation to other available
 therapies, including any new products that may be approved for the indications we are investigating;

 our
 ability to obtain and maintain patient consents; and

 the
 risk that patients enrolled in clinical trials will drop out of the trials before completion.

 In
addition, clinical trials of our product candidates will compete with other clinical trials for product candidates of other companies
that are in the same therapeutic areas as our product candidates, and this competition will reduce the number and types of patients available
to us, because some patients who might have opted to enroll in trials of our product candidates may instead opt to enroll in a trial
being conducted by one of our competitors. Since the number of qualified clinical investigators is limited, we expect that clinical trials
or our product candidates may be conducted at the same clinical trial sites that some of our competitors use, which will reduce the number
of patients who are available for our clinical trials in such clinical trial site.

 Delays
or failures in planned patient enrollment or retention may result in increased costs, program delays or both, which could have a harmful
effect on our ability to develop our product candidates or could render further development impossible.

 Even
if we obtain FDA approval for any of our product candidates in the United States, we may never obtain approval for or commercialize it
in any other jurisdiction, which would limit our ability to realize its full market potential.

 In
order to market any products in any particular jurisdiction, we or a licensee or collaborator will need to establish and comply with
numerous and varying regulatory requirements on a country-by-country basis regarding safety and efficacy. Approval by the FDA in the
United States does not ensure approval by regulatory authorities in other countries or jurisdictions. However, the failure to obtain
approval in one jurisdiction may negatively impact our ability to obtain approval elsewhere. In addition, clinical trials conducted in
one country may not be accepted by regulatory authorities in other countries, and regulatory approval in one country does not guarantee
regulatory approval in any other country.

 Approval
processes vary among countries and can involve additional product testing and validation and additional administrative review periods.
Seeking foreign regulatory approval could result in difficulties and increased costs for us and require additional preclinical studies
or clinical trials which could be costly and time consuming. Regulatory requirements can vary widely from country to country and could
delay or prevent the introduction of our products in those countries. We do not have any product candidates approved for sale in any
jurisdiction, including in international markets, and we do not have experience in obtaining regulatory approval in international markets.
If we fail to comply with regulatory requirements in international markets or to obtain and maintain required approvals, or if regulatory
approvals in international markets are delayed, our target market will be reduced and our ability to realize the full market potential
of any product we develop will be unrealized.

 Clinical
studies are costly, time consuming and inherently risky, and we may fail to demonstrate safety and efficacy to the satisfaction of applicable
regulatory authorities.

 Clinical
development is expensive, time consuming and involves significant risk. We cannot guarantee that any clinical studies will be conducted
as planned or completed on schedule, if at all. A failure of one or more clinical studies can occur at any stage of development. Events
that may prevent successful or timely completion of clinical development include but are not limited to:

 inability
 to generate satisfactory preclinical, toxicology, or other in vivo or in vitro data to support the initiation or continuation of
 clinical studies necessary for product approval;

 delays
 in reaching agreement on acceptable terms with clinical research organizations (CROs) and clinical study sites, the terms of which
 can be subject to extensive negotiation and may vary significantly among different CROs and clinical study sites;

 delays
 in obtaining required Institutional Review Board, or IRB, approval at each clinical study site;

 failure
 to permit the conduct of a study by regulatory authorities, after review of an investigational new drug, or IND, or equivalent foreign
 application or amendment;

 delays
 in recruiting qualified patients in our clinical studies;

 failure
 by clinical sites or our CROs or other third parties to adhere to clinical study requirements or report complete findings;

 failure
 to perform the clinical studies in accordance with the FDA's good clinical practices requirements, or applicable foreign regulatory
 guidelines;

 patients
 dropping out of our clinical studies;

 occurrence
 of adverse events associated with our product candidates;

 inability
 to use clinical trial results from foreign jurisdictions in support of U.S. regulatory approval;

 in regulatory requirements and guidance that require amending or submitting new clinical protocols;

 the
 cost of clinical studies of our product candidates;

 negative
 or inconclusive results from our clinical trials which may result in our deciding, or regulators requiring us, to conduct additional
 clinical studies or abandon development programs for a product candidate; and

 delays
 in reaching agreement on acceptable terms with third-party manufacturers, or delays in the manufacture of sufficient quantities of
 our product candidates for use in clinical studies.

 Any
inability to successfully complete clinical development and obtain regulatory approval could result in additional costs to us or impair
our ability to generate revenue. Clinical study delays could also shorten any periods during which our products have patent protection
and may allow competitors to develop and bring products to market before we do and may harm our business and results of operations.

 Even
if a product candidate receives regulatory approval, we will be subject to ongoing regulatory obligations and continued regulatory review,
which may result in significant additional expense, and we may be subject to penalties if we fail to comply with regulatory requirements
or experience unanticipated problems with our product candidates.

 Any
product candidate that receives marketing approval, along with the manufacturing processes, post-approval clinical data, labeling, packaging,
distribution, adverse event reporting, storage, recordkeeping, export, import, advertising and promotional activities for such product,
among other things, will be subject to extensive and ongoing requirements of and review by the FDA and other regulatory authorities.
These requirements include submissions of safety and other post-marketing information and reports, establishment registration and drug
listing requirements, continued compliance with cGMP requirements relating to manufacturing, quality control, quality assurance and corresponding
maintenance of records and documents, requirements regarding the distribution of samples to physicians and recordkeeping and Good Clinical
Practice (GCP) requirements for any clinical trials that we conduct post-approval.

 The
FDA closely regulates the post-approval marketing and promotion of genetic medicines to ensure they are marketed only for the approved
indications and in accordance with the provisions of the approved labeling. The FDA imposes stringent restrictions on manufacturers'
communications regarding off-label use and if we market our products for uses beyond their approved indications, we may be subject to
enforcement action for off-label marketing. Violations of the U.S. federal Food, Drug, and Cosmetic Act, or FDCA, relating to the promotion
of prescription drugs may lead to FDA enforcement actions and investigations alleging violations of federal and state health care fraud
and abuse laws, as well as state consumer protection laws.

 In
addition, later discovery of previously unknown adverse events or other problems with our products, manufacturers or manufacturing processes,
including adverse events of unanticipated severity or frequency, or with our third-party manufacturers or manufacturing processes, or
failure to comply with regulatory requirements, may yield various results, including:

 restrictions
 on manufacturing such products

 restrictions
 on the labeling or marketing of a product

 restrictions
 on product distribution or use

 requirements
 to conduct post-marketing studies or clinical trials

 warning
 letters or holds on clinical trials

 withdrawal
 of the products from the market

 refusal
 to approve pending applications or supplements to approved applications that we submit

 recall
 of products

 fines,
 restitution or disgorgement of profits or revenues

 suspension
 or withdrawal of marketing approvals

 refusal
 to permit the import or export of our products

 product
 seizure or detention or

 injunctions
 or the imposition of civil or criminal penalties.

 The
FDA's policies may change, and additional government regulations may be enacted that could prevent, limit or delay regulatory approval
of any of our product candidates. For example, in December 2016, the 21st Century Cures Act, or Cures Act, was signed into law. The Cures
Act, among other things, is intended to modernize the regulation of drugs and biologics and spur innovation, but its ultimate implementation
is unclear. If we are slow or unable to adapt to changes in existing requirements or the adoption of new requirements or policies, or
if we are not able to maintain regulatory compliance, we may lose any marketing approval that we may have obtained which would adversely
affect our business, prospects and ability to achieve or sustain profitability. We also cannot predict the likelihood, nature or extent
of government regulation that may arise from future legislation or administrative or executive action, either in the United States or
abroad.

 Our
product candidates may cause serious adverse events or undesirable side effects or have other properties which may delay or prevent their
regulatory approval, limit the commercial profile of an approved label, or, result in significant negative consequences following marketing
approval, if any.

 Serious
adverse events or undesirable side effects caused by our product candidates could cause an interruption, delay or halt of clinical trials
and could result in a more restrictive label or the delay or denial of regulatory approval by the FDA or other comparable foreign authorities.
Results of clinical trials could reveal a high and unacceptable severity and prevalence of side effects, toxicities or unexpected characteristics,
including death.

 For
example, there have been significant adverse side effects in cell therapy treatments in the past, including reported cases of certain
cancers. In addition to side effects that may be caused by our product candidates, the conditioning, administration process or related
procedures also can cause adverse side effects, including compromise of a patient's immune system. If unacceptable side effects
arise in the development of our product candidates, we, the FDA, the IRBs at the institutions in which our studies are conducted or Data
Safety Monitoring Board, or DSMB, could suspend or terminate our clinical trials or the FDA or comparable foreign regulatory authorities
could order us to cease clinical trials or deny approval of our product candidates for any or all targeted indications. Treatment-related
side effects could also affect patient recruitment or the ability of enrolled patients to complete the trial or result in potential product
liability claims. In addition, these side effects may not be appropriately recognized or managed by the treating medical staff. We expect
to have to train medical personnel using our product candidates to understand the side effect profiles for our clinical trials and upon
any commercialization of any of our product candidates. Inadequate training in recognizing or managing the potential side effects of
our product candidates could result in patient injury or death. Any of these occurrences may harm our business, financial condition and
prospects significantly.

 If
any of our product candidates receives marketing approval, and we or others later identify undesirable side effects caused by any such
product, including during any long-term follow-up observation period recommended or required for patients who receive treatment using
our products, a number of potentially significant negative consequences could result, including:

 regulatory
 authorities may withdraw approvals of such product;

 we
 may be required to recall a product or change the way such product is administered to patients;

 additional
 restrictions may be imposed on the marketing of the particular product or the manufacturing processes for the product;

 regulatory
 authorities may require additional warnings on the label, such as a "black box" warning or contraindication;

 we
 may be required to implement a Risk Evaluation and Mitigation Strategy, or REMS, or create a medication guide outlining the risks
 of such side effects for distribution to patients;

 the
 product could become less competitive;

 we
 could be sued and held liable for harm caused to patients; and

 our
 reputation may suffer.

 Any
of these events could prevent us from achieving or maintaining market acceptance of the particular product candidate, if approved, and
could significantly harm our business, results of operations and prospects.

 We
face potential product liability, and, if successful claims are brought against us, we may incur substantial liability and costs. If
the use or misuse of our product candidates harm patients or is perceived to harm patients even when such harm is unrelated to our product
candidates, our regulatory approvals could be revoked or could otherwise be negatively impacted, and we could be subject to costly and
damaging product liability claims.

 The
use or misuse of any product candidates in clinical trials and the sale of any products for which we obtain marketing approval exposes
us to the risk of product liability claims. Product liability claims might be brought against us by consumers, healthcare providers,
pharmaceutical companies, or others selling or otherwise coming into contact with our products. There is a risk that our product candidates
may induce adverse events. If we cannot successfully defend against product liability claims, we could incur substantial liability and
costs. In addition, regardless of merit or eventual outcome, product liability claims may result in:

 impairment
 of our business reputation;

 initiation
 of investigations by regulators;

 withdrawal
 of clinical trial participants;

 costs
 due to related litigation;

 distraction
 of management's attention from our primary business;

 substantial
 monetary awards to patients or other claimants;

 the
 inability to commercialize our product candidates;

 product
 recalls, withdrawals or labeling, and marketing or promotional restrictions;

 loss
 of revenue; and

 decreased
 demand for our product candidates, if approved for commercial sale.

 We
may not be able to maintain insurance coverage at a reasonable cost or in sufficient amounts to protect us against losses due to liability.
If and when we commence clinical trials or obtain marketing approval for any product candidates, we intend to increase our insurance
coverage to include clinical use or the sale of commercial products, as applicable; however, we may be unable to obtain product liability
insurance on commercially reasonable terms or in adequate amounts. On occasion, large judgments have been awarded in class action lawsuits
based on drugs or medical treatments that had unanticipated adverse effects. A successful product liability claim or series of claims
brought against us could cause our stock price to decline and, if judgments exceed our insurance coverage, could adversely affect our
results of operations and business.

 Our
insurance policies are expensive and protect us only from some business risks, which leaves us exposed to significant uninsured liabilities.

 We
do not carry insurance for all categories of risk that our business may encounter. Some of the policies we currently maintain include
general liability, employment practices liability, property, auto, workers' compensation, umbrella, and directors' and officers'
insurance.

 Any
additional product liability insurance coverage we acquire in the future, may not be sufficient to reimburse us for any expenses or losses
we may suffer. Moreover, insurance coverage is becoming increasingly expensive and, in the future, we may not be able to maintain insurance
coverage at a reasonable cost or in sufficient amounts to protect us against losses due to liability. If we obtain marketing approval
for any of our product candidates, we intend to acquire insurance coverage to include the sale of commercial products; however, we may
be unable to obtain product liability insurance on commercially reasonable terms or in adequate amounts. A successful product liability
claim or series of claims brought against us could cause our share price to decline and, if judgments exceed our insurance coverage,
could adversely affect our results of operations and business, including preventing or limiting the commercialization of any product
candidates we develop.

 As
a public company, it can be difficult and expensive for us to obtain director and officer liability insurance, and we may be required
to accept reduced policy limits and coverage or incur substantially higher costs to obtain the same or similar coverage. As a result,
it may be more difficult for us to attract and retain qualified people to serve on the AgeX Board, our board committees or as executive
officers. We do not know, however, if we will be able to maintain existing insurance with adequate levels of coverage. Any significant
uninsured liability may require us to pay substantial amounts, which would adversely affect our cash position and results of operations.

 Our
employees and independent contractors, including principal investigators, CROs, consultants, vendors, and any third parties we may engage
in connection with development and commercialization may engage in misconduct or other improper activities, including noncompliance with
regulatory standards and requirements, which could have a material adverse effect on our business.

 Misconduct
by our employees and independent contractors, including principal investigators, contract research organizations, or CROs, consultants,
vendors, and any third parties we may engage in connection with development and commercialization, could include intentional, reckless
or negligent conduct or unauthorized activities that violate: (i) the laws and regulations of the FDA, European Medical Agency (EMA)
rules and regulations and other similar regulatory requirements, including those laws that require the reporting of true, complete and
accurate information to such authorities; (ii) manufacturing standards; (iii) data privacy, security, fraud and abuse and other healthcare
laws and regulations; or (iv) laws that require the reporting of true, complete and accurate financial information and data. Specifically,
sales, marketing and business arrangements in the healthcare industry are subject to extensive laws and regulations intended to prevent
fraud, misconduct, kickbacks, self-dealing and other abusive practices. These laws and regulations may restrict or prohibit a wide range
of pricing, discounting, marketing and promotion, sales commission, customer incentive programs and other business arrangements. Activities
subject to these laws could also involve the improper use or misrepresentation of information obtained in the course of clinical trials,
creation of fraudulent data in preclinical studies or clinical trials or illegal misappropriation of drug product, which could result
in regulatory sanctions and cause serious harm to our reputation. It is not always possible to identify and deter misconduct by employees
and other third parties, and the precautions we take to detect and prevent this activity may not be effective in controlling unknown
or unmanaged risks or losses or in protecting us from governmental investigations or other actions or lawsuits stemming from a failure
to comply with such laws or regulations. Additionally, we are subject to the risk that a person or government could allege such fraud
or other misconduct, even if none occurred. If any such actions are instituted against us, and we are not successful in defending ourselves
or asserting our rights, those actions could have a significant impact on our business and results of operations, including the imposition
of significant civil, criminal and administrative penalties, damages, monetary fines, disgorgements, possible exclusion from participation
in Medicare, Medicaid, other U.S. federal healthcare programs or healthcare programs in other jurisdictions, individual imprisonment,
other sanctions, contractual damages, reputational harm, diminished profits and future earnings, and curtailment of our operations.

 Government-imposed
bans or restrictions and religious, moral, and ethical concerns about the use of human embryonic stem cells could prevent us from developing
and successfully marketing stem cell products.

 Government-imposed
bans or restrictions on the use of embryos or human embryonic stem cells (hES cells), in research and development in the United States
and abroad could generally constrain stem cell research, thereby limiting the market and demand for our products.

 California
law requires that stem cell research be conducted under the oversight of a Stem Cell Research Oversight (SCRO) Committee. Many kinds
of stem cell research, including the derivation of new hES cell lines, may only be conducted in California with the prior written approval
of the SCRO Committee. A SCRO Committee could prohibit or impose restrictions on the research that we plan to do. An adverse decision
by a SCRO Committee, or their imposition of restrictions on a research program could adversely affect our ability to enter into co-development
or licensing arrangements for the development of a product candidate.

 The
use of hES cells may give rise to religious, moral, and ethical issues. These considerations could lead to more restrictive government
regulations or could generally constrain stem cell research, thereby limiting the market and demand for our products.

 Adverse
publicity regarding cell-based therapies could impact our business.

 Adverse
publicity due to the ethical and social controversies surrounding the use of embryonic stem cells or any adverse reported side effects
from any stem cell or other cell therapy clinical trials or to the failure of such trials to demonstrate that these therapies are efficacious
could materially and adversely affect our ability to raise capital, conduct and complete clinical trials and achieve market acceptance
of such products, if approved. For example, research institutions, including those who may be our collaborators, may from time to time
publish findings or studies regarding the human genome (such as the Human Genome Project) that adversely implicate our product candidates,
including findings of cancer dependencies in cell lines used in our cell-based therapies.

 The
price and sale of any product candidates that we may develop may be limited by health insurance coverage and government regulation.

 Success
in selling any pharmaceutical and cell-based products and medical devices that we may develop may depend in part on the extent to which
health insurance companies, health maintenance organizations (HMOs), and government health administration authorities such as Medicare
and Medicaid will pay for the cost of the products and related treatment. Until a new product is introduced into the medical marketplace,
we will not know with certainty whether adequate health insurance, HMO, and government coverage will be available to permit the product
to be sold at a price high enough for us to generate a profit. In some foreign countries, pricing or profitability of health care products
is subject to government control, which may result in low prices for our products. Provisions of the Inflation Reduction Act of 2022
may impact the prices of drug products that are sold in the United States, particularly through Medicare programs. Starting in 2023,
a manufacturer of a drug or biological product covered by Medicare Parts B or D must pay a rebate to the federal government if the product's
price increases faster than the rate of inflation. This calculation is made on a drug product by drug product basis and the amount of
the rebate owed to the federal government is directly dependent on the volume of a drug product that is paid for by Medicare Parts B
or D. Additionally, starting in payment year 2026, CMS will negotiate drug prices annually for a select number of single source Part
D drugs without generic or biosimilar competition. CMS will also negotiate drug prices for a select number of Part B drugs starting for
payment year 2028. If a drug product is selected by CMS for negotiation, it is expected that the revenue generated from such drug will
decrease. There have been a number of other federal and state proposals to implement similar government controls, and new proposals are
likely to be made in the future. We cannot be sure that coverage and reimbursement in the United States, the EU or elsewhere will be
available for our product candidates or any product that we may develop, and any reimbursement that may become available may be decreased
or eliminated in the future.

 Third-party
payors increasingly are challenging prices charged for pharmaceutical products and services, and many third-party payors may refuse to
provide coverage and reimbursement for particular drugs or biologics when an equivalent generic drug, biosimilar or a less expensive
therapy is available. It is possible that a third-party payor may consider our product candidates as substitutable and only offer to
reimburse patients for the less expensive product. Even if we show improved efficacy or improved convenience of administration with our
product candidates, pricing of existing third-party therapeutics may limit the amount we will be able to charge for our product candidates.
These payors may deny or revoke the reimbursement status of a given product or establish prices for new or existing marketed products
at levels that are too low to enable us to realize an appropriate return on our investment in our product candidates. If reimbursement
is not available or is available only at limited levels, we may not be able to successfully commercialize our product candidates and
may not be able to obtain a satisfactory financial return on our product candidates.

 There
is significant uncertainty related to the insurance coverage and reimbursement of newly-approved products. In the United States, third-party
payors, including private and governmental payors, such as the Medicare and Medicaid programs, play an important role in determining
the extent to which new drugs and biologics will be covered. The Medicare and Medicaid programs increasingly are used as models in the
United States for how private payors and other governmental payors develop their coverage and reimbursement policies for drugs and biologics.
Some third-party payors may require pre-approval of coverage for new or innovative devices or drug therapies before they will reimburse
healthcare providers who use such therapies. We cannot predict at this time what third-party payors will decide with respect to the coverage
and reimbursement for our product candidates.

 No
uniform policy for coverage and reimbursement for products exists among third-party payors in the United States. Therefore, coverage
and reimbursement for products can differ significantly from payor to payor. As a result, the coverage determination process is often
a time-consuming and costly process that will require us to provide scientific and clinical support for the use of our product candidates
to each payor separately, with no assurance that coverage and adequate reimbursement will be applied consistently or obtained in the
first instance. Furthermore, rules and regulations regarding reimbursement change frequently, in some cases on short notice, and we believe
that changes in these rules and regulations are likely.

 Outside
the United States, international operations are generally subject to extensive governmental price controls and other market regulations,
and we believe the increasing emphasis on cost-containment initiatives in Europe and other countries have and will continue to put pressure
on the pricing and usage of our product candidates. In many countries, the prices of medical products are subject to varying price control
mechanisms as part of national health systems. Other countries allow companies to fix their own prices for medical products but monitor
and control company profits. Additional foreign price controls or other changes in pricing regulation could restrict the amount that
we are able to charge for our product candidates. Accordingly, in markets outside the United States, the reimbursement for our product
candidates may be reduced compared with the United States and may be insufficient to generate commercially-reasonable revenue and profits.

increasing efforts by governmental and third-party payors in the United States and abroad to cap or reduce healthcare costs may cause
such organizations to limit both coverage and the level of reimbursement for newly approved products and, as a result, they may not cover
or provide adequate payment for our product candidates. While it is not possible to predict or model the insurance landscape at the time
any of our product candidates may receive regulatory approval, we expect to experience pricing pressures in connection with the sale
of our product candidates due to the trend toward managed health care, the increasing influence of health maintenance organizations and
additional legislative changes. The downward pressure on healthcare costs in general, particularly prescription drugs and biologics and
surgical procedures and other treatments, has become intense. As a result, increasingly high barriers are being erected to the entry
of new products.

 Enacted
and future healthcare legislation, including the ACA, may increase the difficulty and cost of obtaining marketing approval and commercializing
our product candidates and may affect the prices we may set.

 In
the United States, the EU and other jurisdictions, there have been, and we expect there will continue to be, a number of legislative
and regulatory changes and proposed changes to the healthcare system that could affect our future results of operations. As a result
of the adoption of the ACA in the United States, substantial changes have been made to the system for paying for healthcare in the United
States. Certain provisions related to cost-savings and reimbursement measures could adversely affect our future financial performance.
For example, among the provisions of the ACA, those of greatest importance to the biopharmaceutical industry includes the following:

 an
 annual, non-deductible fee payable by any entity that manufactures or imports certain branded prescription drugs and biologic agents
 (other than those designated as orphan drugs), which is apportioned among these entities according to their market share in certain
 government healthcare programs;

 new
 requirements to report certain financial arrangements with physicians and teaching hospitals, including reporting "transfers
 of value" made or distributed to prescribers and other healthcare providers and reporting investment interests held by physicians
 and their immediate family members;

 a
 new methodology by which rebates owed by manufacturers under the Medicaid Drug Rebate Program are calculated for drugs that are inhaled,
 infused, instilled, implanted or injected;

 expansion
 of eligibility criteria for Medicaid programs by, among other things, allowing states to offer Medicaid coverage to certain individuals
 with income at or below 133% of the federal poverty level, thereby potentially increasing a manufacturer's Medicaid rebate
 liability;

 a
 licensure framework for follow on biologic products;

 a
 new Patient-Centered Outcomes Research Institute to oversee, identify priorities in, and conduct comparative clinical effectiveness
 research, along with funding for such research; and

 establishment
 of a Center for Medicare Innovation at the Centers for Medicare & Medicaid Services, or CMS, to test innovative payment and service
 delivery models to lower Medicare and Medicaid spending, potentially including prescription drug spending.

 The
ACA has been subject to revision and to judicial, congressional, and executive challenges. As a result of tax reform legislation passed
in December 2017, the requirement that all individuals maintain health insurance coverage or pay a penalty, referred to as the "individual
mandate" was eliminated effective January 1, 2019. According to the Congressional Budget Office, the repeal of the individual mandate
will cause 13 million fewer Americans to be insured in 2027 and premiums in insurance markets may rise.

 The
costs of prescription pharmaceuticals in the United States have also been the subject of considerable debate, and new legislative and
administrative measures could be implemented to address such costs. To date, there have been several recent U.S. congressional inquiries
and proposed state and federal legislation designed to, among other things, improve transparency in drug pricing, review the relationship
between pricing and manufacturer patient programs, reduce the costs of drugs under Medicare, and reform government program reimbursement
methodologies for drug products. Under recent legislation, starting in 2023 a manufacturer of a drug or biological product covered by
Medicare Parts B or D must pay a rebate to the federal government if the product's price increases faster than the rate of inflation.
This calculation is made on a drug product by drug product basis and the amount of the rebate owed to the federal government is directly
dependent on the volume of a drug product that is paid for by Medicare Parts B or D. Additionally, starting in payment year 2026, CMS
will negotiate drug prices annually for a select number of single source Part D drugs without generic or biosimilar competition. CMS
will also negotiate drug prices for a select number of Part B drugs starting for payment year 2028. If a drug product is selected by
CMS for negotiation, it is expected that the revenue generated from such drug will decrease. The pricing of prescription pharmaceuticals
is also subject to governmental control outside the United States. In these other countries, pricing negotiations with governmental authorities
can take considerable time after the receipt of marketing approval for a product. To obtain reimbursement or pricing approval in some
countries, we may be required to conduct a clinical trial that compares the cost effectiveness of our product candidates to other available
therapies. If reimbursement of our products is unavailable or limited in scope or amount, or if pricing is set at unsatisfactory levels,
our ability to generate revenues and become profitable could be impaired.

 Legislative
and regulatory proposals have been made to expand post-approval requirements and restrict sales and promotional activities for approved
products. In addition, there have been several recent Congressional inquiries and proposed bills designed to, among other things, bring
more transparency to drug pricing, review the relationship between pricing and manufacturer patient programs, reduce the cost of drugs
under Medicare and reform government program reimbursement methodologies for drugs. We cannot be sure whether additional legislative
changes will be enacted, or whether the FDA regulations, guidance or interpretations will be changed, or what the impact of such changes
on the marketing approvals of our product candidates, if any, may be. In addition, increased scrutiny by the U.S. Congress of the FDA's
approval process may significantly delay or prevent marketing approval, as well as subject us to more stringent labeling and post-marketing
testing and other requirements.

payment methodologies may be subject to changes in healthcare legislation and regulatory initiatives. For example, CMS may develop new
payment and delivery models, such as bundled payment models. In addition, recently there has been heightened governmental scrutiny over
the manner in which manufacturers set prices for their marketed products. We expect that additional U.S. federal healthcare reform measures
will be adopted in the future, any of which could limit the amounts that the U.S. federal government will pay for healthcare products
and services, which could result in reduced demand for our product candidates or additional pricing pressures.

 Individual
states in the United States have also become increasingly aggressive in passing legislation and implementing regulations designed to
control pharmaceutical and biological product pricing, including price or patient reimbursement constraints, discounts, restrictions
on certain product access and marketing cost disclosure and transparency measures, and, in some cases, designed to encourage importation
from other countries and bulk purchasing. Legally-mandated price controls on payment amounts by third-party payors or other restrictions
could harm our business, results of operations, financial condition and prospects. In addition, regional healthcare authorities and individual
hospitals are increasingly using bidding procedures to determine what pharmaceutical products and which suppliers will be included in
their prescription drug and other healthcare programs. This could reduce the ultimate demand for our product candidates or put pressure
on our product pricing.

 In
the EU, similar political, economic and regulatory developments may affect our ability to profitably commercialize our product candidates,
if approved. In addition to continuing pressure on prices and cost containment measures, legislative developments at the EU or member
state level may result in significant additional requirements or obstacles that may increase our operating costs. The delivery of healthcare
in the EU, including the establishment and operation of health services and the pricing and reimbursement of medicines, is almost exclusively
a matter for national, rather than EU, law and policy. National governments and health service providers have different priorities and
approaches to the delivery of health care and the pricing and reimbursement of products in that context. In general, however, the healthcare
budgetary constraints in most EU member states have resulted in restrictions on the pricing and reimbursement of medicines by relevant
health service providers. Coupled with ever-increasing EU and national regulatory burdens on those wishing to develop and market products,
this could prevent or delay marketing approval of our product candidates, restrict or regulate post-approval activities and affect our
ability to commercialize our product candidates, if approved.

 In
markets outside of the United States and EU, reimbursement and healthcare payment systems vary significantly by country, and many countries
have instituted price ceilings on specific products and therapies.

 We
cannot predict the likelihood, nature or extent of government regulation that may arise from future legislation or administrative action
in the United States, the EU or any other jurisdiction. If we or any third parties we may engage are slow or unable to adapt to changes
in existing requirements or the adoption of new requirements or policies, or if we or such third parties are not able to maintain regulatory
compliance, our product candidates may lose any regulatory approval that may have been obtained and we may not achieve or sustain profitability.

 If
we fail to comply with the extensive legal and regulatory requirements affecting the health care industry, we could face increased costs,
penalties and a loss of business.

 Our
activities, and the activities of any collaborators, distributors and other third-party providers that we may engage in the future, will
be subject to extensive government regulation and oversight both in the U.S. and in foreign jurisdictions. The FDA and comparable agencies
in other jurisdictions will directly regulate many of our most critical business activities, including the conduct of preclinical and
clinical studies, product manufacturing, advertising and promotion, product distribution, adverse event reporting, and product risk management.
Our interactions in the United States or abroad with physicians and other health care providers that prescribe or purchase our products
will also be subject to government regulation designed to prevent fraud and abuse in the sale and use of the products and place greater
restrictions on the marketing practices of health care companies. Health care companies such as ours are facing heightened scrutiny of
their relationships with health care providers from anti-corruption enforcement officials. In addition, health care companies such as
ours have been the target of lawsuits and investigations alleging violations of government regulation, including claims asserting submission
of incorrect pricing information, impermissible off-label promotion of pharmaceutical products, payments intended to influence the referral
of health care business, submission of false claims for government reimbursement, antitrust violations, and violations related to environmental
matters. Risks relating to compliance with laws and regulations may be heightened if we operate globally.

 Regulations
governing the health care industry are subject to change, with possibly retroactive effect, including:

 new
 laws, regulations or judicial decisions, or new interpretations of existing laws, regulations or decisions, related to health care
 availability, pricing or marketing practices, compliance with wage and hour laws and other employment practices, method of delivery,
 payment for health care products and services, compliance with health information and data privacy and security laws and regulations,
 tracking and reporting payments and other transfers of value made to physicians and teaching hospitals, extensive anti-bribery and
 anti-corruption prohibitions, product serialization and labeling requirements and used product take-back requirements;

 in the FDA and foreign regulatory approval processes that may delay or prevent the approval of new products and result in lost market
 opportunity;

 requirements
 that provide for increased transparency of clinical trial results and quality data, such as the EMA's clinical transparency
 policy, which could impact our ability to protect trade secrets and competitively-sensitive information contained in approval applications
 or could be misinterpreted leading to reputational damage, misperception, or legal action which could harm our business; and

 in FDA and foreign regulations that may require additional safety monitoring, labeling changes, restrictions on product distribution
 or use, or other measures after the introduction of our products to market, which could increase our costs of doing business, adversely
 affect the future permitted uses of approved products, or otherwise adversely affect the market for our products.

 Violations
of governmental regulation may be punishable by criminal and civil sanctions against us, including fines and civil monetary penalties
and exclusion from participation in government programs, including Medicare and Medicaid, as well as sanctions against executives overseeing
our business. In addition to penalties for violation of laws and regulations, we could be required to repay amounts we received from
government payors or pay additional rebates and interest if we are found to have miscalculated the pricing information we have submitted
to the government. We cannot ensure that our compliance controls, policies and procedures will in every instance protect us from acts
committed by our employees, collaborators, partners or third-party providers that would violate the laws or regulations of the jurisdictions
in which we operate. Whether or not we have complied with the law, an investigation into alleged unlawful conduct could increase our
expenses, damage our reputation, divert management time and attention, and adversely affect our business.

 We
may be subject, directly or indirectly, to federal and state healthcare fraud and abuse laws, false claims laws, and health information
privacy and security laws, and if we are unable to comply with such laws, we could face substantial penalties.

 If
the FDA grants marketing approval for any of our product candidates or technologies and commercializing those products or technologies
begins in the United States, our operations may be subject to various federal and state fraud and abuse laws, including, without limitation,
the federal Anti-Kickback Statute, the federal False Claims Act, and physician sunshine laws and regulations. These laws may impact,
among other things, product sales, marketing, and education programs. In addition, we may be subject to patient privacy regulation by
both the federal government and the states in which we conduct our business. The laws that may affect our ability to operate include:

 the
 federal Anti-Kickback Statute, which prohibits, among other things, persons from knowingly and willfully soliciting, receiving, offering
 or paying remuneration, directly or indirectly, to induce, or in return for, the purchase or recommendation of an item or service
 reimbursable under a federal healthcare program, such as the Medicare and Medicaid programs;

 federal
 civil and criminal false claims laws and civil monetary penalty laws, which prohibit, among other things, individuals or entities
 from knowingly presenting, or causing to be presented, claims for payment from Medicare, Medicaid, or other third-party payors that
 are false or fraudulent;

 the
 federal Health Insurance Portability and Accountability Act of 1996 (HIPAA), which created new federal criminal statutes that prohibit
 executing a scheme to defraud any healthcare benefit program and making false statements relating to healthcare matters;

 HIPAA,
 as amended by the Health Information Technology and Clinical Health Act, or HITECH, and implementing regulations, which impose certain
 requirements relating to the privacy, security, and transmission of individually identifiable health information;

 the
 Physician Payments Sunshine Act which requires manufacturers of drugs, devices, biologics, and medical supplies to report annually
 to the U.S. Department of Health and Human Services information related to payments and other transfers of value to physicians, other
 healthcare providers, and teaching hospitals, and ownership and investment interests held by physicians and other healthcare providers
 and their immediate family members and applicable group purchasing organizations;

 the
 FDCA, which prohibits, among other things, the adulteration or misbranding of drugs, biologics and medical devices

 the
 U.S. Public Health Service Act, which prohibits, among other things, the introduction into interstate commerce of a biological product
 unless a biologics license is in effect for that product and

 state
 law equivalents of each of the above federal laws, such as anti-kickback and false claims laws that may apply to items or services
 reimbursed by any third-party payors, including commercial insurers; state laws that require pharmaceutical companies to comply with
 the pharmaceutical industry's voluntary compliance guidelines and the relevant compliance guidance promulgated by the federal
 government, or that otherwise restrict payments that may be made to healthcare providers and other potential referral sources; state
 laws that require drug manufacturers to report information related to payments and other transfers of value to physicians and other
 healthcare providers or marketing expenditures; and state laws governing the privacy and security of health information in certain
 circumstances.

of the breadth of these laws and the narrowness of the statutory exceptions and safe harbors available, it is possible that some of our
business activities could be subject to challenge under one or more of such laws. In addition, recent health care reform legislation
has strengthened these laws. Further, state laws differ from each other and from federal law in significant ways, thus complicating compliance
efforts.

 If
our operations are found to be in violation of any of the laws described above or any other governmental regulations that apply, we may
be subject to penalties, including civil and criminal penalties, damages, fines, exclusion from participation in government health care
programs, such as Medicare and Medicaid, imprisonment, and the curtailment or restructuring of our operations, any of which could adversely
affect our ability to operate our business and our results of operations.

 Risks
Related to our Dependence on Third Parties

 We
may become dependent on future collaborations to develop and commercialize our product candidates and to provide the regulatory compliance,
sales, marketing, and distribution capabilities required for the success of our business.

 We
may enter into various kinds of collaborative research and development and product marketing agreements to develop and commercialize
our products. The expected future milestone payments and cost reimbursements from collaboration agreements could provide an important
source of financing for our research and development programs, thereby facilitating the application of our technology to the development
and commercialization of our products, but there are risks associated with entering into collaboration arrangements.

 The
process of establishing and maintaining collaborative relationships is difficult, time-consuming and involves significant uncertainty,
such as:

 a
 collaboration partner may shift its priorities and resources away from our product candidates due to a change in business strategies,
 or a merger, acquisition, sale or downsizing;

 a
 collaboration partner may seek to renegotiate or terminate their relationships with us due to unsatisfactory clinical results, manufacturing
 issues, a change in business strategy, a change of control or other reasons;

 a
 collaboration partner may cease development in therapeutic areas which are the subject of our strategic collaboration;

 a
 collaboration partner may not devote sufficient capital or resources towards our product candidates;

 a
 collaboration partner may change the success criteria for a product candidate thereby delaying or ceasing development of such candidate;

 a
 significant delay in initiation of certain development activities by a collaboration partner will also delay payment of milestones
 tied to such activities, thereby impacting our ability to fund our own activities;

 a
 collaboration partner could develop a product that competes, either directly or indirectly, with our product candidate;

 a
 collaboration partner with commercialization obligations may not commit sufficient financial or human resources to the marketing,
 distribution or sale of a product;

 a
 collaboration partner with manufacturing responsibilities may encounter regulatory, resource or quality issues and be unable to meet
 demand requirements;

 a
 collaboration partner may terminate a strategic alliance;

 a
 dispute may arise between us and a partner concerning the research, development or commercialization of a product candidate resulting
 in a delay in milestones, royalty payments or termination of an alliance and possibly resulting in costly litigation or arbitration
 which may divert management attention and resources; and

 a
 partner may use our products or technology in such a way as to invite litigation from a third party.

 There
is a risk that a collaboration partner might fail to perform its obligations under the collaborative arrangements or may be slow in performing
its obligations. In addition, a collaboration partner may experience financial difficulties at any time that could prevent it from having
available funds to contribute to the collaboration. If a collaboration partner fails to conduct its product development, commercialization,
regulatory compliance, sales and marketing or distribution activities successfully and in a timely manner, or if it terminates or materially
modifies its agreements with us, the development and commercialization of one or more product candidates could be delayed, curtailed,
or terminated because we may not have sufficient financial resources or capabilities to continue such development and commercialization
on our own.

 We
have no marketing, sales, or distribution resources for the commercialization of any products or technologies that we might successfully
develop.

 We
do not have any infrastructure for the sales, marketing or distribution of our products, and the cost of establishing and maintaining
such an organization may exceed the cost-effectiveness of doing so. There are significant expenses and risks involved with establishing
our own sales, marketing and distribution capabilities, including our ability to hire, retain and appropriately incentivize qualified
individuals, generate sufficient sales leads, provide adequate training to sales and marketing personnel, and effectively manage a geographically
dispersed sales and marketing team. Any failure or delay in the development of our internal sales, marketing and distribution capabilities
could delay any product launch, which would adversely impact the commercialization of any approved product candidate.

 If
we market products through arrangements with third parties, we may pay sales commissions to sales representatives or we may sell or consign
products to distributors at wholesale prices. As a result, our gross profit from product sales may be lower than it would be if we were
to sell our products directly to end users at retail prices through our own sales force. There can be no assurance we will be able to
negotiate distribution or sales agreements with third parties on favorable terms to justify our investment in our products or achieve
sufficient revenues to support our operations.

 If
we are unable to build our own sales force or negotiate a collaborative relationship for the commercialization of our product candidates,
we may be forced to delay the potential commercialization of such candidates or reduce the scope of our sales or marketing activities
for them. If we elect to increase our expenditures to fund commercialization activities ourselves, we will need to obtain additional
capital, which may not be available to us on acceptable terms, or at all. We could enter into arrangements with collaborative partners
at an earlier stage than otherwise would be ideal and we may be required to relinquish rights to our product candidates or otherwise
agree to terms unfavorable to us, any of which may have an adverse effect on our business, operating results and prospects.

 If
we are unable to establish adequate sales, marketing and distribution capabilities, either on our own or in collaboration with third
parties, we will not be successful in commercializing our product candidates and may not become profitable and may incur significant
additional losses. We will be competing with many companies that currently have extensive and well-funded marketing and sales operations.
Without an internal team or the support of a third party to perform marketing and sales functions, we may be unable to compete successfully
against these more established companies.

 We
do not have the ability to independently conduct clinical trials required to obtain regulatory approvals for our product candidates and
intend to rely on third parties to conduct, supervise and monitor our clinical trials.

 We
will need to rely on third parties, such as contract research organizations, data management companies, contract clinical research associates,
medical institutions, clinical investigators and contract laboratories to conduct any clinical trials that we may undertake for our product
candidates. We may also rely on third parties to assist with our preclinical development of product candidates.

 If
we outsource clinical trials, we may be unable to directly control the timing, conduct and expense of our clinical trials. However, we
will remain responsible for ensuring that each of our studies is conducted in accordance with the applicable protocol, legal, regulatory
and scientific standards and our reliance on the CROs does not relieve us of our regulatory responsibilities.

 We
and our third-party contractors will be required to comply with the good laboratory practices (GLPs) and GCPs, which are regulations
and guidelines enforced by the FDA and are also required by the competent authorities of the member states of the European Economic Area
(EEA) and comparable foreign regulatory authorities in the form of International Conference on Harmonization guidelines for any of our
product candidates that are in preclinical and clinical development. The regulatory authorities enforce GCPs through periodic inspections
of trial sponsors, principal investigators and clinical trial sites. If we or our third-party contractors fail to comply with GCPs, the
clinical data generated in our clinical trials may be deemed unreliable and the FDA or comparable foreign regulatory authorities may
require us to perform additional clinical trials before approving our marketing applications. We cannot assure you that upon inspection
by a given regulatory authority, such regulatory authority will determine that any of our clinical trials comply with GCP regulations.
In addition, our clinical trials must be conducted with product produced under cGMP regulations. Accordingly, if our third-party contractors
fail to comply with these regulations or fail to recruit a sufficient number of subjects, we may be required to repeat clinical trials,
which would delay the regulatory approval process.

 Our
third-party contractors will not be our employees, and we will not control whether or not they devote sufficient time and resources to
our future clinical and nonclinical programs. These third-party contractors may also have relationships with other commercial entities,
including our competitors, for whom they may also be conducting clinical trials, or other product development activities which could
harm our competitive position. We face the risk of potential unauthorized disclosure or misappropriation of our intellectual property
by third-party contractors, which may reduce our trade secret protection and allow our potential competitors to access and exploit our
proprietary technology. If our third-party contractors do not successfully carry out their contractual duties or obligations, fail to
meet expected deadlines, or if the quality or accuracy of the clinical data they obtain is compromised due to the failure to adhere to
our clinical protocols or regulatory requirements or for any other reasons, our clinical trials may be extended, delayed or terminated,
and we may not be able to obtain regulatory approval for, or successfully commercialize any product candidate that we develop. As a result,
our financial results and the commercial prospects for any product candidate that we develop would be harmed, our costs could increase,
and our ability to generate revenues could be delayed.

 If
our relationship with any third-party contractors terminates, we may not be able to enter into arrangements with alternative third-party
contractors or do so on commercially reasonable terms. Switching or adding additional third-party contractors involves substantial cost
and requires management time and focus. In addition, there is a natural transition period when a new third party commences work. As a
result, delays occur, which can materially impact our ability to meet our desired clinical development timelines. Though we intend to
carefully manage our relationships with our third-party contractors, there can be no assurance that we will not encounter challenges
or delays in the future or that these delays or challenges will not have an adverse impact on our business, financial condition and prospects.

 Risks
Related to Intellectual Property

 If
we are unable to obtain and enforce patents and to protect our trade secrets, others could use our technology to compete with us, which
could limit opportunities for us to generate revenues by licensing our technology and selling our products.

 Our
 success will depend in part on our ability to obtain and enforce patents and maintain trade secrets in the United States and in other
 countries. If we are unsuccessful in obtaining and enforcing patents, our competitors could use our technology and create products
 or technologies that compete with our products and technologies, without paying license fees or royalties to us.

 The
 preparation, filing, and prosecution of patent applications can be costly and time consuming. Our limited financial resources may
 not permit us to pursue patent protection of all of our technology and products throughout the world.

 Even
 if we are able to obtain issued patents covering our technology or products, we may have to incur substantial legal fees and other
 expenses to enforce our patent rights in order to protect our technology and products from infringing uses. We may not have the financial
 resources to finance the litigation required to preserve our patent and trade secret rights.

 There
is no certainty that our pending or future patent applications will result in the issuance of patents.

 We
acquired rights to patent applications for technology that Lineage has developed, and we may file additional new patent applications
in the future seeking patent protection for new technology or products that we develop ourselves or jointly with others. However, there
is no assurance that any of our licensed patent applications, or any patent applications that we may file in the future in the United
States or abroad, will result in the issuance of patents.

 The
process of applying for and obtaining patents can be expensive and slow.

 The
 preparation and filing of patent applications, and the maintenance of patents that are issued, may require substantial time and money.

 A
 patent interference proceeding may be instituted with the U.S. Patent and Trademark Office (the USPTO) when more than one person
 files a patent application covering the same technology, or if someone wishes to challenge the validity of an issued patent. At the
 completion of the interference proceeding, the USPTO will determine which competing applicant is entitled to the patent, or whether
 an issued patent is valid. Patent interference proceedings are complex, highly contested legal proceedings, and the USPTO's
 decision is subject to appeal. This means that if an interference proceeding arises with respect to any of our patent applications,
 we may experience significant expenses and delay in obtaining a patent, and if the outcome of the proceeding is unfavorable to us,
 the patent could be issued to a competitor rather than to us.

 A
 derivation proceeding may be instituted by the USPTO or an inventor alleging that a patent or application was derived from the work
 of another inventor.

 Post
 Grant Review under the new Leahy Smith America Invents Act (America Invents Act) will make available opposition-like proceedings
 in the United States. As with the USPTO interference proceedings, Post Grant Review proceedings will be very expensive to contest
 and can result in significant delays in obtaining patent protection or can result in a denial of a patent application.

 Oppositions
 to the issuance of patents may be filed under European patent law and the patent laws of certain other countries. As with USPTO interference
 proceedings, these foreign proceedings can be very expensive to contest and can result in significant delays in obtaining a patent
 or can result in a denial of a patent application.

 Intellectual
property we may develop using grants received from the federal government are subject to rights maintained by the government.

and development we perform that is funded by grants from the federal government, and any intellectual property that we create using those
grants, is subject to the rights maintained by the federal government.

 Our
patents may not protect our technologies or products from competition.

 We
 might not be able to obtain any patents beyond those we already own or have licensed or sublicensed, and any patents that we do obtain
 might not be comprehensive enough to provide us with meaningful patent protection.

 There
 will always be a risk that our competitors might be able to successfully challenge the validity or enforceability of any patent issued
 to us.

 In
 addition to interference proceedings, the USPTO can reexamine issued patents at the request of a third party. Our patents may be
 subject to inter partes review (replacing the reexamination proceeding), a proceeding in which a third party can challenge the validity
 of one of our patents to have the patent invalidated. This means that patents owned or licensed by us may be subject to reexamination
 and may be lost if the outcome of the reexamination is unfavorable to us.

 The
 patents to which we have licenses to in overlapping fields of use. AgeX, through our subsidiary ReCyte Therapeutics, is a sublicensee
 under a cross-license between Lineage and Asterias, which creates another potential risk of Asterias and AgeX creating competing
 products.

 We
may not be able to enforce our intellectual property rights throughout the world.

 Filing,
prosecuting and defending patents, if issued, on our technology and product candidates in all countries throughout the world would be
prohibitively expensive. The requirements for patentability may differ in certain countries, particularly in developing countries. Competitors
may use our technologies in jurisdictions where we have not obtained patent protection to develop their own products and, further, may
export otherwise infringing products to territories where we may obtain patent protection, but where patent enforcement is not as strong
as that in the United States. The products offered by foreign competitors may compete with our products in jurisdictions where we do
not have any issued or licensed patents or where any future patent claims or other intellectual property rights may not be effective
or sufficient to prevent them from competing with us.

our ability to protect and enforce our intellectual property rights may be adversely affected by unforeseen changes in foreign intellectual
property laws. Additionally, laws of some countries outside of the United States and the EU do not afford intellectual property protection
to the same extent as the laws of the United States and the EU. Many companies have encountered significant problems in protecting and
defending intellectual property rights in certain foreign jurisdictions. The legal systems of some countries, including India, China
and certain developing countries, do not favor the enforcement of patents and other intellectual property rights. This could make it
difficult for us to stop the infringement of our patents or the misappropriation of our other intellectual property rights. For example,
many foreign countries have compulsory licensing laws under which a patent owner must grant licenses to third parties. Consequently,
we may not be able to prevent third parties from practicing our inventions in certain countries outside the United States and the EU.
Competitors may use our technologies in jurisdictions where we have not obtained patent protection to develop their own products and,
further, may export otherwise infringing products to territories where we have patent protection, if our ability to enforce our patents
to stop infringing activities is inadequate. These products may compete with our products, and our patents, if issued, or other intellectual
property rights may not be effective or sufficient to prevent them from competing.

 Proceedings
to enforce our patent rights in foreign jurisdictions, whether or not successful, could result in substantial costs and divert our efforts
and resources from other aspects of our business. Furthermore, while we intend to protect our intellectual property rights in major markets,
we cannot ensure that we will be able to initiate or maintain similar efforts in all jurisdictions in which we may wish to market products
or license our patented technologies. Accordingly, our efforts to protect our intellectual property rights in such countries may be inadequate.

 We
may be subject to patent infringement claims that could be costly to defend, which may limit our ability to use disputed technologies,
and which could prevent us from pursuing research and development or commercialization of some of our technologies or products, require
us to pay licensing fees to have freedom to operate and/or result in monetary damages or other liability for us.

 The
success of our business depends significantly on our ability to operate without infringing patents and other proprietary rights of others.
If the technology that we use infringes a patent held by others, we could be sued for monetary damages by the patent holder or its licensee,
or we could be prevented from continuing research, development, and commercialization of technologies and products that rely on that
technology, unless we are able to obtain a license to use the patent. The cost and availability of a license to a patent cannot be predicted,
and the likelihood of obtaining a license at an acceptable cost would be lower if the patent holder or any of its licensees is using
the patent to develop or market a technology or product with which our technologies or products would compete. If we could not obtain
a necessary license, we would need to develop or obtain rights to alternative technologies, which could prove costly and could cause
delays in developing our technologies or products, or we could be forced to discontinue the development or marketing of any technologies
and products that were developed using the technology covered by the patent.

 Risks
Related to AgeX Common Stock

 There
is a limited history to the public trading of AgeX common stock and there is no assurance that a market for AgeX common stock will be
sustained.

 Public
trading of AgeX common stock on the NYSE American began on November 29, 2018. Accordingly, there is only a limited history of the public
trading of AgeX common stock and there can be no assurance that an active market for AgeX common stock will be sustained.

 We
cannot predict the prices at which AgeX common stock may trade. The market price of AgeX common stock may fluctuate significantly, depending
upon many factors, some of which may be beyond our control, including, but not limited to:

 a
 shift in our investor base;

 the
 impact of the Reverse Stock Split;

 our
 quarterly or annual earnings, or those of comparable companies;

 actual
 or anticipated fluctuations in our operating results;

 our
 ability to obtain financing as needed;

 in laws and regulations affecting our business;

 in accounting standards, policies, guidance, interpretations or principles;

 announcements
 by us or our competitors of significant investments, acquisitions or dispositions;

 the
 failure of securities analysts to cover AgeX common stock;

 in earnings estimates by securities analysts or our ability to meet those estimates;

 the
 operating performance and stock price of comparable companies;

 overall
 market fluctuations; and

 general
 economic conditions and other external factors.

we are engaged in the development of pharmaceutical and cell therapy products, the price of shares of AgeX common stock may rise and
fall rapidly.

 The
price of AgeX common stock may rise rapidly in response to certain events, such as the commencement of clinical trials of an experimental
new therapy, even though the outcome of those trials and the likelihood of ultimate FDA approval of a therapeutic product remain uncertain.
Similarly, prices of AgeX common stock may fall rapidly in response to certain events such as unfavorable results of clinical trials
or a delay or failure to obtain FDA approval. Further, the failure of our earnings to meet analysts' expectations could result
in a significant rapid decline in the market price of AgeX common stock.

we do not pay dividends, AgeX common stock may not be a suitable investment for anyone who needs to earn dividend income.

 We
do not have current plans to pay any cash dividends on AgeX common stock. The declaration, amount and payment of any future dividends
on shares of common stock will be at the sole discretion of the AgeX Board. The AgeX Board may take into account general and economic
conditions, our financial condition and results of operations, our available cash and current and anticipated cash needs, capital requirements,
contractual, legal, tax and regulatory restrictions and implications on the payment of dividends by us to our stockholders or by our
subsidiaries to us and such other factors as the AgeX Board may deem relevant. For the foreseeable future we anticipate that any earnings
generated in our business will be used to finance the growth of our business and will not be paid out as dividends to our stockholders.
This means that our stock may not be a suitable investment for anyone who needs to earn income from their investments.

 Securities
analysts may not initiate coverage or continue to cover AgeX common stock, and this may have a negative impact on the market price of
our shares.

 The
market price and liquidity of AgeX common stock will depend, in part, on the research and reports that securities analysts publish about
our business and AgeX common stock. We do not have any control over these analysts. There is no guarantee that securities analysts will
cover AgeX common stock. If securities analysts do not cover AgeX common stock, the lack of research coverage may adversely affect the
market price of those shares. If securities analysts do cover our shares, they could issue reports or recommendations that are unfavorable
to the price of our shares, and they could downgrade a previously favorable report or recommendation, and in either case our share price
could decline as a result of the report. If one or more of these analysts ceases to cover our shares or fails to publish regular reports
on our business, we could lose visibility in the financial markets, which could cause our share price or trading volume to decline.

 You
may experience dilution of your ownership interests if we issue additional shares of common stock or preferred stock.

 In
the future, we may issue our authorized but previously unissued equity securities, resulting in the dilution of the ownership interests
of our present stockholders. We are currently authorized to issue an aggregate of 205,000,000 shares of capital stock consisting of 200,000,000
shares of common stock and 5,000,000 "blank check" shares of preferred stock. As of March 14, 2024, there were 2,500,664
shares of AgeX common stock issued and outstanding, 82,206 shares of AgeX common stock reserved for issuance upon the exercise of
outstanding stock options or other stock-based awards under our 2017 Equity Incentive Plan, 1,500,284 shares reserved for issuance
upon the exercise of Post-Merger Warrants, 1,500,284 shares reserved for issuance upon the exercise of Incentive Warrants,
and 303,255 shares of AgeX common stock reserved for issuance upon the exercise of outstanding warrants held by Juvenescence.

 We
may issue additional AgeX common stock or other securities that are convertible into or exercisable for AgeX common stock in order to
raise additional capital, or in connection with hiring or retaining employees or consultants, or in connection with future acquisitions
of licenses to technology or medical products or for other business purposes. The future issuance of any additional shares of AgeX common
stock or other securities may create downward pressure on the trading price of AgeX common stock.

 We
may also issue additional preferred stock, and such preferred stock may have rights, preferences, and privileges senior to the rights
of AgeX common stock with respect to dividends, rights to share in distributions of our assets if we liquidate our company, or voting
rights. Any preferred stock may also be convertible into common stock on terms that would be dilutive to holders of common stock.

 Our
subsidiaries may finance a portion of their operations by selling shares of their capital stock or debt securities convertible into shares
of their capital stock to private investors. Sales of subsidiary shares would reduce our ownership interest in the subsidiaries, and
correspondingly dilute our shareholder's ownership interests in our consolidated enterprise. Reverse Bio has, and other AgeX subsidiaries
could also have, their own stock option plans and the exercise of subsidiary stock options or the sale of restricted stock under those
plans would also reduce our ownership interest in the subsidiaries, with a resulting dilutive effect on the ownership interest of our
shareholders in our consolidated enterprise. Subsidiaries might also issue preferred stock having rights, preferences, and privileges
senior to the rights of the subsidiary common stock we hold with respect to dividends, rights to share in distributions of our assets
if the subsidiary is liquidated, or voting rights. Any subsidiary preferred stock may also be convertible into common stock on terms
that would be dilutive to us as a holder of subsidiary common stock.

 We
are an "emerging growth company," and may elect to comply with reduced public company reporting requirements applicable to
emerging growth companies, which could make AgeX common stock less attractive to investors.

 We
are an "emerging growth company," as defined in the JOBS Act, and we may take advantage of certain exemptions from various
reporting requirements that are applicable to other public companies that are not "emerging growth companies" including reduced
disclosure obligations regarding executive compensation in our periodic reports and proxy statements, and exemptions from the requirements
of holding a nonbinding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously
approved. We cannot predict if investors will find AgeX common stock less attractive because we may rely on these exemptions. If some
investors find AgeX common stock less attractive as a result, there may be a less active trading market for AgeX common stock and our
stock price may be more volatile. We may take advantage of these reporting exemptions until we are no longer an "emerging growth
company." We will remain an "emerging growth company" until the earliest of (i) the last day of the fiscal year in
which we have total annual gross revenues of $1.07 billion or more; (ii) the last day of the fiscal year following the fifth anniversary
of the date of the first sale of our common equity securities pursuant to an effective registration statement under the Securities Act
of 1933, as amended (the Securities Act); (iii) the date on which we have issued more than $1.0 billion in nonconvertible debt during
the previous three years; or (iv) the date on which we are deemed to be a "large accelerated filer" under the Securities
Exchange Act of 1934, as amended (the Exchange Act).

 We
could be subject to securities class action litigation.

 In
the past, securities class action litigation has often been brought against a company following a decline in the market price of its
securities. This risk is especially relevant for us because biopharmaceutical companies have experienced significant stock price volatility
in recent years. If we face such litigation, it could result in substantial costs and a diversion of management's attention and
resources, which could harm our business.

 Provisions
in AgeX's Certificate of Incorporation (the "AgeX Charter") and AgeX's Bylaws and under Delaware law could make
an acquisition of our company, which may be beneficial to our stockholders, more difficult and may prevent attempts by our stockholders
to replace or remove our current management.

 Provisions
in the AgeX Charter and AgeX's Bylaws may discourage, delay or prevent a merger, acquisition or other change in control of our
company that stockholders may consider favorable, including transactions in which you might otherwise receive a premium for your shares.
These provisions could also limit the price that investors might be willing to pay in the future for shares of AgeX common stock, thereby
depressing the market price of AgeX common stock. In addition, because the AgeX Board is responsible for appointing the members of our
management team, these provisions may frustrate or prevent any attempts by our stockholders to replace or remove our current management
by making it more difficult for stockholders to replace members of the AgeX Board. Among other things, these provisions include those
establishing:

 no
 cumulative voting in the election of directors, which limits the ability of minority stockholders to elect director candidates;

 the
 ability of the AgeX Board to authorize the issuance of shares of preferred stock and to determine the terms of those shares, including
 preferences and voting rights, without stockholder approval, which could be used to significantly dilute the ownership of a hostile
 acquirer; and

 the
 ability of the AgeX Board to alter our bylaws without obtaining stockholder approval.

because we are incorporated in Delaware, we are governed by the provisions of Section 203 of the DGCL, which prohibits a person who owns
in excess of 15% of our outstanding voting stock from merging or combining with us for a period of three years after the date of the
transaction in which the person acquired in excess of 15% of our outstanding voting stock, unless the merger or combination is approved
in a prescribed manner.

 Item
1B. Unresolved Staff Comments

 Not
Applicable.

 Item
1C. Cybersecurity

 We
have implemented cybersecurity measures and processes to address and mitigate material risks from cybersecurity threats. We utilize the
services of third party providers to develop, maintain, and implement cybersecurity systems and measures designed to protect our information
systems from unauthorized access and damage. AgeX security measures are periodically assessed, tested, and updated. We do not have employees
with information technology or cybersecurity expertise and accordingly we obtain an assessment of our cybersecurity systems and measures
from a third party provider different from the provider that is primarily responsible for installation, update, and maintenance of information
technology and cyber security systems. Our information technology and cybersecurity service providers primarily interface with members
of our accounting and finance group. These processes are an integral part of our internal controls and risk management and the results
of the third party assessment are reported annually to the Audit Committee along with a report from management on the effectiveness of
internal controls.

 We
are not aware of the occurrence of any cybersecurity incidents that have materially affected or are reasonably likely to materially affect
our business strategy, results of operations, or financial condition. However, there can be no assurance that material cybersecurity
incidents will not arise or be discovered in the future.

 Item
2. Properties

 Our
principal place of business is located at 1101 Marina Village Parkway, Suite 201, Alameda, California which we use for office purposes.

 Item
3. Legal Proceedings

 AgeX
may from time to time be a party to litigation and subject to claims incident to the ordinary course of business. In the future, AgeX
may become a party to an increasing number of litigation matters and claims, including in connection with Merger Agreement and the transactions
contemplated thereby. The outcome of litigation and claims cannot be predicted with certainty, and the resolution of these matters could
materially affect AgeX's future results of operations, cash flows or financial position.

 On
December 11, 2023, a purported stockholder of AgeX, filed a putative shareholder class action and derivative lawsuit in the Superior
Court of the State of California, County of Alameda, captioned Buttner, et al. v. AgeX Therapeutics, Inc., et al., Case No. 23CV057083
(the Buttner Complaint). The Buttner Complaint names AgeX, the AgeX Board, an officer of AgeX, Juvenescence Limited and Juvenescence
US Corp. as defendants. The Buttner Complaint alleges direct claims against the individual defendants for breaches of fiduciary duty
in connection with their approval of the Merger and disclosures made by AgeX in connection therewith and, in the alternative, alleges
derivative claims, purportedly on behalf of AgeX, against the individual defendants for such alleged breaches of fiduciary duty. The
Buttner Complaint also alleges direct and derivative claims against Juvenescence Limited, Juvenescence US Corp., and one member of the
AgeX Board for breaches of fiduciary duty as alleged controlling stockholders of AgeX. On February 29, 2024, the plaintiff filed a request
for dismissal of the action without prejudice and on March 5, 2024 the court entered an order dismissing the action per the plaintiff's
request.

 Item
4. Mine Safety Disclosures

 Not

 PART
II

 Item
5. Market for Registrant's Common Equity, Related Stockholder Matters, and Issuer Purchases of Equity Securities

 Our
common stock has been traded on the NYSE American under the symbol "AGE" since November 29, 2018.

 As
of March 12, 2024, we had 228 holders of record of our common stock. This number does not include stockholders whose shares of AgeX common
stock are held in "street name" in accounts with securities broker-dealers or other financial institutions or fiduciaries.

 The
following table shows certain information concerning the stock options outstanding and available for issuance under all of our compensation
plans and agreements as of December 31, 2023 (in thousands, except weighted average exercise price):

 Plan Category

 to be Issued upon
 Exercise of
 Outstanding
 Options and Rights

 Weighted Average
 Exercise Price
 of the Outstanding
 Options and Rights

 Remaining Available
 for Future Issuance
 under Equity
 Compensation Plans

 AgeX Stock Option Plans Approved by Stockholders (1)

 $
 80.28

 (1)
 This
 information pertains to our 2017 Equity Incentive Plan. Additional information concerning
 our 2017 Equity Incentive Plan and the stock options may be found in Note 8, Stock-Based
 Awards to the consolidated financial statements included elsewhere in this Report.

 Item
6. Reserved

 Not

 Item
7. Management's Discussion and Analysis of Financial Condition and Results of Operations

 The
following Management's Discussion and Analysis of Financial Condition and Results of Operations is intended to provide information
necessary to understand our audited consolidated financial statements for the years ended December 31, 2023 and 2022, and highlight certain
other information which, in the opinion of management, will enhance a reader's understanding of our financial condition, changes
in financial condition and results of operations. These historical financial statements may not be indicative of our future performance.
In particular, our future business focus and operations will be substantially different than our historical business focus and operations
if the Merger is consummated. See "IMPORTANT PRELIMINARY NOTE — Planned Merger with Serina Therapeutics, Inc. and Related
Transactions." This Management's Discussion and Analysis of Financial Condition and Results of Operations contains a number
of forward-looking statements, all of which are based on our current expectations not taking the Merger into account and will be affected
by the Merger if it is consummated and by uncertainties and risks described throughout this filing, particularly in "Risk Factors."

 Emerging
Growth Company Status

 The
Jumpstart Our Business Startups Act of 2012 ("JOBS Act") permits an "emerging growth company" such as AgeX to
take advantage of an extended transition period to comply with new or revised accounting standards applicable to public companies. However,
we elected to comply with newly adopted or revised accounting standards when they become applicable to public. This election under the
JOBS Act to not delay the adoption of new or revised accounting standards is irrevocable.

 Overview

 We
are a biotechnology company focused on the development and commercialization of novel therapeutics targeting human aging and degenerative
diseases. Our initial discovery and preclinical programs focus on utilizing brown adipose tissue in targeting diabetes, obesity, and
heart disease; and induced tissue regeneration in utilizing the human body's own abilities to scarlessly regenerate tissues damaged
from age or trauma. We may also pursue other early-stage pre-clinical programs.

 Since
inception, our operations have focused on building our technology platform, identifying potential product candidates, establishing and
protecting our intellectual property and raising capital.

 Since
inception, we have incurred significant operating losses and we will need to obtain additional financing in order to continue our operations,
including our research and development programs. See "Liquidity and Capital Resources" for a discussion of our available
capital resources and our need for financing. Our net loss from operations before interest and other expenses were $9.9 million and $7.0
million for the years ended December 31, 2023 and 2022, respectively. As of December 31, 2023, we had an accumulated deficit of $131.0
million. We expect to continue to incur operating losses and negative cash flows for the foreseeable future.

 The
following discussion and analysis of AgeX's financial condition and results of operations and liquidity and capital resources does
not reflect material changes to AgeX's business, assets, liabilities, financial condition, operations, management, liquidity, capital
resources, and prospects that will occur if the Merger is consummated.

 Critical
Accounting Estimates

 The
preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of
America ("US GAAP"), requires management to make estimates and assumptions that affect the reported amounts in our consolidated
financial statements and related notes. Our significant accounting policies are described in Note 2, Summary of Significant Accounting
Policies to our consolidated financial statements included elsewhere in this Report. We have identified below our critical accounting
policies and estimates that we believe require the greatest amount of judgment. On an ongoing basis, we evaluate our estimates that are
subject to significant judgment, including those related to going concern assessment of consolidated financial statements, allocations
and adjustments necessary for carve-out basis of presentation, including the separate return method for income taxes, useful lives associated
with long-lived assets, including evaluation of asset impairment, loss contingencies,
deferred income taxes and tax reserves, including valuation allowances related to deferred income taxes, and assumptions used to value
stock-based awards or other equity instruments and liability classified warrants. Actual results could differ materially from those estimates.
On an ongoing basis, we evaluate our estimates compared to historical experience and trends, which form the basis for making judgments
about the carrying value of assets and liabilities. To the extent that there are material differences between our estimates and our actual
results, our future consolidated financial statement presentation, financial condition, results of operations and cash flows will be
affected.

 We
believe the assumptions and estimates associated with the following have the greatest potential impact on our consolidated financial
statements. There were no significant changes to the disclosures with respect to our critical accounting policies for the years ended
December 31, 2023 and 2022.

 Going
Concern Assessment

 We
assess going concern uncertainty for our consolidated financial statements to determine if we have sufficient cash and cash equivalents
on hand and working capital to operate for a period of at least one year from the date our consolidated financial statements are issued,
which is referred to as the "look-forward period" as defined by FASB's ASU No. 2014-15. As part of this assessment,
based on conditions that are known and reasonably knowable to us, we consider various scenarios, forecasts, projections, and estimates,
and we make certain key assumptions, including the timing and nature of projected cash expenditures or programs, among other factors,
and our ability to delay or curtail those expenditures or programs within the look-forward period in accordance with ASU No. 2014-15,
if necessary.

 Principles
of Consolidation

 The
consolidated financial statements include the accounts of AgeX and its subsidiaries in which AgeX has a controlling financial interest.
The consolidated financial statements also include certain variable interest entities in which AgeX is the primary beneficiary (as described
in more detail below). For consolidated entities where AgeX has less than 100% of ownership, AgeX records net loss attributable to noncontrolling
interest on the consolidated statement of operations equal to the percentage of the ownership interest retained in such entities by the
respective noncontrolling parties. The noncontrolling interest is reflected as a separate element of stockholders' equity/(deficit)
on AgeX's consolidated balance sheets. Any material intercompany transactions and balances have been eliminated upon consolidation.

 AgeX
assesses whether it is the primary beneficiary of a variable interest entity ("VIE") at the inception of the arrangement
and at each reporting date. This assessment is based on its power to direct the activities of the VIE that most significantly impact
the VIE's economic performance and AgeX's obligation to absorb losses or the right to receive benefits from the VIE that
could potentially be significant to the VIE. If the entity is within the scope of the variable interest model and meets the definition
of a VIE, AgeX considers whether it must consolidate the VIE or provide additional disclosures regarding its involvement with the VIE.
If AgeX determines that it is the primary beneficiary of the VIE, AgeX will consolidate the VIE. This analysis is performed at the initial
investment in the entity or upon any reconsideration event. For entities AgeX holds as an equity investment that are not consolidated
under the VIE model, AgeX will consider whether its investment constitutes a controlling financial interest in the entity and therefore
should be considered for consolidation under the voting interest model.

 AgeX
has four subsidiaries, Reverse Bio, ReCyte Therapeutics, Inc. ("ReCyte"), NeuroAirmid Therapeutics, Inc.
("NeuroAirmid"), Canaria Transaction Corporation ("Merger Sub"), and has incorporated but not yet
capitalized a fifth subsidiary UniverXome Bioengineering, Inc.("UniverXome"). Reverse Bio is a wholly owned subsidiary
of AgeX through which AgeX plans to finance its iTR TM research and development efforts. AgeX has been seeking equity
financing for Reverse Bio and to the extent that such Reverse Bio financing is obtained through the sale of capital stock or
other equity securities by Reverse Bio, AgeX's equity interest in Reverse Bio and its iTR TM business would be
diluted. ReCyte is an early stage pre-clinical research and development company involved in stem cell-derived endothelial and
cardiovascular related progenitor cells for the treatment of vascular disorders and ischemic conditions. AgeX owns 94.8% of the
outstanding capital stock of ReCyte. NeuroAirmid is jointly owned by AgeX with the University of California – Irvine and
certain researchers and was recently organized to pursue clinical development and commercialization of cell therapies, focusing
initially on Huntington's Disease. AgeX owns 50% of the outstanding capital stock of NeuroAirmid. AgeX consolidates
NeuroAirmid despite not having majority ownership interest as it has the ability to influence decision making and financial results
through contractual rights and obligations as per Accounting Standards Codification ("ASC") 810, Consolidation.
Merger Sub was incorporated for the purpose of merging with Serina to implement the Merger. UniverXome is expected, in
connection with the planned Merger, to hold certain AgeX assets and assume AgeX indebtedness obligations to
Juvenescence.

 Long-Lived
Intangible Assets

 Long-lived
intangible assets, consisting primarily of acquired patents, acquired in-process research and development ("IPR&D") with
alternative future uses, patent applications, and licenses to use certain patents, are stated at acquired cost, less accumulated amortization.
Amortization expense is computed using the straight-line method over the estimated useful lives of the assets, generally over 10 years.

 Impairment
of Long-Lived Assets

 Long-lived
assets, including long-lived intangible assets, are reviewed for impairment whenever events or changes in circumstances indicate that
the carrying amount of an asset may not be fully recoverable. If an impairment indicator is present, we evaluate recoverability by a
comparison of the carrying amount of the assets to future undiscounted net cash flows expected to be generated by the assets. If the
assets are impaired, the impairment recognized is measured by the amount by which the carrying amount exceeds the estimated fair value
of the assets. As of December 31, 2023, there have been no such impairment losses.

 Accounting
for Warrants

 We
determine the accounting classification of warrants we issue, as either liability or equity, by first assessing whether the warrants
meet liability classification in accordance with ASC 480-10, Accounting for Certain Financial Instruments with Characteristics of
both Liabilities and Equity, then in accordance with ASC 815-40, Accounting for Derivative Financial Instruments Indexed to, and
Potentially Settled in, a Company's Own Stock. Under ASC 480, warrants are considered liability classified if the warrants
are mandatorily redeemable, obligate us to settle the warrants or the underlying shares by paying cash or other assets, and warrants
that must or may require settlement by issuing a variable number of shares. If warrants do not meet the liability classification under
ASC 480-10, we assess the requirements under ASC 815-40, which states that contracts that require or may require the issuer to settle
the contract for cash are liabilities recorded at fair value, irrespective of the likelihood of the transaction occurring that triggers
the net cash settlement feature. If the warrants do not require liability classification under ASC 815-40, in order to conclude equity
classification, we also assess whether the warrants are indexed to our common stock and whether the warrants are classified as equity
under ASC 815-40 or other U.S. GAAP. After all such assessments, we conclude whether the warrants are classified as liability or equity.
Liability classified warrants require fair value accounting at issuance and subsequent to initial issuance with all changes in fair value
after the issuance date recorded in the statements of operations. Equity classified warrants only require fair value accounting at issuance
with no changes recognized subsequent to the issuance date. We do not have any liability classified warrants as of any period presented.
See Note 5, Related Party Transactions to our consolidated financial statements included elsewhere in this Report for additional
information regarding warrants.

 Stock-Based

 We
recognize compensation expense related to employee stock option grants and other equity based awards, if any, in accordance with FASB
ASC 718, Compensation – Stock Compensation ("ASC 718").

 We
use the Black-Scholes option pricing model for estimating the fair value of options granted under our 2017 Equity Incentive Plan (the
"Incentive Plan"). The fair value of each restricted stock or restricted stock unit grant, if any, is determined based on
the value of the common stock granted or sold. We have elected to treat stock-based awards with time-based service conditions as a single
award and recognize stock-based compensation on a straight-line basis over the requisite service period.

expense for non-employee stock-based awards is recognized in accordance with ASC 718. Stock option awards issued to non-employees, principally
consultants or outside contractors, as applicable, are accounted for at fair value using the Black-Scholes option pricing model. Management
believes that the fair value of the stock options can more reliably be measured than the fair value of services received. We record compensation
expense based on the then-current fair values of the stock options at the grant date in accordance with ASU 2018-07, Compensation
– Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting, which simplifies the accounting
for non-employee share-based payment transactions. We adopted ASU 2018-07 on January 1, 2019. As we had one stock option grant issued
to a nonemployee as of the adoption date and one additional stock option grant during 2019 to the same nonemployee, the application of
the new standard did not have a material impact on our consolidated financial statements. Compensation expense for non-employee grants
is recorded on a straight-line basis in the consolidated statements of operations.

 The
Black-Scholes option pricing model requires us to make certain assumptions including the fair value of the underlying common stock, the
expected term, the expected volatility, the risk-free interest rate and the dividend yield.

 The
fair value of the shares of common stock underlying the stock options has historically been determined by our Board of Directors. Because
there was no public market for our common stock prior to November 29, 2018, our Board of Directors determined the fair value of the common
stock at the time of the grant of options prior to that date by considering a number of objective and subjective factors including contemporaneous
sales of our common stock to investors, valuation of comparable companies, operating and financial performance and general and industry-specific
economic outlook, amongst other factors. The fair value was determined in accordance with applicable elements of the practice aid issued
by the American Institute of Certified Public Accountants titled Valuation of Privately Held Company Equity Securities Issued as Compensation.
Since our common stock began publicly trading on the NYSE American, the fair value of our common stock underlying stock options has been
valued based on prevailing market prices.

 The
expected term of employee stock options represents the weighted-average period that the stock options are expected to remain outstanding.
We estimate the expected term of options granted based upon the "simplified method" provided under Staff Accounting Bulletin,
Topic 14, or SAB Topic 14.

our common stock had no publicly traded history prior to November 29, 2018, for the years ended December 31, 2023 and 2022, we estimated
the expected volatility using our own stock price volatility to the extent applicable or a combination of our stock price volatility
and the stock price volatility of peer companies, for a period equal to the expected term of the options. The peer companies used include
selected public companies within the biotechnology industry with comparable characteristics to AgeX, including similarity in size, lines
of business, market capitalization, revenue and financial leverage.

 The
risk-free interest rate assumption is based upon observed interest rates on the United States government securities appropriate for the
expected term of our stock options.

 The
dividend yield assumption is based on our history and expectation of dividend payouts. We have never declared or paid any cash dividends
on our common stock, and we do not anticipate paying any cash dividends in the foreseeable future.

 All
excess tax benefits and tax deficiencies from stock-based compensation awards accounted for under ASC 718 are recognized as an income
tax benefit or expense, respectively, in the consolidated statements of operations. An excess income tax benefit arises when the tax
deduction of a share-based award for income tax purposes exceeds the compensation cost recognized for financial reporting purposes, and
a tax deficiency arises when the compensation cost exceeds the tax deduction.

 Stock-based
compensation expense for the years ended December 31, 2023 and 2022 consists of stock-based compensation under the Incentive Plan, and
stock-based compensation of AgeX's subsidiaries that have their own stock option plans.

 None
of our consolidated subsidiaries have granted stock options or other equity awards for the years ended December 31, 2023 and 2022.

 Although
the fair value of stock options is determined in accordance with FASB guidance, changes in the assumptions and allocations can materially
affect the estimated value and therefore the amount of compensation expense recognized in the consolidated financial statements.

 Income
Taxes

 As
of December 31, 2023, the deferred tax assets and liabilities presented in Note 9, Income Taxes included elsewhere in this Report,
including net operating loss carryforwards and research and development credits, represent the tax attributes of AgeX and its subsidiaries.

 We
account for income taxes in accordance with ASC 740, which prescribes the use of the asset and liability method, whereby deferred tax
asset or liability account balances are calculated at the balance sheet date using current tax laws and enacted rates in effect. Valuation
allowances are established when necessary to reduce deferred tax assets when it is more likely than not that a portion or all of the
deferred tax assets will not be realized. Our judgments, estimates and projections regarding future taxable income may change over time
due to changes, among other factors, in market conditions, changes in tax laws, and tax planning strategies. If our assumptions and consequently
our estimates change in the future, the valuation allowance may be increased or decreased, which may have a material impact on our consolidated
financial statements.

 The
guidance also prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement
of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more-likely-than-not
sustainable upon examination by taxing authorities. We provided a reserve against our federal and California research and development
credits generated. The carryforward amounts for these credits have been reported net of these reserves. Accordingly, no accrued interest
and penalties related to unrecognized tax benefits have been recorded as of December 31, 2023 and 2022. We do not expect that the total
amount of unrecognized tax benefits will materially change over the next twelve months. We are currently unaware of any tax issues under
review.

 Financial
Operations Overview

 We
do not have any therapeutic products approved for sale and have generated insignificant revenues from commercialized product sales, and
we do not expect to generate any significant revenues from product sales for the foreseeable future.

 Our
operating expenses consist of research and development expenses primarily from our pre-clinical programs and general and administrative
expenses. Since the layoffs of mostly research personnel in April 2020, research and development work have been scaled back and contracted
out to third party service providers within the newly imposed budgetary constraints under our loan agreements and promissory notes for
loans advanced to us by Juvenescence. Accordingly, the historical amounts of expense presented and discussed in this Report are likely
not going to be indicative of expenses during future periods.

 Results
of Operations

 Comparison
of Years Ended December 31, 2023 and 2022

 Revenues
and Cost of Sales

 The
amounts in the table below show our consolidated revenues by source and cost of sales for the years ended December 31, 2023 and 2022
(in thousands).

 $ +Increase/

 % +Increase/

 2023

 2022

 Grant revenues

 $

 $
 -

 $
 +77

 *
 %

 Other revenues

 +31

 *
 %

 Total revenues

 +108

 *
 %

 Cost of sales

 (40
)

 (13
)

 +27

 *
 %

 Gross profit

 $

 $

 $
 +81

 *
 %

 *%
fluctuation is not meaningful.

the year ended December 31, 2023, we recognized income of approximately $77,000 from a grant awarded by the NIH in August 2023 with a
one year grant period that commenced on September 1, 2023. During the year ended December 31, 2022, we did not recognize any grant revenues.

the years ended December 31, 2023 and 2022, we recognized $65,000 and $34,000, respectively, from the sale of research products. Revenues
from the sale of research products are included in other revenues.

 Operating
Expenses

 We
have maintained a minimal workforce since the May 1, 2020 reduction in force which resulted in the layoff of most of our research and
development personnel and certain administrative personnel. The following table shows our consolidated operating expenses for the years
ended December 31, 2023 and 2022 (in thousands).

 $ +Increase/

 % +Increase/

 2023

 2022

 Research and development expenses

 $

 $
 1,025

 $
 -291

 -28.4
 %

 General and administrative expenses

 9,328

 5,971

 +3,357

 +56.2%

and Development Expenses

and development expenses for the year ended December 31, 2023 decreased by approximately $0.3 million to $0.7 million as compared to
approximately $1.0 million in 2022. The net decrease was primarily attributable to reductions of $0.2 million in outside research and
services allocable to research and development expenses and $0.1 million in salaries and payroll related expenses allocated to research
and development expenses.

 Year Ended

 $ +Increase/

 % +Increase/

 2023

 2022

 iTR TM technology: AGEX-iTR1547 and AGEX-iTR1550

 $

 $

 $
 -178

 -51.7
 %

 PureStem progenitor cell lines, brown adipose fat, neural stem cells (NSC), exosomes, and related research and development: AGEX-BAT1 and cGMP PSC-derived cells including NSC

 -113

 -16.6
 %

 Total

 $

 $
 1,025

and Administrative Expenses

and administrative expenses for the year ended December 31, 2023 increased by $3.3 million to $9.3 million as compared to $6.0 million
in 2022. The net increase is attributable to increases of $2.5 million in professional fees for legal services, professional fees for
tax and accounting services, and consulting expenses incurred in connection with due diligence and other expenses related to the planned
Merger, $0.4 million for the write off of prepaid expenses incurred in prior periods related to a shelf registration statement for an
at-the-market offering of AgeX common stock that expired in January 2024, $0.4 million estimated litigation fees, $0.2 million in salaries,
consulting fees, and payroll related expenses, including severance related expenses arising under the Transition Services and Separation
Agreement with our former Chief Executive Officer, $0.1 million in investor relations related expenses, and $0.1 million in insurance
expense, allocated to general and administrative expenses. These increases were offset to some extent by a $0.2 million decrease in minimum
royalty fees resulting from the termination of certain license and sub-license agreements, $0.1 million net decrease in non-cash stock-based
compensation to employees, consultants and directors, and a $0.1 million decrease in patent and license maintenance related fees.

and administrative expenses include employee and director compensation allocated to general and administrative expenses, consulting fees
other than those paid for science-related consulting, facilities and equipment rent and maintenance related expenses, insurance costs
allocated to general and administrative expenses, stock exchange-related costs, depreciation expense, marketing costs, legal and accounting
costs, and other miscellaneous expenses which are allocated to general and administrative expense.

 Other
Expense, Net

 Other
expense, net in 2023 consists primarily of $5.4 million amortization of deferred debt issuance costs to interest expense, write off of
deferred debt cost upon $36 million debt exchanged for preferred stock in July 2023, and other debt related expenses included in interest
expense offset by $0.5 million net interest income primarily earned from the Serina Note. Other expense, net in 2022 consists primarily
of $3.3 million of amortization of deferred debt issuance costs on loans from Juvenescence to interest expense, and $0.2 million change
in fair value of warrants issued to Juvenescence in connection with borrowings under the 2022 Secured Note. See Notes 4, Convertible
Note Receivable, 5, Related Party Transactions, 6, Warrant Liability, and 7, Stockholders' Equity/(Deficit)
 to our consolidated financial statements included elsewhere in this Report for additional information about our loan agreement with
Serina, loan agreements with Juvenescence, liability classified warrants, and debt exchanged for preferred stock.

 Income
Taxes

 For
the year ended December 31, 2023, we experienced a loss; therefore, no income tax provision was recorded for the year ended December
31, 2023.

 As
of December 31, 2023, we had net operating loss carryforwards of approximately $59.7 million for U.S. federal income tax purposes. In
general, NOLs and other tax credit carryforwards generated by legal entities in a consolidated federal tax group are available to other
members of the tax group depending on the nature of the transaction that a member may enter into while still in the consolidated federal
tax group.

 As
of December 31, 2023, we had net operating losses of approximately $19.8 million for California purposes.

 Federal
net operating losses generated on or prior to December 31, 2017, expire in varying amounts between 2028 and 2037, while federal net operating
losses generated after December 31, 2017, carryforward indefinitely. The state net operating losses expire in varying amounts between
2028 and 2043.

 As
of December 31, 2023, we had research and development tax credit carryforwards for federal and state tax purposes of $0.7 million and
$0.5 million, respectively. The federal tax credits expire between 2028 and 2043, while the state tax credits have no expiration date.

 As
of December 31, 2023, we had capital loss carryforwards for federal and state tax purposes of $12.4 million and $5.9 million, respectively.
The federal and California capital loss carryforwards will expire in 2026.

 A
valuation allowance is provided when it is more likely than not that all or some portion of the deferred tax assets will not be realized.
We established a full valuation allowance for all periods presented due to the uncertainty of realizing future tax benefits from its
net operating loss carryforwards and other deferred tax assets.

 Liquidity
and Capital Resources

 Operating
Losses and Going Concern Considerations

 We
have incurred operating losses and negative cash flows since inception and had an accumulated deficit of $131.0 million as of December
31, 2023. We expect to continue to incur operating losses and negative cash flows. We have been funding our operations with loans from
Juvenescence. As of March 20, 2024, we had drawn down the entire $4,400,000 line of credit made available to us by Juvenescence
under the terms of the 2022 Secured Note. We do not have any other commitments for additional financing.

 We
have made certain adjustments to our operating plans and budgets to reduce our projected cash expenditures in order to extend the period
over which we can continue our operations with our available cash resources. These adjustments entailed down-sizing of our leased office
space effective January 1, 2021, a staff force reduction during 2020 primarily impacting research and development personnel, and the
elimination of our leased laboratory facility. These down-sizing adjustments to our operations will require the deferral of certain work
on the development of our product candidates and technologies. However, notwithstanding those adjustments, based on our most recent projected
cash flows, our cash and cash equivalents, the amount of the 2022 Secured Note line of credit available to us from Juvenescence would
not be sufficient to satisfy our anticipated operating and other funding requirements for the next twelve months from the date of filing
of this Report. These factors raise substantial doubt regarding our ability to continue as a going concern. See Note 5, Related Party
Transactions, to our consolidated financial statements included elsewhere in this Report for additional information about our loan
agreements with Juvenescence. We will need to raise additional capital in the near term to be able to meet our operating expenses.

 The
loans from Juvenescence that remain outstanding prohibit us and our subsidiaries ReCyte and Reverse Bio from borrowing funds from other
lenders or engaging in certain other transactions without the consent of Juvenescence unless we repay all amounts owed to Juvenescence.
AgeX and three of its subsidiaries have granted Juvenescence a security interest and lien on substantially all of their assets to secure
AgeX's obligations for the loans from Juvenescence that remain outstanding and any additional loans that may be advanced under
the 2022 Secured Note. The outstanding loan balances, and any future loans advanced, plus accrued loan fees, under the 2022 Secured Note
will become due and payable upon maturity on May 9, 2024. Certain accrued loan fees under the 2023 Secured Note, the principal amount
of which was converted into preferred stock, also remain payable to Juvenescence.

 July 2023, AgeX and Juvenescence entered into an Exchange Agreement pursuant to which AgeX
 issued to Juvenescence 211,600 shares of a newly authorized AgeX Series A Preferred Stock
 and 148,400 shares of a newly authorized AgeX Series B Preferred Stock in exchange for the
 cancellation of a total of $36,000,000 of indebtedness consisting of the outstanding principal
 amount of certain loans made by Juvenescence to AgeX and loan origination fees accrued with
 respect to those loans. On February 1, 2024, the shares of Series A Preferred Stock and Series
 B Preferred Stock automatically converted into a total of 1,421,666 shares of AgeX common
 stock in accordance with their terms and after that conversion no shares of AgeX Preferred
 Stock remained outstanding. Those shares of common stock issued to Juvenescence increased
 Juvenescence's direct and indirect holding of outstanding shares of AgeX common stock
 to 1,889,323 shares, or approximately 75.6% of the shares of common stock outstanding on
 March 14, 2024, including shares of AgeX common stock held by Juvenescence's subsidiaries
 but not taking into account any additional shares of AgeX common stock that Juvenescence
 may acquire through the conversion of loan balances and the exercise of AgeX common stock
 purchase warrants or the exercise of Post-Merger Warrants that were distributed by AgeX
 on March 19.

 Although
we have been able to reduce our operating expenses by eliminating internal research and development activities and focusing instead on
out-sourcing research and development and seeking licensing arrangements for our technologies, this approach has also made it more difficult
for us to make progress in developing our target product candidates and technologies, which in turn may make it more difficult for us
to raise capital. Further, the extent of Juvenescence's voting control over AgeX along with the amount and terms of AgeX's
indebtedness to Juvenescence and the impact of potential dilution through the issuance of shares of our common stock upon the conversion
of the Juvenescence loans into common stock and the exercise of common stock purchase warrants issued to Juvenescence in connection with
certain Juvenescence loans could make AgeX unattractive to new equity investors and could impair our ability to finance our operations
or the operations of our subsidiaries unless Juvenescence agrees, in its discretion, to lend us additional funds. The unavailability
or inadequacy of financing to meet future capital needs could force us to modify, curtail, delay, or suspend some or all aspects of our
planned operations.

 To
the extent that we are able to raise additional capital through the sale of AgeX equity or convertible debt securities or the sale of
equity or convertible debt securities of any of our subsidiaries, the ownership interest of our present stockholders will be diluted,
and the terms of any securities we or our subsidiaries issue may include liquidation or other preferences that adversely affect the rights
of our common stockholders. Additional debt financing, if available, may involve agreements that include covenants limiting or restricting
our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends, and may
involve the issuance of convertible debt or stock purchase warrants that would dilute the equity interests of our stockholders. If we
raise funds through additional strategic partnerships or licensing arrangements with third parties, we may have to relinquish valuable
rights to our technologies, future revenue streams, research programs or product candidates or to grant licenses on terms that may not
be favorable to us.

 Summary
of Cash Flows

 The
following table summarizes the major sources and uses of cash for the periods set forth below (in thousands):

 2023

 2022

 Net cash provided by (used in):

 Operating activities

 $
 (7,800
)

 $
 (5,939
)

 Investing activities

 (10,000
)

 -

 Financing activities

 17,500

 6,000

 Net change in cash, cash equivalents, and restricted cash

 $
 (300
)

 $

 Operating
Activities

 Net
loss attributable to us for the year ended December 31, 2023 amounted to $14.8 million. Net cash used in operating activities during
this period amounted to $7.8 million. The difference between the net loss attributable to us and net cash used in operating activities
during the year ended December 31, 2023 was primarily attributable to $5.4 million in amortization of intangible assets and deferred
debt issuance costs, $1.5 million in prepaid expenses and other current assets which included a $0.4 million write off of prepaid expenses
incurred in prior periods with respect to a shelf registration statement that expired in January 2024, $1.1 million in accounts payables
and accrued liabilities, $0.6 million in stock-based compensation expense, and $0.1 million in net related party payables. The impact
of these non-cash items was offset to some extent by a $1.1 million payment of a financed insurance premium liability and $0.6 million
in accrued interest on a convertible note receivable. See Notes 4, Convertible Note Receivable and 5, Related Party Transactions,
to our consolidated financial statements included elsewhere in this Report for additional information about our loan agreement with Serina
and our loan agreements with Juvenescence.

 Investing
Activities

the year ended December 31, 2023, net cash used by investing activities is entirely comprised of the $10 million loan made to Serina.
See Note 4, Convertible Note Receivable, to our consolidated financial statements included elsewhere in this Report for additional
information about the Serina Note.

 Financing
Activities

the year ended December 31, 2023, net cash provided by financing activities amounted to $17.5 million which was entirely attributable
to amounts drawn under the credit facilities from Juvenescence. See Notes 5, Related Party Transactions and 7, Stockholders'
Equity (Deficit), to our consolidated financial statements included elsewhere in this Report for additional information about our
loan agreements with Juvenescence.

 Off-Balance
Sheet Arrangements

 As
of December 31, 2023, we did not have any off-balance sheet arrangements, as defined in Item 303(a) (4) (ii) of SEC Regulation S-K.

 Item
7A. Quantitative and Qualitative Disclosures about Market Risk

 Not

 Item
8. Financial Statements and Supplementary Data

 AgeX
Therapeutics, Inc. and Subsidiaries

to Consolidated Financial Statements

 Page

 Report of Independent Registered Public Accounting Firm (PCAOB ID: 100)

 Audited
 Consolidated Financial Statements:

 Consolidated Balance Sheets

 Consolidated Statements of Operations

 Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity/(Deficit)

 Consolidated Statements of Cash Flows

 Notes to Consolidated Financial Statements

 Report
of Independent Registered Public Accounting Firm

 Board of Directors and Shareholders

 AgeX
Therapeutics, Inc.

 Opinion
on the Consolidated Financial Statements

 We
have audited the accompanying consolidated balance sheets of AgeX Therapeutics, Inc. and Subsidiaries (collectively, the "Company")
as of December 31, 2023 and 2022, the related consolidated statements of operations, convertible preferred stock and stockholders'
equity/(deficit), and cash flows for each of the two years in the period ended December 31, 2023, and the related notes (collectively
referred to as the "consolidated financial statements"). In our opinion, the consolidated financial statements present fairly,
in all material respects, the financial position of the Company at December 31, 2023 and 2022, and the results of its operations and
its cash flows for each of the two years in the period ended December 31, 2023, in conformity with accounting principles generally accepted
in the United States of America.

 The
Company's Ability to Continue as a Going Concern

 The
accompanying consolidated financial statements have been prepared assuming that the Company will continue as a going concern. As discussed
in Note 1, the Company has had recurring losses and negative operating cash flows since inception, an accumulated deficit at December
31, 2023, and insufficient cash and cash equivalents and loan proceeds at December 31, 2023 to fund operations for twelve months from
the date of issuance. All of these matters raise substantial doubt about the Company's ability to continue as a going concern.
Management's plans in regard to these matters are also described in Note 1. The consolidated financial statements do not include
any adjustments that might result from the outcome of this uncertainty.

 Basis
for Opinion

 These
consolidated financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion
on these consolidated financial statements based on our audits. We are a public accounting firm registered with the Public Company
Accounting Oversight Board (United States) ("PCAOB") and are required to be independent with respect to the Company in accordance
with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

 We
conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain
reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud.
The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part
of our audits, we are required to obtain an understanding of internal control over financial reporting, but not for the purpose of expressing
an opinion on the effectiveness of the Company's internal control over financial reporting. Accordingly, we express no such opinion.

 Our
audits included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether
due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence
regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles
used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements.
We believe that our audits provide a reasonable basis for our opinion.

 /s/
 WithumSmith+Brown, PC

 We
 have served as the Company's auditor since 2017.

 San
 Francisco, California

 March

 PCAOB
 ID Number 100

 AGEX

 CONSOLIDATED
BALANCE SHEETS

 ( In
thousands, except par value amounts)

 2023

 2022

 ASSETS

 Current assets:

 Cash and cash equivalents

 $

 $

 Accounts and grants receivable, net

 Prepaid expenses and other current assets

 1,804

 Total current assets

 2,453

 Restricted cash

 Intangible assets, net

 Convertible note receivable

 10,554

 -

 TOTAL ASSETS

 $
 11,965

 $
 3,241

 LIABILITIES, CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY/(DEFICIT)

 Current liabilities:

 $
 2,176

 $
 1,034

 Loans due to Juvenescence, net of debt issuance costs, current portion

 3,672

 7,646

 Related party payables, net

 Warrant liability

 -

 Insurance premium liability and other current liabilities

 -

 1,077

 Total current liabilities

 5,914

 10,078

 Loans due to Juvenescence, net of debt issuance costs, net of current portion

 10,478

 TOTAL LIABILITIES

 6,607

 20,556

 Commitments and contingencies (Note 10)

 -

 -

 Stockholders' equity/(deficit):

 Preferred stock, $ 0.0001 par value, 5,000 shares authorized:

 -

 -

 Series A preferred stock; no par value; stated value $ 100 per share; 212 and nil shares issued and outstanding, respectively

 -

 -

 Series B preferred stock; no par value; stated value $ 100 per share; 148 and nil shares issued and outstanding, respectively

 -

 -

 Preferred stock value

 -

 -

 Common stock, $ 0.0001 par value, 200,000 shares authorized, 1,079 shares issued and outstanding

 -

 -

 Additional paid-in capital

 136,482

 98,998

 Accumulated deficit

 ( 131,013
)

 ( 116,210
)

 Total AgeX Therapeutics, Inc. stockholders' equity/(deficit)

 5,469

 ( 17,212
)

 Noncontrolling interest

 ( 111
)

 ( 103
)

 Total stockholders' equity/(deficit)

 5,358

 ( 17,315
)

 TOTAL LIABILITIES, CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY/(DEFICIT)

 $
 11,965

 $
 3,241

 See
accompanying notes to the consolidated financial statements.

 AGEX

 CONSOLIDATED
STATEMENTS OF OPERATIONS

 (In
thousands, except per share data)

 2023

 2022

 REVENUES

 Grant revenues

 $

 $
 -

 Other revenues

 Total revenues

 Cost of sales

 ( 40
)

 ( 13
)

 Gross profit

 OPERATING EXPENSES

 Research and development

 1,025

 General and administrative

 9,328

 5,971

 Total operating expenses

 10,062

 6,996

 Gain on disposition of fixed assets

 -

 Loss from operations

 ( 9,887
)

 ( 6,975
)

 OTHER EXPENSE, NET

 Interest expense, net

 ( 4,900
)

 ( 3,335
)

 Change in fair value of warrants

 ( 35
)

 ( 225
)

 Other income, net

 Total other expense, net

 ( 4,924
)

 ( 3,547
)

 NET LOSS

 ( 14,811
)

 ( 10,522
)

 Net loss attributable to noncontrolling interest

 NET LOSS ATTRIBUTABLE TO AGEX

 $
 ( 14,803
)

 $
 ( 10,462
)

 NET LOSS PER COMMON SHARE:

 $
 ( 13.72
)

 $
 ( 9.70
)

 WEIGHTED-AVERAGE NUMBER OF COMMON SHARES OUTSTANDING:

 1,079

 1,079

 See
accompanying notes to the consolidated financial statements.

 AGEX

 CONSOLIDATED
STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY/(DEFICIT)

 (In

 Par Value

 Additional

Paid-In Capital

 Accumulated Deficit

 Noncontrolling Interest

 Stockholders'

Equity/ (Deficit)

 Preferred Stock

 Series A

 Series B

 Common Stock

 Total

 Par Value

 Additional

Paid-In Capital

 Accumulated Deficit

 Noncontrolling Interest

 Stockholders'

Equity/ (Deficit)

 BALANCE AT DECEMBER 31, 2021

 -

 $
 -

 -

 $
 -

 1,079

 $
 -

 $
 93,916

 $
 ( 105,748
)

 $
 ( 43
)

 $
 ( 11,875
)

 Issuance of common stock upon vesting of restricted stock units, net of shares retired to pay employee's taxes

 -

 -

 -

 -

 -

 -

 ( 4
)

 -

 -

 ( 4
)

 Issuance of warrants

 -

 -

 -

 -

 -

 -

 Fair value of liability classified warrants issued

 -

 -

 -

 -

 -

 -

 4,148

 -

 -

 4,148

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 ( 10,462
)

 ( 60
)

 ( 10,522
)

 BALANCE AT DECEMBER 31, 2022

 -

 -

 -

 -

 1,079

 -

 98,998

 ( 116,210
)

 ( 103
)

 ( 17,315
)

 Balance

 -

 -

 -

 -

 1,079

 -

 98,998

 ( 116,210
)

 ( 103
)

 ( 17,315
)

 Issuance of preferred stock, net of issuance costs

 -

 -

 -

 -

 35,958

 -

 -

 35,958

 Issuance of common stock upon vesting of restricted stock units, net of shares retired to pay employee's taxes

 -

 -

 -

 -

 -

 -

 ( 1
)

 -

 -

 ( 1
)

 Fair value of liability classified warrants issued

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 ( 14,803
)

 ( 8
)

 ( 14,811
)

 BALANCE AT DECEMBER 31, 2023

 $
 -

 $
 -

 1,079

 $
 -

 $
 136,482

 $
 ( 131,013
)

 $
 ( 111
)

 $
 5,358

 Balance

 $
 -

 $
 -

 1,079

 $
 -

 $
 136,482

 $
 ( 131,013
)

 $
 ( 111
)

 $
 5,358

 See
accompanying notes to the consolidated financial statements.

 AGEX

 CONSOLIDATED
STATEMENTS OF CASH FLOWS

 (In

 2023

 2022

 OPERATING ACTIVITIES:

 Net loss attributable to AgeX

 $
 ( 14,803
)

 $
 ( 10,462
)

 Net loss attributable to noncontrolling interest

 ( 8
)

 ( 60
)

 Adjustments to reconcile net loss attributable to AgeX to net cash used in operating activities:

 Change in fair value of warrants

 Amortization of intangible assets

 Amortization of debt issuance costs

 5,285

 3,137

 Gain on disposition of fixed assets

 ( 73
)

 -

 Write off of prepaid shelf registration statement related expenses

 -

 Changes in operating assets and liabilities:

 Accounts and grants receivable

 ( 53
)

 Prepaid expenses and other current assets

 1,092

 Interest on convertible note receivable

 ( 554
)

 -

 1,150

 Related party payables

 Insurance premium liability

 ( 1,075
)

 ( 983
)

 Other current liabilities

 ( 4
)

 ( 4
)

 Net cash used in operating activities

 ( 7,800
)

 ( 5,939
)

 INVESTING ACTIVITIES:

 Cash advanced on convertible note receivable

 ( 10,000
)

 -

 Net cash used in investing activities

 ( 10,000
)

 -

 FINANCING ACTIVITIES:

 Draw down on loan facilities from Juvenescence

 17,500

 6,000

 Net cash provided by financing activities

 17,500

 6,000

 NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH

 ( 300
)

 CASH, CASH EQUIVALENTS AND RESTRICTED CASH:

 At beginning of the year

 At end of the year

 $

 $

 SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:

 Cash paid during the year for interest

 $

 $

 SUPPLEMENTAL SCHEDULE OF NONCASH FINANCING AND INVESTING ACTIVITIES:

 Issuance of preferred stock in exchange for debt

 $
 36,000

 $
 -

 Issuance of common stock upon vesting of restricted stock units (Note 8)

 $

 $

 Issuance of warrants for debt issuance under the 2020 Loan Agreement

 $
 -

 $

 Fair value of liability classified warrants at debt inception date (Note 6)

 $

 $
 4,148

 Debt refinanced with new debt (Note 5)

 $
 -

 $
 7,160

 See
accompanying notes to the consolidated financial statements.

 AGEX

 NOTES
TO CONSOLIDATED FINANCIAL STATEMENTS

 1.
 Organization, Basis of Presentation and Liquidity

 AgeX
Therapeutics, Inc. ("AgeX," "we," "our," or "us") was incorporated in January 2017 in
the state of Delaware. AgeX is a biotechnology company focused on the development and commercialization of novel therapeutics targeting
human aging and degenerative diseases. AgeX's mission is to apply its comprehensive experience in fundamental biological processes
of human aging to a broad range of age-associated medical conditions.

 AgeX's
proprietary technology, based on telomerase-mediated cellular immortality and regenerative biology, allows AgeX to utilize telomerase-expressing
regenerative pluripotent stem cells ("PSCs") for the manufacture of cell-based therapies to regenerate tissues afflicted
with age-related chronic degenerative disease. AgeX's main technology platforms and product candidates are as follows:

 PSC-derived clonal embryonic progenitor cell lines that may be capable of generating a broad range of cell types for use in cell-based
 therapies;

 UniverCyte
 which uses the HLA-G gene to suppress rejection of transplanted cells and tissues to confer low immune observability to cells;

 AGEX-BAT1
 using adipose brown fat cells for metabolic diseases such as Type II diabetes;

 AGEX-VASC1
 using vascular progenitor cells to treat tissue ischemia; and

 Induced
 tissue regeneration or iTR technology to regenerate or rejuvenate cells to treat a variety of degenerative diseases including those
 associated with aging, as well as other potential tissue regeneration applications such as scarless wound repair.

 AgeX
is an "emerging growth company" as defined in the Jumpstart Our Business Startups Act of 2012.

 Reverse
Stock Split

 On
March 14, 2024 AgeX effected a reverse stock split of its common stock at a ratio of 1 for 35.17 (the "Reverse Stock Split")
resulting in approximately 2,500,000 shares of AgeX common stock being outstanding immediately upon the Reverse Stock Split. Except for
the number of authorized but unissued shares of AgeX common stock, and except as may be otherwise stated in these notes to financial
statements, numbers of shares of AgeX common stock issued and outstanding, or issuable upon the exercise of options or warrants or upon
conversion of convertible indebtedness, and AgeX common stock prices, shown in the consolidated financial statements and these notes
thereto have been retroactively adjusted to reflect the effect of the Reverse Stock Split. See Note 11, Subsequent Events.

 Merger
Agreement and Certain Transactions with Serina Therapeutics, Inc.

March 2023, AgeX borrowed $ 10,000,000 from Juvenescence Limited ("Juvenescence") under the terms of a Secured Convertible
Promissory Note (the "2023 Secured Note") and used the loan proceeds to make a $ 10,000,000 loan to Serina Therapeutics, Inc.
("Serina") under the terms of a Convertible Promissory Note to Serina (the "Serina Note"), in order to provide
Serina with financing in advance of corporate restructuring plans that include a merger through which AgeX would acquire Serina.

 On
August 29, 2023, AgeX entered into an Agreement and Plan of Merger and Reorganization (the "Merger Agreement") with Serina
Therapeutics, Inc. ("Serina"), and Canaria Transaction Corporation, a wholly owned subsidiary of AgeX ("Merger Sub").
Upon the terms and subject to the satisfaction of the conditions described in the Merger Agreement, Merger Sub will be merged with and
into Serina, with Serina surviving as a wholly owned subsidiary of AgeX (the "Merger"). At a special meeting of AgeX stockholders
on March 14, 2024 (the "Special Meeting"), AgeX stockholders approved certain proposals required for consummation of the
Merger pursuant to the terms of the Merger Agreement. Serina stockholders have also approved the Merger. There is no assurance that all conditions to the Merger will be met or waiver and that the Merger will be consummated.
See Note 11, Subsequent Events.

 On
March 19, 2024, AgeX
issued to each holder of AgeX common stock as of the dividend record date, March 18, 2024, three warrants ("Post-Merger Warrants")
for each five shares of AgeX common stock held by such stockholder. Each Post-Merger Warrant will be exercisable for one unit of AgeX
("AgeX Unit") at a price equal to $13.20 per unit and will expire on July 31, 2025. Each AgeX Unit will consist of (i) one
share of AgeX common stock and (ii) one warrant ("Incentive Warrant"). Each Incentive Warrant will be exercisable for one
share of AgeX common stock at a price equal to $18.00 per warrant and will expire on the four-year anniversary of the closing date of
the Merger. See Note 11, Subsequent Events.

 Immediately
following the Merger, equity holders of Serina immediately prior to the closing of the Merger are expected to own approximately 75% of
the outstanding shares of common stock of AgeX, and stockholders of AgeX immediately prior to the closing of the Merger are expected
to own approximately 25% of the outstanding shares of common stock of AgeX, with Serina as a wholly-owned subsidiary, in each case, on
a pro forma fully diluted basis, subject to certain assumptions and exclusions, including the Actual Closing Price (as defined in the
Merger Agreement) of AgeX common stock being equal to or greater than $12.00 per share excluding the impact of any Post-Merger Warrant,
Incentive Warrant or the issuance of any shares of AgeX common stock upon exercise of any Post-Merger Warrants or Incentive Warrants.

 Concurrently
with the execution of the Merger Agreement, AgeX, Serina, and AgeX's controlling stockholder Juvenescence entered into a Side Letter,
which will become effective immediately prior to the closing of the Merger. The Side Letter provides, among other things, that (i) effective
immediately before the consummation of the Merger, Juvenescence will cancel all out of the money AgeX warrants held by Juvenescence;
(ii) Juvenescence will exercise all Post-Merger Warrants it holds to provide the Combined Company an additional $ 15 million in capital
according to the following schedule: (x) at least one-third on or before May 31, 2024, (y) at least one-third on or before November 30,
2024, and (z) at least one-third on or before June 30, 2025; (iii) Juvenescence will not sell any shares of AgeX Series A Preferred Stock
or AgeX Series B Preferred Stock and will take all actions necessary to convert all of such Preferred Stock into AgeX common stock before
a Reverse Stock Split that will occur before the Merger; (iv) Juvenescence will release all security interests, guarantees, pledges,
assignments and other forms of collateral that it may have in AgeX's assets pursuant to the terms of Juvenescence loans to AgeX;
and (v) Juvenescence will consent to a newly formed subsidiary of AgeX assuming AgeX's obligations with respect to loan agreements
and promissory notes governing loans payable to Juvenescence, including obligations for amounts currently owed and future advances of
loan funds, and Juvenescence shall release AgeX from those loan obligations. Juvenescence's covenant regarding retaining ownership
of and converting the Series A Preferred Stock and Series B Preferred Stock into AgeX common stock has been satisfied through the conversion
of such preferred stock into AgeX common stock on February 1, 2024.

 Prior
to the closing of the Merger, any assets of AgeX other than certain "Legacy Assets" will be transferred into a recently formed
subsidiary of AgeX "UniverXome Bioengineering, Inc. ("UniverXome"). UniverXome will assume (i) any indebtedness of
AgeX issued to Juvenescence that has not been previously converted into AgeX Series A Preferred Stock or AgeX Series B Preferred Stock,
which will be secured by the Legacy Assets (ii) most of AgeX's contracts with third parties, other than certain designated contracts
and any contracts that are terminated before the Merger, and (iii) all other liabilities of AgeX in existence as of the effective time
of the Merger (other than certain transaction expenses related to the Merger). See Note 11, Subsequent Events.

 Serina
currently has a pipeline of small molecule candidates targeting central nervous system ("CNS") indications, enabled by the
company's proprietary POZ Platform TM delivery technology. In addition to advancing Serina's wholly owned pipeline
assets, Serina is working with pharma partners currently advancing pre-clinical studies exploring POZ polymer lipid-nanoparticles ("LNPs")
in next generation LNP delivered RNA vaccines. In addition, Serina is advancing a lead drug candidate, SER-252 (POZ-apomorphine) for
the treatment of advanced Parkinson's Disease through pre-clinical studies toward the goal of an investigational new drug submission
or "IND" to the Food and Drug Administration for the initiation of a Phase I clinical trial during the fourth quarter of
2024. Serina has two other pipeline assets that are positioned to enter IND enabling studies, SER-227 (POZ-buprenorphine) for certain
post-operative pain indications, and SER-228 (POZ-cannabidiol) for treatment refractory epilepsy indications. Serina is also focused
on expanding its LNP and anti-body drug conjugate partnering collaborations.

 If
the Merger is completed, the Combined Company will primarily focus on developing Serina's product candidates and it is anticipated
that the Combined Company will not continue to develop AgeX product candidates, other than potentially the development program of NeuroAirmid.
If the Merger is not completed, AgeX expects to continue to execute on its current business strategies below while seeking out and evaluating
potential strategic alternatives with respect to its assets and development programs, which may include a merger, business combination,
investment into AgeX, sale or other disposition of assets or other strategic transaction. In such case, AgeX may not be successful in
executing such strategies or identifying or implementing any such strategic alternatives, and there is a risk that Juvenescence may decide
to stop funding AgeX's operations, which would likely result in the delisting of AgeX common stock from the NYSE America and the
dissolution of AgeX.

 Liquidity
and Going Concern

 In
addition to general economic and capital market trends and conditions, AgeX's ability to raise sufficient additional capital to
finance its operations from time to time will depend on a number of factors specific to AgeX's operations such as operating expenses
and progress in out-licensing its technologies and development of its product candidates. Although AgeX has been able to reduce its operating
expenses, with the exception of certain non-recurring expenses incurred related to the possible Merger between AgeX and Serina, by eliminating
internal research and development activities and focusing instead on outsourcing research and development and seeking licensing arrangements
for AgeX technologies, this approach has also made it more difficult for AgeX to make progress in developing its target product candidates
and technologies, which in turn, along with the amount of indebtedness to Juvenescence and Juvenescence's ownership of approximately
 75.6 % of the outstanding shares of AgeX common stock, may make it more difficult for AgeX to raise capital. The unavailability or inadequacy
of financing to meet future capital needs could force AgeX to modify, curtail, delay, or suspend some or all aspects of planned operations.
Sales of additional equity securities could result in the dilution of the interests of its stockholders. AgeX cannot assure that adequate
financing will be available on favorable terms, if at all.

 AgeX
primarily finances its operations through loans from Juvenescence. A subsidiary of Juvenescence is the largest stockholder of AgeX. AgeX
has incurred operating losses and negative cash flows since inception and had an accumulated deficit of $ 131.0 million as of December
31, 2023. AgeX expects to continue to incur operating losses and negative cash flows.

 Based
on a strategic review of its operations, giving consideration to the status of its product development programs, human resources, capital
needs and resources, and current conditions in the capital markets, AgeX's board of directors and management have adopted operating
plans and budgets to extend the period over which AgeX can continue its operations with its available cash resources. Notwithstanding
those operating plans and budgets, based on AgeX's most recent projected cash flows AgeX believes that its cash and cash equivalents
of $ 0.3 million
as of December 31, 2023, plus cash on hand remaining from the drawdown of the $ 4.4
million loan facility from Juvenescence,
would not be sufficient to satisfy AgeX's anticipated operating and other funding requirements for the next twelve months from
the issuance of these consolidated financial statements. These conditions raise substantial doubt about AgeX's ability to continue
as a going concern. AgeX will need to obtain substantial additional funding in connection with its continuing operations. The financial
statements do not include any adjustments to the amount and classification of assets and liabilities that may be necessary should AgeX
not continue as a going concern.

 Principles
of Consolidation

 The
consolidated financial statements of AgeX are presented in accordance with accounting principles generally accepted in the United States
of American ("U.S. GAAP"). AgeX's consolidated financial statements include the accounts of AgeX and its subsidiaries
in which AgeX has a controlling financial interest. The consolidated financial statements also include certain variable interest entities
in which AgeX is the primary beneficiary (as described in more detail below). For consolidated entities where AgeX has less than 100 %
of ownership, AgeX records net loss attributable to noncontrolling interest on the consolidated statement of operations equal to the
percentage of the ownership interest retained in such entities by the respective noncontrolling parties. The noncontrolling interest
is reflected as a separate element of stockholders' equity/(deficit) on AgeX's consolidated balance sheets.

 AgeX
assesses whether it is the primary beneficiary of a variable interest entity ("VIE") at the inception of the arrangement
and at each reporting date. This assessment is based on its power to direct the activities of the VIE that most significantly impact
the VIE's economic performance and AgeX's obligation to absorb losses or the right to receive benefits from the VIE that
could potentially be significant to the VIE. If the entity is within the scope of the variable interest model and meets the definition
of a VIE, AgeX considers whether it must consolidate the VIE or provide additional disclosures regarding its involvement with the VIE.
If AgeX determines that it is the primary beneficiary of the VIE, AgeX will consolidate the VIE. This analysis is performed at the initial
investment in the entity or upon any reconsideration event. For entities AgeX holds as an equity investment that are not consolidated
under the VIE model, AgeX will consider whether its investment constitutes a controlling financial interest in the entity and therefore
should be considered for consolidation under the voting interest model.

 AgeX
has four subsidiaries, Reverse Bioengineering, Inc. ("Reverse Bio"), ReCyte Therapeutics, Inc. ("ReCyte"), NeuroAirmid
Therapeutics, Inc. ("NeuroAirmid"), and Canaria Transaction Corporation ("Merger Sub"), and has incorporated
but not yet capitalized a fifth subsidiary UniverXome. See Note 11, Subsequent Events. Reverse Bio is a wholly owned subsidiary
of AgeX through which AgeX plans to finance its iTR TM research and development efforts. AgeX has been seeking equity financing
for Reverse Bio and to the extent that such Reverse Bio Financing is obtained through the sale of capital stock or other equity securities
by Reverse Bio, AgeX's equity interest in Reverse Bio and its iTR TM business would be diluted. ReCyte is an early stage pre-clinical research and development
company involved in stem cell-derived endothelial and cardiovascular related progenitor cells for the treatment of vascular disorders
and ischemic conditions. AgeX owns 94.8 % of the outstanding capital stock of ReCyte. NeuroAirmid is jointly owned by AgeX with the University
of California – Irvine and certain researchers and was recently organized to pursue clinical development and commercialization
of cell therapies, focusing initially on Huntington's Disease. AgeX owns 50 % of the outstanding capital stock of NeuroAirmid. AgeX
consolidates NeuroAirmid despite not having majority ownership interest as it has the ability to influence decision making and financial
results through contractual rights and obligations as per Accounting Standards Codification ("ASC") 810, Consolidation.
Merger Sub was incorporated for the purpose of merging with Serina to implement the Merger. UniverXome is expected, in connection with
the planned Merger, to hold certain AgeX assets and assume AgeX liabilities, including but not limited to indebtedness obligations to
Juvenescence. See Note 11, Subsequent Events.

 All
material intercompany accounts and transactions between AgeX and its subsidiaries have been eliminated in consolidation.

 2.
 Summary of Significant Accounting Policies

 Going
Concern Assessment

 AgeX
assesses going concern uncertainty for its consolidated financial statements to determine if AgeX has sufficient cash and cash equivalents
on hand and working capital to operate for a period of at least one year from the date the consolidated financial statements are issued
or are available to be issued, which is referred to as the "look-forward period" as defined by Financial Accounting Standards
Board ("FASB") Accounting Standards Update ("ASU") No. 2014-15. As part of this assessment, based on conditions
that are known and reasonably knowable to AgeX, AgeX will consider various scenarios, forecasts, projections, and estimates, and AgeX
will make certain key assumptions, including the timing and nature of projected cash expenditures or programs, and its ability to delay
or curtail those expenditures or programs, if necessary, among other factors. Based on this assessment, as necessary or applicable, AgeX
makes certain assumptions concerning its ability to curtail or delay research and development programs and expenditures within the look-forward
period in accordance with ASU No. 2014-15 (see Note 1, Organization, Basis of Presentation and Liquidity).

 Use
of Estimates

 The
preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that
affect (i) the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated
financial statements and (ii) the reported amounts of revenues and expenses during the reporting period with consideration given to materiality.
Significant estimates and assumptions which are subject to significant judgment include those related to going concern assessment of
consolidated financial statements, allocations and adjustments necessary for carve-out basis of presentation, including the separate
return method for income taxes, useful lives associated with long-lived assets, including evaluation of asset impairment, allowances
for uncollectible accounts receivables, loss contingencies, deferred income taxes and tax reserves, including valuation allowances related
to deferred income taxes, and assumptions used to value stock-based awards or other equity instruments and liability classified warrants.
Actual results could differ materially from those estimates. To the extent there are material differences between the estimates and actual
results, AgeX's future results of operations will be affected. See Note 6, Warrant Liability, for discussion on estimated
change in fair value of warrant liability.

 See
Note 6, Warrant Liability, for discussion on estimated change in fair value of warrant liability.

 Transactions
with Noncontrolling Interests of Subsidiaries

 AgeX
accounts for a change in ownership interests in its subsidiaries that does not result in a change of control of the subsidiary under
the provisions of ASC 810-10-45-23, Consolidation – Other Presentation Matters, which prescribes the accounting for changes
in ownership interest that do not result in a change in control of the subsidiary, as defined by U.S. GAAP, before and after the transaction.
Under this guidance, changes in a controlling stockholder's ownership interest that do not result in a change of control, as defined
by U.S. GAAP, in the subsidiary are accounted for as equity transactions. Accordingly, if the controlling stockholder retains control,
no gain or loss is recognized in the statements of operations of the controlling stockholder. Similarly, the controlling stockholder
will not record any additional acquisition adjustments to reflect its subsequent purchases of additional shares in the subsidiary if
there is no change of control. Only a proportional and immediate transfer of carrying value between the controlling and the noncontrolling
stockholders occurs based on the respective ownership percentages.

 Fair
Value Measurements of Financial Instruments

 Fair
value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between
market participants at the measurement date. Fair value estimates discussed herein are based upon certain market assumptions and pertinent
information available to management as of the financial statement presentation date.

 The
carrying values of cash equivalents, accounts receivable and accounts payable are carried at, or approximate, fair value as of the reporting
date because of their short-term nature. Fair values for AgeX's warrant liabilities are estimated by utilizing valuation models
that consider current and expected stock prices, volatility, dividends, market interest rates, forward yield curves and discount rates.
Such amounts and the recognition of such amounts are subject to significant estimates that may change in the future.

 To
increase the comparability of fair value measures, the following hierarchy prioritizes the inputs to valuation methodologies used to
measure fair value (ASC 820-10-50, Fair Value Measurements and Disclosures):

 Level
 1 – Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets.

 Level
 2 – Inputs to the valuation methodology include quoted prices for similar assets or liabilities in active markets, and inputs
 that are observable for the assets or liabilities, either directly or indirectly, for substantially the full term of the financial
 instruments.

 Level
 3 – Inputs to the valuation methodology are unobservable; that reflect management's own assumptions about the assumptions
 market participants would make and significant to the fair value.

 In
determining fair value, AgeX utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable
inputs to the extent possible, and also considers counterparty credit risk in its assessment of fair value. For the periods presented,
AgeX has no financial assets recorded at fair value on a recurring basis, except for cash and cash equivalents primarily consisting of
money market funds. These assets are measured at fair value using the period-end quoted market prices as a Level 1 input. The carrying
amounts of accounts receivable, net, prepaid expenses and other current assets, related party amounts due to affiliates, accounts payable,
accrued liabilities and other current liabilities approximate fair values because of the short-term nature of these items. The discounted
conversion prices triggered by certain qualified events in the Serina Note and the 2023 Secured Note are Level 3 on the fair value hierarchy
and subject to fair valuation at inception and remeasurement at each reporting period. The fair value of the discounted conversion prices
under both notes were determined to have an immaterial value at inception and life to date of the notes, as the probability of a future
qualifying event is remote. The likelihood of the future qualifying event will be evaluated at the end of each reporting period. For
additional information regarding the convertible notes and derivatives, see Notes 4, Convertible Note Receivable, and 5, Related
Party Transactions.

 The
accounting guidance establishes a hierarchy which requires an entity to maximize the use of quoted market prices and minimize the use
of unobservable inputs. An asset or liability's level is based on the lowest level of input that is significant to the fair value
measurement. Fair value estimates are reviewed at the origination date and again at each applicable measurement date and interim or annual
financial reporting dates, as applicable for the financial instrument, and are based upon certain market assumptions and pertinent information
available to management at those times.

 The
methods and significant inputs and assumptions utilized in estimating the fair value of the warrant liabilities, as well as the respective
hierarchy designations are discussed further in Note 6, Warrant Liability. The warrant liability measurement is considered a Level
3 measurement based on the availability of market data and inputs and the significance of any unobservable inputs as of the measurement
date. As of December 31, 2023, AgeX has utilized the full credit subject to warrants, and accordingly, the warrants were fully issued
for each of the advances of loan funds under the 2022 Secured Note.

 See
Note 6, Warrant Liability, for additional information on accounting for liability classified warrants and certain Level 3 warrant
valuation tables.

 Cash
and Cash Equivalents

 AgeX
considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents. As of December
31, 2023 and 2022, AgeX's cash balances totaled $ 0.3 million and $ 0.6 million, respectively, and consist entirely of bank account
deposits and amounts held in money market funds.

 Concentrations
of Credit Risk

 Financial
instruments that potentially subject AgeX to significant concentrations of credit risk consist primarily of cash and cash equivalents.
AgeX limits the amount of credit exposure of cash balances by maintaining its accounts in high credit quality financial institutions.
Cash equivalent deposits with financial institutions may occasionally exceed the limits of insurance on bank deposits; however, AgeX
has not experienced any losses on such accounts.

 Restricted
Cash

 In
accordance with ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash, a reconciliation of AgeX's cash and cash
equivalents in the consolidated balance sheets to cash, cash equivalents and restricted cash in the consolidated statements of cash flows
for all periods presented is as follows (in thousands):

of Cash, Cash Equivalents and Restricted Cash

 2023

 2022

 2023

 2022

 Cash and cash equivalents

 $

 $

 Restricted cash (1)

 Cash, cash equivalents, and restricted cash as shown in the consolidated statements of cash flows

 $

 $

 (1)
 Restricted
 cash entirely represents the deposit required to maintain AgeX's corporate credit card
 program.

 Accounts
Receivable, Net

 AgeX
establishes an allowance for doubtful accounts based on the evaluation of the collectability of its receivables after considering a variety
of factors, including the length of time receivables are past due, significant events that may impair the customer's ability to
pay, such as a bankruptcy filing or deterioration in the customer's operating results or financial position, and historical experience.
If circumstances related to customers change, estimates of the recoverability of receivables would be further adjusted. There were no
amounts reserved for doubtful accounts as of December 31, 2023 and 2022.

 Long-Lived
Intangible Assets, Net

 Long-lived
intangible assets, consisting primarily of acquired in-process research and development ("IPR&D") and patents, are stated
at acquired cost, less accumulated amortization. Amortization expense is computed using the straight-line method over the estimated useful
life of 10 years. See Note 3, Selected Balance Sheet Components.

 Impairment
of Long-Lived Assets

 AgeX
assesses the impairment of long-lived assets whenever events or changes in circumstances indicate that such assets might be impaired
and the carrying value may not be recoverable. AgeX's long-lived assets consist entirely of intangible assets. If events or changes
in circumstances indicate that the carrying amount of an asset may not be recoverable and the expected undiscounted future cash flows
attributable to the asset are less than the carrying amount of the asset, an impairment loss, equal to the excess of the carrying value
of the asset over its fair value, is recorded. As of December 31, 2023, there has been no impairment of long-lived assets.

 Leases

 AgeX
accounts for leases in accordance with ASU 2016-02, Leases (Topic 842) ("ASC 842"), and its subsequent amendments
affecting AgeX: (i) ASU 2018-10, Codification Improvements to Topic 842, Leases, and (ii) ASU 2018-11, Leases (Topic 842):
Targeted improvements, using the modified retrospective method. AgeX management determines if an arrangement is a lease at inception.
Leases are classified as either financing or operating, with classification affecting the pattern of expense recognition in the consolidated
statements of operations. When determining whether a lease is a financing lease or an operating lease, ASC 842 does not specifically
define criteria to determine "major part of remaining economic life of the underlying asset" and "substantially all
of the fair value of the underlying asset." For lease classification determination, AgeX continues to use (i) 75% or greater to
determine whether the lease term is a major part of the remaining economic life of the underlying asset and (ii) 90% or greater to determine
whether the present value of the sum of lease payments is substantially all of the fair value of the underlying asset. Under the available
practical expedients, and as applicable, AgeX accounts for the lease and non-lease components as a single lease component. AgeX recognizes
right-of-use ("ROU") assets and lease liabilities for leases with terms greater than twelve months in the consolidated balance
sheets.

 ROU
assets represent an entity's right to use an underlying asset during the lease term and lease liabilities represent an entity's
obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date
based on the present value of lease payments over the lease term. If the lease agreement does not provide an implicit rate in the contract,
an entity uses its incremental borrowing rate based on the information available at commencement date in determining the present value
of lease payments. The operating lease ROU asset also includes any lease payments made and excludes lease incentives. The lease terms
may include options to extend or terminate the lease when it is reasonably certain that the entity will exercise that option. Lease expense
for lease payments is recognized on a straight-line basis over the lease term. AgeX does not capitalize leases that have terms of twelve
months or less.

 AgeX
leased office space in Alameda, California. For 2022 base monthly rent was $ 1,074 and for 2023 base monthly rent is $ 844 for slightly
less space at the same building. AgeX has elected to not apply the recognition requirements under ASC 842 for the lease agreements and
instead recognizes the lease payments as lease cost on a straight-line basis over the lease term as lease payments are not deemed material.

 Accounting
for Warrants

 AgeX
determines the accounting classification of warrants it issues, as either liability or equity, by first assessing whether the warrants
meet liability classification in accordance with ASC 480-10, Accounting for Certain Financial Instruments with Characteristics of
both Liabilities and Equity, then in accordance with ASC 815-40, Accounting for Derivative Financial Instruments Indexed to, and
Potentially Settled in, a Company's Own Stock. Under ASC 480-10, warrants are considered liability classified if the warrants
are mandatorily redeemable, obligate AgeX to settle the warrants or the underlying shares by paying cash or other assets, or warrants
that must or may require settlement by issuing a variable number of shares. If warrants do not meet liability classification under ASC
480-10, AgeX assesses the requirements under ASC 815-40, which states that contracts that require or may require the issuer to settle
the contract for cash are liabilities recorded at fair value, irrespective of the likelihood of the transaction occurring that triggers
the net cash settlement feature. If the warrants do not require liability classification under ASC 815-40, and in order to conclude equity
classification, AgeX also assesses whether the warrants are indexed to its common stock and whether the warrants are classified as equity
under ASC 815-40 or other applicable provisions of U.S. GAAP. After all relevant assessments, AgeX concludes whether the warrants are
classified as liability or equity. Liability classified warrants require fair value accounting at issuance and subsequent to initial
issuance with all changes in fair value after the issuance date recorded in the consolidated statements of operations. Equity classified
warrants only require fair value accounting at issuance with no changes recognized subsequent to the issuance date. AgeX has liability
classified warrants as of December 31, 2023. See Notes 5, Related Party Transactions, and 6, Warrant Liability, for additional
information regarding AgeX warrants.

 Stock-Based

 AgeX
recognizes compensation expense related to employee option grants and restricted stock grants, if any, in accordance with ASC 718, Compensation
– Stock Compensation ("ASC 718"). AgeX estimates the fair value of employee stock-based payment awards on the grant-date
and recognizes the resulting fair value, net of estimated forfeitures for grants prior to 2017, over the requisite service period. Upon
adoption of ASU 2016-09 on January 1, 2017 as further discussed below, forfeitures are accounted for as they occur instead of based on
the number of awards that were expected to vest prior to adoption of ASU 2016-09.

 AgeX
uses the Black-Scholes option pricing model for estimating the fair value of options granted under AgeX's 2017 Equity Incentive
Plan (the "Incentive Plan"). The fair value of each restricted stock grant, if any, is determined based on the value of the
common stock granted or sold. AgeX has elected to treat stock-based payment awards with time-based service conditions as a single award
and recognizes stock-based compensation on a straight-line basis over the requisite service period.

expense for non-employee stock-based awards is recognized in accordance with ASC 718. Stock option awards issued to non-employees, principally
consultants or outside contractors, as applicable, are accounted for at fair value using the Black-Scholes option pricing model. Management
believes that the fair value of the stock options and restricted stock units can more reliably be measured than the fair value of services
received. AgeX records compensation expense based on the then-current fair values of the stock options and restricted stock units at
the grant date. Compensation expense for non-employee grants is recorded on a straight-line basis in the consolidated statements of operations.

 The
Black-Scholes option pricing model requires AgeX to make certain assumptions including the fair value of the underlying common stock,
the expected term, the expected volatility, the risk-free interest rate and the dividend yield (see Note 8, Stock-Based Awards).

 The
fair value of the shares of common stock underlying the stock options is determined in accordance with the Incentive Plan and is based
on prevailing market prices on the NYSE American where AgeX common stock is traded.

 The
expected term of employee stock options represents the weighted-average period that the stock options are expected to remain outstanding.
AgeX estimates the expected term of options granted using the "simplified method" provided under Staff Accounting Bulletin
Topic 14, or SAB Topic 14.

AgeX's common stock has public trading history of fewer than five years, AgeX has estimated the expected volatility using its own
stock price volatility to the extent applicable or a combination of its stock price volatility and the stock price volatility of peer
companies, for a period equal to the expected term of the options, which may exceed five years. The peer companies used include selected
public companies within the biotechnology industry with comparable characteristics to AgeX, including similarity in size, lines of business,
market capitalization, revenue and financial leverage.

 The
risk-free interest rate assumption is based upon observed interest rates on the United States government securities appropriate for the
expected term of AgeX's stock options.

 The
dividend yield assumption is based on AgeX's history and expectation of dividend payouts. AgeX has never declared or paid any cash
dividends on its common stock, and AgeX does not anticipate paying any cash dividends in the foreseeable future.

 All
excess tax benefits and tax deficiencies from stock-based compensation awards accounted for under ASC 718 are recognized as an income
tax benefit or expense, respectively, in the consolidated statements of operations. An excess income tax benefit arises when the tax
deduction of a share-based award for income tax purposes exceeds the compensation cost recognized for financial reporting purposes and,
a tax deficiency arises when the compensation cost exceeds the tax deduction.

 Stock-based
compensation expense for the years ended December 31, 2023 and 2022 consists of stock-based compensation under the AgeX Incentive Plan
(see Note 8, Stock-Based Awards).

of AgeX's consolidated subsidiaries have had their own share-based compensation plans; however, there are no awards granted and
outstanding under those plans as of December 31, 2023 and 2022. For share-based compensation awards granted by privately held consolidated
subsidiaries under their respective equity plans, AgeX determines the fair value of the options granted under those plans using similar
methodologies and assumptions AgeX used for its stock options discussed above.

 Although
the fair value of stock options and restricted stock units is determined in accordance with FASB guidance, changes in the assumptions
and allocations can materially affect the estimated value and therefore the amount of compensation expense recognized in the consolidated
financial statements.

 Income
Taxes

 AgeX
accounts for income taxes in accordance with ASC 740, which prescribes the use of the asset and liability method, whereby deferred tax
asset or liability account balances are calculated at the balance sheet date using current tax laws and enacted rates in effect. Valuation
allowances are established when necessary to reduce deferred tax assets when it is more likely than not that a portion or all of the
deferred tax assets will not be realized. AgeX's judgments, estimates and projections regarding future taxable income may change
over time due to changes, among other factors, in market conditions, changes in tax laws, and tax planning strategies. If AgeX's
assumptions and consequently its estimates change in the future, the valuation allowance may be increased or decreased, which may have
a material impact on AgeX's consolidated financial statements.

 The
guidance also prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement
of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more-likely-than-not
sustainable upon examination by taxing authorities. AgeX recognizes accrued interest and penalties related to unrecognized tax benefits
as income tax expense. No unrecognized tax benefits have been recorded and no amounts were accrued for the payment of interest and penalties
as of December 31, 2023 and 2022. AgeX does not expect that the total amount of unrecognized tax benefits will materially change over
the next twelve months. AgeX is currently unaware of any tax issues under review.

 Revenue
Recognition

 AgeX
recognizes revenue in a manner that depicts the transfer of control of a product or a service to a customer and reflects the amount of
the consideration it expects to receive in exchange for such product or service. In doing so, AgeX follows a five-step approach: (i)
identify the contract with a customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price,
(iv) allocate the transaction price to the performance obligations, and (v) recognize revenue when (or as) the customer obtains control
of the product or service. AgeX considers the terms of a contract and all relevant facts and circumstances when applying the revenue
recognition standard. AgeX applies the revenue recognition standard, including the use of any practical expedients, consistently to contracts
with similar characteristics and in similar circumstances.

 In
the applicable paragraphs below, AgeX has summarized its revenue recognition policies for its various revenue sources in accordance with
Topic 606.

 Revenue
recognition by source and geography – Revenues are recognized when control of the promised goods or services is transferred
to customers, or in the case of governmental entities funding a grant, when allowable expenses are incurred, in an amount that reflects
the consideration AgeX or a subsidiary, depending on which company has the customer or the grant, expects to be entitled to in exchange
for those goods or services.

 The
following table presents AgeX's consolidated revenues disaggregated by source for operations (in thousands):

of Disaggregated of Revenues

 REVENUES:

 2023

 2022

 REVENUES:

 2023

 2022

 Grant revenues

 $

 $
 -

 Other revenues

 Total revenues

 $

 $

 The
following table presents consolidated revenues for operations (in thousands), disaggregated by geography, based on the billing addresses
of customers:

of Disaggregated Geographical Revenue

 REVENUES:

 2023

 2022

 REVENUES:

 2023

 2022

 United States

 $

 $

 Foreign

 Total revenues

 $

 $

 Grant
revenues – AgeX accounts for grants received to perform research and development services in accordance with ASC 730-20, Research
and Development Arrangements. At the inception of the grant, we perform an assessment as to whether the grant is a liability or a
contract to perform research and development services for others. If AgeX or a subsidiary receiving the grant is obligated to repay the
grant funds to the grantor regardless of the outcome of the research and development activities, then AgeX is required to estimate and
recognize that liability. Alternatively, if AgeX or a subsidiary receiving the grant is not required to repay, or if it is required to
repay the grant funds only if the research and development activities are successful, then the grant agreement is accounted for as a
contract to perform research and development services for others, in which case, grant revenue is recognized when the related research
and development expenses are incurred.

 In
applying the provisions of Topic 606, AgeX has determined that government grants are out of the scope of Topic 606 because the government
entities do not meet the definition of a "customer", as defined by Topic 606, as there is not considered to be a transfer
of control of good or services to the government entities funding the grant. In the absence of applicable guidance under U.S. GAAP, our
policy is to recognize grant revenue when the related costs are incurred, provided that the applicable conditions under the government
contracts have been met. Only costs that are allowable under the grant award, certain government regulations and the National Institutes
of Health's supplemental policy and procedure manual may be claimed for reimbursement, and the reimbursements are subject to routine
audits from governmental agencies from time to time. Costs incurred are recorded in research and development expenses on the accompanying
consolidated statements of operations.

 In
applying the provisions of Topic 606, AgeX has determined that government grants are out of the scope of Topic 606 because the government
entities do not meet the definition of a "customer", as defined by Topic 606, as there is not considered to be a transfer
of control of good or services to the government entities funding the grant. In the absence of applicable guidance under U.S. GAAP, our
policy is to recognize grant revenue when the related costs are incurred, provided that the applicable conditions under the government
contracts have been met. Only costs that are allowable under the grant award, certain government regulations and the National Institutes
of Health ("NIH") supplemental policy and procedure manual may be claimed for reimbursement, and the reimbursements are subject
to routine audits from governmental agencies from time to time. Costs incurred are recorded in research and development expenses on the
accompanying consolidated statements of operations.

 AgeX
believes the recognition of revenue as costs are incurred and amounts become realizable is analogous to the concept of transfer of control
of a service over time under ASC 606.

 In
August 2023, AgeX was awarded a grant of up to approximately $ 341,000 from the NIH, National Heart, Lung and Blood Institute. The NIH
grant will provide funding for continued development of AgeX's technologies toward treating cardiovascular disease over a one year
period starting September 1, 2023. Based on our evaluation under the accounting guidance aforementioned, this grant agreement is accounted
for as a contract to perform research and development services for others, in which case, grant revenue is recognized when the related
research and development expenses are incurred. Accordingly, grant funds are made available by the NIH as allowable expenses are incurred.
For the year ended December 31, 2023, AgeX incurred approximately $ 77,000 of allowable expenses under the NIH grant and recognized a
corresponding amount of grant revenues.

 ESI
BIO research products – AgeX, through its ESI BIO research product division, markets a number of products related to human
pluripotent stem cells ("PSC lines"), including research-grade PSC lines and PSC lines produced under current good manufacturing
practices or "cGMP." AgeX offers cells from PSC lines to customers under contracts that permit the customers to utilize PSC
lines for the research, development, and commercialization of cell-based therapies or other products in defined fields of application.
The compensation to AgeX for providing the PSC line cells under such contracts may include up-front payments, milestone payments related
to product development, regulatory matters, and commercialization, and the payment of royalties on sales of products developed from AgeX
PSC lines. Revenues from the sale of research products are included in other revenues.

 Arrangements
with multiple performance obligations – AgeX may enter into contracts with customers that include multiple performance obligations.
For such arrangements, AgeX will allocate revenue to each performance obligation based on its relative standalone selling price. AgeX
will determine or estimate standalone selling prices based on the prices charged, or that would be charged, to customers for that product
or service. As of and for the years ended December 31, 2023 and 2022, AgeX did not have significant arrangements with multiple performance
obligations.

and Development

and development expenses consist primarily of personnel costs and related benefits, including stock-based compensation, amortization
of intangible assets, outside consultants and contractors, sponsored research agreements with certain universities, and suppliers, and
license fees paid to third parties to acquire patents or licenses to use patents and other technology. Research and development expenses
incurred and reimbursed by grants from third parties or governmental agencies if any and as applicable, approximate the respective revenues
recognized in the consolidated statements of operations.

and Administrative

and administrative expenses consist primarily of compensation and related benefits, including stock-based compensation, for executive
and corporate personnel, and professional and consulting fees.

 Segments

 AgeX's
executive management team, as a group, represents the entity's chief operating decision makers. To date, AgeX's executive
management team has viewed AgeX's operations as one segment that includes the research and development of regenerative medicine
technologies targeting the diseases of aging and metabolic disorders, oncology, and neurological diseases and disorders, blood and vascular
system diseases and disorders, and pluripotent cell technologies. As a result, the financial information disclosed materially represents
all of the financial information related to AgeX's sole operating segment.

 Basic
and Diluted Net Loss per Share Attributable to Common Stockholders

 Basic
loss per share is calculated by dividing net loss attributable to AgeX common stockholders by the weighted average number of shares of
common stock outstanding, net of unvested restricted stock or restricted stock units, subject to repurchase by AgeX, if any, during the
period. Diluted loss per share is calculated by dividing the net income attributable to AgeX common stockholders, if any, by the weighted
average number of shares of common stock outstanding, adjusted for the effects of potentially dilutive common stock issuable under outstanding
stock options, warrants, and restricted stock units, using the treasury-stock method, and convertible preferred stock, if any, using
the if-converted method, and treasury stock held by subsidiaries, if any.

 For
the years ended December 31, 2023 and 2022, because AgeX reported a net loss attributable to common stockholders, all potentially dilutive
common stock, comprised of stock options, restricted stock units and warrants, is antidilutive.

 The
following weighted-average common stock equivalents were excluded from the computation of diluted net loss per share of common stock
for the periods presented because including them would have been antidilutive (in thousands):

of Antidilutive Securities Excluded from Computation of Earnings Per Share

 2023

 2022

 Stock options

 Warrants (1)

 Restricted stock units

 -

 -

 (1)
 As
 of December 31, 2023 and 2022, warrants to purchase 320,115 and 344,875 shares, respectively,
 of AgeX common stock were issued and outstanding and held by Juvenescence as consideration
 for certain loan agreements discussed in Note 5, Related Party Transactions. Amounts
 shown in the table are weighted average amounts and reflect the fact that the warrants were
 issued on various dates during applicable periods presented.

 Recently
Adopted Accounting Pronouncements

 In
June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial
Instruments, and subsequent amendments to the initial guidance under ASU 2018-19, ASU 2019-04, ASU 2019-05 and ASU 2019-10, which
amends the current approach to estimate credit losses on certain financial assets. This ASU requires immediate recognition of management's
estimates of current expected credit losses. Under the prior model, losses were recognized only as they were incurred, which FASB has
noted delayed recognition of expected losses that might not yet have met the threshold of being probable. The standard is applicable
to all financial assets (and net investment in leases) that are not accounted for at fair value through net income, such as trade receivables,
loans, debt securities, and net investment in leases, thereby bringing consistency in accounting treatment across different types of
financial instruments and requiring consideration of a broader range of variables when forming loss estimates. Subsequent changes in
the valuation allowance are recorded in current earnings and reversal of previous losses are permitted. AgeX adopted this standard as
of January 1, 2023, and it did not have a material impact on the consolidated financial statements.

 In
March 2022, the FASB issued ASU 2022-01, Derivatives and Hedging (Topic 815): Fair Value Hedging – Portfolio Layer Method,
which clarifies the guidance in ASC 815 on fair value hedge accounting of interest rate risk for portfolios of financial assets. The
ASU amends the guidance in ASU 2017-12 (released on August 28, 2017) that, among other things, established the "last-of-layer"
method for making the fair value hedge accounting for these portfolios more accessible. ASU 2022-01 renames that method the "portfolio
layer" method and addresses feedback from stakeholders regarding its application. AgeX adopted this standard as of January 1, 2023,
and it did not have a material impact on the consolidated financial statements.

 In
March 2022, the FASB issued ASU 2022-02, Financial Instruments – Credit Losses (Topic 326): Troubled Debt Restructurings and
Vintage Disclosures, which amends the accounting for credit losses on financial instruments. This amendment eliminates the recognition
and measurement guidance on troubled debt restructurings for creditors that have adopted the new credit losses guidance in ASC 326 and
requires enhanced disclosures about loan modifications for borrowers experiencing financial difficulty. The new guidance also requires
public business entities to present gross write-offs by year of origination in their vintage disclosures. The guidance became effective
for AgeX on January 1, 2023 and includes interim periods. Entities can elect to adopt the guidance on troubled debt restructurings using
either a prospective or modified retrospective transition. If an entity elects to apply a modified retrospective transition, it will
record a cumulative effect adjustment to retained earnings in the period of adoption. This ASU did not have a material impact on the
consolidated financial statements.

 On
July 14, 2023, the FASB issued ASU 2023-03, P resentation of Financial Statements (Topic 205), Income Statement – Reporting
Comprehensive Income (Topic 220), Distinguishing Liabilities from Equity (Topic 480), Equity (Topic 505), and Compensation – Stock
Compensation, which amends or supersedes various Securities and Exchange Commission ("SEC") paragraphs within the codification
to conform to past announcements and guidance issued by the SEC. Specifically, the ASU responds to (1) the issuance of SEC Staff Accounting
Bulletin (SAB) 120; (2) the SEC staff announcement at the March 24, 2022, EITF meeting; and (3) SAB Topic 6.B, "Accounting Series
Release No. 280 — General Revision of Regulation S-X: Income or Loss Applicable to Common Stock." This ASU is effective immediately
and did not have a material impact on AgeX's consolidated financial statements.

 Recently
Issued Accounting Pronouncements Not Yet Adopted

 In
August 2023, the FASB issued ASU 2023-05, Business Combinations—Joint Venture Formations (Subtopic 805-60): Recognition and
Initial Measurement, under which an entity that qualifies as either a joint venture or a corporate joint venture as defined in the
FASB ASC master glossary is required to apply a new basis of accounting upon the formation of the joint venture. Specifically, the ASU
provides that a joint venture or a corporate joint venture (collectively, "joint ventures") must initially measure its assets
and liabilities at fair value on the formation date. This ASU is effective for AgeX beginning January 1, 2025 and is not expected to
have a material impact on the consolidated financial statements.

 In
December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to income Tax Disclosures, under which entities
must consistently categorize and provide greater disaggregation of information in the rate reconciliation. They must also further disaggregate
income taxes paid. ASU 2023-09 enhances annual income tax disclosures to address investor requests for more information about the tax
risks and opportunities present in an entity's worldwide operations. This ASU is effective for AgeX beginning January 1, 2025 and
is not expected to have a material impact on the consolidated financial statements.

 3.
 Selected Balance Sheet Components

 Intangible
Assets, Net

 On
August 13, 2018, AgeX entered into an Asset Purchase Agreement (the "Purchase Agreement") with Escape Therapeutics, Inc.
("Escape") pursuant to which AgeX acquired certain patents and patent applications related primarily to methods of modifying
cells and tissues and certain pluripotent stem cell lines so as to reduce their risk of being rejected when transplanted. This technology
is called "UniverCyte." AgeX paid Escape $ 1,072,436 in cash and issued 2,274 shares of AgeX common stock, with an
approximate value of $ 240,000, for aggregate acquisition cost of $ 1.3 million for the UniverCyte assets. The Purchase Agreement
was considered an asset acquisition rather than a business combination in accordance with ASC 805-50, Business Combinations.

 ASC
730-10-25(c), Research and Development – Intangible Assets Purchased from Others, provides guidance for acquisition and
capitalization of the cost of intangible assets purchased from others in an asset acquisition that have alternative future uses in other
research and development projects. These intangible assets are referred to as acquired IPR&D with alternative future uses and are
accounted for as intangible assets and amortized to research and development over their useful life. Acquired IPR&D in an asset acquisition
that does not have any alternative future uses is expensed under the same guidance. As an initial focus, AgeX intends to use the UniverCyte
technology in the development of its two lead products, AGEX-BAT1 and AGEX-VASC1 for the treatment of Type II diabetes and cardiovascular
aging, respectively. Accordingly, AgeX recorded the UniverCyte technology acquired from Escape as IPR&D intangible assets
with alternative future uses in accordance with ASC 730-10-25(c) and is amortizing those assets to research and development expense over
their estimated 10 -year useful life.

 In
addition to the purchase price, AgeX will pay Escape a royalty of less than 1 % on net sales of products, processes and services under
the acquired patents if the assets are commercialized. Additional shares of AgeX common stock totaling up to $ 4.3 million of market value
will also be issued to Escape upon the attainment of development and regulatory approval milestones by AgeX for each product covered
by the acquired patents. Contingent consideration in an asset acquisition is generally recorded when probable and estimable in accordance
with ASC 450, Contingencies. Accordingly, none of the milestone payments have been accrued since the attainment of any milestone
in the Purchase Agreement was not probable as of December 31, 2023.

 AgeX
estimated the future undiscounted cash flows expected to be received from the assets developed through the use of the UniverCyte
technology when commercialized. The estimate of the future undiscounted cash flows considered AgeX's financial condition and the
royalties that may become payable to Escape.

 At
December 31, 2023 and 2022, intangible assets, primarily consisting of acquired IPR&D and patents, and accumulated amortization were
as follows (in thousands):

of Intangible Assets, Net

 2023

 2022

 2023

 2022

 Intangible assets

 $
 1,312

 $
 1,312

 Accumulated amortization

 ( 705
)

 ( 574
)

 Total intangible assets, net

 $

 $

 AgeX
recognized $ 131,000 and $ 132,000 in amortization expense of intangible assets, included in research and development expenses, for the
years ended December 31, 2023 and 2022, respectively.

 Amortization
of intangible assets for periods subsequent to December 31, 2023 is as follows (in thousands):

of Amortization Assets

 Year Ending December 31,

 Amortization
 Expense

 2024

 $

 2025

 2026

 2027

 2028

 Total

 $

 Accounts
Payable and Accrued Liabilities

 At
December 31, 2023 and 2022, accounts payable and accrued liabilities were comprised of the following (in thousands):

of Accounts Payable and Accrued Liabilities

 2023

 2022

 2023

 2022

 Accounts payable

 $
 1,413

 $

 Accrued vendors and other expenses

 Accrued compensation and severance expenses

 Total accounts payable and accrued liabilities

 $
 2,176

 $
 1,034

 4.
 Convertible Note Receivable

 On
March 15, 2023, AgeX and Serina entered into a Convertible Note Purchase Agreement (the "Serina Note Purchase Agreement"),
pursuant to which AgeX lent to Serina an aggregate principal amount of $ 10,000,000 as evidenced by the Serina Note on that date. Interest
on the principal amount under the Serina Note accrues on the unpaid principal amount at a simple interest rate equal to 7 % per annum,
computed on the basis of the 360-day year of twelve 30-day months. The outstanding principal amount and accrued interest of $ 10,544,000
under the Serina Note will become due and payable on March 15, 2026.

 In
connection with the issuance of the Serina Note, AgeX is entitled to elect one member to the board of directors of Serina and receive
certain information and inspection rights as well as participation rights for subsequent equity issuances.

 The
principal balance of the Serina Note with accrued interest will automatically convert into Serina preferred stock if Serina raises at
least $ 25,000,000 through the sale of shares of Serina preferred stock ("qualifying event"). The conversion price per share
shall be the lower of (a) 80 % of the lowest price at which the shares of preferred stock were sold, and (b) a "capped price"
equal to $ 105,000,000 divided by Serina's then fully diluted capitalization. AgeX has the option to convert the Serina Note into
Serina preferred stock after a sale of Serina preferred stock regardless of the amount sold by Serina. AgeX evaluated the 20 % discounted
conversion feature of the Serina Note under ASC 815-15, Derivatives and Hedging—Embedded Derivatives, and concluded that
it was an embedded derivative which should be bifurcated from the note and accounted for separately. The 20 % discount was determined
to have an immaterial value at inception and life to date of the Serina Note, as the probability of a future qualifying event is remote.
The likelihood of the future qualifying event will be evaluated at the end of each reporting period and any adjustments will be included
in Interest expense, net in the Other expense, net section of the consolidated statements of operations.

 AgeX
may (i) at its election, upon a change of control (as defined in the Serina Note), convert the Serina Note in whole or in part into either
(a) cash in an amount equal to 100 % of the outstanding principal amount of the Serina Note, plus interest, or (b) into the highest ranking
shares of Serina then issued at a conversion price equal to the lowest price per share at which the most senior series of Serina shares
has been sold in a single transaction or a series of related transactions through which Serina raised at least $ 5,000,000 or (ii) if
the Serina Note remains outstanding as of the maturity date, AgeX may convert the Serina Note into the most senior shares of Serina issued
at the time of conversion at a conversion price equal to the capped price.

 If
the Merger is consummated, the Serina Note will be canceled for no consideration.

 The
outstanding principal balance of the Serina Note with accrued interest may become immediately due and payable prior to the stated maturity
date if an Event of Default as defined in the Serina Note occurs. In addition to this and any other remedy, both in equity and in law,
upon the occurrence of an Event of Default, an interest rate of 10 % per annum and computed on the basis of the 360-day year of twelve
30-day months, shall apply to the Convertible Amount until fully paid. Events of Default under the Serina Note include: (i) the commission
of any act of bankruptcy by Serina or any Significant Subsidiary (as such term is defined in Rule 1-02(w) of Regulation S-X), (ii) the
execution by Serina of a general assignment for the benefit of creditors, (iii) the filing by or against Serina or any Significant Subsidiary
(as such term is defined in Rule 1-02(w) of Regulation S-X) of a petition in bankruptcy or any petition for relief under the federal
bankruptcy act (or, in each case, under any similar insolvency law) or the continuation of such petition without dismissal for a period
of 60 calendar days or more, (iv) the appointment of a receiver or trustee to take possession of the property or assets of Serina or
any Significant Subsidiary (as such term is defined in Rule 1-02(w) of Regulation S-X), (v) failure of Serina to pay any amount due under
the Serina Note when due, which failure to pay is not cured by Serina within 5 business days of written notice thereof, (vi) unless waived
by AgeX, Serina's material breach of any representation, warranty or covenant of Serina under the Serina Note Purchase Agreement,
Serina Note or other agreements entered in connection therewith, which breach, if curable, is not cured by Serina within 10 business
days of written notice by AgeX thereof, (vii) Serina or any subsidiary shall default on any of its obligations under any indebtedness
which default causes the indebtedness thereunder to (x) become prematurely due and payable, (y) be placed on demand or (z) become capable
of being declared by or on behalf of a creditor thereunder to be prematurely due and payable or being placed on demand, in each case,
as a result of such default or any provision having a similar effect (howsoever prescribed), (viii) any monetary judgment, writ or similar
final process shall be entered or filed against Serina, any subsidiary or any of their respective property or other assets for more than
$ 250,000, and such judgment, writ or similar final process shall remain unvacated, unbonded or unstayed for a period of 45 calendar days,
and (ix) Serina experiences a Material Adverse Effect (as defined in the Serina Note Purchase Agreement).

 The
Serina Note Purchase Agreement and Serina Note each includes certain covenants that among other matters require financial reporting and
impose certain restrictions, including (i) restrictions on the incurrence of additional indebtedness by Serina and its subsidiaries;
(ii) requiring that Serina use note proceeds and funds that may be raised through certain equity offerings only for research and development
work, professional and administrative expenses, and for general working capital; and (iii) prohibiting Serina from entering into any
material sale or transfer transactions outside of the ordinary course of business, other than in a merger between AgeX and Serina, without
the consent of AgeX.

 Subordination
Agreement

 In
connection with the issuance of the Serina Note, Serina, each other holder of Serina indebtedness (each a "Serina Lender"),
and AgeX entered into a Subordination Agreement, dated March 15, 2023, pursuant to which each Serina Lender agreed to subordinate to
AgeX's rights of repayment with respect to the obligations owed under the Serina Note Purchase Agreement and the Serina Note (i)
all Serina indebtedness owed to such Serina Lender under certain convertible notes between each Serina Lender and Serina, which aggregate
principal amount of all of such convertible notes equals $ 1,450,000, and (ii) any related security interests.

 5.
 Related Party Transactions

July 2023, AgeX and Juvenescence entered into an Exchange Agreement pursuant to which AgeX issued shares of Series A Preferred Stock
and Series B Preferred Stock to Juvenescence in exchange for the extinguishment of a total of $ 36
 million of indebtedness under the 2020 Loan Agreement,
the 2022 Secured Note, and the 2023 Secured Note discussed below. The unused portion of the line of credit under the 2022 Secured Note
remains available to AgeX subject to the terms and conditions of the 2022 Secured Note. The Series A Preferred Stock and Series B Preferred
Stock automatically converted into shares of AgeX common stock on February 1, 2024. See Notes 7, Stockholders' Equity/(Deficit),
and 11, Subsequent Events.

 2019
Loan Agreement

 On
August 13, 2019, AgeX and Juvenescence entered into a Loan Facility Agreement (the "2019 Loan Agreement") pursuant to which
Juvenescence provided to AgeX a $ 2.0 million line of credit for a period of 18 months. On February 10, 2021, AgeX entered into an amendment
(the "First Amendment") to the 2019 Loan Agreement which extended the maturity date of loans under the 2019 Loan Agreement
to February 14, 2022, and increased the amount of the loan facility by $ 4.0 million. On November 8, 2021, AgeX entered into Amendment
No. 2 to the 2019 Loan Agreement which increased the amount of the loan facility by another $ 1.0 million. As of December 31, 2021, AgeX
had borrowed all of the $ 7.0 million total line of credit under the 2019 Loan Agreement, as amended. On February 14, 2022, AgeX refinanced
the $ 7.0 million outstanding principal amount of the loans and a $ 160,000 origination fee due under the 2019 Loan Agreement, as amended.
See discussion regarding the 2022 Secured Convertible Promissory Note within this Note 5.

 2020
Loan Agreement

 On
March 30, 2020, AgeX and Juvenescence entered into a new Secured Convertible Facility Agreement (the "2020 Loan Agreement")
pursuant to which Juvenescence provided to AgeX an $ 8.0 million line of credit for a period of 18 months. Through December 31, 2023,
AgeX had drawn the full $ 8.0 million line of credit. AgeX issued to Juvenescence 810 shares of AgeX common stock as an arrangement fee
for the loan facility when AgeX borrowed an aggregate of $ 3.0 million under the 2020 Loan Agreement, and AgeX issued to Juvenescence
warrants to purchase a total of 104,365 shares of AgeX common stock ("2020 Warrants") as determined by the warrant formula
described below of which 25,628 are outstanding as of December 31, 2023. On March 13, 2023, the 2020 Loan Agreement was amended to extend
the maturity date to March 30, 2024. During July 2023, the full $ 8.0 million of 2020 Loan Agreement indebtedness was extinguished in
exchange for shares of Series A Preferred Stock pursuant to the Exchange Agreement.

 2020
Warrants — Under the terms of the 2020 Loan Agreement, each time AgeX received an advance of funds under the 2020 Loan Agreement,
AgeX issued to Juvenescence a number of 2020 Warrants equal to 50% of the number determined by dividing the amount of the advance by
the applicable Market Price. The Market Price set for each 2020 Warrant when issued was the closing price per share of AgeX common stock
on the NYSE American on the date of the applicable notice from AgeX requesting a draw of funds that triggered the obligation to issue
the 2020 Warrant. The 2020 Warrants will expire at 5:00 p.m. New York time three years after the date of issue. AgeX had issued to Juvenescence
2020 Warrants to purchase a total of 104,365 shares of AgeX common stock of which 25,628 are outstanding as of December 31, 2023. The
exercise prices of the 2020 Warrants issued through and that are still outstanding as of December 31, 2023 range from $ 28.49 per share
to $ 66.65 per share representing the market closing price on the NYSE American of AgeX common stock on the one day prior to delivery
of the drawdown notices. The number of shares issuable upon exercise of the warrants and the exercise price per share are subject to
adjustment upon the occurrence of certain events such as a stock split or reverse split or combination of the common stock, stock dividend,
recapitalization or reclassification of the common stock, and similar events, and have been adjusted to give effect to the Reverse Stock
Split.

 2022
Secured Convertible Promissory Note and Security Agreement

 On
February 14, 2022, AgeX and Juvenescence entered into a Secured Convertible Promissory Note (the "2022 Secured Note") pursuant
to which Juvenescence agreed to provide to AgeX a $ 13,160,000 line of credit for a period of 12 months. AgeX drew an initial $ 8,160,000
of the line of credit and used $ 7,160,000 to refinance the outstanding principal and the loan origination fees under the 2019 Loan Agreement
with Juvenescence. On February 9, 2023, AgeX and Juvenescence entered into an Amended and Restated Secured Convertible Promissory Note
which amends and restates the 2022 Secured Note and added $ 2 million to the line of credit available to be borrowed by AgeX under the
2022 Secured Note subject to Juvenescence's discretion to approve each loan draw. On May 9, 2023, AgeX and Juvenescence entered
into an Allonge and Second Amendment to Amended and Restated Convertible Promissory Note (the "Second Amendment") that increased
the amount of the line of credit available to AgeX by $ 4,000,000, subject to the terms of the 2022 Secured Note and Juvenescence's
discretion to approve and fund each of AgeX's future draws of that additional amount of credit. On June 2, 2023, AgeX and Juvenescence
entered into a Third Amendment to Amended and Restated Convertible Promissory Note (the "Third Amendment'), to provide that
(i) AgeX may draw on the available portion of the line of credit under the 2022 Secured Note until the earlier of the date a Qualified
Offering as defined in the 2022 Secured Note is consummated by AgeX or October 31, 2023 (subject to Juvenescence's discretion to
approve each loan draw as provided in the 2022 Secured Note), (ii) AgeX will not be obligated to issue additional common stock purchase
warrants to Juvenescence in connection with the receipt of loan funds made available pursuant to the Second Amendment, and (iii) the
definition of Reverse Financing Condition was amended to extend to June 20, 2023 the referenced deadline for fulfillment of the condition
to permit borrowing or other incurrence of indebtedness by Reverse Bioengineering, Inc. The date on which the outstanding principal balance
of the 2022 Secured Note will become due and payable shall be May 9, 2024.

 On
July 31, 2023, AgeX and Juvenescence entered into a Fourth Amendment (the "Fourth Amendment") to the 2022 Secured Note to
provide that (i) the definition of Reverse Financing Condition is amended to extend to October 31, 2023 the referenced deadline for fulfillment
of the condition to permit borrowing or other incurrence of indebtedness by AgeX's subsidiary Reverse Bio, and (ii) Juvenescence
may convert the outstanding amount of the 2022 Secured Note loans or any portion of such loans into AgeX common stock without restriction
by the " 19.9 % Cap" if Juvenescence elects to convert those amounts at a conversion price or prices equal to the "Drawdown
Market Prices" applicable to such loan amounts in lieu of a lower conversion price set with reference to the current market price
of AgeX common stock at the time of conversion. The 19.9 % Cap is a provision of the 2022 Secured Note that limits the amount of common
stock that Juvenescence may acquire through the conversion of Secured Note loans in order to comply with NYSE American requirements pertaining
to the amount of shares that a listed company, such as AgeX, may sell at a price less than the market prices prevailing at the time the
loans were made (the "Drawdown Market Prices") without shareholder approval.

 On
October 3, 2023, AgeX drew $ 500,000 of its credit available under the 2022 Secured Note. On October 31, 2023 AgeX drew the final $ 500,000
 of the credit line available under the Fourth Amendment.

 On
November 9, 2023, AgeX and Juvenescence entered into the Allonge and Fifth Amendment to Amended and Restated Convertible Promissory Note
(the "Fifth Amendment") that increases the amount of the line of credit available to AgeX by $ 4,400,000, subject to the terms
of the 2022 Secured Note and Juvenescence's discretion to approve and fund each of AgeX's future draws of that additional
amount of credit. Concurrently with the execution of the Fifth Amendment, AgeX also entered into an additional Pledge Agreement to add
shares of a subsidiary to the collateral under the Security Agreement, and AgeX's subsidiaries ReCyte, Reverse Bio, and UniverXome
each entered into a Guaranty Agreement and Joinder Agreement pursuant to which each of them agreed to guaranty AgeX's obligations
to Juvenescence pursuant to the 2022 Secured Note, as amended by the Fifth Amendment, and to grant Juvenescence a security interest in
their respective assets pursuant to the Security Agreement to secure their obligations to Juvenescence.

 On
November 15, 2023, AgeX drew $ 500,000 of its credit available under the 2022 Secured Note with Juvenescence. On December 5, 2023, AgeX
drew $ 500,000 of its credit available under the 2022 Secured Note with Juvenescence.

 As
of December 31, 2023, AgeX had borrowed a total of $ 20,160,000 under the 2022 Secured Note, of which $ 7,500,000 was borrowed during the
year ended December 31, 2023. During July 2023, $ 17,992,800 of 2022 Secured Note indebtedness, comprised of $ 16,660,000 borrowing and
$ 1,332,800 of accrued loan origination fees, was extinguished in exchange for shares of Series A Preferred Stock and Series B Preferred
Stock pursuant to the Exchange Agreement. See Note 7, Stockholders' Equity/(Deficit).

 As
an arrangement fee for the 2022 Secured Note, AgeX will pay Juvenescence an origination fee in an amount equal to 4% of the amount each
draw of loan funds, which will accrue as each draw is funded, and an additional 4% of all the total amount of funds drawn that will accrue
following the end of the period during which funds may be drawn from the line of credit. The origination fee will become due and payable
on the repayment date or in a pro rata amount with any prepayment of in whole or in part of the outstanding principal balance of the
2022 Secured Note.

 2022
Warrants – Upon each drawdown of funds under the 2022 Secured Note prior to June 2, 2023 when the Third Amendment went into
effect, AgeX issued to Juvenescence warrants to purchase shares of AgeX common stock ("2022 Warrants"). The 2022 Warrants
are governed by the terms of a Warrant Agreement between AgeX and Juvenescence. The number of 2022 Warrants issued with respect to each
draw of loan funds was equal to 50% of the number determined by dividing the amount of the applicable loan draw by the applicable Market
Price. The Market Price was the last closing price per share of AgeX common stock on the NYSE American preceding the delivery of the
notice from AgeX requesting the draw of funds that triggered the obligation to issue 2022 Warrants. The exercise price of the 2022 Warrants
is the applicable Market Price used to determine the number of Warrants issued. The 2022 Warrants will expire at 5:00 p.m. New York time
three years after the date of issue.

 As
of December 31, 2023, AgeX had issued to Juvenescence 2022 Warrants to purchase a total of 294,482 shares of AgeX common stock, of which
2022 Warrants to purchase 53,980 shares of AgeX common stock were issued during the year ended December 31, 2023. The exercise prices
of the 2022 Warrants issued through December 31, 2023 range from $ 20.75 per share to $ 30.94 per share representing the market closing
price of AgeX common stock on the NYSE American on the one day prior to delivery of the drawdown notices. The number of shares issuable
upon exercise of the warrants and the exercise price per share are subject to adjustment upon the occurrence of certain events such as
a stock split or reverse split or combination of the common stock, stock dividend, recapitalization or reclassification of the common
stock, and similar events, and have been adjusted to give effect to the Reverse Stock Split..

 Conversion
of Loan Amounts to Common Stock – In lieu of repayment of funds borrowed, AgeX may convert the loan balance and any accrued
but unpaid origination fee into AgeX common stock or "units" if AgeX consummates a sale of common stock (or common stock
paired with warrants or other convertible securities in "units") in which the gross sale proceeds are at least $ 10,000,000.
The conversion price per share or units shall be the lowest price at which shares or units are sold. Juvenescence may convert the loan
balance in whole or in part into AgeX common stock at any time at Juvenescence's election at the closing price per share of AgeX
common stock on the NYSE American or other national securities exchange on the date prior to the date Juvenescence gives AgeX notice
Juvenescence's election to convert the loan or a portion thereof into common stock.

 Default
Provisions – The loan balance and origination fees may become immediately due and payable prior to the mandatory repayment
date if an Event of Default occurs. Events of Default under the 2022 Secured Note include the following: (a) AgeX fails to pay any principal
amount payable by it in the manner and at the time provided under and in accordance with the 2022 Secured Note; (b) AgeX fails to pay
any other amount payable by it in the manner and at the time provided under and in accordance with the 2022 Secured Note or the Security
Agreement described below or any other agreement executed in connection with the 2022 Secured Note (the "Loan Documents")
and the failure is not remedied within three business days; (c) AgeX fails to perform any of its covenants or obligations or fail to
satisfy any of the conditions under the 2022 Secured Note or any other Loan Document and, such failure (if capable of remedy) remains
unremedied to the satisfaction of Juvenescence (in its sole discretion) for 10 business days after the earlier of (i) notice requiring
its remedy has been given by Juvenescence to AgeX and (ii) actual knowledge of the failure by senior officers of AgeX; (d) if any indebtedness
of AgeX in excess of $100,000 becomes due and payable, or a breach or other circumstance arises thereunder such that Juvenescence is
entitled to declare such indebtedness due and payable, prior to its due date, or any indebtedness of AgeX in excess of $25,000 is not
paid on its due date; (e) AgeX stops payment of its debts generally or ceases or threatens to cease to carry on its business or is unable
to pay its debts as they fall due or is deemed by a court of competent jurisdiction to be unable to pay its debts as they fall due, or
enters into any arrangements with its creditors generally; (f) if (i) an involuntary proceeding (other than a proceeding instituted by
Juvenescence or an affiliate of Juvenescence) shall be commenced or an involuntary petition shall be filed seeking liquidation, reorganization
or other relief in respect of AgeX and any subsidiary, or of all or a substantial part of its assets, under any federal, state or foreign
bankruptcy, insolvency, receivership or similar law now or hereafter in effect or (ii) an involuntary appointment of a receiver, trustee,
custodian, sequestrator, conservator or similar official for AgeX or a subsidiary or for a substantial part of its assets occurs (other
than in a proceeding instituted by Juvenescence or an affiliate of Juvenescence), and, in any such case, such proceeding shall continue
undismissed and unstayed for sixty (60) consecutive days without having been dismissed, bonded or discharged or an order of relief is
entered in any such proceeding; (g) it becomes unlawful for AgeX to perform all or any of its obligations under the 2022 Secured Note
or any authorization, approval, consent, license, exemption, filing, registration or other requirement of any governmental, judicial
or public body or authority necessary to enable AgeX to comply with its obligations under the 2022 Secured Note or to carry on its business
is not obtained or, having been obtained, is modified in a manner that precludes AgeX or its subsidiaries from conducting their business
in any material respect, or is revoked, suspended, withdrawn or withheld or fails to remain in full force and effect; (h) the issuance
or levy of any judgment, writ, warrant of attachment or execution or similar process against all or any material part of the property
or assets of AgeX or a subsidiary if such process is not released, vacated or fully bonded within 60 calendar days after its issue or
levy; (i) any injunction, order, judgment or decision of any court is entered or issued which, in the opinion of Juvenescence, materially
and adversely affects, or is reasonably likely so to affect, the ability of AgeX or a subsidiary to carry on its business or to pay amounts
owed to Juvenescence under the 2022 Secured Note; (j) AgeX, whether in a single transaction or a series of related transactions, sells,
leases, licenses, consigns, transfers or otherwise disposes of any material portion of its assets (with any such disposition with respect
to any asset or assets with a fair value of at least $ 250,000 being deemed material), other than (i) certain permitted investments (ii)
sales, transfers and dispositions of inventory in the ordinary course of business, (iii) any termination of a lease of real or personal
property that is not necessary in the ordinary course of the AgeX's business, could not reasonably be expected to have a material
adverse effect and does not result from AgeX's default, and (iv) any sale, lease, license, consignment, transfer or other disposition
of assets that are no longer necessary in the ordinary course of business or which has been approved in writing by Juvenescence; (k)
any of the following shall occur: (i) the security and/or liens created by the Security Agreement or any other Loan Document shall at
any time cease to constitute valid and perfected security and/or liens on any material portion of the collateral intended to be covered
thereby; (ii) except for expiration in accordance with its terms, the Security Agreement or any other Loan Document pursuant to which
a lien is granted by AgeX in favor of Juvenescence shall for whatever reason be terminated or shall cease to be in full force and effect;
(iii) the enforceability of the Security Agreement or any other Loan Document pursuant to which a lien is granted by AgeX in favor of
Juvenescence shall be contested by AgeX or a subsidiary; (iv) AgeX shall assert that its obligations under the 2022 Secured Note or any
other Loan Document shall be invalid or unenforceable; or (v) a loss, theft, damage or destruction occurs with respect to a material
portion of the collateral; (l) there is any change in the financial condition of AgeX and its subsidiaries which, in the opinion of Juvenescence,
materially and adversely affects, or is reasonably likely so to affect, the ability of AgeX to perform any of its obligations under the
2022 Secured Note; and (m) any representation, warranty or statement made, repeated or deemed made or repeated by AgeX in the 2022 Secured
Note, or pursuant to the Loan Documents, is incomplete, untrue, incorrect or misleading in any material respect when made, repeated or
deemed made.

 Restrictive
Covenants – The 2022 Secured Note includes certain covenants that among other matters such as financial reporting: (i) impose
financial restrictions on AgeX while the 2022 Secured Note remains unpaid, including restrictions on the incurrence of additional indebtedness
by AgeX and its subsidiaries, except that AgeX's subsidiary Reverse Bio will be permitted to incur debt convertible into equity
not guaranteed or secured by the assets of AgeX or any other AgeX subsidiary, (ii) require that AgeX use loan proceeds and funds that
may be raised through certain equity offerings only for research and development work, professional and administrative expenses, for
general working capital, and for repayment of all or a portion of AgeX's indebtedness to Juvenescence; and (iii) prohibit AgeX
from making additional investments in subsidiaries, unless AgeX obtains the written consent of Juvenescence to a transaction that otherwise
would be prohibited or restricted.

 Security
Agreement – AgeX has entered into a Security Agreement granting Juvenescence a security interest in substantially all of the
assets of AgeX, including a security interest in shares of AgeX subsidiaries that hold certain assets, as collateral for AgeX's
loan obligations. If an Event of Default occurs, Juvenescence will have the right to foreclose on the assets pledged as collateral.

 $ 10
Million Secured Convertible Promissory Note

 On
March 13, 2023, AgeX and Juvenescence entered into a $ 10 Million Secured Convertible Promissory Note (the "2023 Secured Note")
pursuant to which Juvenescence has loaned to AgeX $ 10,000,000. AgeX used the loan proceeds to finance the $ 10,000,000 loan to Serina
under the Serina Note. See Note 4, Convertible Note Receivable, for further information on the Serina Note and the related Serina
Note Purchase Agreement.

 On
July 31, 2023, AgeX and Juvenescence also entered into an amendment to the 2023 Secured Note that mirrors the amendments of the 2022
Secured Note described above, and also creates an earlier time window, ending October 31, 2023, during which Juvenescence may elect to
convert any amount outstanding under the 2023 Secured Note into shares of AgeX common stock. After October 31, 2023, Juvenescence may
convert outstanding amounts under the 2023 Secured Note into AgeX common stock on any date more than ninety (90) days after the earlier
of (a) the occurrence of a Qualified Merger as defined, and (b) March 13, 2024.

 The
outstanding principal balance of the 2023 Secured Note was scheduled to become due and payable on March 13, 2026. In lieu of accrued
interest, AgeX agreed to pay Juvenescence an origination fee in an amount equal to 7% of the loan funds disbursed to AgeX, which will
accrue in two installments. The origination fee will become due and payable on the earliest to occur of (i) conversion of the 2023 Secured
Note into shares of AgeX common stock, (ii) repayment of the 2023 Secured Note in whole or in part (provided that the origination fee
shall be prorated for the amount of any partial repayment), and (iii) the acceleration of the maturity date of the 2023 Secured Note
following an Event of Default as defined in the 2023 Secured Note.

July 2023, the 2023 Secured Note indebtedness, plus a portion of the accrued loan origination fees, was exchanged for Series B Preferred
Stock pursuant to the Exchange Agreement.

 The
2023 Secured Note includes a provision allowing AgeX to convert the loan balance and any accrued but unpaid origination fee into AgeX
common stock or "units" if AgeX consummates a sale of common stock (or common stock paired with warrants or other convertible
securities in "units") in which the gross sale proceeds are at least $ 10,000,000. If less than $ 25,000,000 is raised through
the sale of common stock or units, the conversion price per share or units shall be the lowest price at which shares or units are sold.
If at least $ 25,000,000 is raised, the conversion price per share shall be 85 % of the "Market Price" of AgeX common stock
determined as provided in the 2023 Secured Note. AgeX evaluated the 15 % discounted conversion feature of the 2023 Secured Note under
ASC 815-15, Derivatives and Hedging—Embedded Derivatives, and concluded that it was an embedded derivative which should
be bifurcated from the 2023 Secured Note and accounted for separately. The 15 % discount was determined to have an immaterial value at
inception and life to date of the 2023 Secured Note, as the probability of a future financing event described above is remote. The likelihood
of the future qualifying event will be evaluated at the end of each reporting period and any adjustments will be included in Interest
expense, net in the Other expense, net section of the consolidated statements of operations.

 The
2023 Secured Note includes certain covenants that among other matters require financial reporting and impose certain restrictions on
AgeX that are substantially the same as those under the 2022 Secured Note.

 AgeX
has entered into an Amended and Restated Security Agreement that amends the February 14, 2022 Security Agreement between AgeX and Juvenescence
and adds the 2023 Secured Note to the obligations secured by the Security Agreement. The Security Agreement grants Juvenescence a security
interest in substantially all of the assets of AgeX, including a security interest in shares of AgeX subsidiaries that hold certain assets,
as collateral for AgeX's loan obligations. If an Event of Default as defined in the 2023 Secured Note occurs, Juvenescence will
have the right to foreclose on the assets pledged as collateral with respect to any accrued loan origination fees remaining unpaid under
the 2023 Secured Note.

 Registration
Rights

 AgeX
entered into certain Registration Rights Agreements, as amended, pursuant to which AgeX has agreed to register for sale under the Securities
Act of 1933, as amended (the "Securities Act") all shares of AgeX common stock presently held by Juvenescence or that may
be acquired by Juvenescence through the exercise of common stock purchase warrants that they hold or that they may acquire pursuant to
the 2020 Loan Agreement and pursuant to the 2022 Secured Note, and shares that they may acquire through the conversion of those loans
into AgeX common stock. AgeX has filed a registration statement on Form S-3, which has become effective under the Securities Act, for
offerings on a delayed or continuous basis covering 467,657 shares of AgeX common stock held by Juvenescence and 92,358 shares of AgeX
common stock that may be issued upon the exercise of warrants held by Juvenescence. Juvenescence retains the right to require AgeX to
register additional shares of common stock that Juvenescence may acquire through the exercise of warrants or the conversion of loans.
AgeX is obligated to pay the fees and expenses of each registered offering under such registration rights agreement except for underwriting
discounts and commissions. AgeX and Juvenescence will indemnify each other from certain liabilities in connection the registration, offer,
and sale of securities under a registration statement, including liabilities arising under the Securities Act.

 AgeX
and Juvenescence have entered into a second Registration Rights Agreement pursuant to which AgeX has agreed to use commercially reasonable
efforts to register the for sale under the Securities Act the shares of common stock issuable upon conversion of Preferred Stock. A registration
statement must be filed upon request of Juvenescence if Form S-3 is available to AgeX. Juvenescence will also have "piggyback"
registration rights if AgeX files a registration statement for the sale of shares for itself or other stockholders, subject to certain
customary exceptions based on the nature of the registration statement. AgeX will bear the expenses of the registration statement but
not underwriting or broker's commissions related to the sale of the common stock. AgeX and Juvenescence will indemnify each other
from certain liabilities in connection the registration, offer, and sale of securities under a registration statement, including liabilities
arising under the Securities Act.

 Debt
Issuance Costs

 In
accordance with ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs, all debt issuance costs are recorded as a discount
on the debt and amortized to interest expense over the term of the applicable loan agreement using the effective interest method. Direct
debt issuance costs include but are not limited to legal fees, debt origination fees, estimated fair market value of common stock and
warrants issued in connection with the loan agreement, and NYSE American additional listing fees for the underlying shares of warrants
issued with each drawdown of funds.

 The
following table summarizes the debt issuance costs and the debt balances net of debt issuance costs by loan agreement as of December
31, 2023 (in thousands):

 Schedule of Debt Issuance Costs and Debt Balances

 Drawdown
 of Funds

 Origination Fee

 Debt Exchanged for
 Preferred Stock

 Total
 Debt

 Debt Issuance Costs

 Amortization
 of Debt Issuance
 Costs

 Total Debt, Net

 Current

 2020 Loan Agreement

 $
 8,000

 $
 -

 $
 ( 8,000
)

 $
 -

 $
 ( 2,806
)

 $
 2,806

 $
 -

 2022 Secured Note

 20,160

 1,590

 ( 17,993
)

 3,757

 ( 6,197
)

 6,112

 3,672

 Total current, net

 28,160

 1,590

 ( 25,993
)

 3,757

 ( 9,003
)

 8,918

 3,672

 Non-current

 2023 Secured Note

 10,000

 ( 10,007
)

 ( 666
)

 Total debt, net

 $
 38,160

 $
 2,290

 $
 ( 36,000
)

 $
 4,450

 $
 ( 9,669
)

 $
 9,584

 $
 4,365

 Total debt, net

 $
 38,160

 $
 2,290

 $
 ( 36,000
)

 $
 4,450

 $
 ( 9,669
)

 $
 9,584

 $
 4,365

 Related
Party Payables, net

 From
October 2018 through December 2023, AgeX's Chief Operating Officer, who was also an employee of Juvenescence, was devoting a majority
of his time to AgeX's operations. AgeX reimburses Juvenescence for his services on an agreed-upon fixed annual amount of approximately
$ 280,000. AgeX reimburses Juvenescence for services provided by other Juvenescence employees on a work order basis under a shared services
agreement effective January 1, 2023. As of December 31, 2023 and 2022, AgeX had approximately $ 66,000 and $ 141,000 payable, respectively,
to Juvenescence included in related party payables, net, on the consolidated balance sheets.

 Indemnification
Agreements

 On
March 13, 2023, AgeX executed that certain Letter of Indemnification in Lieu of or Supplemental to a Medallion Signature Guarantee ("Letter
of Indemnification"), pursuant to which AgeX agreed to indemnify American Stock Transfer & Trust Company, LLC and its affiliates,
successors and assigns (the "AST Indemnity") from and against any and all claims, damages, liabilities or losses arising
out of the transfer of all of the AgeX common stock held by Juvenescence to its wholly-owned subsidiary, Juvenescence US Corp. (the "Share
Transfer"). In connection with AgeX's execution of the Letter of Indemnification, AgeX and Juvenescence entered into that
certain Transfer of Shares of AgeX Therapeutics, Inc. Common Stock – Indemnification Agreement, pursuant to which Juvenescence
agreed to indemnify AgeX against any and all claims, damages, liabilities or losses arising out of the Share Transfer or AST Indemnity.

 On
December 21, 2023, AgeX executed that certain Letter of Indemnification in Lieu of or Supplemental to a Medallion Signature Guarantee
(the "ETC Letter of Indemnification"), pursuant to which AgeX agreed to indemnify Equiniti Trust Company LLC and its affiliates,
successors and assigns (the "ETC Indemnity") from and against any and all claims, damages, liabilities or losses arising
out of the transfer 467,657 shares of AgeX common stock held by Juvenescence US Corp. to JuvVentures (the "JUV US Share Transfer").
In connection with AgeX's execution of the ETC Letter of Indemnification, AgeX, Juvenescence, the ultimate parent company of Juvenescence
US Corp. and JuvVentures, entered into that certain Transfer of Shares of AgeX Therapeutics, Inc. Common Stock – Indemnification
Agreement, pursuant to which Juvenescence agreed to indemnify AgeX against any and all claims, damages, liabilities or losses arising
out of the JUV US Share Transfer or ETC Indemnity.

 6.
 Warrant Liability

 AgeX
determines the accounting classification of warrants it issues, as either liability or equity, by first assessing whether the warrants
meet liability classification in accordance with ASC 480-10, Accounting for Certain Financial Instruments with Characteristics of
both Liabilities and Equity, then in accordance with ASC 815-40, Accounting for Derivative Financial Instruments Indexed to, and
Potentially Settled in, a Company's Own Stock. Under ASC 480, Distinguishing Liabilities from Equity, warrants are considered
liability classified if the warrants are mandatorily redeemable, obligate AgeX to settle the warrants or the underlying shares by paying
cash or other assets, or warrants that must or may require settlement by issuing a variable number of shares. If warrants do not meet
liability classification under ASC 480-10, AgeX assesses the requirements under ASC 815-40, which states that contracts that require
or may require the issuer to settle the contract for cash are liabilities recorded at fair value, irrespective of the likelihood of the
transaction occurring that triggers the net cash settlement feature. If the warrants do not require liability classification under ASC
815-40, and in order to conclude equity classification, AgeX also assesses whether the warrants are indexed to its common stock and whether
the warrants are classified as equity under ASC 815-40 or other applicable U.S. GAAP.

 As
a condition of each amount drawn up to $ 15,160,000 from the 2022 Secured Note, on receipt of each amount drawn AgeX granted to Juvenescence
a number of warrants equal to 50% of the gross value of the relevant advance made. The gross value is the quotient of the drawdown amount
and the exercise price. The exercise price was based on the market closing price of AgeX's common stock on the NYSE American on
the one day preceding the delivery of the relevant drawdown notice. See Note 5, Related Party Transactions.

 AgeX
has utilized the full credit available under the 2022 Secured Note that is subject to warrants and accordingly the warrants were issued
for each of the advances of loan funds under the 2022 Secured Note. After all relevant assessments, AgeX determined that the warrants
issued under the 2022 Secured Note require classification as a liability pursuant to ASC 480, Distinguishing Liabilities from Equity.
In accordance with the accounting guidance, for each reporting period prior to the full drawdown of the entire $ 15,160,000 of the 2022
Secured Note line of credit subject to warrants, the amount of warrant liability was determined and recognized on the balance sheet for
the applicable reporting period based on the number of warrants that would have been issued if $ 15,160,000 of the 2022 Secured Note line
of credit was drawn. The amount of warrant liability attributed to the expected future issuance of warrants upon subsequent loan draws
was subsequently adjusted for the fair value of warrants actually issued upon each loan draw, and the number of warrants that could be
issued for the remaining credit available was re-measured for the applicable reporting period with changes being recorded as a component
of net other expense in the consolidated statements of operations.

 Under
the Third Amendment, AgeX is not obligated to issue additional warrants to Juvenescence in connection with the receipt of loan funds
up to $ 4 million made available pursuant to the Second Amendment. See Note 5, Related Party Transactions, for further details
of the Second Amendment and the Third Amendment.

 The
fair value of the warrant liabilities was measured using a Black-Scholes option pricing model. Significant inputs into the model at the
inception date, the date when warrants were issued upon receipt of amounts drawn during the period, and as of the reporting period end
remeasurement dates are as follows:

of Warrants Liabilities And Stock Option Awards using a Black-Scholes Option-Pricing Model

 Black-Scholes Assumptions

 Exercise
 Price (1)

 Warrant
 Expiration
 Date (2)

 Stock
 Price (3)

 Interest
 Rate
 (annual) (4)

 Volatility
 (annual) (5)

 Time to
 Maturity (Years)

 Calculated
 Fair Value per Share

 Inception Date: 2/14/2022

 $
 27.43

 2/13/2025

 $
 24.32

 1.80
 %

 122.99
 %

 $
 17.11

 Issuance Date: 2/14/2022

 $
 27.43

 2/13/2025

 $
 24.32

 1.80
 %

 122.99
 %

 $
 17.11

 Issuance Date: 2/15/2022

 $
 27.43

 2/14/2025

 $
 26.28

 1.80
 %

 123.28
 %

 $
 18.81

 Period Ended 3/31/2022

 $
 33.06

 3/30/2025

 $
 30.04

 2.45
 %

 123.28
 %

 $
 21.36

 Issuance Date: 4/4/2022

 $
 30.94

 4/3/2025

 $
 28.79

 2.61
 %

 123.31
 %

 $
 20.59

 Issuance Date: 6/6/2022

 $
 25.01

 6/5/2025

 $
 28.14

 2.94
 %

 122.62
 %

 $
 20.84

 Period Ended 6/30/2022

 $
 21.10

 6/29/2025

 $
 20.27

 2.99
 %

 122.21
 %

 $
 14.53

 Issuance Date: 8/16/2022

 $
 23.56

 8/15/2025

 $
 22.51

 3.19
 %

 121.37
 %

 $
 16.07

 Period Ended 9/30/2022

 $
 21.45

 9/29/2025

 $
 19.75

 4.25
 %

 121.49
 %

 $
 14.09

 Issuance Date: 10/21/2022

 $
 24.27

 10/20/2025

 $
 21.81

 4.52
 %

 120.51
 %

 $
 15.42

 Issuance Date: 12/14/2022

 $
 20.75

 12/13/2025

 $
 18.99

 3.94
 %

 120.01
 %

 $
 13.40

 Period Ended 12/31/2022

 $
 19.34

 12/30/2025

 $
 19.41

 4.22
 %

 119.31
 %

 $
 13.93

 Issuance Date: 1/25/2023

 $
 25.85

 1/24/2026

 $
 26.42

 3.84
 %

 119.17
 %

 $
 18.98

 Inception Date: 2/9/2023

 $
 24.72

 2/8/2026

 $
 23.20

 4.15
 %

 118.94
 %

 $
 16.38

 Issuance Date: 2/15/2023

 $
 21.93

 2/14/2026

 $
 21.10

 4.35
 %

 118.93
 %

 $
 14.99

 Period Ended 3/31/2023

 $
 23.25

 3/30/2026

 $
 23.32

 3.81
 %

 113.43
 %

 $
 16.15

 Issuance Date: 4/4/2023

 $
 23.25

 4/3/2026

 $
 23.67

 3.60
 %

 113.01
 %

 $
 16.39

 (1)
 Based
 on the market closing price of AgeX's common stock on the NYSE American on the day
 prior to each debt Inception Date, on each presented period ending date, and one day prior
 to the delivery of the relevant drawdown notice in accordance with terms of the 2022 Secured
 Note (with such drawdown notice delivery date being shown as the Issuance Date in the table),
 and as adjusted to reflect the Reverse Stock Split. For this purpose, the date on which the
 2022 Secured Note was amended and restated to increase the line of credit by $ 2,000,000 was
 treated as a new Inception Date for that portion of the line of credit.

 (2)
 Warrants
 are exercisable over a three-year period from each Issuance Date.

 (3)
 Based
 on the market price of AgeX's common stock on the NYSE American as of each date presented.

 (4)
 Interest
 rate for U.S. Treasury Bonds, as of each date presented, as published by the U.S. Federal
 Reserve.

 (5)
 Based
 on the historical daily volatility of AgeX common stock as of each date presented.

 The
warrants outstanding and fair values at each of the respective valuation dates are summarized below.

of Warrant Outstanding and Fair Values

 Warrant Liability

 Credit Line and
 Draw Amounts
 (in thousands)

 Warrants

 Fair Value
 per Share

 Fair Value
 (in thousands)

 Fair value as of January 1, 2022

 $
 -

 -

 $
 -

 $
 -

 Fair value at initial measurement date of 2/14/2022

 13,160
 (1)

 239,860
 (2)

 17,11

 4,103

 Fair value of warrants issued on 2/14/2022

 ( 7,160
) (3)

 ( 130,501
) (4)

 17.11

 ( 2,232
)

 Fair value of warrants issued on 2/15/2022

) (3)

 ( 18,226
) (4)

 18.81

 ( 343
)

 Fair value of warrants issued on 4/4/2022

) (3)

 ( 16,162
) (4)

 20.59

 ( 333
)

 Fair value of warrants issued on 6/6/2022

) (3)

 ( 19,995
) (4)

 20.84

 ( 417
)

 Fair value of warrants issued on 8/16/2022

) (3)

 ( 21,222
) (4)

 16.07

 ( 341
)

 Fair value of warrants issued on 10/21/2022

 ( 500
) (3)

 ( 10,301
) (4)

 15.42

 ( 159
)

 Fair value of warrants issued on 12/14/2022

) (3)

 ( 24,096
) (4)

 13.40

 ( 323
)

 Change in fair value of warrants

 -

 -

 -

 Fair value as of December 31, 2022

 $
 (1)

 12,924
 (2)

 $
 13.93

 $

 Fair value of warrants issued on 1/25/2023

 ( 500
) (3)

 ( 9,671
) (4)

 18.98

 ( 184
)

 Fair value at initial measurement date of 2/9/2023

 2,000
 (1)

 40,457
 (2)

 16.38

 Fair value of warrants issued on 2/15/2023

) (3)

 ( 22,801
) (4)

 14.99

 ( 342
)

 Fair value of warrants issued on 4/4/2023

) (3)

 ( 21,507
) (4)

 16.39

 ( 352
)

 Change in fair value of warrants

 -

 -

 -

 Fair value as of December 31, 2023

 $
 -
 (1)

 -
 (2)

 $
 -

 $
 -

 (1)
 of credit available under the 2022 Secured Note on date of inception and as of each period
 end date. For this purpose, the date on which the 2022 Secured Note was amended and restated
 to increase the line of credit by $ 2,000,000 was treated as a new Inception Date for that
 portion of the line of credit.

 (2)
 of warrants issuable, as applicable, (a) if the amount of credit available was drawn for
 measurement as of the applicable inception date, or (b) subsequently for remeasurement as
 of each period end date.

 (3)
 of drawdown as of the date presented.

 (4)
 of warrants issued upon receipt of amounts drawn against the 2022 Secured Note as of the
 date presented.

the years ended December 31, 2023 and 2022, AgeX recorded a loss of $ 35,000 and $ 225,000, respectively, on changes in the fair value
of warrants.

 The
warrant liabilities are considered Level 3 liabilities on the fair value hierarchy as the determination of fair value includes various
assumptions about future activities and AgeX's stock prices and historical volatility as inputs. None of the warrants issued have
been exercised.

 7.
 Stockholders' Equity/(Deficit)

 Preferred
Stock

 On
July 24, 2023, AgeX issued to Juvenescence 211,600 shares of a newly authorized Series A Preferred Stock and 148,400 shares of a newly
authorized Series B Preferred Stock in exchange for the cancellation of a total of $ 36 million of indebtedness consisting of the outstanding
principal amount of loans then outstanding under the 2020 Loan Agreement, the 2022 Secured Note, and the 2023 Secured Note, plus the
loan origination fees accrued with respect to the 2022 Secured Note and a portion of the loan origination fees accrued pursuant to the
2023 Secured Note. The cancellation of indebtedness in exchange for the Series A Preferred Stock and Series B Preferred Stock (collectively
referred to as the "Preferred Stock") was conducted pursuant to the Exchange Agreement between AgeX and Juvenescence. All
of the shares of Preferred Stock were automatically converted into a total of 1,421,666 shares of AgeX common stock on February 1, 2024
in accordance with the terms of the Preferred Stock. See Note 11, Subsequent Events.

 Classification
of Preferred Stock

 On
November 7, 2023, certain terms of the Series A Preferred Stock and Series B Preferred Stock was amended (i) to clarify that certain
change of control or disposition of asset transactions would be treated as adeemed liquidation if the applicable transaction is approved
by the Board of Directors or stockholders of AgeX, and (ii) to provide that in case of such a deemed liquidation transaction holders
of Preferred Stock would receive the same type of consideration as that distributed or paid to holders of AgeX common stock. This amendment
permits the classification of the Series A Preferred Stock and Series B Preferred Stock as permanent equity effective November 7, 2023.

 The
redemption rights of the Series A Preferred Stock and Series B Preferred Stock in case of a "deemed liquidation" provide
that the holders of AgeX preferred stock would always be entitled to receive the same form of consideration as the holders of AgeX common
stock. Accordingly, the preferred stock has been presented in permanent equity section of the consolidated balance sheet.

 The
following is a description of certain terms of the Preferred Stock that were applicable to the shares of Preferred Stock outstanding
as of December 31, 2023. However, all of the Preferred Stock was converted into shares of common stock on February 1, 2024. See Note
11, Subsequent Events.

 Dividends
 – The Preferred Stock is not entitled to receive any payment or distribution of cash or other dividends.

 Liquidation
Preference – In the event of any voluntary or involuntary liquidation, dissolution or other winding up of the affairs of AgeX,
subject to the preferences and other rights of any senior stock, before any assets of AgeX shall be distributed to holders of common
stock or other junior stock, all of the assets of AgeX available for distribution to stockholders shall be distributed among the holders
of Series A Preferred Stock and Series B Preferred Stock and any other "parity stock" that may be issued ranking parri
passu with those series of Preferred Stock with respect to liquidation rights, in proportion to the number of shares of Series B
Preferred Stock and parity stock held by each such holder as of the record date for the determination of holders of Series A Preferred
Stock, Series B Preferred Stock, and parity stock entitled to receive such distribution, until AgeX shall have distributed to the holders
of those shares an amount of assets having a value equal to the subscription price per share. If the assets of AgeX shall be insufficient
to pay in full such amounts, then the entire assets to be distributed to the holders of Series A Preferred Stock, Series B Preferred
Stock and parity stock shall be ratably distributed among such holders. The (i) acquisition of AgeX by another entity by means of any
transaction or series of transactions (including, without limitation, any reorganization, merger or consolidation) in which the stockholders
of AgeX immediately before such transaction or series of transactions do not own a majority of the outstanding stock of the surviving
or acquiring corporation upon completion of such transaction or series of transactions or (ii) a sale of all or substantially all of
the assets of AgeX in a single transaction or series of related transactions, shall be deemed a liquidation. On November 7, 2023, certain
terms of the liquidation preference were amended.

 Conversion
of Preferred Stock into Common Stock – Each share of Preferred Stock shall be convertible into a number of shares of AgeX common
stock determined by dividing (x) a number equal to the number of dollars and cents comprising the subscription price, by (y) a number
equal to the number of dollars and cents comprising the conversion price. The subscription price per share of Preferred Stock is $ 100
which was paid through the exchange of indebtedness for shares of Preferred Stock. The conversion price per share of Series A Preferred
Stock or Series B Preferred Stock is $ 0.72 which was the closing price of AgeX common stock on the NYSE American on the last trading
day immediately preceding the execution of the Exchange Agreement and prior to adjustment to give effect to the Reverse Stock Split.

 Optional
Conversion – Preferred Stock shall be convertible into common stock at the election of the holder of shares of Preferred Stock
at any time and from time to time subject to the limitations on conversion of Series B Preferred Stock discussed below.

 Automatic
Conversion – The outstanding shares of Series A Preferred Stock and Series B Preferred Stock shall automatically be converted
into common stock without any further act of AgeX or its stockholders ("Automatic Conversion") upon the earliest of: (x)
the date on which AgeX or a subsidiary shall have consummated a merger with Serina, or a subsidiary thereof; and (y) February 1, 2024.
Further, if the holders of at least a majority of the outstanding shares of Series A Preferred Stock or Series B Preferred Stock approve
or consent to the Automatic Conversion of the shares of that series, then the outstanding shares of Series A Preferred Stock or Series
B Preferred Stock, as applicable, shall be converted into common stock upon such approval or consent.

 The
outstanding shares of Series B Preferred Stock shall automatically be converted into common stock without any further act of AgeX or
its stockholders upon the earliest of: (x) the date on which AgeX or a subsidiary shall have consummated a merger with Serina or a subsidiary
thereof; and (y) February 1, 2024.

 Adjustment
of conversion price and subscription price – If AgeX shall (a) declare a dividend or make a distribution on its common stock
in shares of common stock, (b) subdivide or reclassify the outstanding common stock into a greater number of shares, or (c) combine or
reclassify the outstanding common stock into a smaller number of shares, the conversion price in effect at the time of the record date
for such dividend or distribution or the effective date of such subdivision, combination or reclassification shall be proportionately
adjusted. If AgeX shall (i) declare a dividend or make a distribution on a series of Preferred Stock in shares of Preferred Stock, (ii)
subdivide or reclassify the outstanding shares of a series of Preferred Stock into a greater number of shares, or (iii) combine or reclassify
the outstanding shares of a series of Preferred Stock into a smaller number of shares, the subscription price in effect at the time of
the record date for such dividend or distribution or the effective date of such subdivision, combination or reclassification shall be
proportionately adjusted. Successive adjustments in the conversion price or subscription price, as applicable, shall be made whenever
any event specified above shall occur.

 No
Fractional Shares – No fractional share of common stock or scrip shall be issued upon conversion of Preferred Stock. Instead
of any fractional share of common stock which would otherwise be issuable upon conversion of any Preferred Stock, AgeX will pay a cash
adjustment in respect of such fractional interest in an amount equal to that fractional interest at the then fair value determined in
accordance with the terms of the Preferred Stock.

 Voting
Rights – The following matters shall require the approval of the holders of a majority of the shares of a series of Preferred
Stock then outstanding, voting as a separate class: (i) creation of any Preferred Stock ranking as senior stock to the series with respect
to liquidation preferences; (ii) repurchase of any shares of common stock or other junior stock except shares issued pursuant to or in
connection with a compensation or incentive plan or agreement approved by the Board of Directors for any officers, directors, employees
or consultants of AgeX; (iii) any sale, conveyance, or other disposition of all or substantially all AgeX's property or business,
or any liquidation or dissolution of AgeX, or a merger into or consolidation with any other corporation (other than a wholly-owned subsidiary
corporation) but only to the extent that the Delaware General Corporation Law requires that such transaction be approved by each class
or series of Preferred Stock; (iv) any adverse change in the powers, preferences and rights of, and the qualifications, limitations or
restrictions on, the series of Preferred Stock; or (v) any amendment of AgeX's Certificate of Incorporation or Bylaws that results
in any adverse change in the powers, preferences and rights of, and the qualifications, limitations or restrictions on, the series of
Preferred Stock. However, the terms of the Preferred Stock do not restrict or limit the rights and powers of the Board of Directors to
fix by resolution the rights, preferences, and privileges of, and restrictions and limitations on, stock ranking as parity stock or junior
stock to a series of Preferred Stock. Except as may otherwise be required by the Delaware General Corporation Law, as the same may be
amended from time to time, the Preferred Stock will have no other voting rights.

 Governing
Law – The powers, designations, preferences, rights, qualifications, limitations, and restrictions of either series of Preferred
Stock, the validity, authorization and issuance of such Preferred Stock, and the conversion of such Preferred Stock into common stock
shall be governed by and construed and enforced in accordance with the internal laws of the State of Delaware, without regard to the
principles of conflict of laws thereof, and all legal proceedings pursuant or with respect to or concerning such matters (a "Proceeding"),
whether brought by or against a holder of Preferred Stock or AgeX or any of their respective directors, officers, stockholders, employees
or agents, shall be commenced in the state and federal courts sitting in the State of Delaware (the "Delaware Courts"). The
Preferred Stock provides that (a) AgeX and each holder of Preferred Stock irrevocably submits to the exclusive jurisdiction of the Delaware
Courts for the adjudication of any Proceeding, and irrevocably waives, and agrees not to assert in any Proceeding any claim that they
are not personally subject to the jurisdiction of such Delaware Courts, or such Delaware Courts are an improper or inconvenient venue
for such Proceeding, and (b) AgeX and each holder of Preferred Stock irrevocably waives personal service of process and consents to process
being served in any such Proceeding by mailing a copy thereof via registered or certified mail or overnight delivery (with evidence of
delivery) to such party at the address in effect for notices to such party and agrees that such service shall constitute good and sufficient
service of process and notice.

 Common
Stock

 AgeX
has 200,000,000 shares of common stock, $ 0.0001 par value per share, authorized. The holders of AgeX's common stock are entitled
to receive ratably dividends when, as, and if declared by the Board of Directors out of funds legally available. Upon liquidation, dissolution,
or winding up, the holders of AgeX common stock are entitled to receive ratably the net assets available after the payment of all debts
and other liabilities and subject to the prior rights of AgeX outstanding preferred shares, if any.

 The
holders of common stock are entitled to one vote for each share held on all matters submitted to a vote of AgeX stockholders. The holders
of common stock have no preemptive, subscription, or redemption rights. The outstanding shares of common stock are fully paid and non-assessable.

 As
of December 31, 2023 and 2022, there were 1,079,080 and 1,079,022 shares of AgeX common stock issued and outstanding, respectively.

 Issuance
and Sale of Warrants by AgeX

 In
connection with the $ 2,500,000 of drawdowns of loan funds from Juvenescence under the 2022 Secured Note during the year ended December
31, 2023, AgeX issued to Juvenescence 2022 Warrants to purchase 53,980 shares of AgeX common stock. See Note 6, Warrant Liability.

 8.
 Stock-Based Awards

 Equity
Incentive Plan

 Under
the 2017 Equity Incentive Plan, as amended (the "Incentive Plan"), AgeX has reserved 241,683 shares of common stock for the
grant of stock options or the sale of restricted stock ("Restricted Stock") or for the settlement of restricted stock units
which are hypothetical units issued with reference to common stock ("Restricted Stock Units" or "RSUs"). AgeX
may also grant stock appreciation rights ("SARs") under the Incentive Plan. The Plan also permits AgeX to issue such other
securities as its Board of Directors (the "Board") or the Compensation Committee (the "Committee") administering
the Incentive Plan may determine. Awards of stock options, Restricted Stock, SARs, and RSUs ("Awards") may be granted under
the Incentive Plan to AgeX employees, directors, and consultants.

 Awards
may vest and thereby become exercisable or have restrictions on forfeiture lapse on the date of grant or in periodic installments or
upon the attainment of performance goals, or upon the occurrence of specified events.

 No
person shall be granted, during any one year period, options to purchase, or SARs with respect to, more than 28,433 shares in the aggregate,
or any Awards of Restricted Stock or RSUs with respect to more than 14,216 shares in the aggregate. If an Award is to be settled in cash,
the number of shares on which the Award is based shall not count toward the individual share limit.

 No
Awards may be granted under the Incentive Plan more than ten years after the date upon which the Incentive Plan was adopted by the Board,
and no options or SARS granted under the Incentive Plan may be exercised after the expiration of ten years from the date of grant.

 Stock
Options

 Options
granted under the Incentive Plan may be either "incentive stock options" within the meaning of Section 422(b) of the Internal
Revenue Code of 1986, as amended ("IRC" or the "Code"), or "non-qualified" stock options that do
not qualify incentive stock options. Incentive stock options may be granted only to AgeX employees and employees of subsidiaries. The
exercise price of stock options granted under the Incentive Plan must be equal to the fair market of AgeX common stock on the date the
option is granted. In the case of an optionee who, at the time of grant, owns more than 10% of the combined voting power of all classes
of AgeX stock, the exercise price of any incentive stock option must be at least 110% of the fair market value of the common stock on
the grant date, and the term of the option may be no longer than five years. The aggregate fair market value of common stock (determined
as of the grant date of the option) with respect to which incentive stock options become exercisable for the first time by an optionee
in any calendar year may not exceed $ 100,000.

 The
exercise price of an option may be payable in cash or in common stock having a fair market value equal to the exercise price, or in a
combination of cash and common stock, or other legal consideration for the issuance of stock as the Board or Committee may approve.

 Generally,
options will be exercisable only while the optionee remains an employee, director or consultant, or during a specific period thereafter,
but in the case of the termination of an employee, director, or consultant's services due to death or disability, the period for
exercising a vested option shall be extended to the earlier of 12 months after termination or the expiration date of the option.

 Restricted
Stock and RSUs

 In
lieu of granting options, AgeX may enter into purchase agreements with employees under which they may purchase or otherwise acquire Restricted
Stock or RSUs subject to such vesting, transfer, and repurchase terms, and other restrictions. The price at which Restricted Stock may
be issued or sold will be not less than 100% of fair market value. Employees or consultants, but not executive officers or directors,
who purchase Restricted Stock may be permitted to pay for their shares by delivering a promissory note or an installment payment agreement
that may be secured by a pledge of their Restricted Stock. Restricted Stock may also be issued for services actually performed by the
recipient prior to the issuance of the Restricted Stock. Unvested Restricted Stock for which AgeX has not received payment may be forfeited,
or AgeX may have the right to repurchase unvested shares upon the occurrence of specified events, such as termination of employment.

 Subject
to the restrictions set with respect to the particular Award, a recipient of Restricted Stock generally shall have the rights and privileges
of a stockholder, including the right to vote the Restricted Stock and the right to receive dividends; provided that, any cash dividends
and stock dividends with respect to the Restricted Stock shall be withheld for the recipient's account, and interest may be credited
on the amount of the cash dividends withheld. The cash dividends or stock dividends so withheld and attributable to any particular share
of Restricted Stock (and earnings thereon, if applicable) shall be distributed to the recipient in cash or, at the discretion of the
Board or Committee, in shares of common stock having a fair market value equal to the amount of such dividends, if applicable, upon the
release of restrictions on the Restricted Stock and, if the Restricted Stock is forfeited, the recipient shall have no right to the dividends.

 The
terms and conditions of a grant of RSUs shall be determined by the Board or Committee. No shares of common stock shall be issued at the
time a RSU is granted. A recipient of RSUs shall have no voting rights with respect to the RSUs. Upon the expiration of the restrictions
applicable to a RSU, AgeX will either issue to the recipient, without charge, one share of common stock per RSU or cash in an amount
equal to the fair market value of one share of common stock.

 At
the discretion of the Board or Committee, each RSU (representing one share of common stock) may be credited with cash and stock dividends
paid in respect of one share ("Dividend Equivalents"). Dividend Equivalents shall be withheld for the recipient's account,
and interest may be credited on the amount of cash Dividend Equivalents withheld. Dividend Equivalents credited to a recipient's
account and attributable to any particular RSU (and earnings thereon, if applicable) shall be distributed in cash or in shares of common
stock having a fair market value equal to the amount of the Dividend Equivalents and earnings, if applicable, upon settlement of the
RSU. If a RSU is forfeited, the recipient shall have no right to the related Dividend Equivalents.

 Stock
Appreciation Rights ("SARs")

 A
SAR is the right to receive, upon exercise, an amount payable in cash or shares, or a combination of shares and cash, equal to the number
of shares subject to the SAR that is being exercised, multiplied by the excess of (a) the fair market value of a common stock on the
date the SAR is exercised, over (b) the exercise price specified in the SAR Award agreement. SARs may be granted either as free standing
SARs or in tandem with options. No SAR may be exercised later than 10 years after the date of grant.

 The
exercise price of a SAR shall not be less than 100 % of the fair market value of one share of common stock on the date of grant. A SAR
granted in conjunction with an option shall have the same exercise price as the related option, shall be transferable only upon the same
terms and conditions as the related option, and shall be exercisable only to the same extent as the related option; provided, however,
that the SAR by its terms shall be exercisable only when the fair market value per share exceeds the exercise price per share of the
SAR or related option. Upon any exercise of a SAR granted in tandem with an option, the number of shares for which the related option
shall be exercisable shall be reduced by the number of shares for which the SAR has been exercised. The number of shares for which a
SAR issued in tandem with an option shall be exercisable shall be reduced by the number of shares for which the related option has been
exercised.

 Equity
Incentive Plan Awards

 A
summary of the Incentive Plan activity and related information follows (in thousands except weighted-average exercise price):

 Summary
of Stock Option Activity

 Shares
 Available
 for Grant

 of Options
 Outstanding

 of RSUs
 Outstanding

 Weighted-
 Average
 Exercise Price

 Balance at January 1, 2022

 -

 $
 81.62

 Increase option pool

 -

 -

 -

 Options granted

 ( 3
)

 -

 27.76

 Options forfeited, cancelled or expired

 ( 6
)

 -

 99.12

 Restricted stock units vested

 -

 -

 -

 -

 Balance at December 31, 2022

 -

 $
 79.07

 Options granted

 ( 1
)

 -

 26.73

 Options forfeited, cancelled or expired

 ( 11
)

 -

 67.30

 Restricted stock units vested

 -

 -

 -

 -

 Balance at December 31, 2023

 -

 $
 80.28

 Options exercisable at December 31, 2023

 $
 81.70

 There
were no exercises of stock options during the years ended December 31, 2023 and 2022. Total proceeds, if all options granted and outstanding
as of December 31, 2023 were exercised, would be approximately $ 6.6 million.

 At
December 31, 2023, AgeX had approximately $ 68,000 of total unrecognized compensation costs related to the stock options and unvested
RSUs under the Incentive Plan that will be recognized as expense over a weighted-average period of approximately 1.36 years.

 The
aggregate intrinsic value of options outstanding and options exercisable were nil as of December 31, 2023.

 Stock-Based
Compensation Expense

 AgeX
recorded stock-based compensation expense in the following categories on the accompanying consolidated statements of operations for the
years ended December 31, 2023 and 2022 (in thousands):

of Stock Based Compensation Expense

 2023

 2022

 2023

 2022

 Research and development

 $

 $

 General and administrative

 Total stock-based compensation expense

 $

 $

 The
weighted-average estimated fair value of stock options granted during the years ended December 31, 2023 and 2022 was $ 22.41 per share
and $ 24.48 per share, respectively, using the Black-Scholes option pricing model with the following weighted-average assumptions:

of Weighted Average Assumptions to Calculate Fair Value of Stock Options

 2023

 2022

 Grant Price

 $
 26.73

 $
 27.76

 Expected life (in years)

 5.15

 5.58

 Risk-free interest rates

 4.12
 %

 1.74
 %

 Volatility

 118.12
 %

 130.71
 %

 Dividend yield

 -
 %

 -
 %

 The
determination of stock-based compensation is inherently uncertain and subjective and involves the application of valuation models and
assumptions requiring the use of judgment. If AgeX had made different assumptions, its stock-based compensation expense and net loss
for the years ended December 31, 2023 and 2022 may have been significantly different. See Note 2, Summary of Significant Accounting
Policies, for a discussion of the factors used in determining these assumptions.

 AgeX
does not recognize deferred income taxes for incentive stock option compensation expense and records a tax deduction only when a disqualified
disposition has occurred.

 9.
 Income Taxes

 Net
loss from operations before income taxes for the years ended December 31, 2023 and 2022 was approximately $ 14.8 million and $ 10.5 million,
respectively.

 Deferred
income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial
reporting purposes and the amounts used for income tax purposes.

 The
primary components of the net deferred tax assets and liabilities as of December 31, 2023 and 2022 were as follows (in thousands):

of Components of Deferred Tax Assets and Liabilities

 Deferred tax assets/(liabilities):

 2023

 2022

 Net operating loss carryforwards

 $
 14,278

 $
 12,408

 Capital loss carryforwards

 3,120

 3,120

 Research and development credit carryforwards

 1,178

 1,138

 Patents and fixed assets

 Capitalized research expenses

 Other, net

 Valuation allowance

 ( 20,816)

 ( 18,461
)

 Total net deferred tax assets

 $
 -

 $
 -

 A
valuation allowance is provided when it is more likely than not that all or some portion of the deferred tax assets will not be realized.
AgeX established a full valuation allowance for all periods presented due to the uncertainty of realizing future tax benefits from its
net operating loss ("NOL") carryforwards and other deferred tax assets.

 Income
taxes differed from the amounts computed by applying the U.S. federal income tax rate indicated to pretax losses from operations as a
result of the following:

of Income Tax Rate Reconciliation

 2023

 2022

 2023

 2022

 Computed tax benefit at federal statutory rate

 %

 %

 Research and development and other credits

 -
 %

 %

 State tax benefit, net of effect on federal income taxes

 %

 ( 7
)%

 Permanent differences

 ( 4
)%

 -
 %

 ( 1
)%

 ( 2
)%

 Debt finance equity costs

 ( 5
)%

 ( 6
)%

 Return to provision and other adjustments

 -
 %

 ( 5
)%

 Change in valuation allowance

 ( 15
)%

 ( 2
)%

 Income tax rate

 -
 %

 -
 %

 AgeX
has established an accrual for uncertain tax positions related to its U.S. research and development credits. As of December 31, 2023
and 2022, there was no accrued interest related to uncertain tax positions. AgeX does not believe it is reasonably possible that its
unrecognized tax benefits will significantly change in the next twelve months. A reconciliation of beginning and ending balances for
unrecognized tax benefits is as follows (in thousands):

of Unrecognized Tax Benefits

 2023

 2022

 2023

 2022

 Balance at January 1

 $

 $
 -

 Additions for tax positions related to the current year

 Additions for tax positions related to prior years

 -

 Reductions for tax positions related to prior years

 -

 -

 Reductions related to settlements

 -

 -

 Reductions related to a lapse of statute

 -

 -

 Balance at December 31

 $

 $

 AgeX
monitors proposed and issued tax law, regulations, and cases to determine the potential impact of uncertain income tax positions. At
December 31, 2023, AgeX had not identified any potential subsequent events that would have a material impact on unrecognized income tax
benefits within the next twelve months.

 As
of December 31, 2023, AgeX has net operating loss carryforwards of approximately $ 59.7 million for U.S. federal income tax purposes.
In general, NOLs and other tax credit carryforwards generated by legal entities in a consolidated federal tax group are available to
other members of the tax group depending on the nature of the transaction that a member may enter into while still in the consolidated
federal tax group.

 As
of December 31, 2023, AgeX has net operating losses of approximately $ 19.8 million for California purposes. In general, NOLs and other
tax credit carryforwards generated by legal entities in a combined state tax group are available to other members of the tax group depending
on the nature of the transaction that a member may enter into while still in the combined state tax group. Federal net operating losses
generated on or prior to December 31, 2017, expire in varying amounts between 2028 and 2037, while federal net operating losses generated
after December 31, 2017, carryforward indefinitely. The state net operating losses expire in varying amounts between 2028 and 2043.

 As
of December 31, 2023, AgeX has research and development tax credit carryforwards for federal and state tax purposes $ 0.7 million and
$ 0.5 million, respectively. The federal tax credits expire between 2028 and 2043, while the state tax credits have no expiration date.

 As
of December 31, 2023, AgeX has capital loss carryforwards for federal and state tax purposes of $ 12.4 million and $ 5.9 million, respectively.
The federal and California capital loss carryforwards will expire in 2026.

 Effective
for tax years beginning after December 31, 2021, taxpayers are required to capitalize any expenses incurred that are considered incidental
to research and experimentation ("R&E") activities under IRC Section 174. While taxpayers historically had the option
of deducting these expenses under IRC Section 174, the December 2017 Tax Cuts and Jobs Act mandates capitalization and amortization of
R&E expenses for tax years beginning after December 31, 2021. Expenses incurred in connection with R&E activities in the US must
be amortized over a 5 -year period if incurred, and R&E expenses incurred outside the US must be amortized over a 15-year period.
R&E activities are broader in scope than qualified research activities considered under IRC Section 41 (relating to the research
tax credit). For the year ended December 31, 2023, the Company performed an analysis based on available guidance and determined that
it will continue to be in a loss position even after the required capitalization and amortization of its R&E expenses. We will continue
to monitor this issue for future developments, but we do not expect R&E capitalization and amortization to require us to pay cash
taxes now or in the near future.

 For
the year ended December 31, 2023, we experienced a loss; therefore, no income tax provision was recorded for the year ended December
31, 2023.

 Other
Income Tax Matters

 Code
Section 382 places a limitation ("Section 382 Limitation") on the amount of taxable income that can be offset by NOL carryforwards
after a change in control (generally greater than 50% change in ownership within a three-year period) of a loss corporation. California
has similar rules. Generally, after a control change, a loss corporation cannot deduct NOL carryforwards in excess of the Section 382
Limitation. Due to these "change in ownership" provisions, utilization of the NOL and tax credit carryforwards may be subject
to an annual limitation regarding their utilization against taxable income in future periods.

 AgeX
and its subsidiaries may be subject to potential income tax examination by U.S. federal or states authorities. These potential examinations
may include inquiries regarding the timing and amount of deductions, and compliance with U.S. federal and state tax laws. AgeX filed
its first consolidated federal tax return in 2018. AgeX and its current subsidiaries are not subject to tax examination by federal tax
authorities for tax years beginning before 2020 and for state tax authorities beginning before 2019. However, the tax authorities may
still make adjustments to the net operating loss and credit carryforwards used in open years by AgeX or any of its subsidiaries. Any
potential examinations may include inquiries regarding the timing and amount of deductions, and compliance with U.S. federal and state
tax laws.

 10.
 Commitments and Contingencies

 Office
Lease Agreement

 AgeX
leased office space in Alameda, California. For 2022, base monthly rent was $ 1,074 and for 2023, base monthly rent is $ 844 for slightly
less space at the same building. The lease also includes office furniture rental, janitorial services, utilities, and internet service.

 ASC

 For
the office lease, AgeX has elected to not apply the recognition requirements under ASC 842 and instead recognized the lease payments
as lease costs on a straight-line basis over the lease term, as the amount of the lease payments is not deemed material.

 There
were no future minimum lease commitments as of December 31, 2023.

 Litigation
– General

 AgeX
is subject to various claims and contingencies in the ordinary course of its business, including those related to litigation, business
transactions, employee-related matters, and others. When AgeX is aware of a claim or potential claim, it assesses the likelihood of any
loss or exposure. If it is probable that a loss will result and the amount of the loss can be reasonably estimated, AgeX will record
a liability for the loss. If the loss is not probable or the amount of the loss cannot be reasonably estimated, AgeX discloses the claim
if the likelihood of a potential loss is reasonably possible and the amount involved could be material. AgeX is not aware of any claim
for which a liability has not been accrued and which is likely to have a material adverse effect on its financial condition or results
of operations.

 Tax
Filings

 AgeX
tax filings are subject to audit by taxing authorities in jurisdictions where it conducts business. These audits may result in assessments
of additional taxes that are subsequently resolved with the authorities or potentially through the courts. Management believes AgeX has
adequately provided for any ultimate amounts that are likely to result from these audits; however, final assessments, if any, could be
significantly different than the amounts recorded in the consolidated financial statements.

 Employment
Contracts

 AgeX
has entered into employment contracts with certain executive officers. Under the provisions of the contracts, AgeX may be required to
incur severance obligations for matters relating to changes in control, as defined, and involuntary terminations.

 Indemnifications

 In
the normal course of business, AgeX may provide indemnifications of varying scope under AgeX's agreements with other companies
or consultants, typically for AgeX's research and development programs. Pursuant to these agreements, AgeX will generally agree
to indemnify, hold harmless, and reimburse the indemnified parties for losses and expenses suffered or incurred by the indemnified parties
arising from claims of third parties in connection with AgeX's research and development. Indemnification provisions could also
cover third-party infringement claims with respect to patent rights, copyrights, or other intellectual property licensed from AgeX to
third parties. Office and laboratory leases will also generally indemnify the lessor with respect to certain matters that may arise during
the term of the lease. A sales agreement between AgeX and Chardan Capital Markets, LLC also included indemnification provisions pursuant
to which the parties agreed to indemnify each other from certain liabilities that could arise from the offer and sale of AgeX common
stock, including liabilities under the Securities Act. Similarly, the Registration Rights Agreement between Juvenescence and AgeX includes
indemnification provisions pursuant to which the parties will indemnify each other from certain liabilities in connection with the registration,
offer, and sale of securities under a registration statement, including liabilities arising under the Securities Act. AgeX has also agreed
to provide the AST Indemnity and ETC Indemnity pursuant to the Letter of Indemnification and ETC Letter of Indemnity described in Note
5, Related Party Transactions. The term of these indemnification obligations will generally continue in effect after the termination
or expiration of the particular license, lease, or agreement to which they relate. The potential future payments AgeX could be required
to make under these indemnification agreements will generally not be subject to any specified maximum amount. Historically, AgeX has
not been subject to any claims or demands for indemnification. AgeX also maintains various liability insurance policies that limit AgeX's
financial exposure and in the case of the AST Indemnity and ETC Indemnity AgeX has received cross-indemnities from Juvenescence against
all claims, damages, liabilities or losses arising out of the AST Indemnity and ETC Indemnity. As a result, AgeX believes the fair value
of these indemnification agreements is minimal. Accordingly, AgeX has not recorded any liabilities for these agreements as of December
31, 2023 and 2022.

 Notice
of Delisting

 On
April 20, 2023, AgeX received a letter (the "2023 Deficiency Letter") from the staff of the Exchange indicating that AgeX
does not meet certain of the Exchange's continued listing standards as set forth in Sections 1003(a)(i), (ii), and (iii) of the
Exchange Company Guide in that AgeX has stockholders equity of less than (A) $ 2,000,000 and has incurred losses from continuing operations
and/or net losses during its two most recent fiscal years, (B) $ 4,000,000 and has incurred losses from continuing operations and/or net
losses during three out of four of its most recent fiscal years, and (C) $ 6,000,000 or more and has reported losses from continuing operations
and/or net losses in its five most recent fiscal years. The 2023 Deficiency Letter states that as AgeX remains subject to the conditions
set forth in prior letters from the Exchange with respect to AgeX's deficiencies in stockholders equity, and if AgeX is not in
compliance with all of the Exchange's stockholders equity standards, or does not make progress consistent with AgeX's Exchange
approved plan to come into compliance with the Exchange's continued listing standards, by May 17, 2023, the Exchange will initiate
delisting proceedings as appropriate.

 On
May 17, 2023 AgeX received a notice from the staff of the Exchange indicating that they intend to commence proceedings to delist AgeX
common stock from the Exchange based upon AgeX's non-compliance with the stockholders' equity requirements set forth in Sections
1003(a)(i), (ii) and (iii) of the Exchange's Company Guide by the end of a compliance plan period that expired on May 17, 2023.
Specifically, AgeX did not meet the continued listing standards because it had stockholders equity of less than (A) $ 2,000,000 and has
incurred losses from continuing operations and/or net losses during its two most recent fiscal years, (B) $ 4,000,000 and has incurred
losses from continuing operations and/or net losses during three out of four of its most recent fiscal years, and (C) $ 6,000,000 or more
and has reported losses from continuing operations and/or net losses in its five most recent fiscal years.

 On
May 24, 2023, AgeX filed a request for a review of the delisting determination by a Committee of the Board of Directors of the Exchange.
On May 31, 2023, AgeX received a notice from the staff of the Exchange which scheduled a hearing for July 25, 2023. On July 24, 2023,
AgeX issued shares of preferred stock to Juvenescence in exchange for the extinguishment of $ 36 million of indebtedness owed to Juvenescence
for the purpose of remediating the deficiency in stockholders equity, and the hearing at the Exchange scheduled for July 25 was cancelled.
See Note 7, Stockholders' Equity/(Deficit), for further discussion on the classification of preferred stock and amendment
to Section 3(b) of the terms of the Series A Preferred Stock and Series B Preferred Stock.

 11.
 Subsequent Events

 On February
9, 2024, AgeX and Juvenescence executed a Sixth Amendment to Amended and Restated Convertible Promissory Note (the "Sixth Amendment")
that extends to May 9, 2024 the "Repayment Date" on which the outstanding principal balance and accrued loan origination
fees will become due and payable pursuant to the 2022 Secured Note.

 From January 1 through March 20, 2024, AgeX
drew in the aggregate $ 5,800,000 of its credit available under the 2022 Secured Note with Juvenescence.

 On
February 1, 2024, all outstanding shares of Series A Preferred Stock and Series B Preferred Stock automatically converted into a total
of 1,421,666
 shares of AgeX common stock in accordance with
their terms and after that conversion no shares of AgeX Preferred Stock remained outstanding. Those shares of common stock issued to
Juvenescence increased Juvenescence's direct and indirect holding of outstanding shares of AgeX common stock to 1,889,323
 shares, or approximately 75.6 %
of the shares of common stock outstanding on March 14, 2024, including shares of AgeX common stock held by Juvenescence's subsidiaries
but not taking into account any additional shares of AgeX common stock that Juvenescence may acquire through the conversion of loan balances
and the exercise of AgeX common stock purchase warrants or Post-Merger Warrants that were distributed on March 19, 2024.

 At
the Special Meeting of stockholders on March 14, 2024, AgeX stockholders approved certain matters required for the Merger to be consummated
in accordance with the terms of the Merger Agreement. On February 16, 2024, holders of outstanding Serina voting securities approved
certain matters required for the Merger to be consummated in accordance with the terms of the Merger Agreement.

 On
March 14, 2024, AgeX implemented the 1 for 35.17 Reverse Stock Split of its common stock. See Note 1, Organization, Basis of Presentation
and Liquidity.

 On
March 19, 2024, AgeX issued the Post-Merger Warrants to each holder of AgeX common stock as of the dividend record date, March
18, 2024.

 Item
9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

 Not

 Item
9A. Controls and Procedures

 Evaluation
of Disclosure Controls and Procedures

 It
is management's responsibility to establish and maintain adequate internal control over all financial reporting pursuant to Rule
13a-15 under the Exchange Act. Our management, including our principal executive officer and our principal financial officer, have reviewed
and evaluated the effectiveness of our disclosure controls and procedures as of the end of our fourth quarter. Following this review
and evaluation, management collectively determined that our disclosure controls and procedures are effective to ensure that information
required to be disclosed by us in reports that we file or submit under the Exchange Act (i) is recorded, processed, summarized and reported
within the time periods specified in SEC rules and forms; and (ii) is accumulated and communicated to management, including our chief
executive officer and our chief financial officer, as appropriate to allow timely decisions regarding required disclosure.

 Changes
in Internal Control over Financial Reporting

 There
were no changes in our internal control over financial reporting that occurred during the fourth quarter of our fiscal year ended December
31, 2023 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

 Management's
Report on Internal Control over Financial Reporting

 Our
management is responsible for establishing and maintaining adequate internal control over financial reporting. Internal control over
financial reporting, as defined in Exchange Act Rule 13a-15(f), is a process designed by, or under the supervision of, our principal
executive officer, our principal operations officer, and our principal financial officer, and effected by our Board of Directors, management,
and other personnel, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial
statements for external purposes in accordance with U.S. GAAP and includes those policies and procedures that:

 Pertain
 to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and dispositions of our assets;

 Provide
 reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with
 U.S. GAAP, and that our receipts and expenditures are being made only in accordance with authorizations of our management and directors;
 and

 Provide
 reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that
 could have a material effect on the financial statements.

of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Projections of any evaluation
of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that
the degree of compliance with the policies or procedures may deteriorate. All internal control systems, no matter how well designed,
have inherent limitations. Therefore, even those systems determined to be effective can provide only reasonable assurance with respect
to financial statement preparation and presentation.

 Our
management assessed the effectiveness of our internal control over financial reporting as of December 31, 2023, based on criteria established
in the 2013 Internal Control – Integrated Framework issued by COSO. Based on this assessment, management believes that, as of that
date, our internal control over financial reporting was effective.

 Item
9B. Other Information

 (a)
Warrant Dividend and Entry into Warrant Agreement

 On
March 19, 2024, AgeX issued to each stockholder of record as of the close of business on March 18, 2024 (the "Warrant Dividend
Record Date") three warrants (each, a "Post-Merger Warrant") for each five shares of AgeX common stock issued and outstanding
held by a stockholder of record as of the Warrant Dividend Record Date. Each Post-Merger Warrant will be exercisable at an exercise price
equal to $13.20 per warrant (such exercise price reflecting the Reverse Stock Split) for (i) one share of AgeX common stock and (ii)
one warrant (each, an "Incentive Warrant") and will expire on July 31, 2025. Each Incentive Warrant will be exercisable at
an exercise price equal to $18.00 per warrant (such exercise price reflecting the Reverse Stock Split) for one share of AgeX common stock
and will expire on the four-year anniversary of closing of the Merger.

 Each
Post-Merger Warrant was issued and each Incentive Warrant will be issued pursuant to the terms of the warrant agreement, dated as of
March 19, 2024 (the "Warrant Agreement"), by and between AgeX and Equiniti Trust Company, LLC, a New York limited liability
company, as warrant agent (the "Warrant Agent"). No fractional warrants were issued. The number of Post-Merger Warrants issued
to a stockholder of record were rounded down to the nearest whole number if such holder was entitled to receive a fractional warrant.

 Registration
Requirements. AgeX agreed to use its commercially reasonable efforts to maintain the effectiveness of the registration statement
on Form S-4/S-1 (Registration No. 333-275536), and a current prospectus relating thereto, until the expiration of the warrants in accordance
with the provisions of the Warrant Agreement.

 In
addition, AgeX agreed that as soon as practicable, but in no event later than 30 business days after the closing of the Merger, it will
use its best efforts to file with the SEC a registration statement for the registration under the Securities Act of the resale of the
shares of AgeX common stock issuable upon the exercise of (i) the Post-Merger Warrants and (ii) the Incentive Warrants. AgeX also agreed
to use its best efforts to cause such registration statement to become effective within 60 business days after the closing of the Merger
and to use its commercially reasonable efforts to maintain the effectiveness of such registration statement, and a current prospectus
relating thereto, until the earliest of the following: (a) when a registration statement covering such shares becomes or has been declared
effective by the SEC and such shares have been sold or disposed of pursuant to such effective registration statement; (b) when such shares
have been sold or disposed of pursuant to Rule 144 under the Securities Act (or any successor or similar provision adopted by the SEC
then in effect) under circumstances in which all of the applicable conditions of Rule 144 (as then in effect) are met; (c) when such
shares become eligible for resale without volume or manner-of-sale restrictions pursuant to Rule 144 and without the requirement for
AgeX to be in compliance with the current public information requirement under Rule 144, as reasonably determined by counsel to AgeX;
(d) when such shares are held by AgeX; or (e) when such shares have been sold or disposed of in a private transaction in which the transferor's
rights under the Warrant Agreement are not assigned to the transferee of such securities.

 Warrant
Exercise. Each warrant may be exercised by the holder in lawful money of the United States.

 Maximum
Percentage. A holder of a Post-Merger Warrant or Incentive Warrant will be able to notify AgeX in writing in the event such person
elects to be subject to the requirement that such holder will not have the right to exercise such warrant, to the extent that after giving
effect to such exercise, such person (together with such person's affiliates), to the Warrant Agent's actual knowledge, would
beneficially own in excess of 9.999% (or such other amount as a holder may specify) of the shares of AgeX common stock outstanding immediately
after giving effect to such exercise.

 Stock
Dividends. If the number of outstanding shares of AgeX common stock is increased by a stock dividend payable in shares of AgeX
common stock to all or substantially all holders of AgeX common stock, or by a split-up of shares of AgeX common stock or other similar
event, then, on the effective date of such stock dividend, split-up or similar event, the number of shares of AgeX common stock issuable
on exercise of each Post-Merger Warrant and Incentive Warrant will be increased in proportion to such increase in the outstanding shares
of AgeX common stock.

 Aggregation
of Shares. If the number of outstanding shares of AgeX common stock is decreased by a consolidation, combination, reverse stock
split or reclassification of shares of AgeX common stock or other similar event, then, on the effective date of such consolidation, combination,
reverse stock split, reclassification or similar event, the number of shares of AgeX common stock issuable on exercise of each Post-Merger
Warrant or Incentive Warrant will be decreased in proportion to such decrease in outstanding shares of AgeX common stock.

 Adjustments
in Exercise Price. Whenever the number of shares of AgeX common stock purchasable upon the exercise of a Post-Merger Warrant
or Incentive Warrant is adjusted, as described above, the applicable warrant exercise price will be adjusted by multiplying the applicable
warrant exercise price immediately prior to such adjustment by a fraction (x) the numerator of which will be the number of shares of
AgeX common stock purchasable upon the exercise of such warrant immediately prior to such adjustment, and (y) the denominator of which
will be the number of shares of AgeX common stock so purchasable immediately thereafter.

 Replacement
of Securities upon Reorganization, etc. In case of any reclassification or reorganization of the outstanding shares of AgeX common
stock (other than those described under "—Stock Dividends" and "—Aggregation of Shares" above or
that solely affects the par value of such shares of AgeX common stock), or in the case of any merger or consolidation of AgeX with or
into another corporation (other than a consolidation or merger in which AgeX is the continuing corporation and that does not result in
any reclassification or reorganization of the outstanding shares of AgeX common stock), or in the case of any sale or conveyance to another
corporation or entity of the assets or other property of AgeX as an entirety or substantially as an entirety in connection with which
AgeX is dissolved, a holder of a Post-Merger Warrant or Incentive Warrant will thereafter have the right to purchase and receive, upon
the basis and upon the terms and conditions specified in such warrant and in lieu of the shares of AgeX common stock immediately theretofore
purchasable and receivable upon the exercise of the rights represented thereby, the kind and amount of shares of stock or other securities
or property (including cash) receivable upon such reclassification, reorganization, merger or consolidation, or upon a dissolution following
any such sale or transfer, that the holder of such warrant would have received if such holder had exercised such warrant immediately
prior to such event. However, if such holder of AgeX common stock was entitled to exercise a right of election as to the kind or amount
of securities, cash or other assets receivable upon such consolidation or merger, then the kind and amount of securities, cash or other
assets for which each such warrant will become exercisable will be deemed to be the weighted average of the kind and amount received
per share by such holder of AgeX common stock in such consolidation or merger that affirmatively make such election, and if a tender,
exchange or redemption offer will have been made to and accepted by such holder of AgeX common stock under circumstances in which, upon
completion of such tender or exchange offer, the maker thereof, together with members of any group (within the meaning of Rule 13d-5(b)(1)
under the Exchange Act) of which such maker is a part, and together with any affiliate or associate of such maker (within the meaning
of Rule 12b-2 under the Exchange Act) and any members of any such group of which any such affiliate or associate is a part, own beneficially
(within the meaning of Rule 13d-3 under the Exchange Act) more than 50% of the outstanding AgeX common stock, the holder of a Post-Merger
Warrant or Incentive Warrant will be entitled to receive the highest amount of cash, securities or other property to which such holder
would actually have been entitled as a stockholder if such warrant holder had exercised the Post-Merger Warrant or Incentive Warrant
prior to the expiration of such tender or exchange offer, accepted such offer and all of the AgeX common stock held by such holder had
been purchased pursuant to such tender or exchange offer, subject to adjustments (from and after the consummation of such tender or exchange
offer) as nearly equivalent as possible to the adjustments provided for in the Warrant Agreement. Additionally, if less than 70% of the
consideration receivable by the holders of AgeX common stock in such a transaction is payable in the form of AgeX capital stock or shares
in the successor entity that is listed for trading on a national securities exchange or is quoted in an established over-the-counter
market, or is to be so listed for trading or quoted immediately following such event, and if the registered holder of the Post-Merger
Warrant or Incentive Warrant properly exercises such warrant within 30 days following public disclosure of the consummation of such transaction,
the applicable exercise price of such warrant will be reduced by an amount (in dollars) equal to the difference of (i) the applicable
exercise price in effect prior to such reduction minus (ii) (A) the per share consideration (as defined in the Warrant Agreement) (but
in no event less than zero) minus (B) the Black-Scholes Warrant Value (as defined in the Warrant Agreement).

 No
Fractional Warrants. No fractional warrants will be issued. If the holder of any Post-Merger Warrant would be entitled to receive
a fractional Incentive Warrant upon the exercise of a Post-Merger Warrant, AgeX will round down to the nearest whole number the number
of Incentive Warrants to be issued to such holder.

 No
Fractional Shares. Notwithstanding any provision contained in the Warrant Agreement to the contrary, no fractional shares of
AgeX common stock will be issued upon the exercise of Post-Merger Warrants or Incentive Warrants. If, by reason of any adjustment under
the terms of the Warrant Agreement, the holder of any Post-Merger Warrant or Incentive Warrant would be entitled, upon the exercise of
such warrant, to receive a fractional interest in a share, AgeX will, upon such exercise, round down to the nearest whole number the
number of shares of AgeX common stock to be issued to such holder.

 Other
Events. In case any event shall occur affecting AgeX as to which none of the adjustment provisions of the Warrant Agreement are
strictly applicable, but which would require an adjustment to the terms of the Post-Merger Warrants or Incentive Warrants in order to
(i) avoid an adverse impact on such warrants and (ii) effectuate the intent and purpose of the adjustment provisions of the Warrant Agreement,
then, in each such case, AgeX will agree to appoint a firm of independent public accountants, investment banking or other appraisal firm
of recognized national standing, which will give its opinion as to whether or not any adjustment to the rights represented by the Post-Merger
Warrants or Incentive Warrants is necessary to effectuate the intent and purpose of the adjustment provisions of the Warrant Agreement
and, if they determine that an adjustment is necessary, the terms of such adjustment. AgeX will agree to adjust the terms of the Post-Merger
Warrants or Incentive Warrants in a manner that is consistent with any adjustment recommended in such opinion.

 Transfer
of Warrants. The Post-Merger Warrants are and the Incentive Warrants will be non-transferrable, other than through a Permitted
Transfer (as defined below). The Post-Merger Warrants are not and the Incentive Warrants will not be listed on any quotation system or
traded on any securities exchange. For purposes of the Warrant Agreement, the term "Permitted Transfer" will mean a transfer
of a Post-Merger Warrant or Incentive Warrant (a) upon death of the holder by will or intestacy; (b) pursuant to a court order; (c) by
operation of law (including by consolidation or merger) or without consideration in connection with the dissolution, liquidation or termination
of any corporation, limited liability company, partnership or other entity; (d) in the case of Post-Merger Warrants or Incentive Warrants
held by Juvenescence to any affiliate of, or third party nominated by Juvenescence, provided that Juvenescence shall remain responsible
for the obligations of Juvenescence under the Side Letter; or (e) in the case of such warrant being held in book-entry or other similar
nominee form, from a nominee to a beneficial owner and, if applicable, through an intermediary, to the extent allowable by the depository;
provided; however, that the permitted transferee will need to enter into a written agreement with AgeX agreeing to be bound by the
transfer restrictions in Warrant Agreement.

 The
foregoing description of the Post-Merger Warrants, Incentive Warrants and the Warrant Agreement is only a summary and is qualified in
its entirety by reference to the full text of the Form of Post-Merger Warrant, Form of Incentive Warrant and the Warrant Agreement, copies
of which are attached to this Report as Exhibit 4.4, Exhibit 4.5 and Exhibit 10.49 and each is incorporated herein by reference.

 (b)
 Trading Arrangement Disclosure

the fourth quarter of the fiscal year ended December 31, 2023, none of AgeX's officers or directors adopted or terminated a "Rule
10b5–1 trading arrangement" or a "non-Rule 10b5–1 trading arrangement" as such terms are defined in Item
408(a) of SEC Regulation S-K.

 (c)
2022 Secured Note Transactions

 On
March 20, 2024, AgeX drew $900,000 of its credit available under the 2022 Secured Note.

 Item
9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

 Not

 PART
III

 Item
10. Directors, Executive Officers, and Corporate Governance

 Our
Current Directors

 The
following table sets forth information regarding our Board of Directors as of March 14, 2024. If the Merger is consummated, the membership
of our Board of Directors will change, and we expect that Gregory H. Bailey and Steven Mintz will be the only current AgeX directors
who will continue to serve as directors of the Combined Company after the Merger. See " Initial Post-Merger Directors "
for information about the persons we expect initially to serve as directors of the Combined Company after consummation of the Merger.

 Committee
 Membership

 Name
 of Director

 Age

 Since

 Audit

 Nominating
 and

 Corporate

 Governance

 Non-Employee

 H. Bailey, M.D.

 August
 2018

 Chair

 M. Hackett, Ph. D.

 December
 2021

 Jean-Christophe
 Renondin, M.D.

 August
 2023

 Chair

 Steven
 Mintz

 January
 2024

 Chair

H. Bailey, M.D. joined our Board of Directors in August 2018 and served as the Chairman of our Board of Directors from October 2018
until May 2022. Dr. Bailey is currently Executive Chairman of Juvenescence Limited. From October 2017 until January 2023 Dr. Bailey served
as the Chief Executive Officer of Juvenescence Limited, a privately held company focused on the development of therapies for ageing and
age-related diseases. Dr. Bailey is also a director of Manx Financial Group, plc, BioHaven Inc, SalvaRx Inc and Portage Biotech. Dr.
Bailey has founded and served as a director of a number of private and public companies and previously served as a managing partner of
Palantir Group, Inc., a merchant bank involved in a number of biotech company startups and financings. Dr. Bailey practiced emergency
medicine for ten years before entering finance. Dr. Bailey received his M.D. from the University of Western Ontario. We believe that
Dr. Bailey is qualified to serve on our Board based on his years of experience in medicine and as an executive and in finance for the
biotechnology industry.

M. Hackett, Ph. D. joined our Board of Directors in December 2021 and became the Chairperson of our Board of Directors in May
2022, and Interim Chief Executive Officer in August 2023. Dr. Hackett is currently the Head of Genomic and Precision Medicine at IQVIA.
IQVIA is a world leader in using data, technology, advanced analytics, and expertise to help customers drive healthcare forward. From
2017 to 2020 Dr. Hackett served as Chief Commercial Officer of Genomics England, where she engaged industry, academia and the clinical
community to achieve the goal of sequencing genomes of patients and families of patients with rare diseases, and patients with common
cancers. Genomics England is owned by the Department of Health and Social Care in the United Kingdom. During 2016 and 2017 Dr. Hackett
served as Chief Commercial Officer and Interim Chief Executive Officer of Precision Medicine Catapult, which was established in the United
Kingdom with the goal of developing, delivering and commercializing precision medicine. Dr. Hackett served as Director of Commercial
Development for UCLPartners in London, England from 2013 – 2016. UCLPartners is focused on co-creating, testing and implementing
innovative healthcare solutions with its academic and healthcare partners, and fostering the wider spread and adoption of those solutions.
Previously, she served as Chief Operating Officer and Research Lead at Cambridge University Health Partners, and she has held other positions
in the biomedical industry and in academia, including as a research scientist, and she has served on a number of advisory committees
and advisory boards in the biomedical and healthcare fields. Dr. Hackett holds a PhD in Molecular Genetics from the University of New
Brunswick. Dr. Hackett's years of Ie in genomics and regenerative medicine with a focus on commercialization of new therapies and
technologies makes her an excellent candidate to serve on our Board of Directors and as Interim Chief Executive Officer.

 Jean-Christophe
Renondin, M.D. joined our Board of Directors during August 2023. Dr. Renondin is Managing Partner at Vesalius Biocapital, a venture
capital firm. From 2015 to 2022, Dr. Renondin served as Senior Healthcare Manager at the Sovereign Fund of Oman where he implemented
investment strategy and pursued investment opportunities in North America, Europe and Asia. Dr. Renondin has served in management roles
at a number of healthcare and investment firms, including serving for five years as managing director of Bryan Garnier & Co. Dr.
Renondin served as a director of Cognate Bioservices Limited, a company in the business of contract development and manufacturing, specializing
in cell and cell-mediated gene therapy products, which is now owned by Charles River Laboratories International, as a director of Juvenescence
Limited from March 2020 until June 2023, and as a director of Viscogliosi Brothers Acquisition Corp. Dr. Renondin received an MBA degree
from the Tuck School of Business at Dartmouth University and an MD degree from Universite Paris Cite. We believe that Dr. Renondin is
qualified to serve on our Board based on his years of management experience in healthcare, investment, and finance.

 Steven
Mintz joined our Board of Directors during January 2024. Mr. Mintz has been a self-employed financial consultant since 1998 serving
both private individuals and companies, as well as public companies in a variety of industries including mining, oil and gas, real estate
and investment strategies. He is currently President of St. Germain Capital Corp., a private consulting and investment firm. He is also
a principal and CFO of the Minkids Group, a family investment and development company. Mr. Mintz is currently a director of Portage Biotech,
Inc., a clinical-stage immuno-oncology company advancing multi-targeted therapies for cancer. Mr. Mintz previously served as a director
of IM Cannabis (formerly Navasota Resources). Mr. Mintz graduated from the University of Toronto in 1989 and obtained his C.A. designation
in June of 1992.

 Initial
Post-Merger Directors

 The
following table provides information regarding the expected directors of the Combined Company following the closing of the Merger:

 Name

 Age

 Position

 Steve
 Ledger

 Chief Executive Officer and Class II Director

 Non-Employee

 H. Bailey, M.D.

 Chairman
 of the Board and Class III Director

 Steven
 Mintz

 Class
 I Director

 Remy
 Gross

 Class
 I Director

 J.
 Milton Harris, Ph. D.

 Class
 II Director

 Richard
 Marshall, BDE, M.D., Ph. D.

 Class
 III Director

 Steve
Ledger has served as Serina's Chief Financial Officer since June 2021 and as a member of the Serina Board of Directors since
December 2022, and is expected to serve as Interim Chief Executive Officer and as a Class II Director of the Combined Company following
consummation of the Merger. Serina has engaged an executive search firm to recruit a permanent Chief Executive Officer for AgeX to serve
after the Merger. Mr. Ledger will cease to be the Interim Chief Executive Officer but will remain as a Class II Director upon the hiring
of the Chief Executive Officer. Mr. Ledger has more than 35 years of experience as an investor, board member, advisor, and in operational
roles with early-stage companies. From 2018 to the present, Mr. Ledger serves as Managing Partner of Form & Fiction Ventures, Inc.
(FFV), a venture studio that launches and invests in startup and seed stage companies focused on socially responsible initiatives. Mr.
Ledger is a co-founder and board director of Entourage Genomics, Inc., a bioinformatics software company formed by FFV in June 2023.
From 2018 to February 2022, Mr. Ledger served as an advisor at Caldwell Sutter Capital, Inc., an SEC registered broker dealer and investment
management firm focused on value-based equity and debt securities. From 2002 to 2012, Mr. Ledger was the founder and managing member
of Tamalpais Partners, LLC, the general partner to funds focused on special situations in the small capitalization public equity markets.
Mr. Ledger received a B.A. in Economics from the University of Connecticut.

 Non-Employee

H. Bailey, M.D. Information concerning Dr. Bailey can found above under " Our Current Directors."

 Steven
Mintz. Information concerning Mr. Mintz can found above under " Our Current Directors."

 J.
Milton Harris, Ph. D. has served as Chair of the Serina Board of Directors since he co-founded Serina in 2006. Dr. Harris has more
than 30 years of experience as a senior life sciences executive. Prior to founding Serina, he was the Founder and Chief Executive Officer
of Shearwater Polymers, Inc. (Shearwater). Shearwater was founded by Dr. Harris in 1992 and sold in 2001 to Inhale Therapeutics, Inc.
(Inhale Therapeutics, Inc., subsequently changed its name to Nektar Therapeutics, Inc.). Shearwater successfully patented, manufactured,
and partnered PEG technology that enabled multiple drug products including Neulasta (Amgen) and Pegasys (Roche). Dr. Harris
has also served on the board of directors of HudsonAlpha Institute for Biotechnology since its founding in 2004. Dr. Harris earned a
B.S. from McGill University, where he also was awarded an honorary Sc. D., and a Ph. D. from the Massachusetts Institute of Technology.
Dr. Harris has co-authored more than 200 publications and is a co-inventor on more than 75 patents.

 Remy
Gross has served as Vice President, Business Development & Technology Advancement at the Buck Institute for Research (Buck) on
Aging from 2006. Mr. Gross has advised and helped create multiple new biopharmaceutical startups at Buck, including Unity Biotechnology,
Inc., Aeovian Therapeutics, Inc., and BhB Therapeutics, Inc. Prior to Buck, Mr. Gross held increasingly senior roles at Shearwater from
1994 to 2001, and at Nektar after its acquisition of Shearwater from 2001 to 2005, including Vice President of Operations. In 2013, Mr.
Gross co-founded RCP Companies, Inc., a boutique real estate company providing acquisition, development, and asset management. Mr. Gross
serves as a board director of BhB Therapeutics, Inc., Napa Therapeutics, Inc., and Selah Therapeutics, Inc. Mr. Gross serves on several
non-profit boards including MidCity Accelerator Foundation, Hatch HSV and k3innovation. Mr. Gross received a B.S. in Chemistry from Loyola
University New Orleans.

 Richard
Marshall, CBE, M.D., Ph. D. has served as the Chief Executive Officer of Juvenescence from January 2023. Dr. Marshall is a physician
scientist and highly experienced executive with a 20-year track record of leadership in pharmaceutical Research & Development. From
September 2019 to January 2023, Dr. Marshall was Senior Vice President and Global Head of Respiratory & Immunology Development at
AstraZeneca plc, overseeing the development and approval of five new medicines. This included the SARS CoV-2 vaccine, Vaxzevria,
and combination antibody, Evushield TM. In 2021 he was recognized in the Queen's Honours List with a CBE for his contribution
to UK science and the Covid response. From 2002 to 2018, Dr. Marshall held increasingly senior roles at GlaxoSmithKline plc, including
Vice President of Fibrosis R&D. Dr. Marshall received a Bachelor of Science in Neuroscience, a Bachelor of Medicine, a Bachelor of
Surgery, and a Doctor of Philosophy in Medical Sciences from University College London and has held visiting professor and honorary consultant
roles in thoracic medicine at Newcastle University and the Royal Brompton Hospital. Dr. Marshall has co-authored more than 60 original
publications in journals including The Lancet and The New England Journal of Medicine.

 Family
Relationships

 There
are no family relationships among any of the Combined Company's proposed directors and executive officers.

 Audit
Committee

 We
have established an Audit Committee of the Board of Directors. The members of the Audit Committee are Steven Mintz and Jean-Christophe
Renondin, each of whom qualifies as being "independent" under Section 8.03(A) and 8.03(B) of the NYSE American Company Guide
and under Rule 10A-3 of the Exchange Act. Michael May served on the Audit Committee during 2023 until his term as a director expired
and Joanne M. Hackett also served on the Audit Committee during 2023 until she was appointed Interim Chief Executive Officer. Steven
Mintz is the Chair of the Audit Committee. The purpose of the Audit Committee is to recommend the engagement of our independent registered
public accountants, to review their performance and the plan, scope, and results of the audit, and to review and approve the fees we
pay to our independent registered public accountants. The Audit Committee also will review our accounting and financial reporting procedures
and controls, and all transactions between us and our executive officers, directors, and stockholders who beneficially own 5% or more
of any class of our voting securities. We have adopted a written charter for our Audit Committee which we have posted on our website
at www.agexinc.com. The Board of Directors has also determined that Mr. Mintz is "financially sophisticated" within
the meaning of the rules and regulations of the NYSE American and qualifies as an "audit committee financial expert" as defined
under applicable rules and regulations of the SEC and the NYSE American.

 Code
of Ethics

 We
have adopted a Code of Business Conduct and Ethics ("Code of Ethics") that applies to our principal executive officers, our
principal financial officer and accounting officer, our other executive officers, and our directors. The purpose of the Code of Ethics
is to promote (i) honest and ethical conduct, including the ethical handling of actual or apparent conflicts of interest between personal
and professional relationships; (ii) full, fair, accurate, timely, and understandable disclosure in reports and documents that we file
with or submit to the SEC and in our other public communications; (iii) compliance with applicable governmental rules and regulations;
(iv) prompt internal reporting of violations of the Code of Ethics to an appropriate person or persons identified in the Code of Ethics;
and (v) accountability for adherence to the Code of Ethics. A copy of our Code of Ethics has been posted on our internet website and
can be found at www.agexinc.com. We intend to disclose any future amendments to certain provisions of our Code of Ethics, and
any waivers of those provisions granted to our principal executive officers, principal financial officer, principal accounting officer
or controller or persons performing similar functions, by posting the information on our website within four business days following
the date of the amendment or waiver.

 Information
About Our Executive Officers

 The
following table sets forth information regarding our executive officers as of March 14, 2024: If the Merger is consummated our executive
officers will change except that we expect that Andrea E. Park will continue to serve as an executive officer in the role of Interim
Chief Financial Officer and as Chief Accounting Officer. See, " Initial Executive Officers of the Combined Company After the
Merger" for information about the persons who we expect to serve as the initial executive officers of the Combined Company
after the consummation of the Merger.

 Name

 Age

 Officer
 Since

 Position

 M. Hackett, Ph. D.

 August
 2023

 Chief Executive Officer

 E. Park

 May
 2020

 Chief
 Financial Officer

 Hal
 Sternberg, Ph. D.

 August
 2017

 Vice
 President of Research

M. Hackett, Ph. D. was appointed Interim Chief Executive Officer on August 9, 2023. Her biographical information can be found above
with information about the other members of our Board of Directors.

E. Park, CPA (inactive) was appointed as our Chief Financial Officer in May 2020. Ms. Park served as our Vice President of Finance
and Controller since October 2019. Ms. Park's career spans over 24 years of public accounting and finance experience. Before joining
AgeX, Ms. Park served as Vice President of Finance and Controller from June 2016 to September 2019 and as Corporate Controller from August
2009 to June 2016 for Lineage Cell Therapeutics, Inc. (formerly BioTime, Inc.). While at Lineage, Ms. Park was directly involved in the
accounting and financial reporting of the public spin off and eventually the deconsolidation of three of its then subsidiaries including
Asterias Biotherapeutics, Inc., Oncocyte Corporation and AgeX. Earlier in her career she worked in the audit and assurance practice at
Deloitte. Ms. Park has a B.A. in Business Economics with Concentration in Accounting from the University of California, Santa Barbara.

 Hal
Sternberg, Ph. D. was appointed Vice President of Research in August 2017. Prior to serving in that role, Dr. Sternberg was Vice President
of Research of Lineage for over 25 years and was one of Lineage co-founders. Prior to co-founding and joining Lineage, Dr. Sternberg
held various positions at the University of California at Berkeley from 1982 to 1988, where he supervised a team of researchers studying
Alzheimer's Disease. Dr. Sternberg holds an M.S. in Chemistry and Ph. D. in Biochemistry from the University of Maryland.

 Initial
Executive Officers of the Combined Company After the Merger

 The
following table provides information regarding the persons we expect to serve as the initial executive officers of the Combined Company
following consummation of the Merger.

 Name

 Age

 Position

 Steve
 Ledger

 Chief Executive Officer and Class II Director

 E. Park

 Chief Financial Officer and Chief Accounting Officer

 Randall
 Moreadith, M.D., Ph. D.

 Chief
 Scientific Officer

 Tacey
 Viegas, Ph. D.

 Chief
 Operating Officer; Secretary

 Steve
Ledger. Information concerning Mr. Ledger can be found above under " Initial Post-Merger Directors."

E. Park, CPA (inactive) is the Chief Financial Officer of AgeX and will serve as the Interim Chief Financial Officer and Chief Accounting
Officer of the Combined Company after the Merger. Upon the hiring of a new Chief Financial Officer, Ms. Park will cease to be the Interim
Chief Financial Officer but will remain the Chief Accounting Officer. Further information concerning Ms. Park's career can be found
above under " Information About Our Executive Officers."

 Randall
Moreadith, M.D., Ph. D. has served as Serina's President and Chief Executive Officer and as a member of the Serina Board of
Directors since September 2010. Dr. Moreadith will serve as Chief Scientific Officer of the Combined Company. From July 2009 to December
2009, Dr. Moreadith was Chief Development Officer at Nektar Therapeutics (Nektar) where he led clinical and drug development programs
that successfully moved several of the Nektar's PEGylated small molecule drugs into clinical trials for four clinical indications
(ovarian, breast, cervical and colorectal cancer) and the out-licensing efforts for the approved product now known as Movantik.
Prior to Nektar, Dr. Moreadith served as the Executive Vice President and Chief Medical Officer of Cardium Therapeutics, Inc. where he
led the advancement of novel DNA-based adenoviral therapeutics into Phase IIb and Phase III late-stage development, from 2006 to 2008.
Prior to Cardium, Dr. Moreadith served as Chief Medical Officer of Renovis, Inc. where he led the Clinical, Regulatory and Quality Assurance
Groups in 2004 to 2005. From 1996 to 2003, Dr. Moreadith was co-Founder, President, and Chief Operating Officer of ThromboGenics, Ltd.
(now Oxurion), a leader in the field of thrombosis drug development. During his tenure at ThromboGenics, the company advanced four biologics
into mid-stage development, with one product later approved (Ocriplasmin). Dr. Moreadith received his M.D. from Duke University
and is trained clinically in Internal Medicine and Cardiovascular Diseases. Dr. Moreadith received his Ph. D. from Johns Hopkins University
and following his Fellowship in Cardiology at Duke University, he joined the laboratory of Professor Philip Leder where he was a Howard
Hughes Medical Institute Fellow in Genetics at Harvard Medical School. Dr. Moreadith was a member of the faculty of the University of
Texas Southwestern Medical Center.

 Tacey
Viegas, Ph. D. has served as Serina's Chief Operating Officer since 2006. Dr. Viegas will serve as Chief Operating Officer and
Secretary of the Combined Company. Dr. Viegas has managed the discovery and early development activities for both synthetically- and
biologically-derived therapeutic agents in the areas of oncology, neurology, influenza, psoriasis, and wound care. He has numerous patents
and publications in the area of polymer therapeutics and pharmaceutics. Prior to joining Serina, Dr. Viegas served as Senior Director
of Chemistry Manufacturing and Controls at Nektar. Prior to Nektar, Dr. Viegas was Executive Director in product development at Biocryst
Pharmaceuticals, Inc. (BioCryst). During his combined tenures at Nektar and BioCryst, he was a co-inventor of nalexogol (Movantik),
etirinotecan pegol and was involved in the early development of peramivir (Rapivab). Prior to Biocryst, Dr. Viegas was a Director,
Product Development at MDV Technologies, Inc. from 1989 to 1994. Dr. Viegas received his B.S. in Chemistry and Pharmacy from Bangalore
University, and his M.S. and Ph. D. in Pharmaceutical Sciences from the University of Mississippi.

 Delinquent
Section 16(a) Reports

 Section
16(a) of Exchange Act requires our directors and executive officers and persons who own more than ten percent (10%) of a registered class
of our equity securities ("Reporting Persons") to file with the SEC initial reports of ownership and reports of changes in
ownership of our common stock and other AgeX equity securities. Officers, directors and greater than ten percent beneficial owners are
required by SEC regulations to furnish us with copies of all reports they file under Section 16(a).

 To
our knowledge, based solely on our review of the copies of Forms 3 and 4 and amendments thereto filed during the last fiscal year by
the Reporting Persons, or written representation from the Reporting Persons that no Form 5 was required, all Section 16(a) filing requirements
applicable to our officers, directors, and greater than ten percent beneficial owners were complied with during the fiscal year ended
December 31, 2023, except that two Forms 4 were filed late by Juvenescence which owns more than 10% of the outstanding AgeX

 Item
11. Executive Compensation

 Emerging
Growth Company and Smaller Reporting Company

 We
are an "emerging growth company" as defined in the Jumpstart Our Business Startups Act of 2012 and a "smaller reporting
company" as defined in the rules and regulations of the SEC. As an emerging growth company and as a smaller reporting company we
may take advantage of specified reduced disclosure and other requirements that are otherwise applicable, in general, to public companies
that are not emerging growth companies or smaller reporting companies. Accordingly, this Report includes reduced disclosure about our
executive compensation arrangements.

 Summary
Compensation Table

 The
following table sets forth the compensation awarded to, earned by, or paid to AgeX's Chief Executive Officer during fiscal year
2023 and the two highest paid individuals who were serving as executive officers as of December 31, 2023 (AgeX's Named Executive
Officers) in respect of their service to AgeX for the fiscal years ended December 31, 2023 and 2022.

 Name and principal position

 Year

 Salary

 Option
 Awards (1)

 All Other
 Compensation (2)

 Total

 Joanne M. Hackett (3)

 2023

 $
 63,227

 $
 -

 $
 39,623
 (4)

 $
 102,850

 Interim Chief Executive Officer

 2022

 -

 47,325

 55,740
 (4)

 103,065

 Michael D. West (5)

 2023

 520,945

 448,824

 89,500
 (6)

 1,059,269

 Chief Executive Officer

 2022

 546,782

 -

 15,250

 562,032

 Andrea E. Park

 2023

 284,339

 -

 14,217

 298,556

 Chief Financial Officer

 2022

 281,228

 -

 14,061

 295,289

 Nafees N. Malik (7)

 2023

 282,272

 19,879

 -

 302,151

 Chief Operating Officer

 2022

 282,272

 -

 -

 282,272

 (1)

 Amounts
 shown in this column do not reflect dollar amounts actually received by AgeX's Named
 Executive Officers. Instead, these amounts reflect the aggregate grant date fair value of
 each stock option granted, computed in accordance with the provisions of FASB ASC Topic 718,
 Compensation-Stock Compensation. AgeX used the Black-Scholes Pricing Model to compute
 option fair values based on applicable exercise and stock prices, an expected option term,
 volatility assumptions, and risk-free interest rates. AgeX's Named Executive Officers
 will only realize compensation upon exercise of the stock options and to the extent the trading
 price of AgeX's common stock is greater than the exercise price of such stock options
 at the time of exercise. For Dr. West, the amount in this column also reflects the incremental
 fair value incurred in connection with the extension of the exercise period of 37,816 of
 Dr. West's stock options from 90 days to four years following his termination. For
 Dr. Malik, the amount in this column also reflects the incremental fair value incurred in
 connection with the acceleration of vesting and extension of the expiration date of options
 to purchase 13,807 shares of AgeX common stock.

 Except
 as otherwise disclosed below, one fourth of the options will vest upon completion of 12 full months of continuous employment measured
 from the date of grant, and the balance of the options vest in 36 equal monthly installments commencing on the first anniversary
 of the date of grant, based on the completion of each month of continuous service as an employee or director of AgeX or its subsidiaries.

 (2)

 Amounts
 represent 401(k) matching contributions by AgeX for the periods presented unless described otherwise in the footnotes below.

 (3)

 Dr.
 Hackett joined our Board of Directors on December 29, 2021 as a non-employee director, and was appointed as Interim Chief Executive
 Officer on August 9, 2023. On February 2, 2022, Dr. Hackett was awarded 1,848 stock options which had a fair value of $47,325 on
 the grant date for her service as a director. These options became exercisable in four equal calendar quarters and were fully vested
 as of December 31, 2022.

 (4)

 Represents
 the amount paid to Dr. Hackett in respect of her service on our Board of Directors prior to becoming our Interim Chief Executive
 Officer.

 (5)

 Dr.
 West served as our Chief Executive Officer until August 9, 2023 and as Chief Executive Officer for Reverse Bio until October 31,
 2023. Dr. West's salary includes $67,039 for unused vacation hours.

 (6)

 $73,000
 of such amount represents the estimated fair market value of certain laboratory equipment transferred to Dr. West in accordance with
 the terms of a Transition Services and Separation Agreement.

 (7)

 Dr.
 Malik served as our Chief Operating Officer through December 27, 2023. Dr. Malik served as a consultant, with his services provided
 by Juvenescence. Dr. Malik devoted a majority of his time to AgeX's operations and AgeX reimbursed Juvenescence for his services.

Agreements and Change of Control Provisions

M. Hackett: On August 9, 2023, we entered into a Consulting Agreement with Dr. Hackett for her services as our Interim Chief
Executive Officer. Pursuant to that agreement she will receive a fee in the amount of $160,000 per year for services rendered as Interim
Chief Executive Officer. Dr. Hackett will not be eligible to participate in any AgeX retirement, pension, life, health, accident and
disability insurance, or other similar employee benefit plans for AgeX executive officers or employees other than the Incentive Plan.

 Michael
D. West: AgeX and Dr. West were party to an employment agreement, effective October 18, 2018 (the West Employment Agreement).
Pursuant to the West Employment Agreement, Dr. West's annual base salary was initially set at $525,000. Under the West Employment
Agreement, Dr. West was eligible to earn an annual incentive cash bonus with a target of no less than 50% of annual base salary. Actual
bonus amounts were based on Dr. West's attainment of individual performance goals at target levels set by the AgeX Board for the
applicable calendar year. If such performance goals for the applicable year were fully achieved, the AgeX Board could approve a bonus
amount exceeding the target bonus level.

 Under
the West Employment Agreement, Dr. West was granted options to purchase 14,217 shares of AgeX's common stock with an exercise price
of $105.51 per share, with one fourth of the options vesting following 12 full months of continuous service as an employee of AgeX, measured
from the date of grant, and the balance vesting in 36 equal monthly installments commencing on the first anniversary of the date of grant,
based upon the completion of each month of continuous service as an employee of AgeX.

 On
August 9, 2023, AgeX and Dr. West entered into a Transition Services and Separation Agreement (the "Transition
Agreement") pursuant to which Dr. West stepped down as Chief Executive Officer of AgeX but agreed to continue to serve as
Chief Executive Officer and as a director of AgeX's subsidiary Reverse Bio during a "Transition Period." The
Transition Period ended on October 31, 2023. Pursuant to the Transition Services and Release Agreement, AgeX agreed to transfer to
Dr. West title to certain laboratory and other equipment that AgeX has fully amortized for financial reporting purposes, and Dr.
West's AgeX stock options that were vested as of October 31, 2023 will remain exercisable until October 9, 2027; provided,
that Dr. West's out of the money options were cancelled during March 2024 to comply with certain provisions of the Merger
Agreement.

 Under
the West Employment Agreement, and as affirmed in the Transition Agreement, Dr. West has agreed to certain covenants regarding confidential
information and assignment of inventions, as well as a covenant not to solicit AgeX's employees during Dr. West's employment
with AgeX and for one year thereafter. The West Employment Agreement also includes a covenant not to compete with AgeX during his employment.

E. Park: We have entered into an employment agreement with our Chief Financial Officer Andrea E. Park, effective May 15, 2020
(the "Park Employment Agreement"). Pursuant to the Park Employment Agreement, Ms. Park's annual base salary was initially
set at $265,000. Under the Park Employment Agreement, Ms. Park is eligible to earn an annual incentive cash bonus with a target of no
less than 40% of annual base salary. Actual bonus amounts will be based on Ms. Park's attainment of individual performance goals
at target levels set by the Board of Directors for the applicable calendar year. If such performance goals for the applicable year are
fully achieved, the Board of Directors may approve a bonus amount exceeding the target bonus level.

 Under
the Park Employment Agreement, Ms. Park has been granted options to purchase 8,530 shares of our common stock with an exercise price
of $25.96 per share, with one fourth of the options vesting following 12 full months of continuous service as an employee of AgeX, measured
from the date of grant, and the balance vesting in 36 equal monthly installments commencing on the first anniversary of the date of grant,
based upon the completion of each month of continuous service as an employee of AgeX. Such options expire on the earliest of (1) 10 years
from the date of grant, (2) three months after Ms. Park ceases to provide continuous service to us (other than due to death or disability)
or (3) one year after Ms. Park ceases to provide continuous service to us due to death or disability.

 Severance
and Change of Control Arrangements for Ms. Park

 Pursuant
to the Park Employment Agreement, each officer is entitled to severance benefits under certain circumstances.

 Pursuant
to the Park Employment Agreement, Ms. Park is entitled to severance benefits under certain circumstances.

 If
AgeX terminates Ms. Park's employment without "cause" or she resigns for "good reason" at any time (each
as defined in the Park Employment Agreement), she will be entitled to (1) 9 months base salary, (2) all accrued but unpaid salary earned
prior to or as of the date of termination or resignation, (3) full payment of Ms. Park's pro-rated target bonus due for such year
and (4) for a period of six months, all benefits under any health insurance plan of AgeX. In addition, if AgeX terminates Ms. Park's
employment without "cause" or she resigns for "good reason," (1) all of Ms. Park's outstanding equity awards
that would otherwise have vested during the 12 months following termination or resignation will become fully vested and exercisable immediately
and (2) with respect to any outstanding vested but unexercised options, the exercise period following termination or resignation will
be extended to the earlier of (A) 12 months after termination or (B) the natural expiration date of the applicable option. If AgeX terminates
Ms. Park's employment without "cause," or she resigns for "good reason," following a "change of control,"
(as defined in the Park Employment Agreement) (1) Ms. Park will be entitled to all of the benefits and payments that she would have been
entitled to if her employment had been otherwise terminated without "cause" or if she resigned for "good reason,"
as set forth above, and (2) all of Ms. Park's unvested options and restricted stock units, if any, will become fully vested and
exercisable immediately. The severance compensation may be paid in a lump sum or, at AgeX's election, in installments consistent
with the payment of Ms. Park's salary while employed by AgeX. In order to receive the severance benefits, Ms. Park must execute
a general release of all claims against AgeX.

 Nafees
N. Malik: Dr. Malik did not have an employment agreement with AgeX, but has been provided certain acceleration rights with respect
to his equity awards by the Compensation Committee of the AgeX Board. On June 4, 2021, the Compensation Committee of the AgeX Board approved
certain acceleration rights of the equity awards held by Dr. Malik. As a result of the termination of Dr. Malik's service with
AgeX without "cause," all outstanding stock options held by Dr. Malik automatically vested as to the number of unvested shares
that would otherwise have vested during the twelve months following termination; and with respect to his outstanding vested but unexercised
stock option grants, the post-termination exercise period was extended to the earlier of the date twelve (12) months after termination
or the expiration date of the stock option. Dr. Mailk's out of the money options were cancelled on March 12, 2024 to comply with
certain provisions of the Merger Agreement. Dr. Malik did not receive any severance benefits other than the foregoing option vesting
and expiration rights.

 Equity
Awards Outstanding at December 31, 2023

 The
following table summarizes certain information concerning outstanding stock options granted by AgeX under the AgeX 2017 Equity Incentive
Plan (the "Incentive Plan") and held by AgeX's Named Executive Officers as of December 31, 2023 and as adjusted to
give effect to the Reverse Stock Split.

 Option Awards

 Number of
 Securities Underlying
 Unexercised Options

 Option
 Exercise

 Option
 Expiration

 Name

 Grant Date

 Exercisable (1)

 Unexercisable

 Price

 Date

 Joanne M. Hackett (2)

 2/2/2022

 1,848
 (3)

 -

 $
 29.32

 2/1/2032

 Michael D. West (4)

 6/4/2021

 1,990
 (3)

 -

 $
 51.00

 10/9/2027

 3/11/2019

 2,843
 (3)

 -

 $
 150.53

 10/9/2027

 10/18/2018

 14,217
 (3)

 -

 $
 105.51

 10/9/2027

 10/10/2017

 18,766
 (3)

 -

 $
 70.34

 10/9/2027

 Andrea E. Park

 6/4/2021

 1,333
 (3)

 $
 51.00

 6/3/2031

 5/21/2020

 7,641

 $
 25.96

 5/20/2030

 10/1/2019

 (3)

 -

 $
 62.25

 9/30/2029

 Nafees N. Malik (5)

 6/4/2021

 1,865
 (3)

 -

 $
 51.00

 12/26/2024

 3/11/2019

 1,990
 (3)

 -

 $
 150.53

 12/26/2024

 10/18/2018

 9,952
 (3)

 -

 $
 105.51

 12/26/2024

 (1)

 Except
 as set forth below, vesting of all options is subject to continued service as an employee, director and/or consultant of AgeX or
 a subsidiary on the applicable vesting date. One fourth of the options vested or will vest on the first anniversary of the date of
 grant, and the remaining balance of the options vested or will vest in 36 equal monthly installments thereafter.

 (2)

 These
 options were awarded to Dr. Hackett during 2022 for service as a non-employee director before she was appointed Interim Chief Executive
 Officer. These options became exercisable in four equal calendar quarters and were fully vested as of December 31, 2022. On August
 9, 2023, Dr. Hackett was appointed as Interim Chief Executive Officer.

 (3)

 These
 out of the money options were cancelled on March 12, 2024 to comply with certain provisions of the Merger Agreement.

 (4)

 Dr.
 West served as Chief Executive Officer of AgeX and Reverse Bio through August 9, 2023 and October 31, 2023, respectively.

 (5)

 Dr.
 Malik served as AgeX's Chief Operating Officer through December 27, 2023. Dr. Malik served as a consultant, with his services
 provided by Juvenescence. Dr. Malik devoted a majority of his time to AgeX's operations and AgeX reimbursed Juvenescence for
 his services. The options will remain exercisable for a one year period through December 26, 2024.

 Risk
Considerations and Recoupment Policies

 The
Compensation Committee of our Board of Directors considers, in establishing and reviewing the executive compensation program, whether
the program encourages unnecessary or excessive risk taking. Most of our executive compensation arrangements include a fixed salary that
provides a steady income so that executives do not feel pressured to focus exclusively on stock price performance or short term financial
targets to the detriment of our long-term operational and strategic objectives. We supplement fixed salaries with discretionary bonus
awards based on the executive's performance as well as the performance of AgeX. The stock options and RSUs that we have granted
to our executive officers under the Incentive Plan vest over four years, assuring that the executives take a long-term perspective in
viewing their equity ownership. Although we have not adopted compensation plans, or made incentive awards, based on quantified financial
performance measures, we have adopted a Clawback Policy intended to comply with Section 811 of the NYSE American Company Guide. In the
event of certain restatements of AgeX financial statements, the Clawback Policy will require AgeX to recoup from its executive officers
compensation that is granted, earned or vested based wholly or in part upon the attainment of a financial reporting measure, to the extent
such compensation (a) was granted during the three fiscal years preceding a determination that AgeX financial statements must be restated,
and (b) exceeds the amount of compensation that would have been granted had the grant been based on the restated financial statement
amounts. A copy of the Clawback Policy has been filed as an exhibit to this Report and also is posted on our internet website and can
be found at www.agexinc.com.

 Incentive
Plan

 The
following summary of the Incentive Plan is a summary only and does not purport to include all of the terms of the Incentive Plan, and
is qualified by the full terms of the Incentive Plan. If the Merger is consummated, no further Awards will be granted under the Incentive
Plan. The Incentive Plan permits us to grant awards ("Awards") for up to an aggregate of 241,683 shares of our common stock.
Awards may include stock options, the grant or sale of restricted stock ("Restricted Stock"), stock appreciation rights ("SARs"),
and restricted stock units or RSUs which are hypothetical units issued with reference to our common stock,. Awards may be granted under
the Incentive Plan to employees, directors, and consultants of AgeX and our subsidiaries, including also subsidiaries that we may form
or acquire in the future. The Incentive Plan will be administered by our Board of Directors (the "Board") or by a committee
authorized by our Board ("Committee"), who will make all determinations with regard to the grant and terms of Awards, subject
to the terms of the Incentive Plan.

 Awards
may vest and thereby become exercisable or have restrictions on forfeiture lapse on the date of grant or in periodic installments or
upon the attainment of performance goals, or upon the occurrence of specified events as determined by the Board or the Committee. The
Board or Committee, in its discretion, may accelerate the vesting of an Award after the date of grant. To comply with certain provisions
of the Merger Agreement, on March 12, 2024 all outstanding out of the money options were cancelled.

 No
person shall be granted, during any one year period, options to purchase, or SARs with respect to, more than 28,433 shares in the aggregate,
or any Awards of Restricted Stock or RSUs with respect to more than 14,216 shares in the aggregate. If an Award is to be settled in cash,
the number of shares on which the Award is based shall not count toward the individual share limit.

 No
Awards may be granted under the Incentive Plan more than ten years after the date upon which the Incentive Plan was adopted by the Board,
and no options or SARS granted under the Incentive Plan may be exercised after the expiration of ten years from the date of grant.

 Stock
Options

 Options
granted under the Incentive Plan may be either "incentive stock options" within the meaning of Section 422(b) of the Internal
Revenue Code of 1986, as amended, or the Code, or "non-qualified" stock options that do not qualify incentive stock options.
Incentive stock options may be granted only to employees of AgeX and its subsidiaries. The exercise price of stock options granted under
the Incentive Plan must be equal to the fair market of our common stock on the date the option is granted. In the case of an optionee
who, at the time of grant, owns more than 10% of the combined voting power of all classes of our stock, the exercise price of any incentive
stock option must be at least 110% of the fair market value of our common stock on the grant date, and the term of the option may be
no longer than five years. The aggregate fair market value of common stock (determined as of the grant date of the option) with respect
to which incentive stock options become exercisable for the first time by an optionee in any calendar year may not exceed $100,000.

 The
exercise price of an option may be payable in cash or in shares of our common stock having a fair market value equal to the exercise
price, or in a combination of cash and common stock, or other legal consideration for the issuance of stock as the Board or Committee
may approve.

 Generally,
options will be exercisable only while the optionee remains an employee, director or consultant, or during a specific period thereafter
as approved by the Board or Committee, which will generally be three months, but in the case of the termination of an employee, director,
or consultant's services due to death or disability, the period for exercising a vested option shall be extended to the earlier
of 12 months after termination or the expiration date of the option.

 The
number of shares covered by the Incentive Plan, and the number of shares and the exercise price per share of each outstanding option,
shall be proportionately adjusted for any increase or decrease in the number of issued and outstanding shares of common stock resulting
from a subdivision or consolidation of shares or the payment of a stock dividend, or any other increase or decrease in the number of
issued and outstanding shares of common stock effected without receipt of consideration by us.

 Restricted
Stock and RSUs

 In
lieu of granting options, we may enter into purchase agreements with employees under which they may purchase or otherwise acquire Restricted
Stock or RSUs subject to such vesting, transfer, and repurchase terms and restrictions as the Board or Committee may determine. We may
permit employees or consultants who purchase Restricted Stock to pay for their shares by delivering a promissory note or an installment
payment agreement that may be secured by a pledge of their Restricted Stock. We may also issue Restricted Stock for services actually
performed by the recipient prior to the issuance of the Restricted Stock.

 The
Board or Committee may require that Restricted Stock shall be held by us or in escrow pending the expiration or release of the applicable
restrictions. Unvested Restricted Stock for which we have not received payment may be forfeited to us, or we may have the right to repurchase
unvested shares upon the occurrence of specified events, such as termination of employment.

 Subject
to the restrictions set by the Board or Committee, a recipient of Restricted Stock generally shall have the rights and privileges of
a stockholder, including the right to vote the Restricted Stock and the right to receive dividends; provided that, any cash dividends
and stock dividends with respect to the Restricted Stock shall be withheld by us for the recipient's account, and interest may
be credited on the amount of the cash dividends withheld at a rate and subject to such terms as determined by the Board or Committee.
The cash dividends or stock dividends so withheld and attributable to any particular share of Restricted Stock (and earnings thereon,
if applicable) shall be distributed to the recipient in cash or, at the discretion of the Board or Committee, in common stock having
a fair market value equal to the amount of such dividends, if applicable, upon the release of restrictions on the Restricted Stock and,
if the Restricted Stock is forfeited, the recipient shall have no right to the dividends.

 The
terms and conditions of a grant of RSUs shall be determined by the Board or Committee. No common stock shall be issued at the time a
RSU is granted, and we will not be required to set aside a fund for the payment of any such award. A recipient of RSUs shall have no
voting rights with respect to the RSUs. Upon the expiration of the restrictions applicable to a RSU, we will either issue to the recipient,
without charge, one share of common stock per RSU or cash in an amount equal to the fair market value of one share of common stock.

 At
the discretion of the Board or Committee, each RSU (representing one share of common stock) may be credited with cash and stock dividends
paid in respect of one share ("Dividend Equivalents"). Dividend Equivalents shall be withheld by us for the recipient's
account, and interest may be credited on the amount of cash Dividend Equivalents withheld at a rate and subject to such terms as determined
by the Board or Committee. Dividend Equivalents credited to a recipient's account and attributable to any particular RSU (and earnings
thereon, if applicable) shall be distributed in cash or, at the discretion of the Board or Committee, in common stock having a fair market
value equal to the amount of the Dividend Equivalents and earnings, if applicable, upon settlement of the RSU. If a RSU is forfeited,
the recipient shall have no right to the related Dividend Equivalents.

 SARs

 An
SAR is the right to receive, upon exercise, an amount payable in cash or shares or a combination of shares and cash, as determined by
the Board or Committee, equal to the number of shares subject to the SAR that is being exercised, multiplied by the excess of (a) the
fair market value of a share of common stock on the date the SAR is exercised, over (b) the exercise price specified in the SAR Award
agreement. SARs may be granted either as free standing SARs or in tandem with options, and with such terms and conditions as the Board
or Committee may determine. No SAR may be exercised later than 10 years after the date of grant.

 The
exercise price of an SAR will be determined by the Board or Committee, but shall not be less than 100% of the fair market value of one
share of common stock on the date of grant. An SAR granted in conjunction with an option shall have the same exercise price as the related
option, shall be transferable only upon the same terms and conditions as the related option, and shall be exercisable only to the same
extent as the related option; provided, however, that the SAR by its terms shall be exercisable only when the fair market value per share
exceeds the exercise price per share of the SAR or related option. Upon any exercise of an SAR granted in tandem with an option, the
number of shares for which the related option shall be exercisable shall be reduced by the number of shares for which the SAR has been
exercised. The number of shares for which an SAR issued in tandem with an option shall be exercisable shall be reduced by the number
of shares for which the related option has been exercised.

 Withholding

 To
the extent provided by the terms of an Award Agreement or as may be approved by the AgeX Board or Committee, an optionee or recipient
of a Restricted Stock or RSU Award or SAR may satisfy any federal, state or local tax withholding obligation relating to the Award by
any of the following means (in addition to our right to withhold from any compensation paid to the Award recipient) or by a combination
of such means: (a) tendering a cash payment; (b) authorizing us to withhold shares of common stock from the shares otherwise issuable
to the recipient as a result of the exercise or acquisition of shares under the Award, provided, however, that no shares are withheld
with a value exceeding the minimum amount of tax required to be withheld by law; or (c) delivering to us previously owned and unencumbered
shares of our common stock.

 Changes
in Shares Under the Incentive Plan

 In
the event of changes in the outstanding common stock or in our capital structure by reason of any stock or extraordinary cash dividend,
stock split, Reverse Stock Split, an extraordinary corporate transaction such as any recapitalization, reorganization, merger, consolidation,
combination, exchange, or other relevant change in capitalization, the terms of Awards granted under the Incentive Plan, and the maximum
number of shares subject to all Awards under the Incentive Plan or with respect to which any one person may be granted Awards during
any one year period, will be equitably adjusted or substituted, as to the number, price or kind of shares or other consideration subject
to the Awards to the extent necessary to preserve the economic intent of the Awards. In making such adjustments, the Board or Committee
shall generally ensure that the adjustments will not constitute a modification, extension or renewal of an incentive stock option within
the meaning of Section 424(h)(3) of the Code, and in the case of non-qualified options, ensure that any adjustments will not constitute
a modification of such non-qualified options within the meaning of Section 409A of the Code.

 Restrictions
on Transfers of Options

 Under
the Incentive Plan, stock options may be transferred to a limited class of defined "Permitted Transferees," such as the option
holder's immediate family members, family trusts and family controlled companies. In addition, options may be transferred to a
securities broker/dealer to exercise the options on the option holder's behalf as a means of the option holder obtaining the funds
needed to exercise the option, provided that the fair market value of the shares being acquired exceeded the exercise price of the option
at the close of the market on the trading day preceding the exercise date.

 Repricing
Prohibition

 The
Plan prohibits any modification of the purchase price or exercise price of an outstanding option or other Award if the change would effect
a "repricing" without stockholder approval. As defined in the Incentive Plan, "repricing" means a reduction in
the exercise price of an outstanding option or SAR or cancellation of an "underwater" or "out-of-the-money" Award
in exchange for other Awards or cash. An "underwater" or "out-of-the-money" Award is defined to mean an Award
for which the exercise price is less than the "fair market value" of our common stock. The fair market value will generally
be determined by the AgeX Board, but if our common stock becomes publicly traded, the fair market value will be the closing price of
the common stock on a national securities exchange or inter-dealer quotation system on which the common stock is traded.

 Limitation
on Share Recycling

 Shares
subject to an Award shall not again be made available for issuance or delivery under the Incentive Plan if those shares are (a) shares
tendered in payment of an option, (b) shares delivered or withheld by us to satisfy any tax withholding obligation, (c) shares covered
by a stock-settled SAR or other Award that were not issued upon the settlement of the Award, or (d) shares repurchased by us using the
proceeds from option exercises. Only shares subject to an Award that is cancelled or forfeited or expires prior to exercise or realization
may be regranted under the Incentive Plan.

 The
foregoing description of the Incentive Plan is qualified in its entirety by reference to the Incentive Plan, a copy of which is filed
as an Exhibit to our Registration Statement on Form 10 and is incorporated herein by reference.

 Other
Compensation Plans

 We
do not have any pension plans, defined benefit plans, or non-qualified deferred compensation plans. We may make contributions to 401(k)
plan accounts for participating executive officers and other employees.

 Non-Employee
Director Compensation

and members of committees of the Board of Directors who are our employees are entitled to receive compensation as employees but are not
compensated for serving as directors or attending meetings of the Board or committees of the Board. All directors are entitled to reimbursements
for their out-of-pocket expenses incurred in attending meetings of the Board or committees of the Board.

 For
the year ended December 31, 2023, non-employee Directors were entitled to receive the following annual cash fees for serving as a Member
or Chair of the Board of Directors or a designated committee.

of Board of Directors: $35,000

 Chair
of Board of Directors: $60,000

 Chair
of Audit Committee: $10,000

 Chair
of Compensation Committee: $5,000

 Chair
of Nominating & Corporate Governance Committee: $5,000

 The
following table summarizes certain information concerning the compensation paid during the past fiscal year to each of the persons who
served as directors during the year ended December 31, 2023 and who were not our employees on the date the compensation was earned. The
compensation Dr. Hackett received for her service as a non-employee director prior to becoming our Interim Chief Executive Officer is
included in the Summary Compensation Table above.

 Name

 Fees Earned
 or Paid in Cash

 Option Awards (1)

 Total

 Gregory H. Bailey

 $
 40,000

 $
 -

 $
 40,000

 Michael H. May (2)

 $
 42,873

 $
 -

 $
 42,873

 Jean-Christophe Renondin (3)

 $
 15,890

 $
 16,451

 $
 32,341

 (1)

 In
 accordance with SEC rules, the amounts shown reflect the aggregate grant date fair value of stock awards granted to Non-Employee
 Directors during 2023, computed in accordance with Financial Accounting Standards Board Accounting Standards Codification Topic 718
 (FASB ASC 718). The grant date fair value for the stock options is measured based on the closing price of AgeX's common stock
 on the date of grant. See Note 8, Stock-Based Awards to AgeX's consolidated financial statements included elsewhere
 in this Report for details as to the assumptions used to determine the fair value of the awards. As of December 31, 2023, Dr. Bailey
 held 4,691 stock options, Dr. May held 3,597 stock options, and Dr. Renondin held 734 stock options, all of which were fully vested
 as of December 31, 2023. Options that were out of the money on March 12, 2024 (other than the options held by Dr. May which expired
 on March 12, 2024) were cancelled on that date to comply with certain provisions of the Merger Agreement.

 (2)

 Dr.
 May's term as a director expired on December 13, 2023. On that date, 3,597 stock options were vested but expired on March 12,
 2024, 90 days from the date his term as a director ended.

 (3)

 Dr.
 Renondin was appointed as a director to fill a vacancy on the Board of Directors on August 9, 2023. Dr. Renondin was appointed to
 serve on the Audit Committee, Compensation Committee, and as Chair of the Nominating and Corporate Governance Committee of the Board
 of Directors. On August 9, 2023, Dr. Renondin was awarded 734 stock options which had a fair value of $16,451 on the grant date.
 These options were fully vested as of December 31, 2023 but were cancelled on March 12, 2024 to comply with certain provisions of
 the Merger Agreement.

 Item
12. Security Ownership of Certain Beneficial Owners and Management, and Related Stockholder Matters

 Security
Ownership of Certain Beneficial Owners and Management

 The
following table sets forth information regarding the beneficial ownership of our common stock as of March 14, 2024, by (i) each of our
named executive officers, (ii) each of our directors, (iii) all of our directors and executive officers as a group; and (iv) each person,
or group of affiliated persons, who is known by us to beneficially own more than 5% of our common stock. Our calculation of the percentage
of beneficial ownership is based on 2,500,664 shares of common stock outstanding as of March 14, 2024. Amounts shown do not
take into account shares of common stock issuable upon the exercise of the Post-Merger Warrants that were distributed to AgeX stockholders
on March 19, 2024, which are not exercisable unless the Merger is consummated

 Beneficial
ownership is determined according to the rules of the SEC and generally means that a person has beneficial ownership of a security if
he, she or it possesses sole or shared voting or investment power of that security, including options that are currently exercisable
or exercisable within 60 days of March 14, 2024, and restricted stock units that will vest within 60 days of March 14, 2024. Shares of
our common stock issuable pursuant to stock options and restricted stock units currently exercisable or exercisable within 60 days of
March 14, 2024, and restricted stock units that will vest within 60 days of March 14, 2024, are deemed outstanding for computing the
percentage of the person holding such equity awards and the percentage of any group of which the person is a member but are not deemed
outstanding for computing the percentage of any other person. Except as indicated by the footnotes below, we believe, based on the information
furnished to us, that the persons named in the table below have sole voting and investment power with respect to all shares they beneficially
own, subject to community property laws where applicable. The information does not necessarily indicate beneficial ownership for any
other purpose, including for purposes of Section 16 of the Exchange Act.

 Name of Beneficial Owner

 Beneficially Owned (2)

 Percentage of Shares
 Beneficially Owned

 5% Stockholders

 Juvenescence Limited and certain affiliates (1)

 2,627,231

 81.1
 %

 Named Executive Officers and Directors

 Joanne M. Hackett

 -

 *

 Michael D. West (3)

 1,193

 *

 Andrea E. Park (4)

 8,361

 *

 Nafees N. Malik (5)

 -

 *

 Gregory H. Bailey

 -

 *

 Jean-Christophe Renondin (6)

 *

 Steven Mintz (7)

 3,733

 *

 All executive
 officers and directors as a group (8 persons) (8)

 14,024

 *
 %

 *

 Less
 than 1%

 (1)

 Includes
 1,889,323 shares of AgeX common stock held by JuvVentures (UK) Limited (JuvVentures), a wholly-owned subsidiary of Juvenescence Limited,
 303,259 shares of AgeX common stock that may be acquired upon the exercise of common stock purchase warrants, 434,649 shares of AgeX
 common stock that may be acquired through the conversion of $6,000,000 of certain outstanding loans into shares of AgeX common stock
 at an assumed conversion price of $13.80 per share based on the closing price of AgeX common stock on the NYSE American on March
 4, 2024 as adjusted to reflect the Reverse Stock Split. Dr. Gregory Bailey is the executive chairman of Juvenescence Limited and
 may be deemed to have shared power to vote or direct the vote of, and/or shared power to dispose or to direct the disposition of,
 the shares held by JuvVentures. This response is not and shall not be construed as an admission that Dr. Bailey is the beneficial
 owner of any securities of AgeX other than the securities actually owned by Dr. Bailey (if any). The address of Juvenescence is 1 st
 Floor, Viking House, St Paul's Square, Ramsey, Isle of Man, British Isles, IM8 1GB. The foregoing information is based
 solely on a Schedule 13D/A filed with the SEC on March 7, 2024, which provides information only as of March 5, 2024 and consequently,
 Juvenescence's beneficial ownership may have changed since that date.

 (2)

 Pursuant
 to the Merger Agreement, all out of the money options (meaning those options with an exercise price equal to or greater than $0.7751
 on a pre-Reverse Stock Split basis) were canceled.

 (3)

 Dr.
 West served as Chief Executive Officer of AgeX and of Reverse Bio through August 9, 2023 and October 31, 2023, respectively.

 (4)

 Includes
 8,352 shares of AgeX common stock that may be acquired upon the exercise of certain stock options that are presently exercisable
 or that will become exercisable within 60 days. Excludes 177 shares of AgeX common stock that may be acquired upon the exercise of
 certain stock options that are not presently exercisable and that will not become exercisable within 60 days.

 (5)

 Dr.
 Malik served as Chief Operating Officer of AgeX through December 27, 2023.

 (6)

 Entirely shares of AgeX common stock that may be acquired
 upon the exercise of certain stock options that are presently exercisable.

 (7)

 Includes
 3,307 shares of AgeX common stock held in joint accounts with adult children, 426 shares of AgeX common stock that may be acquired
 upon the exercise of certain stock options that will become exercisable within 60 days. Excludes 1,386 shares of AgeX common stock
 that may be acquired upon the exercise of certain stock options that are not presently exercisable and that will not become exercisable
 within 60 days. Mr. Mintz was appointed as a director to the AgeX Board on January 8, 2024.

 (8)

 Includes
 9,512 shares of AgeX common stock that may be acquired upon the exercise of certain stock options that are presently exercisable
 or that will become exercisable within 60 days and 3 shares of AgeX common stock held by one officer who is not a Named Executive
 Officer. Excludes 1,563 shares of AgeX common stock that may be acquired upon the exercise of certain stock options that are
 not presently exercisable and that will not become exercisable within 60 days.

 Item 13. Certain Relationships and Related Transactions, and Director Independence

 Related
Person Transactions Policy and Procedures

 The
AgeX Board has adopted a written Related Person Transaction Policy, which applies to transactions exceeding $120,000 in which any of
AgeX's officers, directors, beneficial owners of more than 5% of the outstanding shares of AgeX common stock, or any member of
their immediate family, has a direct or indirect material interest, determined in accordance with the policy. Those transactions are
referred to as Related Person Transactions. A Related Person Transaction will be subject to review and approval by the Audit Committee
of the AgeX Board prior to effectiveness or consummation, to the extent practical. The Audit Committee will review the relevant information
available to it about the Related Person Transaction. The Audit Committee may approve or ratify the Related Person Transaction only if
the Audit Committee determines that, under the circumstances, the transaction is in, or is not in conflict with, AgeX's best interests.

Related Person Transactions

of AgeX's Interim Chief Executive Officer

 On
August 9, 2023, AgeX entered into a Consulting Agreement with Dr. Hackett pursuant to which she will receive a fee in the amount of $160,000
per year for services rendered as Interim Chief Executive Officer of AgeX. Dr. Hackett will not be eligible to participate in any AgeX
retirement, pension, life, health, accident and disability insurance, or other similar employee benefit plans for AgeX executive officers
or employees other than the Incentive Plan.

of AgeX's Chief Operating Officer

 From
October 2018 through December 31, 2023, AgeX's Chief Operating Officer, Dr. Malik, who was an employee of Juvenescence, devoted
a majority of his time to AgeX's operations for which AgeX reimbursed Juvenescence for his services on an agreed upon fixed annual
rate of approximately $272,000 from October 18, 2018 through March 10, 2019 and approximately $283,000 from March 11, 2019 through December
31, 2023. Additionally, Dr. Malik received a $50,000 bonus in March 2019. As of December 31, 2023 AgeX had accrued approximately $66,000
payable to Juvenescence for Dr. Malik's services rendered.

 2019
Loan Agreement and Warrant Agreement

 On
August 13, 2019, AgeX and Juvenescence entered into a Loan Facility Agreement (the "2019 Loan Agreement") pursuant to which
Juvenescence has provided to AgeX a $2.0 million line of credit for a period of 18 months. On February 10, 2021, AgeX entered into an
amendment (the First Amendment) to the 2019 Loan Agreement. The First Amendment extended the maturity date of loans under the 2019 Loan
Agreement to February 14, 2022 and increased the amount of the loan facility by $4.0 million. On November 8, 2021, AgeX entered into
Amendment No. 2 (the Second Amendment) to the 2019 Loan Agreement. The Second Amendment increased the amount of the loan facility by
another $1.0 million. As of December 31, 2021, AgeX had borrowed all of the $7.0 million total line of credit under the 2019 Loan Agreement.
Concurrent with the first draw down of funds under the 2019 Loan Agreement, AgeX issued to Juvenescence 540 shares of AgeX common stock,
with an approximate value of $56,000. On February 14, 2022, AgeX refinanced the $7.0 million outstanding principal amount of the loans
and a $160,000 origination fee due under the 2019 Loan Agreement. See the discussion below regarding the 2022 Secured Note and repayment
of the amounts borrowed under the 2019 Loan Agreement.

 As
consideration for the line of credit under the 2019 Loan Agreement, AgeX issued to Juvenescence warrants to purchase 4,265 shares of
AgeX common stock, with an exercise price of $91.44 per share, which was the volume weighted average price on the NYSE American (VWAP)
of AgeX common stock over the twenty trading days prior to the date the warrants were issued. The warrants expired on August 12, 2022.

 2020
Loan Agreement and New Warrant Agreement

 On
March 30, 2020, AgeX and Juvenescence entered into a new Secured Convertible Facility Agreement (the "2020 Loan Agreement"),
which was amended on March 13, 2023 to extend the maturity date by one year, pursuant to which AgeX borrowed $8.0 million from Juvenescence.
During July 2023, the full $8 million of 2020 Loan Agreement indebtedness was extinguished in exchange for shares of AgeX Series A preferred
stock pursuant to the 2023 Exchange Agreement between AgeX and Juvenescence described below.

 Common
Stock and 2020 Warrants – Under the terms of the 2020 Loan Agreement, AgeX issued to Juvenescence 810 shares of AgeX common
stock as an arrangement fee for the loan facility when AgeX borrowed an aggregate of $3.0 million, and AgeX issued to Juvenescence warrants
to purchase a total of 104,365 shares of AgeX common stock (the "2020 Warrants"). The number of 2020 Warrants issued was
determined as follows: each time AgeX received an advance of funds under the 2020 Loan Agreement, AgeX issued to Juvenescence a number
of 2020 Warrants equal to 50% of the number determined by dividing the amount of the advance by the applicable market price of AgeX common
stock. The market price for each 2020 Warrant when issued was the closing price per share of AgeX common stock on the NYSE American on
the date of the applicable notice from AgeX requesting a draw of funds that triggered the obligation to issue the 2020 Warrant. The exercise
price of the 2020 Warrants is the applicable market price of AgeX common stock. Each of the 2020 Warrants will expire at 5:00 p.m. New
York time three years after the date of its issuance. AgeX had issued to Juvenescence 2020 Warrants to purchase a total of 104,365 shares
of AgeX common stock of which 25,628 were outstanding as of December 31, 2023. The exercise prices of the 2020 Warrants that were still
outstanding as of December 31, 2023 range from $28.49 per share to $66.65 per share representing the market closing price on the NYSE
American of AgeX common stock on the one day prior to delivery of the drawdown notices. The number of shares issuable upon exercise of
the 2020 Warrants and the exercise price per share are subject to adjustment upon the occurrence of certain events such as a stock split
or reverse split or combination of the common stock, stock dividend, recapitalization or reclassification of the common stock, and similar
events.

 2022
Secured Convertible Promissory Note and Security Agreement

 On
February 14, 2022, AgeX and Juvenescence entered into a Secured Convertible Promissory Note (Original 2022 Secured Note) pursuant to
which Juvenescence agreed to provide to AgeX a $13,160,000 line of credit for a period of 12 months. AgeX drew an initial $8,160,000
of the line of credit and used $7,160,000 to refinance the outstanding principal and the loan origination fees under the 2019 Loan Agreement
with Juvenescence. On February 9, 2023, AgeX and Juvenescence entered into an Amended and Restated Secured Convertible Promissory Note
("2022 Secured Note") which amended and restated the Original 2022 Secured Note and added $2 million to the line of credit
available to be borrowed by AgeX under the Original 2022 Secured Note subject to Juvenescence's discretion to approve each loan
draw. On May 9, 2023, AgeX and Juvenescence entered into an Allonge and Second Amendment to Amended and Restated Convertible Promissory
Note (the "2022 Secured Note Second Amendment") that increased the amount of the line of credit available to AgeX by $4,000,000,
subject to the terms of the 2022 Secured Note and Juvenescence's discretion to approve and fund each of AgeX's future draws
of that additional amount of credit. On June 2, 2023, AgeX and Juvenescence entered into a Third Amendment to Amended and Restated Convertible
Promissory Note, to provide that (i) AgeX may draw on the available portion of the line of credit under the 2022 Secured Note until the
earlier of the date a Qualified Offering (as defined in the 2022 Secured Note) is consummated by AgeX or October 31, 2023 (subject to
Juvenescence's discretion to approve each loan draw as provided in the 2022 Secured Note), (ii) AgeX will not be obligated to issue
additional common stock purchase warrants to Juvenescence in connection with the receipt of loan funds made available pursuant to the
2022 Secured Note Second Amendment, and (iii) the definition of the Reverse Financing Condition as defined in the 2022 Secured Note was
amended to extend to June 20, 2023, the referenced deadline for fulfillment of the condition to permit borrowing or other incurrence
of indebtedness by Reverse Bio. On July 31, 2023, AgeX and Juvenescence entered into a Fourth Amendment to the 2022 Secured Note to provide
that (i) the definition of Reverse Financing Condition was amended to extend to October 31, 2023 the referenced deadline for fulfillment
of the condition to permit borrowing or other incurrence of indebtedness by AgeX's subsidiary Reverse Bio, and (ii) Juvenescence
may convert the outstanding amount of the 2022 Secured Note loans or any portion of such loans into AgeX common stock without restriction
by the "19.9% Cap" if Juvenescence elects to convert those amounts at a conversion price or prices equal to the "Drawdown
Market Prices" applicable to such loan amounts in lieu of a lower conversion price set with reference to the current market price
of AgeX common stock at the time of conversion. The 19.9% Cap is a provision of the 2022 Secured Note that limits the amount of common
stock that Juvenescence may acquire through the conversion of 2022 Secured Note loans in order to comply with NYSE American requirements
pertaining to the amount of shares that a listed company, such as AgeX, may sell at a price less than the market prices prevailing at
the time the loans were made (the "Drawdown Market Prices") without shareholder approval. On November 9, 2023, AgeX and Juvenescence
entered into an Allonge and Fifth Amendment to the 2022 Secured Note that increases the amount of the line of credit available to AgeX
by $4,400,000, subject to the terms of the 2022 Secured Note and Juvenescence's discretion to approve and fund each of AgeX's
future draws of that additional amount of credit. On February 9, 2024, AgeX and Juvenescence entered into a 2022 Secured Note Sixth Amendment
that extends the repayment date of the 2022 Secured Note to May 9, 2024. As of March 20, 2024, the outstanding principal amount of the 2022 Secured Note was $6,900,000.

 As
an arrangement fee for the 2022 Secured Note, AgeX will pay Juvenescence an origination fee in an amount equal to 4% of the amount each
draw of loan funds, which will accrue as each draw is funded, and an additional 4% of all the total amount of funds drawn that will accrue
following the end of the 12 month period during which funds may be drawn from the line of credit. The origination fee will become due
and payable on the maturity date of the 2022 Secured Note or in a pro rata amount with any prepayment of in whole or in part of the outstanding
principal balance of the 2022 Secured Note.

July 2023, $17,992,800 of indebtedness and accrued loan origination fees under the 2022 Secured Note was extinguished in exchange for
shares of AgeX Series A Preferred Stock and Series B Preferred Stock pursuant to the Exchange Agreement described below.

 Conversion
of Loan Amounts into Common Stock – In lieu of repayment of funds borrowed, AgeX may convert the loan balance and any accrued
but unpaid origination fees into AgeX common stock or "units" if AgeX raises at least $10,000,000 through sale of AgeX common
stock (or AgeX common stock paired with warrants or other convertible securities in "units"). The conversion price per share
or units shall be the lowest price at which such shares or units are sold. Juvenescence may convert the principal balance and accrued
origination fee in whole or in part into AgeX common stock at any time at Juvenescence's election at the closing price per share
of AgeX common stock on the NYSE American or other national securities exchange on the date prior to the date Juvenescence gives AgeX
notice of Juvenescence's election to convert the 2022 Secured Note, in whole or in part, into AgeX common stock.

 2022
Warrants – Upon each draw down of funds under the 2022 Secured Note prior to June 2, 2023, AgeX issued to Juvenescence warrants
to purchase shares of AgeX common stock (the "2022 Warrants"). The 2022 Warrants are governed by the terms of a Warrant Agreement,
as amended by a Reaffirmation and Amendment Agreement, between AgeX and Juvenescence. The number of 2022 Warrants issued is equal to
50% of the number determined by dividing the amount of the applicable loan draw by the applicable market price. The market price was
the last closing price per share of AgeX common stock on the NYSE American preceding the delivery of the notice from AgeX requesting
a draw of funds that triggered the obligation to issue 2022 Warrants. The exercise price of the 2022 Warrants is the applicable market
price. Each of the 2022 Warrants will expire at 5:00 p.m. New York time three years after the date of its issuance.

 As
of December 31, 2023, AgeX had issued to Juvenescence 2022 Warrants to purchase a total of 294,482 shares of AgeX common stock. The exercise
prices of the 2022 Warrants range from $20.75 per share to $30.94 per share representing the market closing price of AgeX common stock
on the NYSE American on the one day prior to delivery of the applicable drawdown notices. The number of shares issuable upon exercise
of the 2022 Warrants and the exercise price per share are subject to adjustment upon the occurrence of certain events such as a stock
split or reverse split or combination of the common stock, stock dividend, recapitalization or reclassification of the common stock,
and similar events.

 Default
Provisions –The loan balance and origination fees may become immediately due and payable prior to the mandatory repayment
date if an Event of Default as defined in the 2022 Secured Note occurs. Events of Default under the 2022 Secured Note include the
following: (a) AgeX fails to pay any principal amount payable by it in the manner and at the time provided under and in accordance
with the 2022 Secured Note; (b) AgeX fails to pay any other amount payable by it in the manner and at the time provided under and in
accordance with the 2022 Secured Note or the Security Agreement described below or any other agreement executed in connection with
the 2022 Secured Note (the" Loan Documents") and the failure is not remedied within three business days; (c) AgeX fails
to perform any of its covenants or obligations or fails to satisfy any of the conditions under the 2022 Secured Note or any other
Loan Document and, and such failure (if capable of remedy) remains unremedied to the satisfaction of Juvenescence (in its sole
discretion) for 10 business days after the earlier of (i) notice requiring its remedy has been given by Juvenescence to AgeX and
(ii) actual knowledge of the failure by senior officers of AgeX; (d) if any indebtedness of AgeX in excess of $100,000 becomes due
and payable, or a breach or other circumstance arises thereunder such that Juvenescence is entitled to declare such indebtedness due
and payable, prior to its due date, or any indebtedness of AgeX in excess of $25,000 is not paid on its due date; (e) AgeX stops
payment of its debts generally or ceases or threatens to cease to carry on its business or is unable to pay its debts as they fall
due or is deemed by a court of competent jurisdiction to be unable to pay its debts as they fall due, or enters into any
arrangements with its creditors generally; (f) if (i) an involuntary proceeding (other than a proceeding instituted by Juvenescence
or an affiliate of Juvenescence) shall be commenced or an involuntary petition shall be filed seeking liquidation, reorganization or
other relief in respect of AgeX and any subsidiary, or of all or a substantial part of its assets, under any federal, state or
foreign bankruptcy, insolvency, receivership or similar law now or hereafter in effect or (ii) an involuntary appointment of a
receiver, trustee, custodian, sequestrator, conservator or similar official for AgeX or a subsidiary or for a substantial part of
its assets occurs (other than in a proceeding instituted by Juvenescence or an affiliate of Juvenescence), and, in any such case,
such proceeding shall continue undismissed and unstayed for sixty (60) consecutive days without having been dismissed, bonded or
discharged or an order of relief is entered in any such proceeding; (g) it becomes unlawful for AgeX to perform all or any of its
obligations under the 2022 Secured Note or any authorization, approval, consent, license, exemption, filing, registration or other
requirement of any governmental, judicial or public body or authority necessary to enable AgeX to comply with its obligations under
the 2022 Secured Note or to carry on its business is not obtained or, having been obtained, is modified in a manner that precludes
AgeX or its subsidiaries from conducting their business in any material respect, or is revoked, suspended, withdrawn or withheld or
fails to remain in full force and effect; (h) the issuance or levy of any judgment, writ, warrant of attachment or execution or
similar process against all or any material part of the property or assets of AgeX or a subsidiary if such process is not released,
vacated or fully bonded within 60 calendar days after its issue or levy; (i) any injunction, order, judgment or decision of any
court is entered or issued which, in the opinion of Juvenescence, materially and adversely affects, or is reasonably likely so to
affect, the ability of AgeX or a subsidiary to carry on its business or to pay amounts owed to Juvenescence under the 2022 Secured
Note; (j) AgeX, whether in a single transaction or a series of related transactions, sells, leases, licenses, consigns, transfers or
otherwise disposes of any material portion of its assets (with any such disposition with respect to any asset or assets with a fair
value of at least $250,000 being deemed material), other than (i) certain permitted investments (ii) sales, transfers and
dispositions of inventory in the ordinary course of business, (iii) any termination of a lease of real or personal property that is
not necessary in the ordinary course of AgeX's business, could not reasonably be expected to have a material adverse effect
and does not result from AgeX's default, and (iv) any sale, lease, license, consignment, transfer or other disposition of
assets that are no longer necessary in the ordinary course of business or which has been approved in writing by Juvenescence; (k)
any of the following shall occur: (i) the security and/or liens created by the Security Agreement or any other Loan Document shall
at any time cease to constitute valid and perfected security and/or liens on any material portion of the collateral intended to be
covered thereby; (ii) except for expiration in accordance with its terms, the Security Agreement or any other Loan Document pursuant
to which a lien is granted by AgeX in favor of Juvenescence shall for whatever reason be terminated or shall cease to be in full
force and effect; (iii) the enforceability of the Security Agreement or any other Loan Document pursuant to which a lien is granted
by AgeX in favor of Juvenescence shall be contested by AgeX or a subsidiary; (iv) AgeX shall assert that its obligations under the
2022 Secured Note or any other Loan Document shall be invalid or unenforceable; or (v) a loss, theft, damage or destruction occurs
with respect to a material portion of the collateral; (l) there is any change in the financial condition of AgeX and its
subsidiaries which, in the opinion of Juvenescence, materially and adversely affects, or is reasonably likely so to affect, the
ability of AgeX to perform any of its obligations under the 2022 Secured Note; and (m) any representation, warranty or statement
made, repeated or deemed made or repeated by AgeX in the 2022 Secured Note, or pursuant to the Loan Documents, is incomplete,
untrue, incorrect or misleading in any material respect when made, repeated or deemed made.

 Security
Agreement – AgeX has entered into a Security Agreement granting Juvenescence a security interest in substantially all of the
assets of AgeX, including a security interest in shares of AgeX subsidiaries that hold certain assets, as collateral for AgeX's
loan obligations. If an Event of Default occurs under the 2022 Secured Note, Juvenescence will have the right to foreclose on the assets
pledged as collateral. Concurrently with the execution of the 2022 Secured Note Fifth Amendment, AgeX also entered into an additional
Pledge Agreement to add shares of a subsidiary to the collateral under the Security Agreement, and AgeX's subsidiaries ReCyte,
Reverse Bio, and UniverXome each entered into a Guaranty Agreement and Joinder Agreement pursuant to which each of them agreed to guaranty
AgeX's obligations to Juvenescence pursuant to the 2022 Secured Note, as amended by the 2022 Secured Note Fifth Amendment, and
to grant Juvenescence a security interest in their respective assets pursuant to the Security Agreement to secure their obligations to
Juvenescence.

 The
2023 Secured Convertible Promissory Note and Security Agreement

 On
March 13, 2023, AgeX and Juvenescence entered into a Secured Convertible Promissory Note (the "2023 Secured Note") pursuant
to which Juvenescence loaned to AgeX $10,000,000. AgeX used the loan proceeds to finance a $10,000,000 loan to Serina which is evidenced
by a promissory note payable by Serina to AgeX. In lieu of accrued interest, AgeX agreed to pay Juvenescence an origination fee in an
amount equal to 7% of the loan funds disbursed to AgeX, which will accrue in two installments. During July 2023, the $10,000,000 principal
balance of the 2023 Secured Note indebtedness and a portion of the loan origination fee was extinguished in exchange for shares of AgeX
Series B preferred stock pursuant to the Exchange Agreement described below.

 Conversion
of Loan Amounts into Common Stock – AgeX may convert the any accrued but unpaid origination fee into AgeX common stock or "units"
if AgeX consummates a sale of common stock (or common stock paired with warrants or other convertible securities in "units")
in which the gross sale proceeds are at least $10,000,000. If less than $25,000,000 is raised through the sale of AgeX common stock or
units, the conversion price per share or units shall be the lowest price at which shares or units are sold. If at least $25,000,000 is
raised, the conversion price per share shall be 85% of the "Market Price" of AgeX common stock determined as provided in
the 2023 Secured Note. Juvenescence may convert accrued origination fees into AgeX common stock at the market price per share of AgeX

 Amended
Security Agreement – AgeX has entered into an Amended and Restated Security Agreement that amended the February 14, 2022 Security
Agreement between AgeX and Juvenescence and added the 2023 Secured Note to the obligations secured by the Security Agreement.

 Debt
Exchanged for Preferred Stock and Remediation of Stock Exchange Listing Deficiency

 In
order to eliminate a stockholders equity deficiency and to regain compliance with the continued listing requirements of the NYSE American,
on July 24, 2023, AgeX issued to Juvenescence 211,600 shares of a newly authorized Series A Preferred Stock and 148,400 shares of a newly
authorized Series B Preferred Stock in exchange for the cancellation of a total of $36 million of indebtedness consisting of the outstanding
principal amount of loans then outstanding under the 2020 Loan Agreement, the 2022 Secured Note, and the 2023 Secured Note, plus the
loan origination fees accrued with respect to the 2022 Secured Note and a portion of the loan origination fees accrued pursuant to the
2023 Secured Note. The cancellation of indebtedness in exchange for the Series A Preferred Stock and Series B Preferred Stock (collectively,
the "Preferred Stock") was conducted pursuant to an Exchange Agreement between AgeX and Juvenescence. The terms of the Preferred
Stock are summarized in Note 7, Stockholders' Equity/(Deficit) in Notes to Consolidated Financial Statements found elsewhere
in this Report.

 On
February 1, 2024, all of the shares of Series A Preferred Stock and Series B Preferred Stock, which were then held by Juvenescence's
subsidiary JuvVentures (UK) Limited ("JuvVentures"), automatically converted into shares of AgeX common stock in accordance
with the terms of the Preferred Stock (the "Conversion"). AgeX issued a total of 1,421,666 shares of common stock to JuvVentures
in the Conversion.

 Based
on information reported by Juvenescence in an amendment to its Schedule 13D filed with the SEC on February 5, 2024, as a result of the
Conversion, Juvenescence, through JuvVentures, holds of record 1,889,323 issued and outstanding shares of common stock, representing
75.6% of the shares of common stock issued and outstanding as of the close of business on March 14, 2024, without taking into account
additional shares of common stock that Juvenescence may acquire through the conversion of certain outstanding indebtedness and the exercise
of certain outstanding common stock purchase warrants that Juvenescence holds or Post-Merger Warrants that were distributed to Juvenescence
on March 19, 2024. Prior to the Conversion, Juvenescence was already deemed to have beneficially owned the shares of common stock
issuable in connection with the Conversion, and Juvenescence reported beneficially owning those shares of common stock in its Schedule
13D prior to the Conversion such that the Conversion did not result in a change in Juvenescence's beneficial ownership of common
stock. However, because the number of issued and outstanding shares of common stock held of record by JuvVentures and beneficially owned
by Juvenescence following the Conversion exceeds 50% of all issued and outstanding shares of common stock, Juvenescence now has voting
power over a majority of the outstanding shares of the common stock, and a change of control of AgeX may be deemed to have occurred as
a result of the Conversion.

 As
a controlling stockholder holding more than 50% of the outstanding shares of common stock through its subsidiary JuvVentures, Juvenescence
has the power to elect all members of the AgeX' Board and to approve or reject all matters submitted for stockholder approval by
the AgeX Board, by Juvenescence as a stockholder, or by other stockholders, including, but not limited to: equity compensation plans
for employees, officers, and directors; mergers, acquisitions, and consolidations; sales of AgeX assets; and amendments of AgeX's
certificate of incorporation and bylaws, including all of the Stockholder Matters. If the Merger is consummated in accordance with the
terms of the Merger Agreement, immediately following the Merger, equity holders of Serina immediately prior to the closing of the Merger
are expected to own approximately 75% of the outstanding shares of common stock of AgeX, and equity holders of AgeX immediately prior
to the closing of the Merger are expected to own approximately 25% of the outstanding shares of common stock of AgeX, in each case, on
a pro forma fully diluted basis, subject to certain assumptions and exclusions, including the actual closing price of common stock being
equal to or greater than $12.00 per share excluding the impact of the distribution of Post-Merger Warrants to AgeX stockholders. Accordingly,
it is expected that the shares of common stock now beneficially owned by Juvenescence would represent substantially less than 50% of
the outstanding shares of common stock immediately after the Merger as a result of the issuance of shares of common stock to securities
holders of Serina pursuant to the Merger Agreement.

 Presently,
one member of the AgeX Board, Gregory H. Bailey, is a director of Juvenescence, while a majority of our directors are "independent"
directors as defined in the NYSE American Company Guide (the Company Guide), and the Audit Committee, Compensation Committee, and the
Nominating & Corporate Governance Committee of our Board are comprised entirely of independent directors. While Juvenescence controls
more than 50% of the outstanding common stock, AgeX will qualify as a "controlled company" as defined by the Company Guide.
Being a "controlled company" will allow AgeX to exempt itself from the requirements that a majority of its directors be "independent"
directors as defined in the Company Guide and that the Compensation Committee and the Nominating & Corporate Governance Committee
be comprised entirely of independent directors. The exemption does not apply to the Audit Committee which must be comprised of independent
directors. If AgeX were to take advantage of any or all of these exemptions available to controlled companies under the Company Guide,
it would be required to disclose doing so in its annual meeting proxy statement or in its Annual Report on Form 10-K.

 Registration
Rights Agreements

 AgeX
entered into a Registration Rights Agreement and certain amendments to the original agreement, pursuant to which it has agreed to register
for sale under the Securities Act all shares of AgeX common stock presently held by Juvenescence or that may be acquired by Juvenescence
through the exercise of common stock purchase warrants that they hold or that they may acquire pursuant to the 2020 Loan Agreement and
the 2022 Secured Note, and shares that they may acquire through the conversion of loans under the 2020 Loan Agreement and the 2022 Secured
Note, including principal and accrued interest, and the amount of the loan origination fee under the 2022 Secured Note. AgeX has filed
a registration statement on Form S-3, which has become effective under the Securities Act, for offerings on a delayed or continuous basis
covering 467,657 shares of AgeX common stock held by Juvenescence and 92,358 shares of AgeX common stock that may be issued upon the
exercise of a portion of the warrants held by Juvenescence. Juvenescence retains the right to require AgeX to register additional shares
of AgeX common stock that Juvenescence may acquire through the exercise of warrants or the conversion of 2020 Loan Agreement loans, 2022
Secured Note loans, and the origination fee under the 2022 Secured Note. AgeX is obligated to pay the fees and expenses of each registered
offering under such registration rights agreement except for underwriting discounts and commissions. AgeX and Juvenescence will indemnify
each other from certain liabilities in connection the registration, offer, and sale of securities under a registration statement, including
liabilities arising under the Securities Act.

July 2023, AgeX and Juvenescence entered into a Registration Rights Agreement pursuant to which AgeX has agreed to use commercially reasonable
efforts to register the for sale under the Securities Act the shares of common stock issuable upon conversion of Preferred Stock. A registration
statement must be filed upon request of Juvenescence if Form S-3 is available to AgeX. Juvenescence will also have "piggyback"
registration rights if AgeX files a registration statement for the sale of shares for itself or other stockholders, subject to certain
customary exceptions based on the nature of the registration statement. AgeX will bear the expenses of the registration statement but
not underwriting or broker's commissions related to the sale of the common stock. AgeX and Juvenescence will indemnify each other
from certain liabilities in connection the registration, offer, and sale of securities under a registration statement, including liabilities
arising under the Securities Act.

 Stockholder
Approval of Certain Matters

 2020
Loan Agreement, 2022 Secured Note, 2020 Warrants, and 2022 Warrants

 In
order to comply with applicable NYSE American listing requirements, the 2020 Loan Agreement and the 2022 Secured Note and the related
Warrant Agreements governing the 2020 Warrants and 2022 Warrants placed certain limits on the number of shares of AgeX common stock that
may be issued to Juvenescence upon conversion of outstanding loan amounts or exercise of the 2020 Warrants or 2022 Warrants prior to
stockholder approval of the issuance of shares to Juvenescence that would result in (a) Juvenescence receiving additional shares in excess
of a 19.9% Cap based on the number of shares of AgeX common stock outstanding as of March 30, 2020 in the case of a conversion of the
outstanding loan amounts under the 2020 Loan Agreement into AgeX common stock, or outstanding as of February 14, 2022 in the case of
a conversion of the outstanding loan amounts under 2022 Secured Note into AgeX common stock, for less than the greater of book value
or the applicable tranche market values of AgeX common stock as of March 20, 2020 or February 14, 2022, or (b) Juvenescence owning 50%
or more of the outstanding AgeX common stock (the 50% Cap) in the case of a conversion of the outstanding loan amounts under the 2020
Loan Agreement or the 2022 Secured Note or the exercise of the 2020 Warrants or 2022 Warrants. As required by the terms of the 2020 Loan
Agreement and the 2022 Secured Note, AgeX sought and obtained the vote of AgeX stockholders approving (i) the ability of AgeX and Juvenescence
to convert the loans under the 2020 Loan Agreement and the 2022 Secured Note into shares of AgeX common stock under the applicable loan
conversion provisions even if the conversion would result in (a) Juvenescence receiving additional shares in excess of the 19.9% Cap
or the 50% Cap limits, and (ii) the ability of Juvenescence to exercise its 2020 Warrants and 2022 Warrants even if the exercise would
cause Juvenescence's ownership of AgeX common stock to equal or exceed the 50% Cap limit.

 Series
A Preferred Stock and Series B Preferred Stock

 At
the 2023 annual meeting of stockholders, AgeX sought and obtained the vote of AgeX stockholders approving a proposal eliminating the
19.9% Cap and 50% Cap that limited the number of shares of AgeX Series B Preferred Stock that may be converted into shares of AgeX common
stock.

 Indemnification
Agreements

 On
March 13, 2023, AgeX executed a Letter of Indemnification in Lieu of or Supplemental to a Medallion Signature Guarantee (the Letter of
Indemnification) pursuant to which AgeX agreed to indemnify Equiniti Trust Company, LLC (the "Equiniti Indemnity") from and
against any and all claims, damages, liabilities or losses arising out of the transfer of all of the AgeX common stock held by Juvenescence
to its wholly-owned subsidiary, Juvenescence US Corp. (the "Share Transfer"). In connection with the execution of the Letter
of Indemnification, AgeX and Juvenescence entered into a Transfer of Shares of AgeX Therapeutics, Inc. Common Stock – Indemnification
Agreement, pursuant to which Juvenescence agreed to indemnify AgeX against any and all claims, damages, liabilities or losses arising
out of the Share Transfer or the Equiniti Indemnity.

 On
December 21, 2023, AgeX executed that certain Letter of Indemnification in Lieu of or Supplemental to a Medallion Signature Guarantee
(the "ETC Letter of Indemnification"), pursuant to which AgeX agreed to indemnify Equiniti Trust Company LLC and its affiliates,
successors and assigns (the "ETC Indemnity") from and against any and all claims, damages, liabilities or losses arising
out of the transfer 467,657 shares of AgeX common stock held by Juvenescence US Corp. to JuvVentures (UK) Limited (the "JUV US
Share Transfer"). In connection with AgeX's execution of the Letter of Indemnification, AgeX and Juvenescence Limited, the
ultimate parent company of Juvenescence US Corp. and JuvVentures (UK) Limited, entered into that certain Transfer of Shares of AgeX Therapeutics,
Inc. Common Stock – Indemnification Agreement, pursuant to which Juvenescence agreed to indemnify AgeX against any and all claims,
damages, liabilities or losses arising out of the JUV US Share Transfer or the ETC Indemnity.

Independence

 Jean-Christophe Renondin and Steven Mintz qualify as "independent" in accordance with Section 803(A) of the NYSE
American Company Guide. Michael May whose term as a director expired at the 2023 annual meeting of stockholders, also qualified as independent
under that standard, as did Joanne Hackett until she was appointed Interim Chief Executive Officer. The members of our Audit Committee
meet the additional independence standards under Section 803(B)(2) of the NYSE American Company Guide and Rule 10A-3 under the Securities
Exchange Act of 1934, as amended (the "Exchange Act"). The members of our Compensation Committee meet the additional independence
standards under Section 805(c)(1) of the NYSE American Company Guide. Our independent directors received no compensation or remuneration
during the last fiscal year for serving as directors except as disclosed under "Non-Employee Director Compensation" in Item
11 of this Report. None of the independent directors, nor any of the members of their respective families, have participated in any transaction
with us that would disqualify them as "independent" directors under the standards described above.

H. Bailey does not meet the independence standard because he is a director
and former chief executive officer of Juvenescence, which is our largest stockholder that beneficially owns approximately 81.1% of our
common stock as reflected in the table included in Item 12 to this Report. Joan Hackett does not meet the independence standard because
she is our Interim Chief Executive Officer.

 Item
14. Principal Accounting Fees and Services

 Audit
Fees, Audit Related Fees, Tax Fees and Other Fees

 The
following table sets forth the aggregate fees billed to us during the fiscal years ended December 31, 2023 and 2022 by WithumSmith+Brown,
PC ("Withum"):

 2023

 2022

 Audit Fees (1)

 $
 483,000

 $
 358,000

 Audit Related (2)

 -

 53,000

 $
 483,000

 $
 411,000

 (1)

 Audit
 Fees consist of fees billed for professional services rendered for the audit of our annual financial statements included in our Annual
 Report on Form 10-K, and review of interim financial statements included in our Quarterly Reports on Form 10-Q, and services that
 are normally provided by our independent registered public accountants in connection with statutory and regulatory filings or engagements.

 (2)

 Audit-Related
 Fees relate to assurance and related services that are reasonably related to the performance of the audit or review of our consolidated
 financial statements and are not reported under "Audit Fees." This category would include fees related to non-routine
 SEC filings.

 Pre-Approval
of Audit and Permissible Non-Audit Services

 Our
Audit Committee requires pre-approval of all audit and non-audit services. Other than de minimis services incidental to audit
services, non-audit services shall generally be limited to tax services such as advice and planning and financial due diligence services.
All fees for such non-audit services must be approved by the Audit Committee, except to the extent otherwise permitted by applicable
SEC regulations. The Audit Committee may delegate to one or more designated members of the Audit Committee the authority to grant pre-approvals,
provided such approvals are presented to the Audit Committee at a subsequent meeting. During 2023 and 2022, 100% of the fees paid to
Withum were approved by the Audit Committee.

 PART
IV

 Item
15. Exhibits and Financial Statement Schedules

 (a)(1)
Financial Statements

 The
following financial statements of AgeX are filed in this Report:

 Audited
Consolidated Financial Statements

 Consolidated Balance Sheets

 Consolidated Statements of Operations

 Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity/(Deficit)

 Consolidated Statements of Cash Flows

 Notes to Consolidated Financial Statements

 (a)(2)
Financial Statement Schedules

 All
other schedules are omitted because they are not required or the required information is included in the financial statements or notes
thereto.

 (a)(3)
Exhibits

 The
following exhibits are filed herewith or incorporated by reference:

 Incorporation
 By Reference

 Exhibit

 Description
 of Document

 Form

 SEC
 File No.

 Exhibit

 Filing
 Date

 2.1#

 Asset Purchase Agreement, dated as of August 13, 2018, by and between Escape Therapeutics, Inc. and AgeX Therapeutics, Inc.

 A-2

 2.1

 8/30/2018

 3.1*

 Certificate of Incorporation, as amended, of AgeX Therapeutics, Inc.

 3.2

 Bylaws of AgeX Therapeutics, Inc.

 3.2

 6/8/2018

 4.1

 Specimen of Common Stock Certificate AgeX Therapeutics, Inc.

 A-2

 4.1

 8/30/2018

 4.2

 Form of Warrant included in Warrant Agreement dated March 30, 2020.

 10.25

 3/30/2020

 4.3

 Form of Warrant included in Warrant Agreement dated February 14, 2022.

 4.4*

 Form of Post-Merger Warrant included in Warrant Agreement
 dated March 19, 2024.

 4.5*

 Form of Incentive Warrant included in Warrant Agreement
 dated March 19, 2024.

 4.6

 Description of Securities.

 4.4

 3/31/2023

 10.1#

 Asset Contribution and Separation Agreement dated August 17, 2017, between Lineage Cell Therapeutics, Inc. and AgeX Therapeutics, Inc.

 001-12830

 10.1

 11/9/2017

 10.2#

 License Agreement, dated August 17, 2017, between Lineage Cell Therapeutics, Inc. and AgeX Therapeutics, Inc.

 001-12830

 10.2

 11/9/2017

 10.3

 AgeX Therapeutics, Inc. 2017 Equity Incentive Plan.

 S-8

 99.1

 10.4

 Form of AgeX Therapeutics, Inc. Employee Stock Option Agreement.

 S-8

 99.2

 10.5

 Form of AgeX Therapeutics, Inc. Non-Employee Director Stock Option Agreement.

 S-8

 99.3

 10.6

 Form of AgeX Therapeutics, Inc. Restricted Stock Agreement.

 S-8

 99.4

 10.7

 Form of AgeX Therapeutics, Inc. Restricted Stock Unit Agreement.

 S-8

 99.5

 10.8#

 Sublicense Agreement, dated September 26, 2017, between Lineage Cell Technology, Inc. and AgeX Therapeutics, Inc.

 A-1

 10.7

 7/19/2018

 10.9#

 License Agreement, dated August 17, 2017, by and between ES Cell International Ptd Ltd., Lineage Cell Therapeutics, Inc. and AgeX Therapeutics, Inc.

 A-1

 10.11

 7/19/2018

 10.10

 Employment Agreement, by and between AgeX Therapeutics, Inc. and Hal Sternberg, dated August 21, 2017.

 10.17

 6/8/2018

 10.11

 Tax Matters Agreement, dated August 17, 2017, between Lineage Cell Therapeutics, Inc. and AgeX Therapeutics, Inc.

 A-1

 10.15

 7/19/2018

 10.12

 Form of Registration Rights Agreement.

 A-1

 10.16

 7/19/2018

 10.13

 Registration Rights Agreement, dated August 13, 2019, between AgeX Therapeutics, Inc. and Juvenescence Limited.

 10.3

 8/14/2019

 10.14

 Warrant Agreement, dated March 30, 2020, between AgeX Therapeutics, Inc. and Juvenescence Limited, including form of warrant.

 10.25

 3/30/2020

 10.15

 Amendment No. 1 to Registration Rights Agreement, dated March 30, 2020, between AgeX Therapeutics, Inc. and Juvenescence Limited.

 10.26

 3/30/2020

 10.16

 Employment Agreement, by and between AgeX Therapeutics, Inc. and Andrea E. Park, dated May 15, 2020.

 10.3

 8/14/2020

 10.17

 First Amendment to Warrant Agreement, dated July 21, 2020, between AgeX Therapeutics, Inc. and Juvenescence Limited

 10.2

 8/14/2020

 10.18

 Amendment No. 2 to Registration Rights Agreement, dated February 10, 2021, between AgeX Therapeutics, Inc. and Juvenescence Limited.

 10.2

 2/11/2021

 10.19

 Amendment to AgeX Therapeutics, Inc. 2017 Equity Incentive Plan.

 S-8

 333-261997

 99.1

 1/4/2022

 10.20

 Secured Note dated February 14, 2022, executed by AgeX Therapeutics, Inc. and Juvenescence Limited.

 10.1

 10.21

 Security Agreement, dated February 14, 2022, between AgeX Therapeutics, Inc. and Juvenescence Limited.

 10.2

 10.22

 Warrant Agreement, dated February 14, 2022, between AgeX Therapeutics, Inc. and Juvenescence Limited.

 10.3

 10.23

 Amendment No. 3 to Registration Rights Agreement, dated February 14, 2022, between AgeX Therapeutics, Inc. and Juvenescence Limited.

 10.4

 10.24

 Amendment to AgeX Therapeutics, Inc. 2017 Equity Incentive Plan

 10.1

 12/12/2022

 10.25

 Amended and Restated Secured Convertible Promissory Note, dated February 9, 2023, executed by AgeX Therapeutics, Inc. and Juvenescence Limited

 10.1

 2/10/2023

 10.26

 Reaffirmation Agreement, dated February 9, 2023, between AgeX Therapeutics, Inc. and Juvenescence Limited

 10.2

 2/10/2023

 10.27

 Secured Convertible Promissory Note dated March 13, 2023, executed by AgeX Therapeutics, Inc. and Juvenescence Limited

 10.1

 3/15/2023

 10.28

 Amended and Restated Security Agreement, dated March 13, 2023, between AgeX Therapeutics, Inc. and Juvenescence Limited.

 10.2

 3/15/2023

 10.29

 Convertible Promissory Note, dated March 15, 2023, between AgeX Therapeutics, Inc. and Serina Therapeutics, Inc.

 10.4

 3/15/2023

 10.30

 Subordination Agreement, dated March 15, 2023, between AgeX Therapeutics, Inc., Serina Therapeutics, Inc. and the other investors signatory thereto

 10.5

 3/15/2023

 10.31

 Allonge and Second Amendment to Amended and Restated Convertible Promissory Note dated May 9, 2023, between AgeX Therapeutics, Inc. and Juvenescence Limited.

 10.9

 5/12/2023

 10.32

 Third Amendment to Amended and Restated Secured Convertible Promissory Note, dated June 2, 2023, executed by AgeX Therapeutics, Inc. and Juvenescence Limited.

 10.1

 6/8/2023

 10.33

 Registration Rights Agreement, dated July 21, 2023, between AgeX Therapeutics, Inc. and Juvenescence Limited

 10.2

 7/21/2023

 10.34

 Fourth Amendment to Amended and Restated Secured Convertible Promissory Note, executed by AgeX Therapeutics, Inc. and Juvenescence Limited on July 31, 2023

 10.1

 8/4/2023

 10.35

 Amendment to Secured Convertible Promissory Note, executed by AgeX Therapeutics, Inc. and Juvenescence Limited on July 31, 2023

 10.2

 8/4/2023

 10.36

 Transition Services and Separation Agreement, dated August 9, 2023, between AgeX Therapeutics, Inc. and Michael D. West.

 10.7

 8/14/2023

 10.37

 Consulting Agreement, dated August 9, 2023, between AgeX Therapeutics, Inc. and Joanne Hackett

 10.8

 8/14/2023

 10.38

 Form of AgeX Therapeutics, Inc. Stockholder Support Agreement

 10.1

 10.39

 Form of Serina Therapeutics, Inc. Stockholder Support Agreement

 10.2

 10.40

 Form of AgeX Therapeutics, Inc. Lock-Up Agreement

 10.3

 10.41

 Form of Serina Therapeutics, Inc. Lock-Up Agreement

 10.4

 10.42

 Letter Agreement, dated August 29, 2023, by and among AgeX Therapeutics, Inc., Serina Therapeutics, Inc. and Juvenescence Limited

 10.5

 10.43

 Amendment to Transition Services and Separation Agreement, dated October 31, 2023, between AgeX Therapeutics, Inc. and Michael D. West

 10.12

 10.44

 Allonge and Fifth Amendment to Amended and Restated Convertible Promissory Note, dated November 9, 2023, between AgeX Therapeutics, Inc. and Juvenescence Limited

 10.13

 10.45

 Form of Pledge Agreement by AgeX Therapeutics, Inc.

 10.14

 10.46

 Guaranty Agreement, dated November 9, 2023, between Reverse Bioengineering, Inc., ReCyte Therapeutics, Inc., UniverXome Bioengineering, Inc. and Juvenescence Limited

 10.15

 10.47

 Joinder Agreement, dated November 9, 2023, between Reverse Bioengineering, Inc., ReCyte Therapeutics, Inc., UniverXome Bioengineering, Inc., AgeX Therapeutics, Inc. and Juvenescence Limited

 10.16

 10.48

 Sixth Amendment to Amended and Restated Convertible Promissory Note, dated February 9, 2024, between AgeX Therapeutics, Inc. and Juvenescence Limited

 10.1

 2/14/2024

 10.49*

 Warrant Agreement, dated March 19, 2024 between AgeX Therapeutics, Inc. and Equinity Trust Company, LLC

 21.1*

 List of Subsidiaries

 23.1*

 Consent of WithumSmith+Brown, PC

 31*

 Rule 13a-14(a)/15d-14(a) Certification

 32**

 Section 1350 Certification

 97.1*

 AgeX Therapeutics, Inc. Clawback Policy

 101.INS*

 101.SCH*

 101.CAL*

 101.DEF*

 101.LAB*

 101.PRE*

 Cover

 *

 Filed
 herewith.

 **

 Furnished
 herewith.

 #

 Confidential
 treatment has been granted with respect to portions of this exhibit (indicated by asterisks) and those portions have been separately
 filed by Lineage Cell Therapeutics, Inc. with the Securities and Exchange Commission.

 schedules and exhibits to this agreement have been omitted in accordance with Item 601(b)(2) of Regulation S-K. A copy of any omitted
 schedule and/or exhibit will be furnished to the Securities and Exchange Commission on request.

 Management
 contract or compensatory plan.

 (b)
See (a)3 Exhibits

 (c)(1)
Separate Financial Statements of subsidiaries not consolidated and fifty percent or less owned persons

 AgeX
consolidates NeuroAirmid Therapeutics, Inc. despite not having majority ownership interest as it has the ability to influence decision
making and financial results through contractual rights and obligations as per ASC 810, Consolidation. For further discussion
on principles of consolidation, see Note 1, Organization, Basis of Presentation and Liquidity to the consolidated financial statements
included elsewhere in this Report.

 (c)(2)
Financial Statements of affiliates whose securities are pledged as collateral

 Presented
below are the unaudited financial statements of ReCyte Therapeutics, Inc. of which AgeX holds approximately 94.8% of its shares of common
stock issued and outstanding and Reverse Bioengineering, Inc., a wholly owned subsidiary of AgeX whose securities are pledged as collateral
to Juvenescence in connection with the debt agreements with Juvenescence. AgeX's security interests in UniverXome Bioengineering,
Inc. (UniverXome), a wholly owned subsidiary of AgeX is pledged as collateral to Juvenescence in connection with the debt agreements
with Juvenescence, but UniverXome has no financial statement transactions as of December 31, 2023. For further information on debt agreements
with Juvenescence, see Note 5, Related Party Transactions, to the consolidated financial statements included elsewhere in this
Report.

 RECYTE

 BALANCE
SHEETS

 ( In
thousands, except par value amounts)

 2023

 2022

 LIABILITIES AND STOCKHOLDERS' DEFICIT

 Current liabilities:

 $

 $
 -

 Amount due to AgeX

 TOTAL LIABILITIES

 Stockholders' deficit:

 Preferred stock, no par value, authorized 5,000 shares; none issued and outstanding

 -

 -

 Common stock, no par value, 50,000 shares authorized; 25,305 shares issued and outstanding

 Accumulated deficit

 (15,950
)

 (15,923
)

 Total ReCyte Therapeutics, Inc. stockholders' deficit

 (846
)

 (819
)

 Noncontrolling interest

 (46
)

 (45
)

 Total stockholders' deficit

 (892
)

 (864
)

 TOTAL LIABILITIES AND STOCKHOLDERS' DEFICIT

 $
 -

 $
 -

 RECYTE

OF OPERATIONS

 (In
thousands, except per share data)

 2023

 2022

 OPERATING EXPENSES

 General and administrative

 $

 $

 NET LOSS

 Net loss attributable to noncontrolling interest

 (1
)

 (2
)

 NET LOSS ATTRIBUTABLE TO RECYTE

 $

 $

 NET LOSS PER COMMON SHARE:

 $
 -

 $
 -

 WEIGHTED-AVERAGE NUMBER OF COMMON SHARES OUTSTANDING:

 RECYTE

OF STOCKHOLDERS' DEFICIT

 (In

 Common Stock

 Total

of Shares

 Accumulated
Deficit

 Noncontrolling
Interest

 Stockholders'
Deficit

 BALANCE AT DECEMBER 31, 2021

 $

 $
 (15,885
)

 $
 (43
)

 $
 (824
)

 -

 -

 (38
)

 (2
)

 (40
)

 BALANCE AT DECEMBER 31, 2022

 (15,923
)

 (45
)

 (864
)

 -

 -

 (27
)

 (1
)

 (28
)

 BALANCE AT DECEMBER 31, 2023

 $

 $
 (15,950
)

 $
 (46
)

 $
 (892
)

 RECYTE

OF CASH FLOWS

 (In

 2023

 2022

 OPERATING ACTIVITIES:

 Net loss attributable to ReCyte

 $
 (27
)

 $
 (38
)

 Net loss attributable to noncontrolling interest

 (2
)

 (2
)

 Changes in operating assets and liabilities:

 (1
)

 Amount due to AgeX

 Net cash used in operating activities

 -

 -

 NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH

 -

 -

 CASH, CASH EQUIVALENTS AND RESTRICTED CASH:

 At beginning of the year

 -

 -

 At end of the year

 $
 -

 $
 -

 REVERSE
BIOTHERAPEUTICS, INC.

 BALANCE
SHEETS

 ( In
thousands, except par value amounts)

 2023

 2022

 LIABILITIES AND STOCKHOLDERS' DEFICIT

 Current liabilities:

 $

 $

 Amount due to AgeX

 1,505

 TOTAL LIABILITIES

 1,530

 Stockholders' deficit:

 Preferred stock, $0.0001 par value, authorized 5,000 shares; none issued and outstanding

 -

 -

 Common stock, $0.0001 par value, 100,000 shares authorized; 1 shares issued and outstanding, respectively

 -

 -

 Accumulated deficit

 (1,530
)

 (936
)

 Total stockholders' deficit

 (1,530
)

 (936
)

 TOTAL LIABILITIES AND STOCKHOLDERS' DEFICIT

 $
 -

 $
 -

 REVERSE
BIOTHERAPEUTICS, INC.

OF OPERATIONS

 (In
thousands, except per share data)

 2023

 2022

 OPERATING AND ORGANIZATION EXPENSES

 Research and development

 $

 $

 General, administrative and organization

 NET LOSS

 $

 $

 NET LOSS PER COMMON SHARE:

 $
 (594
)

 $
 (548
)

 WEIGHTED-AVERAGE NUMBER OF COMMON SHARES OUTSTANDING:

 REVERSE
BIOTHERAPEUTICS, INC.

OF STOCKHOLDERS' DEFICIT

 (In

 Common Stock

 Total

 of Shares

 Par
 Value

 Accumulated
 Deficit

 Stockholders'
 Deficit

 BALANCE AT DECEMBER 31, 2021

 -

 $
 -

 $
 (388
)

 $
 (388
)

 Issuance of common stock to AgeX in connection with Asset Contribution Agreement

 -

 -

 -

 -

 -

 (548
)

 (548
)

 BALANCE AT DECEMBER 31, 2022

 -

 (936
)

 (936
)

 -

 -

 (594
)

 (594
)

 BALANCE AT DECEMBER 31, 2023

 $
 -

 $
 (1,530
)

 $
 (1,530
)

 REVERSE
BIOTHERAPEUTICS, INC.

OF CASH FLOWS

 (In

 2023

 2022

 OPERATING ACTIVITIES:

 $
 (594
)

 $
 (548
)

 Changes in operating assets and liabilities:

 (28
)

 Amount due to AgeX

 Net cash used in operating activities

 -

 -

 NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH

 -

 -

 CASH, CASH EQUIVALENTS AND RESTRICTED CASH:

 At beginning of the year

 -

 -

 At end of the year

 $
 -

 $
 -

 SUPPLEMENTAL SCHEDULE OF NONCASH FINANCING AND INVESTING ACTIVITIES:

 Issuance of 1 common stock to AgeX in connection with Asset Contribution Agreement in 2022

 $
 -

 $
 -

 (c)(3)
Schedules

 All
other schedules are omitted because they are not required or the required information is included in the financial statements.

 Item
16. Form 10-K Summary

 None.

 SIGNATURES

 Pursuant
to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report on Form
10-K to be signed on its behalf by the undersigned, thereunto duly authorized on the 22 nd day of March 2024.

 AGEX

 By:

 /s/
 Joanne M. Hackett

 M. Hackett

 Chief Executive Officer

 Signature

 Title

 Date

 /s/
 Joanne M. Hackett

 Chief Executive Officer

 March

 JOANNE
 M. HACKETT

 (Principal
 Executive Officer)

 /s/
 Andrea E. Park

 Chief
 Financial Officer

 March

 ANDREA
 E. PARK

 (Principal
 Financial and Accounting Officer)

 /s/
 Gregory H. Bailey

 March

 GREGORY
 H. BAILEY

 /s/
 Jean-Christophe Renondin

 March

 JEAN-CHRISTOPHE
 RENONDIN

 /s/
 Steven Mintz

 March

 STEVEN
 MINTZ