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 UNITED STATES

 SECURITIES AND EXCHANGE COMMISSION

 Washington, D.C. 20549

 FORM 10-K

 (Mark One)

 ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

 For the fiscal year ended December 31, 2023

 TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

 For the transition period from ________to ________

 Commission file number 001-37568

 PDS Biotechnology Corp oration

 (Exact name of registrant as specified in its charter)

 Delaware

 26-4231384

 (State or other jurisdiction of incorporation or organization)

 (IRS Employer Identification No.)

 303A College Road East Princeton, NJ 08540

 (Address of principal executive offices)

 ( 800) 208-3343

 (Registrant's telephone number)

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

 Title of each class

 Trading symbol(s)

 Name of each exchange on which registered

 Common Stock, par value $0.00033 per share

 PDSB

 The NASDAQ Stock Market LLC

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

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

 Indicate 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

 Indicate 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

 Indicate 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 (Section 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

 Indicate 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 pursuant to Section 13(a) of the Exchange Act. Yes No

 Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its 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.

 Indicate 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).

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

 The aggregate market value of the voting and non-voting common equity held by non-affiliates (without admitting that any person whose shares are not
 included in such calculation is an affiliate) of the registrant as of June 30, 2023, was $ 148,298,700 (based on the closing price for
 shares of the registrant's common stock as reported on the Nasdaq Capital Market on that date).

 The number of shares of the registrant's common stock, par value $0.00033 per share, outstanding as of March 21, 2024 was 36,679,275.

 Documents Incorporated By Reference

 Portions of registrant's definitive proxy statement relating to registrant's 2024 Annual Meeting of Stockholders (the "Proxy Statement") to be filed
 with the Securities and Exchange Commission pursuant to Regulation 14A, not later than 120 days after the close of the registrant's fiscal year ended December 31, 2023, are incorporated by reference in Part III of this Annual Report on Form 10-K.
 Except with respect to information specifically incorporated by reference in this Annual Report on Form 10-K, the Proxy Statement is not deemed to be filed as part of this Annual Report on Form 10-K.

 PDS BIOTECHNOLOGY CORPORATION

 FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 2023

 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 Issuers Purchases of Equity Securities

 Item 7

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

 Item 7A

 Qualitative 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

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

 Item 13

 Certain Relationships and Related Transactions and Director Independence

 Item 14

 Principal Accountant Fees and Services

 Item 15

 Exhibits and Financial Statement Schedules

 Item 16

 Form 10-K Summary

 Signatures

 Cautionary Note Regarding Forward-Looking Statements

 This Annual Report on Form 10-K (this "Annual Report") contains forward-looking statements (including within the meaning of Section 21E of the United States Securities
 Exchange Act of 1934, as amended, and Section 27A of the United States Securities Act of 1933, as amended) concerning the Company and other matters. These statements may discuss goals, intentions and expectations as to future plans, trends,
 events, results of operations or financial condition, or otherwise, based on current beliefs of the Company's management, as well as assumptions made by, and information currently available to, management. Forward-looking statements generally
 include statements that are predictive in nature and depend upon or refer to future events or conditions, and include words such as "may," "will," "should," "would," "expect," "anticipate," "plan," "likely," "believe," "estimate," "project,"
 "intend," "forecast," "guidance", "outlook" and other similar expressions among others. Forward-looking statements are based on current beliefs and assumptions that are subject to risks and uncertainties and are not guarantees of future
 performance. Actual results could differ materially from those contained in any forward-looking statement as a result of various factors, including, without limitation.

 the Company's ability to protect its intellectual property rights;

 the Company's anticipated capital requirements, including the Company's anticipated cash runway and the Company's current expectations regarding its plans for future equity financings;

 the Company's dependence on additional financing to fund its operations and complete the development and commercialization of its product candidates, and the risks that raising such additional capital may
 restrict the Company's operations or require the Company to relinquish rights to the Company's technologies or product candidates;

 the Company's limited operating history in the Company's current line of business, which makes it difficult to evaluate the Company's prospects, the Company's business plan or the likelihood of the
 Company's successful implementation of such business plan;

 the timing for the Company or its partners to initiate the planned clinical trials for its Versamune products, including PDS0101, PDS0103, and others, alone or in combination with PDS01ADC (formerly known as
 PDS0301/M9241/NHS-IL-12), as well as Infectimune based products and the future success of such trials

 the successful implementation of the Company's research and development programs and collaborations, including any collaboration studies concerning Versamune, PDS01ADC and Infectimune based products and
 the Company's interpretation of the results and findings of such programs and collaborations and whether such results are sufficient to support the future success of the Company's product candidates;

 the success, timing and cost of the Company's ongoing clinical trials and anticipated clinical trials for the Company's current product candidates, including statements regarding the timing of initiation,
 pace of enrollment and completion of the trials (including our ability to fully fund our disclosed clinical trials, which assumes no material changes to our currently projected expenses), futility analyses, presentations at conferences
 and data reported in an abstract, and receipt of interim results (including, without limitation, any preclinical results or data), which are not necessarily indicative of the final results of the Company's ongoing clinical trials;

 expectations for the clinical and preclinical development, manufacturing, regulatory approval, and commercialization of our product candidates;

 any Company statements about its understanding of product candidates' mechanisms of action and interpretation of preclinical and early clinical results from its clinical development programs and any
 collaboration studies; the acceptance by the market of the Company's product candidates, if approved;

 the timing of and the Company's ability to obtain and maintain U.S. Food and Drug Administration or other regulatory authority approval of, or other action with respect to, the Company's product candidates;
 and

 other factors, including legislative, regulatory, political and economic developments not within the Company's control, including those listed under Part II, Item 1A. Risk Factors.

 Any forward-looking statements in this Annual Report reflect our current views with respect to future events or to our future financial performance and involve known and
 unknown risks, uncertainties and other factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by these forward-looking
 statements. Given these uncertainties, you should not place undue reliance on these forward-looking statements. Except as required by law, we assume no obligation to update or revise these forward-looking statements for any reason, whether as a
 result of new information, future events or otherwise.

 In this Annual Report, unless otherwise stated or the context otherwise indicates, references to "PDS Biotech," "the Company," "we," "us," "our" and similar references refer
 to PDS Biotechnology Corporation, a Delaware corporation.

 Unless the context requires otherwise, references in this report to "PDS Biotech," "Company," "we," "us,"and "our" and similar designations refer to PDS
 Biotechnology Corporation and our subsidiary.

 ITEM 1.

 Business

 Company Overview

 We are a clinical-stage immunotherapy company developing a growing pipeline of targeted cancer immunotherapies based on our Versamune T cell-activator and Versamune in
 combination with our interleukin 12 (IL-12) fused antibody drug conjugate (ADC), PDS01ADC, a tumor targeting immunocytokine. In addition, we are developing the Infectimune T cell-activator in infectious diseases.

 We believe our investigational targeted immunotherapies have the potential to overcome the limitations of current immunotherapy approaches through effective conversion of the
 immune suppressive tumor to an immunogenic microenvironment in addition to the induction of the right type, potency and quantity of tumor-targeting killer (CD8) T cells. Our Versamune immunotherapies and Versamune in combination with
 PDS01ADC, are utilized for treatments in oncology, and Infectimune is utilized for preventive vaccines against infectious agents. When paired with an antigen, which is a disease-related protein that is recognizable by the immune system,
 Versamune and Infectimune have both been shown to induce, in vivo, large quantities of high-quality, highly potent polyfunctional disease-specific CD4 helper and CD8 killer T cells, a specific
 sub-type of T cell that has shown potential to be more effective at killing infected or target cells. Infectimune is also designed to promote the induction of disease-specific neutralizing antibodies. PDS01ADC is an investigational tumor
 targeting IL-12 that we believe may enhance the proliferation, potency and longevity of T cells in the tumor microenvironment and reduces the prevalence of immune suppressive cells and components within the tumor. We believe that our
 proprietary combination of Versamune and PDS01ADC may enhance the proliferation, potency and longevity of antigen specific multifunctional CD8 T cells in the tumor microenvironment and work synergistically to inhibit or treat cancer.

 In November 2022, we announced the presentation of data from two Phase 2 clinical trials at the 37 th
 Annual Meeting for the Society of Immunotherapy of Cancer (SITC): Abstract number 674, IMMUNOCERV, an ongoing Phase 2 trial combining PDS0101, an HPV-specific T cell immunotherapy, with chemotherapy and radiation for treatment of locally
 advanced cervical cancers and Abstract number 695, "Immune correlates associated with clinical benefit in patients with immune checkpoint refractory HPV-associated malignancies treated with triple combination immunotherapy".

 In December 2022, we executed an exclusive global license agreement with Merck KGaA, Darmstadt, Germany for the tumor targeting IL12 fused antibody drug conjugate, M9241, which joined our
 pipeline as PDS01ADC. PDS01ADC is a novel investigational tumor-targeting fusion protein of IL-12 that enhances the proliferation, potency, infiltration and longevity of T cells in the tumor microenvironment and is therefore designed to overcome
 the limitations of cytokine therapy, specifically high toxicity and limited therapeutic potential. The proprietary combination of Versamune and PDS01ADC is designed to overcome tumor immune suppression utilizing a different mechanism from immune
 checkpoint inhibitors (ICI). The combination of Versamune and IL-12 to overcome immune suppression is patented by PDS Biotech, and we believe our ownership of both assets will streamline the clinical
 development, registrational process and their potential therapeutic use. In a Phase 2 National Cancer Institute (NCI)-led clinical trial in Immune checkpoint
 inhibitor (ICI) resistant patients, the combination of PDS0101 and PDS01ADC administered with an investigational bi-functional ICI resulted in a median overall survival of approximately 20 months. The historical median survival reported in ICI
 resistant HPV-positive cancers when treated with ICIs is 3-4 months and best reported median survival to date with systemic therapy is 8.2 months in ICI resistant head and neck cancer.

 In February 2023, we announced a successful completion of a Type B meeting with the FDA for the triple combination of PDS0101 and PDS01ADC with an FDA-approved immune
 checkpoint inhibitor for the treatment of recurrent/metastatic, ICI resistant head and neck cancer that is positive for the human papilloma virus (HPV) type 16. In recent interactions with the FDA, we confirmed the required contents of a clinical
 protocol for the potential registrational trial.

 In June 2023, an abstract was presented at the 2023 American Society of Clinical Oncology: Abstract number 6012, "Safety and Efficacy of Immune Checkpoint Inhibitor Na ve Cohort from Study of
 PDS0101 and Pembrolizumab in HPV16-Positive Head and Neck Squamous Cell Carcinoma (HNSCC)". The abstract was also selected as one of the featured posters reviewed by an expert panel in the Head and Neck Cancer discussion session.

 In September 2023, data on our investigational universal flu vaccine, PDS0202, was presented at the 9 th European
 Scientific Working Group on Influenza (ESWI) conference. This data demonstrated broad neutralization across multiple influenza strains in animals and provided protection against infection after challenging animals not previously exposed to flu
 with lethal doses of the pandemic H1N1 flu virus.

 In October 2023, data demonstrating PDS0101 in combination with standard-of-care (SOC) chemoradiotherapy was associated with a rapid decline in human papillomavirus-positive circulating cell-free
 DNA (ctHPV-DNA), a potential predictive biomarker of treatment response. The data from the IMMUNOCERV Phase 2 clinical trial was featured in an oral presentation at the American Society for Radiation Oncology Annual Meeting.

 In October 2023, updated interim data based on an August 2, 2023 cut off from our VERSATILE-002 Phase 2 clinical trial evaluating the combination of PDS0101 in combination with Merck's anti-PD-1
 therapy, Keytruda (pembrolizumab) which is the FDA-approved standard of care for first-line treatment of recurrent/metastatic head and neck cancer was presented at a Company-sponsored key opinion leader roundtable.

 In October 2023, interim safety and immune response data was presented for the first-in-human Phase 1/2 clinical trial evaluating PDS01ADC in combination with current SOC chemotherapy, docetaxel,
 to treat metastatic castration sensitive and castration resistant prostate cancer. The data was featured in an oral presentation at the 11 th Annual Meeting of the
 International Cytokine & Interferon Society.

 In October 2023, immune response data from a preliminary analysis of a subset of patients in our VERSATILE-002 Phase 2 clinical trial was presented at the European Society for Medical Oncology
 Congress 2023.

 In November 2023, we announced updated survival data from our NCI-led Phase 2 trial investigating the triple combination of PDS0101, PDS01ADC and an investigational ICI in two groups of advanced
 cancer patients with various types of human papillomavirus (HPV) 16-positive cancers.

 In November 2023, preclinical data from our NCI-led trial including PDS0101, PDS01ADC and an HDAC inhibitor in ICI-resistant HPV-16 positive cancer was presented during a poster presentation at
 the Society for Immunotherapy of Cancer 38 th Annual Meeting.

 The challenges to effective immunotherapy

 The clinical effectiveness of immunotherapy has been limited by two main challenges: (i) inability to access and convert the tumor to an immunogenic microenvironment, and
 (ii) inability to generate adequate quantities of high-quality killer CD8 T cells. Effective treatments should also minimize systemic toxicities and generate immunological memory. On a fundamental biological or immunological level, one of the
 most significant challenges facing clinicians is the availability of simple and easy to administer therapies that can effectively treat cancer with minimal side effects.

 Cancer Immunotherapy

 Cancer immunotherapy is a form of cancer treatment that utilizes the ability of the body's own immune system to recognize, attack and eliminate cancer. The ultimate goal of
 cancer immunotherapy is to improve patient quality of life and to extend patient life by slowing down progression of the cancer, causing shrinkage of the tumors and in some cases eradication of the cancer. The body's immune system is a complex,
 biological network designed to defend against germs, other microscopic invaders, and cancer cells. Once the immune system recognizes an organism or cell as foreign or dangerous, it begins a series of complex reactions to identify, target and
 eliminate them. This process of events is referred to as mounting an immune response. Cancer immunotherapy takes advantage of the fact that most cancer cells express unique proteins, also called tumor antigens, not normally expressed by healthy
 cells that can be recognized by the immune system as abnormal. Because the immune system is precise, for the most part, a resulting immune response can target these dangerous cancer cells exclusively while sparing healthy cells. However, the
 challenge remains that cancer cells are able by various mechanisms to evade the immune system's surveillance, so the body becomes tolerant to them.

 We believe cancer immunotherapy should have the following attributes to maximize the opportunity for clinical effectiveness in patients:

 Stimulate both tumor-specific killer and helper T cells within the body

 Activate, arm and expand large numbers of T cells that recognize the tumor

 Minimize immune suppression in the tumor microenvironment (TME) to make the cancer more visible or susceptible to attack by the immune system

 Generate immune memory, so that there is a prolonged anti-tumor immune response to treatment

 Optimize safety and tolerability by limiting systemic inflammation and toxicity

 As stated in the June 2019 issue of The Journal of Immunology, a leading peer-reviewed journal in the field of immunology, our Versamune platform possesses each of
 these attributes, inducing potent anti-tumor responses in preclinical studies. (Gandhapudi, et al., J. Immunology, June 2019; Rumfield et al, J. Journal for ImmunoTherapy of Cancer, May 2020). We
 believe our Versamune technology platform in combination with our IL-12 antibody drug conjugate, PDS01ADC, is unique in its ability to successfully encompass the mechanistic attributes required to induce a safe and effective anti-cancer immune
 response in preclinical data.

 How does cancer immunotherapy work?

 An important function of the body's immune system is to scan for proteins not normally expressed in healthy tissue (antigens). Once an antigen has been identified as
 foreign, abnormal or dangerous, the antigen is presented to T cells, a type of white blood cell effective at eliminating cancer cells and infectious agents (e.g. bacteria and viruses). The presentation of an antigen to T cells is implemented
 primarily in the lymph nodes by specialized antigen presenting cells known as dendritic cells which are programmed specially to identify foreign antigens, process them and to present them to T cells. Unique proteins on the surface of dendritic
 cells, known as major histocompatibility complex (MHC) molecules, bind to the foreign antigen and display them on the cell surface for recognition by the appropriate T cells. Then, once presented, a sub-population of T cells known as the CD8 or
 killer T cells, are primed and respond to the specific foreign antigen by attacking and killing the cells containing the abnormal protein. Other T cell sub-populations, such as CD4 or helper T cells, are also critical in regulating immune
 responses.

 Cells communicate via chemical signaling. For an immune response to be triggered and to be effective, important immune signaling pathways must be activated to enable the
 body to induce messenger proteins known as cytokines and chemokines. Some of these cytokines and chemokines serve both to activate and expand T cells and to arm the T cells with the appropriate cancer-killing function.

 An effective cancer immunotherapy must modulate these complex processes, enhancing activation and producing robust expansion of the critically important high-quality,
 tumor-specific T cell populations, most notably CD8 killer cells. As will be reviewed in more detail in the section below, the ability to promote the induction of therapeutic quantities of high-quality tumor-targeting CD8 killer T cells within
 a patient's own body has been a major limitation of cancer immunotherapy.

 Production of adequate numbers of high-quality CD8 killer T cells alone, however, is insufficient to eradicate all cancer cells. One of the difficulties in treating cancer
 stems from the fact that cancer cells have the unique ability to evade the immune system; they camouflage themselves or suppress T cell attack by activating immune mechanisms that suppress the ability of T cells to detect or attack them. They
 accomplish this in part by increasing the population of immune suppressive cells, including cells known as regulatory T cells (Treg) as well as other cell types, within the tumor microenvironment. An effective immunotherapy must overcome the
 tumor's immune suppressive mechanisms in order to successfully locate and attack the cancer cells.

 Finally, cancers can be difficult to cure because they may recur even after successful initial treatment due to micro-metastatic (hidden) tumors that are not completely
 eradicated after treatment and that eventually expand. It is yet another task of the immune system to remain vigilant over a sustained period to mitigate the risk of recurrence. Such vigilance may be mediated by memory T cells which serve as
 the immune system's long-term memory. To be durable and effective over an extended period after treatment, and to minimize the likelihood of cancer recurrence, immunotherapy should enhance this immune function as well.

 Versamune Platform

 Versamune has shown the potential to overcome the challenges of immunotherapy

 Versamune is a proprietary lipid nanoparticle and T cell activating platform designed to overcome the challenges of current immunotherapy and improve the treatment outcomes
 of patients with cancer. Versamune derived products are based on positively charged (cationic) and immune activating lipids that form spherical nanoparticles in aqueous media. These lipids include the R-enantiomer of
 1,2-dioleoyl-e-trimethyl-ammonium-propane (R-DOTAP). Cationic lipids are positively charged molecules that have a water-soluble portion (head group) attached to a water insoluble tail. The water-soluble portion of the molecule has a positive
 charge and the water-insoluble portion is made up of hydrocarbon (also called fatty acid) chains. The nanoparticles, which are coated with a positive charge, are deliberately sized to mimic viruses, facilitating detection by the body's immune
 system and uptake by dendritic cells.

 To treat a specific cancer, the unique or overexpressed antigen found on the surface of the cancer cells is manufactured, then mixed with the Versamune nanoparticles to create a
 pharmaceutical product for simple subcutaneous injection.

 Versamune has the potential to promote dendritic cell update of antigens

 One of the biggest challenges in developing a potent immunotherapy is uptake of the immunotherapy by dendritic cells. Versamune is designed specifically to be taken up by
 dendritic cells in the skin. As noted, Versamune nanoparticles are sized comparably to viruses normally taken up as part of the natural function of the dendritic cells, facilitating efficient uptake of the Versamune based immunotherapy. Studies
 evaluating the uptake of Versamune nanoparticles by dendritic cells and epithelial cells, found almost exclusive uptake by the dendritic cells. Four hours following a single subcutaneous injection, about 80% of the dendritic cells in the
 draining lymph node were found to have taken up the Versamune based immunotherapy.

 Versamune has the potential to promote efficient antigen processing and T cell presentation

 When dendritic cells take up Versamune nanoparticles they become activated, mature and begin recruiting additional dendritic cells. Once inside the dendritic cell, the
 tumor-associated antigen is released and processed into the requisite small peptides (pieces of protein) in the cell compartment known as the cytoplasm. An important potential advantage of Versamune is its ability to fuse with and destabilize
 endosomes in the cell, promoting efficient entry of the antigen into the cell compartment where processing can take place. Processed antigen is turned into peptides that then present in both the MHC class I and class II pathways. The MHC class I
 pathway is critical to programming CD8 killer T cells and the MHC class II pathway to programming CD4 helper T cells to recognize tumor antigens. When Versamune - induced maturation occurs, the dendritic cells express costimulatory molecules on
 their surface, which facilitate the highly efficient uptake and presentation of antigens to the T cells. We believe this activity overcomes one of the most significant limitations of current immunotherapy development – the efficient priming of
 critical CD8 killer T cells against tumor antigens. Versamune has been demonstrated to promote presentation of antigens to CD4 helper T cells as well.

 Versamune has the potential to promote efficient activation and robust expansion of high quality polyfunctional CD8 killer T cells and CD4 helper in
 Lymph Nodes

 Ultimately mature dendritic cells migrate into lymph nodes, small glands located throughout the body containing white blood cells including T cells, where much of the key
 immunological activity pertaining to the priming and expansion of T cells takes place. In the lymph nodes, the dendritic cells present the tumor antigens to T cells resulting in activation or priming of the T cells to recognize the particular
 antigen expressed by the cancer. Importantly, Versamune has also demonstrated the potential to upregulate type I interferon genes (type I IFN), which are responsible for critical immunological processes. Upregulation of type I IFN induces an
 important immunological protein called CD69 that facilitates interactions between the dendritic cell and T cells in the lymph nodes.

 Upregulation of type I IFN signaling also induces multiple immune messenger proteins called cytokines and chemokines that further signal T cells to infiltrate into the lymph
 nodes. Powerful activators of CD8 killer T cells, such as CCL2 and CXCL10 are documented to be induced by Versamune as well. As the Versamune induced production of chemokines appears to be restricted to the lymph nodes, the site of T cell
 activation, it provides for both superior activation and expansion of CD8 killer T cells. Localization of these immune messengers within the lymph nodes and their limited presence in the blood circulation enhances the safety of the Versamune
 based immunotherapies. Thus, through the versality of its mechanisms of action, as understood to date, we believe that Versamune may safely promote the efficient and robust expansion in-vivo of large numbers of highly potent (polyfunctional)
 CD8 killer T cells, both critical factors in developing a successful immunotherapy.

 Versamune has the potential to overcome immune suppression

 Regulatory T cells (Treg) are a sub-population of white blood cells normally responsible for recognizing normal healthy cells and for preventing autoimmune disease. In
 cancer however, they are utilized by the cancer cells to suppress immune detection. Versamune may contribute to significant alteration of the tumor microenvironment by dramatically reducing the Treg to killer CD8 T cell ratio thus making the
 tumors more susceptible to destruction by killer T cells. Preclinical studies have demonstrated that lowering the Treg to CD8 killer T cell ratio with polyfunctional CD8 killer and CD4 helper T cells promotes effective tumor lysis and
 regression. Overcoming a tumor's immune tolerance and minimizing its ability to evade detection is a significant goal of successful cancer immunotherapy that together with potent T cell induction may translate to enhanced tumor elimination.

 In preclinical studies, Versamune (R-DOTAP) nanoparticles demonstrated a reduction in the Treg/CD8 T cell ratio

 Results of Comparative Preclinical Testing of Versamune and Other Immunotherapies for the eradication of a Tumor

 Using the tumor model, the Versamune based therapy was unique in its ability to reduce the tumor size and eventually completely regress the tumors. The results from the
 Versamune based treatment are attributed to its ability to induce: (i) powerful activation of the critical immunological signaling pathways, (ii) robust production of both CD8 killer and CD4 helper T cells, and (iii) the degradation of the
 tumor's protective immune suppression mechanism.

 Versamune has the potential to induce Immune Memory

 Memory T cells allow the body to maintain tumor-recognizing and attacking T cells for an extended period after treatment, with the ideal outcome of reducing cancer
 recurrence. Preliminary studies demonstrated that Versamune protected mice that had experienced tumor regression against tumor reestablishment even when the mice were reinjected with the same tumor cells. This sustained protection was evidence
 of immune memory: persistence of antigen-specific T cells to recognize tumor proteins associated with a particular cancer, as the animals were not protected against establishment of different tumors. Evidence of the potential for Versamune
 based immunotherapies to induce immune memory was also demonstrated in a Phase 1 clinical trial in humans.

 Enhancing tumor-specific memory responses to monitor for tumor antigens and eradicate cancer cells well after initial treatment we believe provides potential for
 significant durable clinical benefit by possibly reducing the incidence of tumor recurrence and improving survival of patients.

 Today, many cancer immunotherapies produce serious systemic autoimmune effects due to blockage of existing regulatory mechanisms such as the immune checkpoints as well as
 inflammatory toxicities due to the increased presence and spikes of cytokines in the blood circulation. We believe the mechanism of action of Versamune as well as its design have the potential to contribute to the localization of cytokines in
 the lymph nodes and specific targeting of CD8 killer T cells to antigens in tumor tissue. Therefore, the hypothesis is that Versamune based therapies may exhibit an improved and favorable safety profile compared to currently available
 treatments.

 As noted, Versamune is injected subcutaneously (under the skin) and its mechanisms of action are localized primarily in the lymph nodes. Further supporting these
 observations are data demonstrating that negligible levels of Versamune induced cytokines were detected in the blood of mice. Very low quantities of Versamune were detected in the blood or in any organ outside of the lymph nodes.

 Additionally, Versamune is broken down (hydrolyzed) in the body into fatty acids and excreted, showing in these preliminary studies that it could mitigate the potential
 for short- or long-term accumulation of the nanoparticles. These preclinical observations have been confirmed by early clinical data documenting that this localized, and highly specific cascade of immune activity was associated with an absence
 of significant systemic toxicity at all doses tested. In a Phase 1 clinical trial designed to evaluate safety, all patients had transient swelling and redness at the injection site due to initiation of the immunological cascade at the injection
 site which cleared completely within 3-7 days and no dose-limiting toxicities or long-term safety concerns were observed. Similarly, in our ongoing Phase 2 trials in combination with other treatments, no dose-limiting toxicities or long-term
 safety concerns were attributed to PDS0101 since three of the four studies were initiated in 2020.

 In choosing and designing a Versamune based therapy for development, careful attention is paid to selecting specific, appropriate antigens because, as described above,
 Versamune induces a strong T cell response to the antigen. All the antigens currently being evaluated in combination with Versamune are present primarily in cancer cells which should therefore result in tumor-specific T cell attack, thereby
 minimizing off-target toxicity and potential destruction of healthy cells and tissue.

 Versamune has the potential to minimize circulating tumor DNA (ctDNA)

 ctDNA is tumor-derived fragmented DNA that is released into a person's blood stream by cancerous cells and tumors. It can come from primary or metastatic cancer sites. We
 believe that the reduction of ctDNA, as a biomarker, has the potential to signify a potential reduction or elimination of cancer. As noted, we believe Versamune may safely promote the efficient and robust expansion in-vivo of large numbers of
 highly potent (polyfunctional) CD8 killer T cells. In an MD Anderson led Phase 2 clinical trial, IMMUNOCERV, where the ctHPV 16 DNA biomarker measured in certain patients decreased in the blood by Day 170 (T5) as HPV16-specific killer T cells
 proliferated in the tumor microenvironment as seen in a representative patient in the chart below.

 Versamune ' s potential as a cancer immunotherapy platform

 The potential ability of Versamune to modulate and enhance numerous critical steps required for an effective immune response may provide additional opportunities to treat a
 variety of cancers. Further, its diverse mechanisms of action together with its favorable safety profile suggest therapeutic promise when used in combination with other treatment modalities or immunotherapies such as immune checkpoint inhibitors
 as well as in the single-agent monotherapy setting.

 PDS0101: Human Papillomavirus (HPV)-Related Cancers

 Despite the successful introduction of HPV preventive vaccines, HPV-related cancers remain a significant component of the global cancer burden. HPV infection occurs in both
 men and women and is associated with head and neck (oropharyngeal), cervical, anal, vaginal, vulvar and penile cancers.

 PDS0101 is our lead Versamune based immunotherapy. PDS0101 combines Versamune with a mixture of short proteins (peptides) derived from the cancer-causing HPV16
 viral protein. HPV16 is the most pervasive and difficult to treat HPV amongst the 13 different high-risk, cancer-causing HPV types. In a preclinical study in the most widely utilized animal HPV-cancer tumor model, PDS0101 uniquely induced
 complete regression of the tumors after a single sub-cutaneous injection. As a result of this data, a Phase 1 open-label, dose-escalation, proof of concept study of PDS0101 in women with cervical intraepithelial neoplasia (CIN) infected with
 high-risk HPV types. The data demonstrated that PDS0101 was immunologically active at all three doses studied, confirmed induction of high levels of active HPV-specific CD8 killer T cells, and was associated with clinical regression of the
 cervical lesions that often occurred rapidly. These results suggest that PDS0101 activated the critical mechanisms in humans resulting in potent T cells which target and effectively kill human HPV-positive cancer cells. All patients who
 experienced regression remained disease-free over the 2-year retrospective evaluation period, suggesting potential durability or memory of the immune response. The clinical data was presented at the 34 th Annual Society for the Immunotherapy of Cancer Conference in November 2019 (Wood, et al., 2019). Based on this encouraging preclinical and human data, PDS0101 is being studied in multiple Phase 2
 clinical trials in various HPV-related cancers one sponsored by the Company in collaboration with Merck and three investigator-initiated trials being conducted by the National Cancer Institute (NCI), MD Anderson Cancer Center and Mayo Clinic.
 We believe the data presented from these Phase 2 clinical trials in 2022 demonstrated favorable results.

 PDS0102: T cell receptor gamma Alternate Reading frame Protein (TARP)-Related Cancers

 The TARP antigen is strongly associated with prostate and breast cancers. In the U.S. 450,000 patients are projected to be diagnosed with prostate or breast cancer this
 year. Approximately 90% of prostate cancers and 50% of breast cancers overexpress the TARP tumor antigen. In a human clinical trial, the NCI demonstrated that its proprietary TARP antigens were effectively recognized by the immune system in
 prostate cancer patients with PSA biochemical recurrence leading to a notable reduction in tumor growth rate. In preclinical studies, a dramatically enhanced TARP-specific killer T cell response was observed when our designed TARP antigens were
 combined with Versamune. As discussed further below, in November 2021, we entered into the NCI Patent License Agreement with the U.S. Department of Health and Human Services, as represented by the NCI of the National Institutes of Health
 (NIH). We obtained a nonexclusive worldwide license to the patent rights for NCI's TARP to develop and commercialize TARP peptide-based therapies in combination with our Versamune technology for the treatment of acute myeloid leukemia,
 prostate and breast cancers. Preclinical development is ongoing.

 PDS0103: Mucin-1 (MUC1)-Related Cancers

 MUC1 is highly expressed in multiple solid tumor types and has been shown to be associated with drug resistance and poor disease prognosis. We are developing PDS0103, a
 Versamune based therapy in combination with novel, highly immunogenic, agonist epitopes of the MUC1 oncogenic C-terminal region to treat ovarian, breast, colorectal and lung cancers. In preclinical studies, a dramatically enhanced
 MUC1-specific killer T cell response was observed when the novel antigens were combined with Versamune. Preclinical development is ongoing.

 Versamune has demonstrated immunological compatibility with a wide array of tumor and pathogenic antigens. While our current oncology pipeline pairs Versamune with 4
 different tumor antigens, to address over 10 cancer types, more than 75 tumor antigens have been identified and reported. We believe that Versamune has the potential to work well with a wide range of identified tumor antigens and neoantigens,
 and we are exploring the expansion of our Versamune based pipeline by pairing the technology with multiple tumor antigens to potentially develop additional product candidates.

 Versamune based immunotherapies plus PDS01ADC as a cancer immunotherapy platform

 PDS01ADC (formerly known as PDS0301/NHS-IL-12/M9241) is a novel investigational antibody conjugated (IgG1), tumor-targeting interleukin 12 (IL-12)
 immune-cytokine that enhances the proliferation, potency and longevity of T cells in the tumor microenvironment. Together with Versamune based immunotherapies PDS01ADC works synergistically to overcome immune suppression and simultaneously
 promote a targeted T cell attack against cancer. As with Versamune, PDS01ADC is given by a simple subcutaneous injection. Clinical data suggests the addition of PDS01ADC to Versamune based immunotherapies may demonstrate significant disease
 control by shrinking tumors and/or prolonging life. In a completed Phase 2 clinical trial conducted by NCI, evaluating PDS0101 and PDS01ADC in combination with M7824 (Bintrafusp alfa), survival
 data for ICI na ve patients from the trial indicated that 75% (6/8) of these patients were still alive at 36 months, and the median overall survival (OS) has not yet been reached. Published data on standard-of-care ICIs report 30-50% of these
 patients typically remain alive at 12 months, and less than 30% of the patients remain alive at 24 months. In the ICI resistant group, the 12-month OS rate was 72% and the triple combination achieved a median OS of approximately 20 months.

 PDS01ADC monotherapy has shown activation of an immune response and correlation with clinical benefit in metastatic solid tumors

 We believe PDS01ADC monotherapy promotes therapeutically relevant immune responses, and stronger immune activation has been observed at higher doses. An analysis of patients at
 baseline and after PDS01ADC monotherapy treatment documented in the graphs below. Interferon-gamma is associated with the induction of natural killer (NK) cells and T cells. Granzyme B is associated with the induction of active killer CD8 T
 cells. Importantly, higher levels of these CD8 T cells were associated with improved clinical outcomes. (Toney NJ et al. International Immunopharmacology 116 (2023) 109736).

 PDS01ADC is differentiated from other IL-12 treatments

 PDS01ADC is a novel investigational immune-cytokine fusion protein composed of two molecules of IL-12 fused to each of the two heavy-chains of a human IGg1 antibody. The
 IGg1 antibody targets the DNA/histones exposed in necrotic areas of solid tumors, thus delivering the IL-12 into the tumor and limiting its systemic accumulation. As seen in the chart below, PDS01ADC (PDS0301) shows low accumulation in blood
 circulation potentially promoting safety.

 Infectimune has potential as an infectious disease vaccine platform

 PDS Biotech has developed a second cationic platform that is being applied to the development of infectious disease vaccines and this specific formulation has been
 trademarked Infectimune. It has been formulated to activate the immune system to induce rapid and longer-lasting neutralizing antibody responses for improved protection against infectious pathogens. Preclinical studies suggest that it has
 the potential to induce T cell responses including memory T cell responses to provide the immune system with long-term memory and potential sustained protection against infectious pathogens over an extended period of time that may exceed
 traditional antibody-based protection. We believe it could provide safe and effective vaccines that are well tolerated by healthy individuals.

 PDS0202: Universal influenza vaccine

 According to the World Health Organization, influenza causes 3 to 5 million cases and approximately 290,000 to 650,000 deaths each year. Due to the existence of multiple
 strains of flu, a new seasonal flu vaccination is usually developed to provide protection against the strains predicted to be prevalent in an upcoming flu season. As a result, the protective efficacy of the current vaccines varies widely from
 season to season. We are developing a new generation of flu vaccines with the potential to provide long-lasting, and broad protection against multiple strains of the virus. We believe that the successful development of a universal flu vaccine
 could eliminate the need to create a vaccine to protect against each year's predicted variants. Our Infectimune platform is combined with computationally optimized broadly reactive antigen (COBRA) to potentially provide longer lasting, more
 effective response to the influenza vaccine. In the fourth quarter of 2021, we entered into a Patent License Agreement with the University of Georgia (UGA) which provides a nonexclusive license to the patent rights for UGA's COBRA antigens to
 develop and commercialize a universal influenza vaccine worldwide. The UGA Patent License Agreement includes customary milestone payments and royalties.

 In February 2023, we announced preclinical Infectimune publication in peer reviewed journal Viruses showing unique induction of high levels of multifunctional CD4+ T cells capable of broadly protective functions compared to leading commercial vaccine technologies (Henson TR et al. Viruses 2023, 15, 538).

 Also in February 2023, we announced a second preclinical Infectimune publication in peer reviewed journal Viruses showing complete protection in animal studies with PDS0202, a novel recombinant investigational protein-based universal flu vaccine (Gandhapudi SK et al. Viruses 2023, 15, 432).

 Oncology Development Strategy

 The unique combination of high potency and favorable safety profile of the Versamune platform observed in preclinical studies was corroborated in the successfully completed
 12-patient PDS0101 monotherapy Phase 1/2a clinical trial. All patients were infected with cancer causing (high risk) strains of HPV, which are less likely to spontaneously regress. In September 2019, we reported retrospective clinical outcome
 data from this trial. Despite most of the patients being infected with multiple HPV strains including or excluding HPV 16, regression was seen in 8 out of 10 patients, with complete regression of pre-cancerous lesions documented in 6 out of 10
 patients at their first post-treatment evaluation, which occurred within 1-3 months of completing treatment. In addition, the fact that no disease recurrence occurred over the two-year evaluation period strongly suggested a robust and durable
 therapeutic immune response due to the induction of T cells by PDS0101 administration that were clinically active. As a result of this information and the documentation in the trial of PDS0101's ability to generate potent and biologically
 active CD8 T cells in-vivo, we focused our clinical strategy on areas of more severe unmet medical need in which PDS0101 is combined with other immune-modulating agents, including immune checkpoint
 inhibitors and standard of care e.g., chemoradiotherapy, to provide improved clinical benefit to patients.

 We believe that rational design of combination immunotherapies using complementary agents that promote synergy with each other and reduce the potential for compounded
 toxicity will substantially enhance the potential for combination therapies to deliver improved clinical benefit for cancer patients. Based on our data, Versamune appears to activate an appropriate combination of immunological pathways to
 promote strong CD8 T cell induction while also altering the tumor microenvironment to make tumors more susceptible to T cell attack, which we believe makes it an ideal complement to immune checkpoint inhibitors and other immune-modulating
 agents by enhancing their potency as part of combination therapies. In addition, the differences in mechanism of action between Versamune and checkpoint inhibitors, as well as the initial demonstrated safety profile of Versamune, suggests
 that these combinations may be potentially much better tolerated by patients than other combination therapies involving immune checkpoint inhibitors and other cancer treatments such as immune-cytokines and chemotherapy.

 Clinical Candidate Pipeline

 National Cancer Institute: Versamune PDS0101+ PDS01ADC (formerly known as PDS0301/M9241/NHS-IL-12) +Bintrafusp Alfa

 In June 2020, the first patient was dosed under a Cooperative Research and Development Agreement (CRADA), in the NCI led Phase 2 investigator-initiated trial evaluating our product candidates
 PDS0101 and PDS01ADC in combination with M7824 (Bintrafusp alfa), a bi-functional immune checkpoint inhibitor (ICI) which is owned by EMD Serono (Merck KGaA) in patients with advanced HPV-positive cancers who have failed prior treatment. In
 February 2021, the NCI's Phase 2 clinical trial of PDS0101 for the treatment of advanced HPV-positive cancers had achieved its preliminary objective response target in patients na ve to check point inhibitors which allowed for full enrollment of
 approximately 20 patients in this group. In addition, based on promising results in the ICI na ve arm, the trial was amended to allow enrollment of a separate cohort of IC -resistant patients for assessment of safety and activity of the triple
 combination. The trial has been closed for enrollment. Preliminary efficacy assessment of the triple combination in this added group of 29 ICI resistant patients has been completed and evaluation of long-term patient survival is ongoing.

 Preclinical study results arising from this CRADA were published in the Journal for ImmunoTherapy of Cancer, Immunomodulation to enhance the efficacy of an HPV
 therapeutic vaccine (Journal for ImmunoTherapy of Cancer2020;8:e000612. Doi:10.1136/ jitc-2020-000612), and indicate that PDS0101 generated both HPV-specific T cells and an associated antitumor response when used as a monotherapy. When PDS0101 was combined with the two other novel clinical-stage anti-cancer agents, Bintrafusp Alfa and M9241 (which
 is now owned by us and referred to as PDS01ADC), the preclinical data suggested that all three therapeutic agents worked synergistically to provide superior tumor T cell responses and subsequent tumor
 regression when compared to any of the agents alone or the 2-component combinations. The published preclinical data demonstrating powerful activity of the triple combination appears to be corroborated in
 the Phase 2 trial, and this triple combination could form the basis of a unique platform providing improved cancer treatments across multiple cancers.

 In June 2022, at the 2022 ASCO Annual Meeting, the NCI provided an update to the preliminary data presented at the 2021 meeting (Strauss J et al. J Clin Oncol 40, 2022 [suppl 16; abstr 2518]). This included data from 30 HPV16-positive patients and highlights were as follows:

 Objective response (OR = > 30% tumor reduction) was seen in 88% (7/8) of patients with ICI naive disease; 4/7 (57%) patients' responses were ongoing (median 17 months).

 With ICI resistant patients: PDS01ADC dosing appeared to affect response rates, with 5/8 (63%) patients receiving PDS01ADC at 16.8 mcg/kg achieving an OR compared to 1/14 (7%) patients who received PDS01ADC
 at 8 mcg/kg achieving an OR; 4/6 (67%) patients' responses were ongoing (median 12 months).

 Tumor reduction was seen in 45% (10/22) of patients with ICI resistant disease, including patients receiving high or low dose PDS01ADC.

 In ICI resistant patients treated with high or low dose PDS01ADC, survival outcomes were similar (p=0.96 by Kaplan Meier analysis). At a median of 12 months of follow up 17/22 (77%) of patients were alive.

 In ICI na ve patients 6/8 (75%) were alive at median 17 months of follow up.

 Similar OR and survival were seen across all types of HPV16-positive cancers.

 Preliminary safety data: 13/30 (43%) of patients experienced Grade 3 treatment-related adverse events (AEs), and 2/30 patients (7%) experienced Grade 4 AEs. There were no grade 5 treatment-related AEs.

 We believe the trial results to date strongly suggest, in agreement with the published preclinical studies, that all 3 drugs contribute to the clinical outcomes.

 In September 2022, we determined, in agreement with the NCI, to select the ICI resistant patients as the preferred treatment group in the on-going PDS0101-based triple
 combination therapy in advanced HPV-positive cancers and the trial was closed to further enrollment given the ICI resistant arm had been fully recruited.

 In October 2022, we presented additional interim data as follows:

 Survival data: 66% (19/29) of HPV16-positive ICI resistant patients in the cohort were alive at a median follow up of 16 months.

 Safety profile: 48% (24/50) patients experienced Grade 3 treatment-related adverse events (AEs), and 4% (2/50) patients experienced Grade 4 AEs. There were no Grade 5 treatment-related AEs.

 HPV16-positive ICI na ve patients: 75% (6/8) were alive at a median follow up of 25 months and 38% (3/8) of responders had a complete response.

 In December 2022, we presented interim data as follows:

 Median OS was 21 months in 29 checkpoint inhibitor resistant patients who received the triple combination. The reported historical median OS in patients with ICI resistant disease is 3-4 months seen with
 checkpoint inhibitors and best reported median survival to date with systemic therapy of 8.2 months in ICI resistant head and neck cancer.

 In ICI na ve subjects, 75% remained alive at a median follow-up of 27 months. As a result, median OS had not yet been reached. Historically, observed median OS for similar patients with platinum
 experienced ICI na ve disease is 7-11 months.

 Objective response rate (ORR) in ICI resistant patients who received the optimal dose of the triple combination is 63% (5/8). In current approaches ORR is reported to be less than 10%.

 ORR in ICI na ve patients with the triple combination was reported as 88%. In current approaches, ORR is reported to be less than 25% with FDA-approved ICIs in HPV-positive cancers.

 Safety data had not changed since October's update. 48% (24/50) of patients experienced Grade 3 (moderate) treatment-related adverse events (AEs), and 4% (2/50) patients experienced Grade 4 (severe) AEs,
 compared with approximately 70% of patients receiving the combination of ICIs and chemotherapy reporting Grade 3 and higher treatment-related AEs.

 In February 2023, we announced the successful completion of a Type B meeting with the FDA for the combination therapy of PDS0101, PDS01ADC, and an FDA-approved immune
 checkpoint inhibitor for the treatment of recurrent/metastatic HPV-positive ICI-resistant head and neck cancer. We confirmed the required contents of the trial design for a potential registrational trial of the combination.

 In November 2023, we released updated interim survival data as follows:

 75% of ICI na ve patients remain alive at 36 months; published median OS in similar patients is 7-11 months

 12-month survival rate in ICI resistant patients was 72%

 Median OS in ICI resistant HPV-positive patients is approximately 20 months; published median OS is 3.4 months

 VERSATILE-002: PDS0101 + Keytruda

 In November 2020, our VERSATILE-002 Phase 2 clinical trial evaluating the combination of PDS0101 in combination with Merck's anti-PD-1 therapy, Keytruda (pembrolizumab) which is the
 FDA-approved standard of care for first-line treatment of recurrent/ metastatic head and neck cancer commenced. Enrollment in stage 2 of 2 for the ICI na ve arm and the ICI resistant arms are complete. The clinical trial was designed to
 evaluate the efficacy and safety of this therapeutic combination as a first and second line treatment in patients with recurrent or metastatic head and neck cancer and high-risk human papillomavirus-16 (HPV16) infection.

 In this PDS Biotech-sponsored trial patients whose cancer had returned following initial treatment or spread were treated with the combination of PDS0101 and Keytruda
 to evaluate if the addition of PDS0101 might improve the efficacy reported in published studies of Keytruda alone. Patients in the trial received a total of 5 cycles of combination therapy in the
 context of standard of care Keytruda therapy which was administered every three weeks until disease progression. The primary endpoint of VERSATILE-002 is the objective response rate (ORR) at six months
 following initiation of treatment. There are two cohorts in the trial. Cohort 1 is for patients who have yet to be treated with an immune checkpoint inhibitor (ICI na ve) and cohort 2 which consists of
 patients who have failed immune checkpoint inhibitor therapy (ICI resistant).

 In February 2022, we achieved the preliminary efficacy milestone of at least four or more objective responses among the first 17 patients in the ICI na ve arm, allowing that arm to proceed to
 full enrollment. We also announced detailed preliminary safety data which showed that the combination was well tolerated without evidence of enhanced or significant toxicity in the first 18 patients in the ICI na ve arm. We also completed enrollment in Stage 1 of the ICI resistant arm and were awaiting sufficient follow-up to conduct the futility analysis.

 In May 2022, we expanded this trial into Europe and in June 2022, we received Fast Track designation from the U.S. FDA for PDS0101 in combination with pembrolizumab.

 In June 2022, we presented additional preliminary efficacy and safety data from this trial at the ASCO Annual Meeting (Weiss J et al. J Clin Oncol 40, 2022
 (suppl 16; abstr 6041)). The abstract provided preliminary data on 19 patients (safety) with available imaging data for 17 of the 19 patients (efficacy). Data on 17 patients was presented. Highlights from the abstract were as follows:

 Confirmed and unconfirmed objective response rates (ORR) thus far (tumor shrinkage greater than 30%) was seen in 7/17 (41.2%) patients with 2 of the 7 having complete responses (CR). Published results state ORR of approximately 19% for
 approved ICIs, used as monotherapy for recurrent or metastatic head and neck cancer.

 Stable disease (SD) was reported in 6/17 (35.3%) patients, with 4 of the 6 (67%) experiencing tumor shrinkage of less than 30%

 Clinical efficacy (ORR + SD) was seen in 13/17 (76.5%) patients

 Progressive/ongoing disease was reported in 4/17 (23.5%) patients

 Patients had received a median of 4/5 doses of PDS0101 (range 1-5) and 9/35 doses of Keytruda (range 1-18)

 There were no treatment-related adverse events greater than or equal to Grade 3 (N=19)

 No patients required dose interruption or reduction on the combination treatment

 No patients discontinued the combination treatment

 At 9 months of follow up (median not yet achieved):

 Progression free survival (PFS) rate was 55.2%

 Overall survival (OS) rate was 87.2%

 No control or comparative studies have been conducted between ICIs and PDS0101

 In August 2022, our independent Data Monitoring Committee (DMC) met and evaluated data from 43 patients and noted there were no Grade 3 or greater treatment-related adverse events attributed to
 the combination. The DMC recommended continuing the trial with no modifications.

 In October 2022, we announced the results of an end-of-phase 2 meeting with the FDA for PDS0101 in combination with Keytruda. We have completed the plan for the Phase 3 clinical program that
 will support the submission of a BLA for PDS0101 and have submitted it to the FDA.

 In December 2022, we completed the first stage of enrollment in the ICI resistant arm. Cohort follow-up is in progress that will permit a futility analysis to determine
 progression to stage 2 enrollment is in progress.

 In May 2023, we completed enrollment in the ICI na ve arm. We filed our amended Investigational New Drug (IND) application with the FDA in the third quarter of 2023. In
 October 2023, we received feedback from the FDA on the amended IND. Later in October, as part of business development discussions, we received insights from potential business partners on the Phase 3 clinical protocol.

 In June 2023, an abstract was presented at the 2023 American Society of Clinical Oncology: Abstract number 6012, Safety and Efficacy of Immune
 Checkpoint Inhibitor (ICI) Na ve Cohort from Study of PDS0101 and Pembrolizumab in HPV16-Positive Head and Neck Squamous Cell Carcinoma (HNSCC). The abstract was also selected as one of the featured posters to be reviewed by an expert panel in
 the Head and Neck Cancer discussion session. Data on 34 patients was presented. The data from the abstract is as follows:

 Estimated 12-month overall survival rate was 87.1%. Published results are 36-50% with approved ICIs used alone.

 Median progression-free survival was 10.4 months (95% CI 4.2, 15.3). Published results are median PFS of 2-3 months for approved ICIs when used as monotherapy in patients with similar PD-L1 levels.

 A disease control rate (disease stabilization or tumor shrinkage) of 70.6% (24/34)

 Confirmed and unconfirmed objective response rate is 41.2% (14/34 patients), which is identical to the preliminary response rate data PDS Biotech previously reported at ASCO 2022 (7/17 patients). To date, these responses have been
 confirmed in 9 of the 34 patients (26.5%), including one complete response.

 15/34 patients (44.1%) had stable disease.

 9/34 patients (26.5%) had progressive disease.

 4/48 (8.3%) of patients had a Grade 3 treatment-related adverse event (TRAE). No Grade 4 or higher TRAEs were observed.

 In October 2023, at a key opinion roundtable updated interim data was presented based on an August 2, 2023 cut off from our VERSATILE-002 Phase 2 clinical trial evaluating PDS0101 in combination with Merck's
 anti-PD-1 therapy, Keytruda (pembrolizumab) which is an FDA-approved standard of care for first-line treatment of recurrent/ metastatic head and neck cancer. Data on 52 patients was presented. The data from the roundtable based on investigator
 assessment was as follows:

 Highlights from the ICI na ve cohort include:

 24-month overall survival rate is 74%; published 24-month survival rate of less than 30% for approved ICI.

 12-month OS rate is 80%; published results of 30-50% with approved ICIs.

 Tumor shrinkage seen in 60% (31/52) of patients.

 Confirmed overall response rate is 27% (14/52) to date.

 Median progression-free survival is 8.1 months to date; published results of 2-3 months PFS with approved ICIs.

 13% (8/62) of patients experienced Grade 3 treatment-related adverse events (TRAE) and 0% (0/62) experienced Grade 4 or 5 TRAE; published results report 13-17% Grade 3-5 TRAE with approved ICI monotherapy.

 60% (33/55) of patients have CPS score of 1-19 (who generally have a weaker response to Keytruda), and 40% (22/55) have CPS score >20 (who generally have a higher response to Keytruda).

 Highlights form the ICI refractory cohort include:

 The 12-month OS rate is 56%. The published median 12-month OS rate is 17% with no salvage chemotherapy following tumor progression on ICI (ICI Resistant).

 0% (0/21) confirmed ORR suggests that PDS0101's impact on survival does not appear to be dependent on tumor shrinkage.

 4% (1/25) of patients experienced Grade 3 TRAE and 0% (0/21) patients experienced Grade 4 and 5 TRAE.

 MD Anderson Cancer Center (IMMUNOCERV): PDS0101+ Chemoradiotherapy

 In October 2020, a PDS0101 Phase 2 IIT was initiated with The University of Texas MD Anderson Cancer Center and is actively recruiting patients. This clinical trial is investigating the safety
 and anti-tumor efficacy of PDS0101 in combination with standard-of-care chemo-radiotherapy, or CRT, and their correlation with critical immunological biomarkers in patients with locally advanced cervical cancer. We believe that Versamune has
 strong T cell induction with the potential to enhance efficacy of the current standard of care CRT treatment in this indication.

 In November 2022, data from this trial was included in a poster presentation at the 2022 SITC Annual Meeting which included the following:

 9 of the 17 patients had completed a Day 170 post-treatment Positron Emission Tomography, Computed Tomography (PET CT) scan to assess the status of the cancer. This included 78% (7/9) of treated patients
 with advanced cervical cancer (FIGO stage III or IV).

 100% (9/9) of patients treated with the combination of PDS0101 and CRT had an objective response.

 89% (8/9) of patients treated with the combination of PDS0101 and CRT demonstrated a complete response (CR) on Day 170 by PET CT. One patient who received 3 of the 5 scheduled doses of PDS0101 showed signs
 of residual disease. One patient who had a CR died from an event unrelated to either their underlying disease or treatment.

 1-year disease-free survival and 1-year overall survival of 89% (8/9) in patients treated with the combination of PDS0101 and CRT.

 As previously reported, data confirm PDS0101 treatment activates HPV16-specific CD8 T cells. This increase was not seen in patients who did not receive PDS0101. The increase in HPV16-specific T cells
 generated by the treatment is positively correlated with tumor cell death, suggesting cytotoxic CD8 T cells are important mediators of antigen-specific immunity.

 Toxicity of PDS0101 remains limited to low-grade local injection site reactions.

 In October 2023, data demonstrated that PDS0101 in combination with standard-of-care (SOC) chemoradiotherapy was associated with a rapid decline in human papillomavirus circulating cell-free DNA
 (ctHPV-DNA), a potential predictive biomarker of treatment response. The data from the IMMUNOCERV Phase 2 clinical trial was featured in an oral presentation at the American Society for Radiation Oncology Annual Meeting which included the
 following:

 Earlier and greater proportion of ctDNA clearance with PDS0101 plus chemoradiation (CRT) vs. SOC CRT alone (81.3% clearance after 3 weeks vs. 30.3% with SOC (p=0.0018), and 91.7% of clearance at 5 weeks vs. 53.1% with SOC (p=0.0179).

 Baseline ctDNA levels correlated with the International Federation of Gynecology and Obstetrics (FIGO) stage and lymph node involvement; 100% of patients treated with PDS0101 had cancer that had spread to the lymph nodes.

 Mayo Clinic: PDS0101 Monotherapy and in combination with Keytruda

 In February 2022, we initiated an Investigator-Initiated Trial (ITT), MC200710, for PDS0101 alone or in combination with the immune checkpoint inhibitor, Keytruda, in patients with HPV-positive oropharyngeal cancer (HPV(+)OPSCC) at high risk of recurrence. The trial is being led by Drs. David Routman, Katharine Price, Kathryn Van Abel, and Ashish Chintakuntlawar at Mayo
 Clinic, a nationally and internationally recognized center of excellence for the treatment of head and neck cancers. We believe that this trial not only broadens our addressable patient population of those affected by the increasing incidence
 of HPV(+)OPSCC, but also allows us to better understand the activity of PDS0101 alone or in combination with Keytruda in earlier stages of disease. This trial is currently open for enrollment.

 In this trial, treatment will be administered before patients proceed to transoral robotic surgery (TORS) with curative intent. Treatment in this setting is referred to as
 neoadjuvant treatment. PDS0101 has been shown to induce killer T cells that target and kill HPV-positive cancers, either alone or in combination with ICIs in preclinical studies, and in combination in clinical studies of patients with advanced
 recurrent/metastatic HPV-positive cancers. This trial will explore whether PDS0101 with or without checkpoint inhibition may increase HPV-specific anti-tumor responses, potentially resulting in tumor shrinkage, pathologic regression, and
 decreases in circulating tumor DNA (ctDNA).

 PDS0102

 PDS0102 is an investigational immunotherapy utilizing tumor-associated and immunologically active T cell receptor gamma alternate reading framed protein (TARP) from the NCI.
 PDS0102 is designed to treat TARP-associated cancers, including acute myeloid leukemia (AML), prostate and breast cancer. In our preclinical work, in the administration of PDS0102, the Versamune +TARP antigen combination led to the induction of
 large numbers of tumor targeted killer T cells. In addition, the TARP tumor antigen alone has already been studied at the NCI in men with prostate cancer and been shown to be safe, immunogenic with slowing tumor growth rates (NCT00972309).

 PDS0103

 In April 2020, the above mentioned CRADA between PDS Biotech and the NCI was expanded beyond PDS0101 to include clinical and preclinical development of PDS0103. PDS0103 is an investigational
 immune therapy owned by us and designed to treat cancers associated with the mucin-1, or MUC1, oncogenic protein. These include cancers such as ovarian, breast, colorectal and lung cancers. PDS0103 combines Versamune with novel highly
 immunogenic agonist epitopes of MUC1 developed by the NCI and licensed by us. PDS0103 is currently in the tech transfer and clinical scale up and manufacturing stage.

 MUC1 is highly expressed in several types of cancer and has been shown to be associated with drug resistance and poor disease prognosis in breast, colorectal, lung and ovarian cancers, for which
 PDS0103 is being developed. Expression of MUC1 is often associated with poor disease prognosis, due in part to drug resistance. In preclinical studies, and similarly to PDS0101, PDS0103 demonstrated the ability to generate powerful MUC1-specific
 CD8 killer T cells. In the first quarter of 2022, we held a pre-IND meeting with the FDA on PDS0103, and we are prepared to submit our IND package by the second half of 2024.

 IL-12 Oncology Immunocytokine Pipeline

 PDS01ADC has been designed to overcome the limitations of cytokine therapy as explained above, and based on extensive preclinical studies performed at the NCI evaluating PDS01ADC as a
 monotherapy and also in combinations with established standard of care treatments for cancer, we believe that PDS01ADC has significant potential as a cytokine therapy independent of Versamune. Based on the informative preclinical studies, a
 number of ITT Phase 2 trials are currently in progress at the NCI, some of which are outlined below:

 Phase 2 Study Evaluating ICI Na ve and Resistant Patients with HPV-positive malignancies treated with PDS01ADC, PDS0101 and bintrafusp alfa.

 A Phase 2 Study Evaluating T-Cell Clonality After Stereotactic Body Radiation Therapy Alone and in Combination with the Immunocytokine PDS01ADC in Localized High and Intermediate Risk Prostate Cancer Treated with Androgen Deprivation
 Therapy

 A Phase 1/2 Study of PDS01ADC in Combination with Docetaxel in Adults with Metastatic Castration Sensitive and Castration Resistant Prostate Cancer

 Phase 1/2 of PDS01ADC going forward as a Monotherapy in Advanced Kaposi Sarcoma

 Phase 1/2 of PDS01ADC in Combination of with a Histone Deacetylase (HDAC) Inhibitor in ICI resistant MUC1-positive colon and bladder cancers among others

 In October 2023, interim safety and immune response data was presented for the first-in-human Phase 1/2 clinical trial evaluating PDS01ADC in combination with current SOC chemotherapy,
 docetaxel, to treat metastatic castration sensitive and castration resistant prostate cancer. The data was featured in an oral presentation at the 11 th Annual
 Meeting of the International Cytokine & Interferon Society. Data presented as follows:

 Decrease in PSA levels was seen in all patients at all three tested doses of PDS01ADC, and 61% of patients had at least a 60% decrease in PSA levels.

 All doses of the combination were well-tolerated with one patient experiencing Grade 4 neutropenia.

 Administration of the combination was associated with decreases in T reg cells and increases in activated natural killer (NK) cells, memory CD8 T cells, proliferating CD4 and CD8 T cells and cytokines INF- and Interleukin 10
 (IL-10).

 The changes in immune responses with the combination were independent of the PDS01ADC dose.

 We are working closely with the NCI to determine the best pathway forward for the prioritized PDS01ADC studies, as well as evaluating the use of PDS01ADC in combination with other Versamune
 based clinical candidates.

 Infectimune Development Strategy

 We believe that the key differentiating attributes of the Infectimune platform technology are strong induction of CD8 and CD4 T cells as well as antibodies which can be leveraged to improve
 treatment and preventive options in several infectious disease indications.

 In January 2022, we presented preclinical data on our universal flu program sponsored by the National Institute of Allergy and Infectious Disease (NIAID) demonstrating the potential of the
 Infectimune technology with computationally designed influenza proteins developed by the laboratory of Dr. Ted Ross at the University of Georgia to generate broadly protective anti-influenza immune responses across multiple strains of influenza
 in animals. This data has provided a unique opportunity to highlight Infectimune 's potentially transformative utility in the development of more broadly effective and longer lasting protective vaccines. Current preventive and prophylactic
 vaccine approaches and technologies predominantly focus on creating strong induction of antibody responses. However, the induction of T cell responses, in addition to antibody responses, provides more durable and broad protection against
 infectious diseases.

 Based on the data with the universal seasonal flu vaccine in animals and the current focus of the NIAID in developing more effective flu vaccines, we have decided to focus our near-term
 infectious disease activities to align with the interests of the NIAID Collaborative Influenza Vaccine Innovation Centers (CIVICs) program. This will involve development of a universal seasonal flu vaccine and the potential development of a
 universal pandemic influenza vaccine, which is based on similar computationally designed antigens that have shown promise with Infectimune.

 In July 2022, universal flu vaccine preclinical data for PDS0202 at the 41 st American Society of Virology meeting:
 Abstract number 3733830, Infectimune enhances antibodies elicited by COBRA hemagglutinin influenza vaccine. We are evaluating the next steps in the clinical development and funding for PDS0202.

 The results for Infectimune based vaccines were published in two separate articles in the peer reviewed journal Viruses in February
 2023: 1. preclinical studies demonstrating complete protection against sickness after lethal challenge with live SARS-CoV-2 or influenza viruses (Gandhapudi SK et al. Viruses 2023, 15, 432) and 2. Dramatically enhanced CD4 T cell responses to recombinant influenza proteins compared to leading commercial vaccine adjuvants (Henson TR et al. Viruses
 2023, 15, 538).

 In September 2023, data on our investigational universal flu vaccine, PDS0202, were presented at the 9 th European
 Scientific Working Group on Influenza (ESWI) conference. These data demonstrated active neutralization across multiple influenza viruses in animals and provided protection against infection and weight loss after challenging with high doses of
 H1N1 viruses not previously exposed to flu.

 PDS0202; Universal Flu

 Based on the key characteristics of Infectimune, we are progressing development of PDS0202, a universal influenza vaccine candidate, which combines Infectimune with novel
 Computationally Optimized Broadly Reactive (COBRA) influenza vaccine antigens designed by renowned influenza expert Dr. Ted Ross and licensed from the University of Georgia. PDS0202 preclinical development was supported by an agreement with
 the NIAID CIVICs, program, with a goal of progressing into a human clinical trial with nondilutive financing. Preclinical development studies were performed at three sites: our Princeton, NJ laboratories, The University of Kentucky School of
 Medicine, and the CIVICs Center for Influenza Vaccine Research for High-Risk Populations. The data produced in the preclinical studies showed significant levels of hemagglutinin inhibition (HAI) titer levels when utilizing PDS0202 as compared
 to COBRA antigens alone ranging from 28x to 62x on various strains of the H1N1 influenza virus.

 The preclinical data also showed all animals in the control group, when challenged by the flu virus became sick and died while all animals treated with either a 3mcg (high dose) or.012mcg (low dose) of PDS0102
 remained alive and healthy.

 Clinical Development Strategy

 Since our inception we have devoted substantially all our resources to developing our Versamune and Infectimune platforms, and products derived thereof, as well as
 PDS01ADC, advancing preclinical programs, conducting clinical trials, manufacturing PDS0101 and PDS01ADC for clinical trials, and providing general and administrative support. We have funded our operations primarily from the issuance of common
 stock. We have not generated any product revenue to date. We have never been profitable and have incurred net losses in each year since our inception.

 Our future funding requirements will depend on many factors, including the following:

 the timing and costs of our planned clinical trials and manufacturing of our clinical products;

 the timing and costs of our planned preclinical studies of our lead program of Versamune PDS0101 in combination with PDS01ADC and an immune checkpoint inhibitor, as well as other earlier-stage programs;

 the outcome, timing and costs of seeking regulatory approvals;

 the ability to repay debt financings including interest payments;

 the terms and timing of any future collaborations, licensing, consulting or other arrangements that we may enter into;

 the amount and timing of any payments we may be required to make in connection with the licensing, filing, prosecution, maintenance, defense and enforcement of any patents or patent applications or other
 intellectual property rights; and

 the extent to which we license or acquire other products and technologies.

 Development Pipeline

 Our current program development pipeline is shown below:

 Leadership

 We are led by a team of executives and directors with significant experience in drug discovery, development and commercialization. The following table
 sets forth certain information about our executive officers as of the date of the filing of this Annual Report:

 Name

 Age

 Position

 Frank Bedu-Addo, Ph. D.

 President, Chief Executive Officer, Principal Executive Officer and Director

 Gregory L. Conn, Ph. D.

 Chief Scientific Officer

 Kirk V. Shepard, M.D.

 Chief Medical Officer

 Lars Boesgaard

 Chief Financial Officer, Principal Financial Officer and Principal Accounting Officer

 Spencer Brown

 Senior Vice President, General Counsel, Chief Compliance Officer

 Frank Bedu-Addo, Ph. D.

 Dr. Bedu-Addo has served as director, President and Chief Executive Officer of PDS Biotech since March 2019. Dr. Bedu-Addo is a veteran biotech executive with experience
 successfully starting and growing biotechnology organizations. He has been responsible for the oversight, development and implementation of both operational and drug development strategies in both large organizations and emerging biotechnology
 companies. Dr. Bedu-Addo was a member of the senior executive team at KBI BioPharma, Inc. As Vice President of Drug Development, he oversaw all operations including business development, drug development/manufacturing and profit and loss.
 Before his tenure at KBI, he successfully started and managed Cardinal Health's East Coast biotechnology drug development and manufacturing operations. Prior to Cardinal Health, Dr. Bedu-Addo was an Associate Director at Akzo-Nobel, Senior
 Scientist at Elan (The Liposome Co.), and Principal Scientist at Schering-Plough. In these positions, he contributed to the development of numerous drugs, including antiviral and anticancer products. Dr. Bedu-Addo obtained both his M.S. in
 Chemical Engineering and Ph. D. in Pharmaceutics from the University of Pittsburgh.

 Gregory L. Conn, Ph. D.

 Dr. Conn was a founding member of the PDS Biotech team in 2005 as Chief Scientific Officer and continues to serve PDS Biotech in that role. He has more than 35 years of
 drug-development expertise, including development of antiviral and anticancer drugs through to commercialization. He is a graduate of the Albert Einstein College of Medicine, where he obtained both his M.S. and Ph. D., discovering novel
 angiogenic molecules in the human brain. Dr. Conn started his pharmaceutical career at Merck, Sharpe, and Dohme, where he continued his work on novel angiogenic factors, discovering and characterizing the VEGF family of growth factors, work
 which led to the development and commercialization of the anti-cancer drug Avastin. He was later a leading scientist at Regeneron Pharmaceuticals, where he established and headed various groups in the Cell and Molecular Biology and Drug
 Discovery departments. Dr. Conn subsequently became a Director in the Process Development department at Covance Biotechnology Services Inc., a contract research and development and drug manufacturing organization, where he supervised the
 analytical development teams responsible for drug characterization, method development and drug stability studies, and program teams responsible for developing drug manufacturing processes. Dr. Conn has expertise across all phases of the drug
 development process, including FDA and regulatory requirements, and is the co-inventor of eight drug patents.

 Kirk V. Shepard, M.D.

 Dr. Shephard has served as Chief Medical Officer of PDS Biotech since January 2024. Dr. Shepard is a board-certified medical oncologist and hematologist with more than 30
 years of experience in the pharmaceutical industry. His experience spans multiple therapeutic areas and includes operational and strategic product development from Phases 1 through 4 and diverse disciplines of medical affairs and product
 commercialization. Prior to joining PDS Biotech, Dr. Shepard was Chief Medical Officer, Senior Vice President and Head of the Global Medical Affairs Oncology Business Group at Eisai Pharmaceutical Company from March 2017 to August 2023. Dr.
 Shepard previously held leadership roles including Senior Vice President & Head, Global Medical Affairs at Baxter International Inc., Senior Vice President, Global Medical Affairs at Takeda Pharmaceuticals International and Vice President,
 Clinical and Scientific Affairs at Boehringer Ingelheim Pharmaceuticals, Inc. Before his pharmaceutical industry career, Dr. Shepard served as a staff physician in the Department of Hematology and Medical Oncology at the Cleveland Clinic
 Foundation, where he supervised numerous studies in oncology and symptom control. He has been published in more than 50 medical publications. Dr. Shepard holds a bachelor's degree from Cornell University and earned his medical degree from the
 University of Cincinnati Medical School. He completed his internship and internal medicine residency at Case Western Reserve University and fellowships in hematology and oncology at the University of Chicago Hospitals and Clinics.

 Lars Boesgaard

 Mr. Boesgaard has served as our Chief Financial Officer since December 2023. Mr. Boesgaard has had a career spanning more than 25 years in healthcare and has deep capital
 markets and investor relations experience with global clinical and commercial-stage pharmaceutical and biotechnology companies. He has prepared and executed corporate transactions and built financial frameworks for rapidly growing
 organizations. Mr. Boesgaard served as CFO of AM-Pharma B.V. from September 2021 to August 2023. Mr. Boesgaard also served as CFO of Columbia Care from August 2018 to August 2021, where he completed key transactions including an IPO/reverse
 merger resulting in a $120 million capital infusion and raising $200 million in public equity and debt offerings. Mr. Boesgaard was also previously the Vice President, CFO of Roka Bioscience from November 2015 to July 2018 and held several
 other senior finance positions with publicly traded companies including Insulet Corporation, Alexion Pharmaceuticals and Novo Nordisk A/S. Mr. Boesgaard holds a Bachelor of Science in Business Administration from the Copenhagen Business School
 and a Master of Business Administration from the Richard Ivey School of Business, Western University, Ontario, Canada.

 Spencer Brown

 Mr. Brown has served as Senior Vice President, General Counsel of PDS Biotech since June 2022. He was appointed as Compliance Officer in October 2023. Mr. Brown previously
 served as Vice President, Legal Affairs from January 2018 to January 2022 and as Senior Vice President, Legal Affairs and Compliance Officer from January 2022 to May 2022, for Aclaris Therapeutics, Inc. (Nasdaq: ACRS). Prior to joining Aclaris
 Therapeutics, Inc., Mr. Brown worked nearly eight years at GE Healthcare as Senior Commercial Counsel for the Life Sciences Core Imaging business in Princeton, New Jersey. Prior to that, Mr. Brown spent almost ten years at AstraZeneca
 Pharmaceuticals in Wilmington, Delaware where he provided legal support for most of the company's therapeutic areas at some point during his tenure. Mr. Brown has over two decades of in-house experience in the pharmaceutical industry. Mr. Brown
 began his legal career as an associate at Skadden, Arps, Slate, Meagher & Flom. Mr. Brown earned his bachelor's degree at Princeton University and obtained his juris doctorate degree from the University of Pennsylvania Carey School of Law.

 We are also supported by scientific leaders in the field of vaccine development and oncology. Dr. Lisa Rohan, one of our founders, is Chair of the Scientific
 Advisory Board. She is a professor in the department of Pharmaceutical Sciences at the University of Pittsburgh where she also holds appointments in the Department of Obstetrics, Gynecology and Reproductive Sciences in the School of Medicine
 and the Clinical Translational Science Institute. Dr. Mark Einstein, Professor and Chair in the Department of OB/ GYN & Women's Heath at Rutgers University Medical School is an expert in HPV-related pathogenesis, therapy and prevention of
 lower anogenital tract and gynecologic cancers. He is an active leader for management guidelines and translating clinical study and translational data for the World Health Organization, American Cancer Society, Society of Gynecologic Oncology
 and the American College of Obstetrics and Gynecology. Dr. Neil D. Gross, Professor and Director of Clinical Research, Department of Head and Neck Surgery, Division of Surgery, The University of
 Texas MD Anderson Cancer Center. Dr. Jon Wigginton, President, Research and Development Bright Peak Therapeutics and former President of Society for Immunotherapy of Cancer. Dr. Olivera Finn is a Distinguished Professor of Immunology at the
 University of Pittsburgh School of Medicine and she discovered the MUC1 antigen. Our Principal Investigator for the PDS0101 Head and Neck Trial with Keytruda for first-line treatment of recurrent/
 metastatic Head and Neck Cancer is Dr. Jared Weiss, Associate Professor of Medicine, University of North Carolina Lineberger Comprehensive Cancer Center, who is an expert in head and neck thoracic oncology with a focus on immunotherapeutic
 approaches for these diseases.

 Facilities & Manufacturing and Commercial Scale Up

 Product candidates using our Versamune, Versamune in combination with PDS01ADC and Infectimune development platforms are manufactured using a readily scalable,
 fill-finish process with well-defined and reproducible operations. We do not own or operate cGMP compliant manufacturing facilities to produce any of our product candidates and we do not have plans to develop our own manufacturing operations in
 the foreseeable future. We currently rely on third-party contract manufacturing organizations to produce the amounts of our product candidates necessary for our preclinical research and clinical studies. As part of the manufacture and design
 process for our product candidates, we rely on internal, scientific and manufacturing know-how and trade secrets and the know-how and trade secrets of third-party manufacturers. We currently employ internal resources to manage our manufacturing
 contractors.

 Our research and development activities are located at the Princeton Innovation Center BioLabs, 303A College Road East, Princeton, NJ 08540, which provides first-rate
 development facilities for biotech companies. All animal toxicology and efficacy testing are done via third-party contracts and collaborations to provide maximum flexibility and to minimize operational costs and overhead. This approach allows
 for independent validation of our data, and we believe it has historically been a cost-efficient way to progress our development programs.

 We do not intend to incur the costs of building, staffing and maintaining manufacturing facilities in the near term. Our management team has formulation, manufacturing and
 operations expertise, including past senior executive management roles in contract drug development and manufacturing. Our management team plans to utilize its expertise and knowledge to identify suitable alternative contract manufacturers who
 will be capable of efficiently manufacturing our products.

 For our Versamune PDS0101 and PDS01ADC product candidate, we continue to progress our ongoing Phase 2 clinical trials. This process is described further under "U.S.
 Product Development Process." The final protocols for all Phase 2 clinical trials were submitted to the FDA prior to trial initiation and information for all three trials are on www.clinicaltrials.gov. To conform to the FDA electronic Common
 Technical Document format requirement and submission of the cGMP material that will be used in the Phase 2 trials for PDS0101, we submitted a Chemistry, Manufacturing, and Controls amendment to our IND application, related to our Phase 2
 studies with PDS0101 to the FDA in 2020.

 We anticipate that we would seek marketing authorization from the FDA for our product candidates through the Biologics License Application pathway, under Section 351(a) of
 the Public Health Service Act. This process and the requirements are described further under "U.S. Product Development Process."

 For our earlier stage, preclinical product candidate PDS0103, we plan to work to develop data with the goal of progressing to an IND submission in 2024 and progressing
 clinical development to first-in-human trials with these products. We have engaged with the FDA and received useful initial feedback on the clinical trial design for the PDS0103 program and this information will influence our strategy for
 regulatory submissions and the protocol development.

 Intellectual Property

 Patents

 We seek to maintain high barriers to entry around our product our product candidates and the markets in which they are utilized by using a multiple layered approach to our
 patents, patent applications, substantial know-how and trade secrets related to our platforms. We strive to protect and enhance our proprietary technology, inventions and improvements that are commercially important to our business, including
 seeking, maintaining, and defending patent rights. We also rely on trade secrets relating to our platforms and on know-how, continuing technological innovation to develop, strengthen and maintain its proprietary position in the vaccine field.
 In addition, we rely on regulatory protection afforded through data exclusivity, market exclusivity and patent term extensions where available. We also utilize trademark protection for our company name and we expect to do so for products and/or
 services as they are marketed.

 We have developed numerous patents and patent applications and own substantial know-how and trade secrets related to our Versamune platform. As of March 1, 2024, PDS Biotech
 holds thirteen (13) U.S. patents with granted claims directed to its platform technology and twenty-four (24) pending U.S. patent applications. These issued patents will expire in 2026 to 2037. Should the more recently submitted patent
 applications currently in prosecution be issued, these will expire in 2033 through 2043 assuming no patent term extensions are granted. As of March 1, 2024, PDS Biotech holds seventy-four (74) issued foreign patents and forty-four (44) pending or
 published foreign patent applications. Most of our international issued patents are issued in multiple countries including Europe, Japan and Australia, and all of which cover compositions of matter and methods of use related to its platform
 technology. These issued patents will expire in 2028 through 2037, or later if patent term extension applies. Included in the patents above is a patent protecting the use of Versamune in combination with IL-12.

 Licensed Patents

 We have licensed patented antigens from the US government for use worldwide in our cationic lipid immunotherapies. We have licensed T cell receptor gamma alternate reading
 frame protein ("TARP") from the National Cancer Institute ("NCI") to develop and commercialize TARP peptide-based therapies in combination with our Versamune technology and any other of our proprietary technologies for prostate and breast
 cancers and Acute Myeloid Leukemia. These patents are directed to immunogenic peptides and peptide derivatives for the treatment of prostate and breast cancer treatment and multi-epitope TARP peptide vaccines and uses thereof. These antigens
 are incorporated in PDS0102 with Versamune. We have licensed novel and highly immunogenic agonist epitopes of mucin-1 ("MUC1") developed by the National Cancer Institute. MUC1 is highly expressed in multiple solid tumors and has been shown to
 be associated with drug resistance and poor disease prognosis in breast, colorectal, lung and ovarian cancers, for which PDS0103 is being developed. We have granted patents and are pursuing additional patents that cover compositions and
 methods of use of cationic lipid immunotherapies with each of the licensed technologies.

 We entered into a non-exclusive agreement to license COBRA universal influenza antigens with the University of Georgia Research Foundation to develop, manufacture and use
 COBRA antigens in a clinical trial for a universal influenza vaccine worldwide. These antigens are developed by Dr. Ted Ross at the University of Georgia. We believe that the combination of these antigens with our proprietary Infectimune
 technology, represented by PDS0202, has the potential to induce a broad immune response as a universal flu vaccine, based on preclinical development studies performed to date.

 Exclusive License Agreements

 On December 30, 2022, we entered into a License Agreement (the "Merck KGaA License"), with Merck KGaA, Darmstadt, Germany, pursuant to which Merck KGaA, Darmstadt, Germany
 granted us an exclusive (even as to Merck KGaA), worldwide, sublicensable, milestone and royalty-bearing right and license to certain patent rights and certain related data (the "Licensed Technology") to develop, manufacture, use, commercialize
 and otherwise exploit any product containing NHS-IL12 fusion protein formerly known as M9241, now PDS01ADC (the "Compound"). Merck KGaA, Darmstadt, Germany retains the right under the Licensed Technology in connection with certain existing
 collaborations between Merck KGaA, Darmstadt, Germany and academic institutions to allow such academic institutions to exercise their rights granted under such collaborations. We agreed to use commercially reasonable efforts to develop,
 manufacture and commercialize at least one pharmaceutical preparation, substance, or formulation, comprising or employing, the Compound (the "Product").

 In consideration for the rights granted by Merck KGaA, Darmstadt, Germany, we (i) made a one-time up-front cash payment of $5.0 million to Merck KGaA, Darmstadt, Germany,
 and (ii) entered into a Share Transfer Agreement dated December 30, 2022 (the "Share Transfer Agreement"), pursuant to which we issued 378,787 shares of our common stock (the "Shares") to Merck KGaA, Darmstadt, Germany in a private placement
 for an aggregate value of $5.0 million, as measured by the closing price of our common stock on the Nasdaq Capital Market as of December 30, 2022.

 Pursuant to the Merck KGaA License Agreement, we agreed to make (i) development and first commercial sale milestone payments totaling up to $11 million upon the achievement
 of certain milestones, including the dosing of the fifth patient in a Phase 3 trial of the Product and first commercial sale of the Product for a first and second indication in a major market, and (ii) up to $105 million upon achieving certain
 aggregate sales levels of the Product.

 We also agreed to pay Merck KGaA, Darmstadt, Germany a royalty of 10% on aggregate net sales of Product as specified in the Merck KGaA License Agreement on a
 Product-by-Product and country-by-country basis until the later of: (i) ten years after the first commercial sale of a Product in a given country; and (ii) the expiration or invalidation of the licensed patents covering the Compound or Product
 in such country (collectively, the "Royalty Term"). The royalty rate is subject to reduction in that event that (i) a Product is not covered by a valid patent claim, (ii) a biosimilar to the Compound or the Product comes on the market in a
 particular country, or (iii) we obtain a license to any intellectual property owned or controlled by a third-party in order to ensure that we are not infringing intellectual property owned or controlled by such third-party by making, using or
 selling the Compound.

 The Merck KGaA License Agreement will expire on a product-by-product and country-by-country basis upon expiration of the last-to-expire Royalty Term for such Product. On
 expiration (but not earlier termination), we will have a fully paid-up, royalty-free, non-exclusive, transferable, perpetual and irrevocable license under the licensed patent rights and related data to develop, manufacture, use, commercialize
 and otherwise exploit the Compound. Either party may terminate the Merck KGaA License Agreement for the other party's material breach following a cure period. The Merck KGaA License Agreement may not be terminated upon certain insolvency events
 relating to us. We may terminate the License Agreement for any reason upon ninety days written notice to Merck KGaA, Darmstadt, Germany. The Merck KGaA License Agreement also includes indemnification obligations of each party.

 Trade Secrets and Other Proprietary Information

 In contrast to patent protection or regulatory exclusivities, trade secret protection is a form of intellectual property that does not require disclosure of the
 subject information as part of the process, but instead depends on maintaining the subject information as strictly confidential. Companies may in some circumstances rely on trade secrets to protect certain aspects of their proprietary know-how
 and technological advances, especially where they do not believe patent protection is appropriate or obtainable. Trade secret protection depends in part on confidentiality agreements with employees, consultants, outside scientific
 collaborators, sponsored researchers and other advisors that prohibit disclosure of designated proprietary information. Trade secrets can be difficult to protect. Confidentiality agreements may not succeed in preventing a person or parties
 from disclosing confidential information, and in that event the rights of the trade secret holder are subject to the viability of an adequate remedy at law, typically under state law modeled on the Uniform Trade Secrets Protection Act, to stop,
 mitigate or compensate for the unauthorized disclosure of confidential information. Costly and time-consuming litigation could be necessary to enforce and determine the scope of the proprietary rights. Finally, there is always at least some
 risk that others may independently discover the trade secrets and proprietary information.

 Material License Agreements and Research and Development Agreements

 Patent License Agreements with National Institutes of Health.

 Effective January 5, 2015, we entered into a Patent License Agreement (the "Patent License Agreement") as Amended by the First Amendment to Patent License Agreement ("First
 Amendment") of August 5, 2015, with an agency within the Department of Health and Human Services ("HHS"), pursuant to which NIH granted PDS Biotech a nonexclusive license to certain patent rights for the development of a therapeutic cancer
 vaccine specifically in combination with PDS Biotech's proprietary Versamune technology for ovarian, breast, colon and lung cancers. The Patent License Agreement expires when the last licensed patent expires if the Patent License Agreement is
 not terminated prior to that date. NIH may terminate the Patent License Agreement if PDS Biotech is in default in the performance of any material obligation under the Patent License Agreement. PDS Biotech may unilaterally terminate the Patent
 License Agreement in any country or territory upon sixty (60) days written notice.

 Under the Patent License Agreement and First Amendment we agreed to pay NIH: (a) a non-creditable, non-refundable royalty in the amount of $30,000 upon execution of the
 Patent License Agreement; (b) a non-creditable, non-refundable royalty in the amount of $60,000 upon execution of the First Amendment to Patent License Agreement (c) a non-refundable minimum annual royalty of $5,000; (d) earned royalties of two
 percent (2%) on net sales, reducible by a half percent (0.5%) for any earned royalties PDS Biotech must pay to third parties; (e) benchmark royalties as follows: (i) $25,000 upon successful completion of each Phase 2 Clinical Studies of a
 licensed product for breast, colon, lung or ovarian cancer within each licensed territory; (ii) $50,000 upon initiation of the first Phase 3 Clinical Trial of a licensed product for breast, colon, lung or ovarian cancer within each licensed
 territory; (iii) $750,000 upon the first commercial sale in the licensed territory utilizing and/or directed to licensed product(s) and/or licensed process(es) within the licensed patent rights for breast, colon, lung or ovarian cancer; and (f)
 additional sublicensing royalties for each sublicense required to be approved by NIH of four percent (4%) on the fair market value of any consideration received for granting such sublicense.

 Effective as November 5, 2021, we entered into a Patent License Agreement (the "NCI Patent License Agreement") with the U.S. Department of Health and Human Services, as
 represented by NCI of NIH. Pursuant to the NCI Patent License Agreement, we obtained a nonexclusive, worldwide license to the patent rights for TARP to develop and commercialize TARP peptide-based therapies in combination with the Versamune
 technology and any other of our proprietary technologies for prostate and breast cancers and Acute Myeloid Leukemia. The NCI Patent License Agreement expires when the last licensed patent expires if the Patent License Agreement is not terminated
 prior to that date. NCI may terminate the Patent License Agreement if we are in default in the performance of any material obligation under the Patent License Agreement. We may unilaterally terminate the NCI Patent License Agreement in any
 country or territory upon sixty (60) days written notice. Under the NCI Patent License Agreement, we agreed to pay NCI certain non-creditable, nonrefundable license issue royalties, unreimbursed patent expenses for the licensed patent rights, a
 nonrefundable minimum annual royalty, earned royalties as a percentage of net sales and benchmark royalties.

 DOTAP Chloride Enantiomer License Agreement with Merck Eprova AG.

 Effective November 1, 2008, we entered into a DOTAP Chloride Enantiomer License (the "DOTAP License Agreement") with Merck Eprova AG ("EPRO"), pursuant to which we obtained
 an exclusive license from EPRO technology to undertake development of products relating to the R-enantiomer and S-enantiomer of DOTAP Chloride for worldwide commercialization in a composition and method of inducing an immune response in a subject
 by administering at least one cationic lipid with or without an antigen. The DOTAP License Agreement expires on a licensed product-by-licensed product and country-by-country basis until the expiration of the obligation to pay royalties applicable
 to such licensed product in such country. We have the right to unilaterally terminate the DOTAP License Agreement (in its entirety or on a licensed product-by-licensed product or country-by-country basis) at any time for any reason upon prior
 written notice.

 Cooperative Research and Development Agreement for Intramural-PHS Clinical Research with The U.S. Department of Health and Human Services.

 Effective February 2, 2016, we entered into a Cooperative Research and Development Agreement (the " CRADA ") with the U.S. Department of
 Health and Human Services, as represented by the National Cancer Institute (" NCI "), pursuant to which the parties agreed to perform certain research and development activities as defined by the exhibited
 Research Plan. The principal goal of the CRADA is to determine whether our Versamune immunotherapeutic technology will be effective for enhancing delivery of cancer vaccines or viral vaccines or other immunotherapies developed by the Vaccine
 Branch, Center for Cancer Research, NCI, in mouse models and in human clinical studies. The CRADA provides for development, testing and studies to be conducted in conjunction with the Vaccine Branch involving Versamune and Multi-epitope (ME) T
 cell receptor gamma alternate reading frame protein peptide (TARP) to develop a treatment for prostate cancer using autologous dendritic cells and co- administered locally with ME TARP peptides co-formulated with Versamune immunotherapeutic
 technology in a non-cellular vaccine platform.

 Cost Reimbursement Agreement with University of Kentucky Research Foundation

 Effective November 1, 2015, we entered into an annual Research Agreement (the "Cost Reimbursement Agreement") with the University of Kentucky Research Foundation ("UKRF"),
 pursuant to which UKRF agreed to test PDS Biotech's preclinical and clinical-stage formulations based on HPV, TARP, MUC1, Melanoma antigens as specified more fully in the statement of work. The cost reimbursement agreement has been renewed
 annually, and was renewed on June 30, 2023, for an anticipated cost of $628,171. The agreement terminates on June 30, 2024, unless extended by written mutual agreement of parties or is terminated by one of the parties. Either party may terminate
 the Cost Reimbursement Agreement for any reason with thirty (30) days written notice.

 Cost Reimbursement and Sponsored Agreement with University of Kentucky Research Foundation - II.

 Effective November 1, 2015, we entered into an annual Research Agreement (the "Cost Reimbursement Agreement") with the University of Kentucky Research Foundation ("UKRF"),
 pursuant to which UKRF agreed to test PDS Biotech's preclinical and clinical-stage formulations based on HPV, TARP, MUC1, Melanoma antigens as specified more fully in the statement of work. The cost reimbursement agreement has been renewed
 annually, and was renewed on June 30, 2023, for an anticipated cost of $13,897. The agreement terminates on June 30, 2024, unless extended by written mutual agreement of parties or is terminated by one of the parties. Either party may terminate
 the Cost Reimbursement Agreement for any reason with thirty (30) days written notice.

 Clinical Trial Collaboration and Supply Agreement with MSD International GmbH.

 Effective May 19, 2017, we entered into a Clinical Trial Collaboration and Supply Agreement (the "CTCSA") with MSD International GmbH ("Merck") pursuant to which we and
 Merck agreed to collaborate in a Phase 2 clinical trial to evaluate the safety, and preliminary efficacy of the concomitant and/or sequenced administration of the combination of a Merck compound (i.e., pembrolizumab, a humanized anti-human PD-1
 monoclonal antibody) and our compound (i.e., PDS0101, a cationic lipid-based therapeutic vaccine combining HPV peptides) in treatment of patients with recurrent or metastatic head and neck cancer and high-risk human papillomavirus-16 (HPV 16)
 infection. The term of the CTCSA commenced on May 19, 2017 and will continue until the earlier of (i) delivery of the final trial report and (ii) study completion (i.e., upon database lock of the trial results), or until terminated by either
 party. In the event the CTCSA is terminated by Merck upon a material breach by PDS Biotech, PDS Biotech must reimburse Merck for its direct manufacturing costs, such as manufacturing fees, raw materials, direct labor, freight and duty, factory
 overhead costs and its indirect manufacturing costs, such as allocations of indirect factory overhead and site support costs. This agreement was amended on October 28, 2019 to reflect that the trial will be for first in line treatment of
 disease.

 On October 28, 2019, we entered into an amendment to the clinical trial collaboration agreement with Merck to evaluate the combination of our lead Versamune based
 immunotherapy, PDS0101, with Merck's anti-PD-1 therapy, Keytruda (pembrolizumab), in a Phase 2 clinical trial. The modification to the clinical trial design to evaluate PDS0101 in combination with Keytruda as first-line treatment comes as a
 result of Merck's approval by the FDA on June 10, 2019 for first line treatment of patients with metastatic or unresectable recurrent HNSCC using Keytruda in combination with platinum and fluorouracil (FU) for all patients and as a single agent
 for patients whose tumors express PD-L1 as determined by an FDA-approved test. The trial was initiated in November of 2020 to evaluate the efficacy and safety of the combination as a first-line treatment in patients with recurrent or metastatic
 head and neck cancer and high-risk human papillomavirus-16 (HPV16) infection.

 Other Research and Development Agreements

 Cooperative Research and Development Agreement for Intramural-PHS Clinical Research with The U.S. Department of Health and Human Services.

 Effective April 22, 2019, we entered into a Cooperative Research and Development Agreement (the " CRADA ") with the U.S. Department of
 Health and Human Services, as represented by the National Cancer Institute (" NCI "), pursuant to which the parties agreed to perform certain research and development activities as defined by the exhibited
 Research Plan. Under the agreement, we will collaborate with the NCI's Genitourinary Malignancies Branch ("GMB") and Laboratory of Tumor Immunology and Biology ("LTIB") with plans to conduct a Phase 2 clinical trial evaluating PDS0101 with
 novel immune-modulating agents M7824 and NHS-IL12 being studied at NCI as part of a CRADA with EMD Serono ("Merck KGaA"). The Phase 2 clinical trial was initiated in June of 2020. The CRADA also involves preclinical evaluation of PDS0101 in
 combination with other therapeutic modalities upon the mutual agreement of both parties. In April 2020, this agreement was amended to include PDS0103, in preclinical and clinical development for treatment of ovarian, breast, colorectal and lung
 cancers.

 The term of the CRADA is five (5) years, starting April 22, 2019. Pursuant to Appendix A, we agreed to provide $110,000 annually, the first payment of which is to be made on
 the first anniversary of the CRADA Effective date or upon the initiation of a Phase 2 clinical trial as the NIH Clinical Center, whichever comes first for NCI to use in connection with acquiring technical, statistical, and administrative support
 for the clinical research activities, as well as to pay for supplies and travel expenses and infrastructure costs. The CRADA may be terminated by either party at any time by mutual written consent. Either party may unilaterally terminate the
 CRADA at any time by providing sixty (60) days written notice. If we terminate prior to the completion of all approved or active study protocol(s) pursuant to the CRADA, we must supply enough study test product to complete these study protocol(s)
 unless termination is for safety reasons. If the CRADA is mutually or unilaterally terminated by PDS Biotech before its expiration, we must pay non-cancellable obligations for personnel for a period of six (6) months after the termination date or
 until the expiration date of the CRADA, whichever is sooner. If we suspend development on the test article without the transfer of its active development efforts, assets, and obligations to a third party within ninety (90) days of
 discontinuation, NCI may continue development. In such event, we must transfer all information necessary to enable NCI to contract for the manufacture of the test article and grant NCI a nonexclusive, irrevocable, worldwide, paid-up license
 regarding same.

 Option to License with the University of Georgia Research Foundation of Georgia Research Foundation

 On October 25, 2021, we entered into a non-exclusive agreement to license Computationally Optimized Broadly Reactive Antigen (COBRA) with the University of Georgia Research
 Foundation. This agreement allows us to develop, manufacture and use COBRA antigens in a clinical trial for a universal influenza vaccine worldwide. The term of the agreement extends twelve months after initiation of the first Phase 1 clinical
 trial and may be extended upon agreement of the parties. We may convert the option to a full agreement any time prior to the conclusion of the term.

 Competition

 The biotechnology and pharmaceutical industries are characterized by intense competition to develop new technologies and proprietary products. We are aware of various
 established companies, including major pharmaceutical companies, broadly engaged in immunotherapies and vaccines in research and development that may compete directly with the products we are developing including Johnson & Johnson
 Innovative Medicine (part of Johnson & Johnson), Sanofi-Aventis, GlaxoSmithKline plc, Merck and Pfizer, among others. In addition, there are many development-stage biotechnology companies in various immunotherapy and vaccine development
 including, but not limited to Merus N.V., F-Star Therapeutics, Inovio, Kite Pharma, Hookipa, Moderna, ZIOPHARM Oncology, Heat Biologics, Harpoon Therapeutics, BioNTech, Osivax, Medicago, Vaxart, and Flugen. If one or more of these companies is
 successful in developing their technologies, it could materially impact our business.

 While we believe that the Versamune, Versamune in combination with PDS01ADC and Infectimune platforms provide us with competitive advantages, we face competition from
 many different sources, including biotechnology and pharmaceutical companies, academic institutions, government agencies, as well as public and private research institutions. Any products that we may commercialize will have to compete with
 existing products and therapies as well as new products and immunotherapies that may become available in the future.

 We anticipate that we will face intense and increasing competition as new immunotherapies enter the market and advanced technologies become available. We expect any
 products that we develop and commercialize to compete based on, among other things, efficacy, safety, convenience of administration and delivery, price, availability of therapeutics, the level of generic competition and the availability of
 reimbursement from government and other third-party payors. Our competitors may obtain FDA or other regulatory approval for their products more rapidly than us and may obtain approval for their products, which could result in our competitors
 establishing a strong market position before we are able to enter the market. In addition, our ability to compete may be affected in many cases by insurers or other third-party payors seeking to encourage the use of generic products.

 Government Regulation and Product Approval

 Federal, state and local government authorities in the United States and in other countries extensively regulate, among other things, the research, development, testing,
 manufacturing, quality control, approval, labeling, packaging, storage, record-keeping, promotion, advertising, distribution, post-approval monitoring and reporting, marketing and export and import of biological and pharmaceutical products such
 as those we are developing. Our product candidates must be approved by the FDA before they may be legally marketed in the United States and by the appropriate foreign regulatory agency before they may be legally marketed in foreign countries.
 Generally, its activities in other countries will be subject to regulation that is similar in nature and scope as that imposed in the United States. The process for obtaining regulatory marketing approvals and the subsequent compliance with
 appropriate federal, state, local and foreign statutes and regulations require the expenditure of substantial time and financial resources.

 U.S. Product Development Process

 In the United States, the FDA regulates biological drug products under the Federal Food, Drug and Cosmetic Act, or FDCA, and the Public Health Service Act, or PHSA, and implementing regulations.
 Products are also subject to certain other federal, state and local statutes and regulations. The process of obtaining regulatory approvals and the subsequent compliance with appropriate federal, state, local and foreign statutes and regulations
 requires the expenditure of substantial time and financial resources. Failure to comply with the applicable U.S. requirements at any time during the product development process, approval process or post-approval, may subject an applicant to
 administrative or judicial action. FDA decisions or enforcement actions could include, among other actions, refusal to approve pending applications, withdrawal of an approval, a clinical hold, warning letters, product recalls or withdrawals from
 the market, product seizures, total or partial suspension of production or distribution injunctions, fines, refusals of government contracts, restitution, disgorgement or civil or criminal penalties. Any agency or judicial enforcement action
 could have a material adverse effect on PDS Biotech.

 The process required by the FDA before a biological drug product may be marketed in the United States generally involves the following:

 completion of nonclinical laboratory tests and animal studies according to good laboratory practice regulations, or GLP, and applicable requirements for the humane use of laboratory animals or other applicable regulations;

 submission to the FDA of an investigational new drug application, or an IND, which must become effective before human clinical studies may begin;

 approval by an independent institutional review board, or IRB, representing each clinical site before each clinical trial may be initiated;

 performance of adequate and well-controlled human clinical studies according to the FDA's regulations commonly referred to as good clinical practice, or GCP, and any additional requirements for the protection of human research subjects
 and their health information, to establish the safety and efficacy of the proposed biological product for its intended use;

 submission to the FDA of a Biologics License Application, or BLA, for marketing approval that meets applicable requirements to ensure the continued safety, purity, and potency/efficacy of the product that is the subject of the BLA
 based on results of nonclinical testing and clinical studies (including among other things clinical data, chemistry, and manufacturing and controls (CMC) data);

 review by an FDA advisory committee, where appropriate or if applicable;

 satisfactory completion of an FDA inspection of the manufacturing facility or facilities where the biological product, or components thereof, are produced, to assess compliance with cGMP, and to assure that the facilities, methods and
 controls are adequate to preserve the biological product's identity, strength, quality and purity;

 pre-approval inspection by the FDA of the sponsor (or any third-party service providers) relative to oversight of clinical studies, clinical trial sites that generated the data in support of the BLA, and any manufacturing facilities to
 assure compliance with GCPs and the integrity of clinical data;

 payment of user fees;

 FDA review and approval, or licensure, of the BLA; and

 Compliance with any post-approval requirements, including the potential requirement to implement a Risk Evaluation and Mitigation Strategy, or REMS, and the potential requirement to conduct post-approval studies

 Satisfaction of FDA pre-market approval requirements typically takes many years and the actual time required may vary substantially based upon the type, complexity, and novelty of the product candidate or disease. A
 clinical hold may occur at any time during the life of an IND and may affect one or more specific trials or all trials conducted under the IND. The testing and approval process requires substantial time, effort, and financial resources.

 Preclinical studies

 Before testing any product candidate in humans, the product enters the preclinical testing stage. Preclinical tests, also referred to as nonclinical studies, include laboratory evaluations of
 product chemistry, toxicity and formulation, as well as in vitro and animal studies to assess the potential safety and activity of the product candidate for initial testing in humans and to establish a
 rationale for therapeutic use. The conduct of the preclinical tests must comply with federal regulations and requirements including GLP. The clinical study sponsor must submit the results of the preclinical tests, together with manufacturing
 information, analytical data, any available clinical data or literature and a proposed clinical protocol, to the FDA as part of the IND. Some preclinical testing may continue even after the IND is submitted. The results of preclinical studies and
 early clinical studies of product candidates with small patient populations may not be predictive of the results of later-stage clinical studies or the results once the applicable clinical studies are completed.

 The IND and IRB processes

 An IND is an exemption from the FDCA that allows an unapproved drug to be shipped in interstate commerce for use in an investigational clinical trial and a request for FDA authorization to
 administer an investigational drug to humans. Such authorization must be secured prior to interstate shipment and administration of any new drug that is not the subject of an approved NDA or BLA. In support of a request for an IND, a sponsor must
 submit, among other things, a protocol for each clinical trial and any subsequent protocol amendments must be submitted to the FDA as part of the IND. The sponsor may be a company seeking to develop the drug or, as in the case of an
 investigator-initiated trial, the sponsor may be an investigator who is conducting the trial. In addition, the results of the preclinical tests, together with manufacturing information, analytical data, any available clinical data or literature
 and plans for clinical trials, among other things, are submitted to the FDA as part of an IND. The FDA requires a 30-day waiting period after the filing of each IND before clinical trials may begin. This waiting period is designed to allow the
 FDA to review the IND to determine whether human research subjects will be exposed to unreasonable health risks. The IND automatically becomes effective 30 days after receipt by the FDA, unless the FDA raises concerns or questions regarding the
 proposed clinical studies and places the study on a clinical hold within that 30-day time period. In such a case, the IND sponsor and the FDA must resolve any outstanding concerns before the clinical study can begin. The FDA may also impose
 clinical holds on a biological product candidate at any time before or during clinical studies due to safety concerns or non-compliance. If the FDA imposes a clinical hold, studies may not recommence without FDA authorization and then only under
 terms authorized by the FDA. Accordingly, PDS Biotech cannot be sure that submission of an IND will result in the FDA allowing clinical studies to begin, or that, once begun, issues will not arise that suspend or terminate such studies.

 Following commencement of a clinical trial under an IND, the FDA may also place a clinical hold or partial clinical hold on that trial. A clinical hold is an order issued by the FDA to the
 sponsor to delay a proposed clinical investigation or to suspend an ongoing investigation. A partial clinical hold is a delay or suspension of only part of the clinical work requested under the IND. For example, a specific protocol or part of a
 protocol is not allowed to proceed, while other protocols may do so. No more than 30 days after imposition of a clinical hold or partial clinical hold, the FDA will provide the sponsor a written explanation of the basis for the hold. Following
 issuance of a clinical hold or partial clinical hold, an investigation may only resume after the FDA has notified the sponsor that the investigation may proceed. The FDA will base that determination on information provided by the sponsor
 correcting the deficiencies previously cited or otherwise satisfying the FDA that the investigation can proceed.

 A sponsor may choose, but is not required, to conduct a foreign clinical study under an IND. When a foreign clinical study is conducted under an IND, all IND requirements must be met unless
 waived. When the foreign clinical study is not conducted under an IND, the sponsor must ensure that the study complies with certain FDA regulatory requirements in order to use the study as support for an IND or application for marketing approval.
 Specifically, FDA has promulgated regulations governing the acceptance of foreign clinical trials not conducted under an IND, establishing that such studies will be accepted as support for an IND or application for marketing approval if the study
 was conducted in accordance with GCP, including review and approval by an independent ethics committee, or IEC, and use of proper procedures for obtaining informed consent from subjects, and the FDA is able to validate the data from the study
 through an on-site inspection if FDA deems such inspection necessary. The GCP requirements encompass both ethical and data integrity standards for clinical studies. The FDA's regulations are intended to help ensure the protection of human
 subjects enrolled in non-IND foreign clinical trials, as well as the quality and integrity of the resulting data. They further help ensure that non-IND foreign studies are conducted in a manner comparable to that required for IND studies. If a
 marketing application is based solely on foreign clinical data, the FDA requires that the foreign data be applicable to the U.S. population and U.S. medical practice; the studies must have been performed by clinical investigators of recognized
 competence; and the FDA must be able to validate the data through an on-site inspection or other appropriate means, if the FDA deems such an inspection to be necessary.

 In addition to the foregoing IND requirements, an IRB representing each institution participating in the clinical trial must review and approve the plan for any clinical trial before it commences
 at that institution, and the IRB must conduct continuing review and reapprove the study at least annually. The IRB must review and approve, among other things, the study protocol and informed consent information to be provided to study subjects.
 An IRB must operate in compliance with FDA regulations. An IRB can suspend or terminate approval of a clinical trial at its institution, or an institution it represents, if the clinical trial is not being conducted in accordance with the IRB's
 requirements or if the product candidate has been associated with unexpected serious harm to patients. A separate submission to the existing IND must be made for each successive clinical trial conducted during product development, as well as
 amendments to previously submitted clinical trials. Further, an independent IRB for each institution participating in the clinical trial must review and approve the plan for any clinical trial, its informed consent form, and other communications
 to study subjects before the clinical trial commences at that site. The IRB must continue to oversee the clinical trial while it is being conducted, including any changes to the study plans.

 Additionally, some trials are overseen by an independent group of qualified experts organized by the trial sponsor, known as a data safety monitoring board or committee. This group provides
 authorization for whether or not a trial may move forward at designated check points based on access that only the group maintains to available data from the trial. Suspension or termination of development during any phase of clinical trials can
 occur if it is determined that the participants or patients are being exposed to an unacceptable health risk. Other reasons for suspension or termination may be made by us based on evolving business objectives and/or competitive climate.

 Information about certain clinical trials must be submitted within specific timeframes to the National Institutes of Health, or NIH, for public dissemination on its ClinicalTrials.gov website.

 Human clinical trials in support of an NDA or BLA

 Clinical trials involve the administration of the biological product candidate to volunteers or patients under the supervision of qualified investigators, generally physicians not employed by or
 under the trial sponsor's control, in accordance with GCP requirements, which include, among other things, the requirement that all research subjects provide their informed consent in writing before their participation in any clinical trial.
 Clinical trials are conducted under protocols detailing, among other things, the objectives of the clinical trial, dosing procedures, subject selection (for example, inclusion and exclusion criteria), and the parameters to be used to monitor
 subject safety, including stopping rules that assure a clinical trial will be stopped if certain adverse events should occur. Each protocol and any amendments to the protocol must be submitted to the FDA as part of the IND and require IRB
 approval. Human clinical trials are typically conducted in four sequential phases that may overlap or be combined:

 Phase 1. The biological product is initially introduced into healthy human subjects and tested for safety. In the case of some products for severe or life-threatening diseases, especially when the product may be too inherently toxic to
 ethically administer to healthy volunteers, the initial human testing is often conducted in seriously ill subjects. These studies are designed to test the safety, dosage tolerance, absorption, metabolism and pharmacologic actions of the
 investigational product in humans, the side effects associated with increasing doses, and, if possible, to gain early evidence of effectiveness.

 Phase 2. The biological product is evaluated in a limited patient population to identify possible adverse effects and safety risks, to preliminarily evaluate the efficacy of the product for specific targeted diseases and to determine
 dosage tolerance, optimal dosage and dosing schedule. Multiple Phase 2 clinical studies may be conducted to obtain information prior to beginning larger and more expensive Phase 3 clinical studies.

 Phase 3. The biological product is administered to an expanded patient population, generally at geographically dispersed clinical trial sites, in well-controlled clinical trials to generate enough data to statistically evaluate the
 dosage, clinical efficacy, potency, and safety of the product for approval, to establish the overall risk to benefit ratio of the product and provide an adequate basis for product labeling.

 Phase 4. Post-approval studies, which are conducted following initial approval, are typically conducted to gain additional experience and data from treatment of patients in the intended therapeutic indication.

 Although these are the typical phases of progression, and characteristics of the phases of a clinical development program, certain expedited programs allow for variations that could support a
 marketing application based on surrogate endpoints, intermediate clinical endpoints, or single-arm as opposed to comparative or placebo-controlled studies (for example, FDA could rely on well-controlled Phase 2 studies for evidence of
 effectiveness under certain circumstances).

 In December 2022, with the passage of the Food and Drug Omnibus Reform Act, or FDORA, Congress required sponsors to develop and submit a diversity action plan for each Phase 3 clinical trial or
 any other "pivotal study" of a new drug or biological product. These plans are meant to encourage the enrollment of more diverse patient populations in late-stage clinical trials of FDA-regulated products. Specifically, action plans must include
 the sponsor's goals for enrollment, the underlying rationale for those goals, and an explanation of how the sponsor intends to meet them.

 During all phases of clinical development, regulatory agencies require extensive monitoring and auditing of all clinical activities, clinical data, and clinical trial investigators. Annual
 progress reports detailing the results of the clinical trials must be submitted to the FDA. Written IND safety reports must be promptly submitted to the FDA and the investigators of potential safety risks, from clinical trials or any other
 source, including for serious and unexpected adverse events and serious and unexpected suspected adverse reactions, any findings from other studies suggesting a significant risk in humans exposed to the drug, tests in laboratory animals or in
 vitro testing that suggest a significant risk for human subjects, or any clinically important increase in the rate of a serious suspected adverse reaction over that listed in the protocol or investigator brochure. The sponsor must submit an IND
 safety report within 15 calendar days after the sponsor determines that the information qualifies for reporting. The sponsor also must notify the FDA of any unexpected fatal or life-threatening suspected adverse reaction as soon as possible but
 no later than within seven calendar days after the sponsor's initial receipt of the information. Phase 1, Phase 2 and Phase 3 clinical trials may not be completed successfully within any specified period, if at all. The FDA, the sponsor or its
 data safety monitoring board, or DSMB, which receives special access to unblinded data during the clinical trial, may suspend or terminate a clinical trial at any time on various grounds, including a finding that the research subjects are being
 exposed to an unacceptable health risk or no demonstration of efficacy. Similarly, an IRB can suspend or terminate approval of a clinical trial at its institution if the clinical trial is not being conducted in accordance with the IRB's
 requirements or if the biological product has been associated with unexpected serious harm to subjects. The FDA will typically inspect one or more clinical sites to assure compliance with GCP and the integrity of the clinical data submitted.

 Information about certain clinical trials must be submitted within specific timeframes to the National Institutes of Health, or NIH, for public dissemination on their ClinicalTrials.gov website,
 and other jurisdictions have similar laws that may apply.

 Concurrently with clinical trials, companies usually complete additional studies and must also develop additional information about the physical characteristics of the biological product as well
 as finalize a process for manufacturing the product in commercial quantities in accordance with cGMP requirements. To help reduce the risk of the introduction of adventitious agents with use of biological products, the PHSA emphasizes the
 importance of manufacturing controls for products whose attributes cannot be precisely defined. The manufacturing process must be capable of consistently producing quality batches of the product candidate and, among other criteria, the sponsor
 must develop methods for testing the identity, strength, quality, potency and purity of the final biological product. Additionally, appropriate packaging must be selected and tested, and stability studies must be conducted to demonstrate that the
 biological product candidate does not undergo unacceptable deterioration over its shelf life.

 U.S. Review and Approval Processes

 After the completion of clinical trials of a biological product, FDA approval of a BLA must be obtained before commercial marketing of the biological product. The BLA must
 include results of product development, laboratory and animal studies, human trials, information on the manufacture and composition of the product, proposed labeling and other relevant information. The testing and approval processes require
 substantial time and effort and there can be no assurance that the FDA will accept the BLA for filing and, even if filed, that any approval will be granted on a timely basis, if at all.

 Under the Prescription Drug User Fee Act, or PDUFA, as amended, each BLA must be accompanied by a significant application fee. For approved drugs, including BLA-licensed
 biological products, PDUFA also imposes an annual PDUFA program fee. The FDA adjusts the PDUFA user fees on an annual basis. Under federal law, the submission of BLAs requiring clinical data is additionally subject to an application user fee,
 which for federal fiscal year 2023 is $3,242,026. The sponsor of an approved BLA is also subject to annual program fees, which for fiscal year 2023 are $393,933 per eligible product. Fee waivers or reductions are available in certain
 circumstances, including a waiver of the application fee for the first application filed by a small business. No user fees are assessed on BLAs for products designated as orphan drugs unless the application for the product also includes a
 non-orphan indication.

 Within 60 days following submission of the application, the FDA reviews a BLA submitted to determine if it is substantially complete before the agency accepts it for
 filing. The FDA may refuse to file any BLA that it deems incomplete or not properly reviewable at the time of submission and may request additional information. In this event, the BLA must be resubmitted with the additional information. The
 resubmitted application also is subject to review before the FDA accepts it for filing. Once the submission is accepted for filing, the FDA begins an in-depth substantive review of the BLA. The FDA has agreed to specified performance goals in
 the review process of BLAs. Most such applications are meant to be reviewed within ten months from the filing date, and most applications for "priority review" products are meant to be reviewed within six months of the filing date. The review
 process and the PDUFA goal date may be extended by the FDA for three additional months to consider new information or clarification provided by the applicant to address an outstanding deficiency identified by the FDA following the original
 submission.

 The FDA reviews the BLA to determine, among other things, whether the proposed product is safe, potent, and/or effective for its intended use, and has an acceptable purity
 profile, and whether the product is being manufactured in accordance with cGMP to assure and preserve the product's identity, safety, strength, quality, potency and purity. The FDA may refer an application to an advisory committee for review,
 evaluation and recommendation as to whether the application should be approved, and applications for new molecular entities and original BLAs are generally discussed at advisory committee meetings unless the FDA determines that this type of
 consultation is not needed under the circumstances. The FDA is not bound by the recommendations of an advisory committee, but it considers such recommendations carefully when making decisions.

 During the biological product approval process, the FDA also will determine whether a Risk Evaluation and Mitigation Strategy, or REMS, is necessary to assure the safe use
 of the biological product. To determine whether a REMS is needed, the FDA will consider the size of the population likely to use the product, seriousness of the disease, expected benefit of the product, expected duration of treatment, and
 seriousness of known or potential adverse events. REMS can include medication guides, physician communication plans for healthcare professionals, and elements to assure safe use, or EYASU. EYASU may include, but are not limited to, special
 training or certification for prescribing or dispending, dispensing only under certain circumstances, special monitoring, and the use of patient registries. The FDA may require a REMS before approval or post-approval if it becomes aware of a
 serious risk associated with the use of a product. If the FDA concludes a REMS is needed, the sponsor of the BLA must submit a proposed REMS. The FDA will not approve a BLA without a REMS, if required. The requirement for a REMS can materially
 affect the potential market and profitability of a product.

 Before approving a BLA, the FDA will typically inspect the facilities at which the product is manufactured. These pre-licensing inspections may cover all facilities
 associated with a BLA submission, including component manufacturing, finished product manufacturing, and control testing laboratories. The FDA will not approve the product unless it is satisfied that the manufacturing establishments and
 processes supporting the BLA meet the appropriate requirements and comply with the applicable regulations (including cGMP requirements and adequate assurance for consistent commercial production of the product within required specifications).
 Additionally, before approving a BLA, the FDA will typically conduct a pre-approval inspection of regulated participants in clinical trials (for example, the sponsor, investigators responsible for specific sites, and CROs) to assure that the
 clinical trials were conducted in compliance with the IND and GCP requirements. To assure cGMP and GCP compliance, an applicant must incur significant expenditure of time, money and effort in the areas of training, record keeping, production,
 and quality control.

 Notwithstanding the submission of relevant data and information, the FDA may ultimately decide that the BLA does not satisfy its regulatory criteria for approval and deny
 approval. Data obtained from clinical studies are not always conclusive and the FDA may interpret data differently than PDS Biotech interprets the same data. If the agency decides not to approve the BLA in its present form, the FDA will issue a
 complete response letter that describes all of the specific deficiencies in the BLA identified by the FDA. The deficiencies identified may be minor, for example, requiring labeling changes, or major, for example, requiring additional clinical
 studies. Additionally, the complete response letter may include recommended actions that the applicant might take to place the application in a condition for approval. If a complete response letter is issued, the applicant may either resubmit the
 BLA, addressing all of the deficiencies identified in the letter, or withdraw the application. Even if the submission is re-submitted with additional information, the FDA ultimately may decide that the application does not satisfy the regulatory
 criteria for approval.

 If a product receives regulatory approval, the approval may be significantly limited to specific diseases and dosages or the indications for use may otherwise be limited,
 which could restrict the commercial value of the product.

 Further, the FDA may require that certain contraindications, warnings or precautions be included in the product labeling. The FDA may impose restrictions and conditions on
 product distribution, prescribing, or dispensing in the form of a risk management plan, or otherwise limit the scope of any approval. In addition, the FDA may require post marketing clinical studies, sometimes referred to as Phase 4 clinical
 studies, designed to further assess a biological product's safety and effectiveness, and testing and surveillance programs to monitor the safety of approved products that have been commercialized. The FDA may prevent or limit further marketing
 of a product based on the results of post-market studies or surveillance programs. After approval, many types of changes to the approved product, such as adding new indications, manufacturing changes and additional labeling claims, are subject
 to further testing requirements and FDA review and approval.

 In addition, under the Pediatric Research Equity Act, a BLA or supplement to a BLA for a new indication, dosage form, dosage regimen, or route of administration must contain
 data that is adequate to assess the safety and effectiveness of the product for the claimed indications in all relevant pediatric subpopulations and to support dosing and administration for each pediatric subpopulation for which the product is
 safe and effective. The FDA may, on its own initiative or at the request of the applicant, grant deferrals for submission of some or all pediatric data until after approval of the product for use in adults, or full or partial waivers from the
 pediatric data requirements.

 Fast track, breakthrough therapy and priority review designations

 The FDA is authorized to designate certain products for expedited review if they are intended to address an unmet medical need in the treatment of a serious or
 life-threatening disease or condition. These programs are referred to as fast track designation, breakthrough therapy designation and priority review designation. In May 2014, the FDA published a final Guidance for Industry titled "Expedited
 Programs for Serious Conditions-Drugs and Biologics," which provides guidance on the FDA programs that are intended to facilitate and expedite development and review of new product candidates as well as threshold criteria generally applicable to
 concluding that a product candidate is a candidate for these expedited development and review programs.

 Specifically, the FDA may designate a product for fast track review if it is intended, whether alone or in combination with one or more other products, for the treatment of a
 serious or life-threatening disease or condition, and it demonstrates the potential to address unmet medical needs for such a disease or condition. For fast track products, sponsors may have greater interactions with the FDA and the FDA may
 initiate review of sections of a fast track product's application before the application is complete. This rolling review may be available if the FDA determines, after preliminary evaluation of clinical data submitted by the sponsor, that a fast
 track product may be effective. The sponsor must also provide, and the FDA must approve, a schedule for the submission of the remaining information and the sponsor must pay applicable user fees. However, the FDA's time period goal for reviewing a
 fast track application does not begin until the last section of the application is submitted. In addition, the fast track designation may be withdrawn by the FDA if the FDA believes that the designation is no longer supported by data emerging in
 the clinical trial process.

 Second, a product may be designated as a breakthrough therapy if it is intended, either alone or in combination with one or more other products, to treat a serious or
 life-threatening disease or condition and preliminary clinical evidence indicates that the product may demonstrate substantial improvement over existing therapies on one or more clinically significant endpoints, such as substantial treatment
 effects observed early in clinical development. The FDA may take certain actions with respect to breakthrough therapies, including holding meetings with the sponsor throughout the development process; providing timely advice to the product
 sponsor regarding development and approval; involving more senior staff in the review process; assigning a cross-disciplinary project lead for the review team; and taking other steps to design the clinical trials in an efficient manner.

 Third, the FDA may designate a product for priority review if it is a product that treats a serious condition and, if approved, would provide a significant improvement in
 safety or effectiveness. The FDA determines, on a case-by-case basis, whether the proposed product represents a significant improvement when compared with other available therapies. Significant improvement may be illustrated by evidence of
 increased effectiveness in the treatment of a condition, elimination or substantial reduction of a treatment-limiting product reaction, documented enhancement of patient compliance that may lead to improvement in serious outcomes, and evidence of
 safety and effectiveness in a new subpopulation. A priority designation is intended to direct overall attention and resources to the evaluation of such applications, and to shorten the FDA's goal for taking action on a marketing application from
 ten months to six months.

 Accelerated approval pathway

 The FDA may grant accelerated approval to a drug for a serious or life-threatening condition that provides meaningful therapeutic advantage to patients over existing
 treatments based upon a determination that the drug has an effect on a surrogate endpoint that is reasonably likely to predict clinical benefit. The FDA may also grant accelerated approval for such a condition when the product has an effect on an
 intermediate clinical endpoint that can be measured earlier than an effect on irreversible morbidity or mortality, or IMM, and that is reasonably likely to predict an effect on irreversible morbidity or mortality or other clinical benefit, taking
 into account the severity, rarity or prevalence of the condition and the availability or lack of alternative treatments. Drugs granted accelerated approval must meet the same statutory standards for safety and effectiveness as those granted
 traditional approval.

 For the purposes of accelerated approval, a surrogate endpoint is a marker, such as a laboratory measurement, radiographic image, physical sign or other measure that is
 thought to predict clinical benefit, but is not itself a measure of clinical benefit. Surrogate endpoints can often be measured more easily or more rapidly than clinical endpoints. An intermediate clinical endpoint is a measurement of a
 therapeutic effect that is considered reasonably likely to predict the clinical benefit of a drug, such as an effect on IMM. The FDA has limited experience with accelerated approvals based on intermediate clinical endpoints, but has indicated
 that such endpoints generally may support accelerated approval where the therapeutic effect measured by the endpoint is not itself a clinical benefit and basis for traditional approval, if there is a basis for concluding that the therapeutic
 effect is reasonably likely to predict the ultimate clinical benefit of a drug.

 The accelerated approval pathway is most often used in settings in which the course of a disease is long and an extended period of time is required to measure the intended
 clinical benefit of a drug, even if the effect on the surrogate or intermediate clinical endpoint occurs rapidly. Thus, accelerated approval has been used extensively in the development and approval of drugs for treatment of a variety of cancers
 in which the goal of therapy is generally to improve survival or decrease morbidity and the duration of the typical disease course requires lengthy and sometimes large trials to demonstrate a clinical or survival benefit.

 The accelerated approval pathway is contingent on a sponsor's agreement to conduct, in a diligent manner, additional post-approval confirmatory studies to verify and describe
 the drug's clinical benefit. As a result, a drug candidate approved on this basis is subject to rigorous post-marketing compliance requirements, including the completion of Phase 4 or post-approval clinical trials to confirm the effect on the
 clinical endpoint. Failure to conduct required post-approval studies, or confirm a clinical benefit during post-marketing studies, would allow the FDA to withdraw the drug from the market on an expedited basis. All promotional materials for drug
 candidates approved under accelerated regulations are subject to prior review by the FDA.

 Even if a product qualifies for one or more of these programs, the FDA may later decide that the product no longer meets the conditions for qualification or decide that the
 time period for FDA review or approval will not be shortened. In addition, the manufacturer of an investigational drug for a serious or life-threatening disease is required to make available, such as by posting on its website, its policy on
 responding to requests for expanded access. Furthermore, fast track designation, breakthrough therapy designation, accelerated approval and priority review do not change the standards for approval and may not ultimately expedite the development
 or approval process.

 Post-Approval Requirements

 Any products for which PDS Biotech receives FDA approvals are subject to continuing regulation by the FDA, including, among other things, record-keeping requirements,
 reporting of adverse experiences with the product, providing the FDA with updated safety and efficacy information, product sampling and distribution requirements, and complying with FDA promotion and advertising requirements, which include,
 among others, standards for direct-to-consumer advertising, restrictions on promoting products for uses or in patient populations that are not described in the product's approved uses or consistent with the approved labeling, known as
 'off-label' use, limitations on industry-sponsored scientific and educational activities, and requirements for promotional activities involving the internet. Although physicians may prescribe legally available products for off-label uses, if
 the physicians deem to be appropriate in their professional medical judgment, manufacturers may not market or promote such off-label uses. Recent court decisions have impacted the FDA's enforcement activity regarding off-label promotion in
 light of First Amendment considerations; however, there are still significant risks in this area in part due to the potential False Claims Act exposure. Further, the FDA has not materially changed its position on off-label promotion following
 legal setbacks on First Amendment grounds and the DOJ has consistently asserted in FCA briefings that "speech that serves as a conduit for violations of the law is not constitutionally protected."

 After approval, most changes to the approved product, such as adding new indications or other labeling claims, are subject to prior FDA review and approval. There also are
 continuing, annual user fee requirements for any marketed products and the establishments at which such products are manufactured, as well as new application fees for supplemental applications with clinical data.

 In addition, quality control and manufacturing procedures must continue to conform to applicable manufacturing requirements after approval to ensure the long-term stability
 of the product. cGMP regulations require among other things, quality control and quality assurance as well as the corresponding maintenance of records and documentation and the obligation to investigate and correct any deviations from cGMP.
 Manufacturers and other entities involved in the manufacture and distribution of approved products are required to register their establishments with the FDA and certain state agencies and are subject to periodic unannounced inspections by the
 FDA and certain state agencies for compliance with cGMP and other laws. Accordingly, manufacturers must continue to expend time, money, and effort in the area of production and quality control to maintain cGMP compliance. Discovery of problems
 with a product after approval may result in restrictions on a product, manufacturer, or holder of an approved BLA, including, among other things, recall or withdrawal of the product from the market. In addition, changes to the manufacturing
 process are strictly regulated, and depending on the significance of the change, may require prior FDA approval before being implemented. Other types of changes to the approved product, such as adding new indications and claims, are also
 subject to further FDA review and approval.

 The Drug Supply Chain Security Act, or DSCSA imposes obligations on manufacturers of prescription biopharmaceutical products for commercial distribution, regulating the
 distribution of the products at the federal level, and sets certain standards for federal or state registration and compliance of entities in the supply chain (manufacturers and repackagers, wholesale distributors, third-party logistics
 providers, and dispensers). The DSCSA preempts certain previously enacted state pedigree laws and the pedigree requirements of the Prescription Drug Marketing Act, or PDMA. Trading partners within the drug supply chain must now ensure certain
 product tracing requirements are met that they are doing business with other authorized trading partners, and they are required to exchange transaction information, transaction history, and transaction statements. Product identifier information
 (an aspect of the product tracing scheme) is also now required. The DSCSA requirements, development of standards, and the system for product tracing have been and will continue to be phased in over a period of years. The distribution of product
 samples continues to be regulated under the PDMA, and some states also impose regulations on drug sample distribution.

 Once an approval is granted, the FDA may withdraw the approval if compliance with regulatory requirements and standards is not maintained or if problems occur after the
 product reaches the market. Later discovery of previously unknown problems with a product, including AEs of unanticipated severity or frequency, or with manufacturing processes, or failure to comply with regulatory requirements, may result in
 revisions to the approved labeling to add new safety information; imposition of post-market studies or clinical trials to assess new safety risks; or imposition of distribution or other restrictions under a REMS program. Other potential
 consequences include, among other things:

 restrictions on the marketing or manufacturing of the product, including total or partial suspension of production, complete withdrawal of the product from the market or product recalls;

 fines, warning or untitled letters or holds on post-approval clinical trials;

 refusal of the FDA to approve pending BLAs or supplements to approved BLAs, or suspension or revocation of product license approvals;

 product seizure or detention, or refusal to permit the import or export of products; or

 injunctions or the imposition of civil or criminal penalties.

 In addition, the distribution of prescription drug products is subject to the Prescription Drug Marketing Act, or PDMA, which regulates the distribution of drugs and drug
 samples at the federal level, and sets minimum standards for the registration and regulation of drug distributors by the states. Both the PDMA and state laws limit the distribution of prescription drug product samples and impose requirements to
 ensure accountability in distribution.

 Failure to comply with any of the FDA's requirements could result in significant adverse enforcement actions. These include a variety of administrative or judicial sanctions,
 such as refusal to approve pending applications, license suspension or revocation, withdrawal of an approval, imposition of a clinical hold or termination of clinical trials, warning letters, untitled letters, modification of promotional
 materials or labeling, product recalls, product seizures or detentions, refusal to allow imports or exports, total or partial suspension of production or distribution, debarment, injunctions, fines, consent decrees, corporate integrity
 agreements, refusals of government contracts and new orders under existing contracts, exclusion from participation in federal and state healthcare programs, restitution, disgorgement or civil or criminal penalties, including fines and
 imprisonment. It is also possible that failure to comply with the FDA's requirements relating to the promotion of prescription drugs may lead to investigations alleging violations of federal and state healthcare fraud and abuse and other laws, as
 well as state consumer protection laws. Any of these sanctions could result in adverse publicity, among other adverse consequences.

 The FDA also may require post-marketing testing, known as Phase 4 testing, and surveillance to monitor the effects of an approved product. Discovery of previously unknown
 problems with a product or the failure to comply with applicable FDA requirements can have negative consequences, including adverse publicity, judicial or administrative enforcement, warning letters from the FDA, mandated corrective advertising
 or communications with doctors, and civil or criminal penalties, among others. Newly discovered or developed safety or effectiveness data may require changes to a product's approved labeling, including the addition of new warnings and
 contraindications, and also may require the implementation of other risk management measures. Also, new government requirements, including those resulting from new legislation, may be established, or the FDA's policies may change, which could
 delay or prevent regulatory approval of its product candidates under development.

 Regulatory Exclusivities Applicable to Biologics and Related Matters

 Abbreviated Licensure Pathway for Biosimilars: The Biologics Price Competition and Innovation Act of 2009 (BPCIA) amended the PHSA to create an abbreviated approval
 pathway for "biosimilar" biologics, that is, those shown to be highly similar to an already-FDA-licensed reference biologic. The abbreviated approval process for biosimilars under the BPCIA is similar in concept to the Abbreviated New Drug
 Application ("ANDA") for generic small molecule drugs established by the Drug Price Competition and Patent Term Restoration Act of 1984 ("Hatch-Waxman") amendments to the FDCA. As with Hatch-Waxman, the goal of the BPCIA was to increase access
 to lower-priced versions of drugs, while balancing the need to continue incentivizing innovation in drug development. Biosimilarity is defined to mean that the proposed biologic is highly similar to the reference product notwithstanding minor
 differences in clinically inactive components and that there are no clinically meaningful differences between the biological product and the reference product in terms of the safety, purity and potency of the product. Further, a biosimilar may
 be determined to be "interchangeable" with the reference product, in which case the biosimilar may be substituted for the reference product under state substitution laws, similar to the way generic small molecule drugs are substituted. The
 higher standard of interchangeability requires a showing that the biosimilar is expected to produce the same clinical result as the reference biologic in any given patient, and further that the risk to the patient in terms of safety, purity,
 and/or potency of switching between the biosimilar and the reference product is no more than using the reference product without switching.

 Regulatory Exclusivities Applicable to Biologics Under the BPCIA: The BPCIA established certain regulatory exclusivities that provide reference biologics with prescribed
 periods of time during which competing biosimilars or interchangeable biosimilars may not be approved or may not be marketed. Once its BLA is approved ("date of first licensure") the reference biologic is entitled to a period of four years
 after its date of first licensure during which time FDA is prohibited from accepting a marketing application that would seek approval of any products that are biosimilar to the branded product. In addition, the reference biologic is entitled
 to a period of 12 years after its date of first licensure during which time the FDA is prohibited from approving marketing applications for any products that are biosimilar to the branded product. In addition, the first interchangeable
 biosimilar may be entitled to a period of one year after its date of first licensure, or other periods keyed to the outcome of patent litigation if instituted, during which the FDA is prohibited from finding that any other biosimilars are
 interchangeable to the same reference biologic. The reference biologic may also be entitled to regulatory exclusivity under other statutory provisions that apply to biologics and small molecule drugs.

 Orphan Drug Exclusivity: Under the Orphan Drug Act, the FDA may designate a drug product as an "orphan drug" if it is intended to treat a rare disease or condition
 (generally meaning that it affects fewer than 200,000 individuals in the United States, or more in cases in which there is no reasonable expectation that the cost of developing and making a drug product available in the United States for
 treatment of the disease or condition will be recovered from sales of the product). A company must request orphan product designation before submitting an NDA. If the request is granted, the FDA will disclose the identity of the therapeutic
 agent and its potential use. Orphan product designation does not convey any advantage in or shorten the duration of the regulatory review and approval process. Among the other benefits of orphan drug designation are tax credits for certain
 research and an exemption from the NDA or BLA application fee. The FDA may revoke orphan drug designation, and if it does, it will publicize that the drug is no longer designated as an orphan drug.

 If the sponsor of a product with orphan designation receives the first FDA approval for that drug for the disease or condition for which it has such designation or for a
 select indication or use within the rare disease or condition for which it was designated, the product generally will receive orphan product exclusivity. Orphan product exclusivity means that the FDA may not approve any other applications for
 the same product for the same indication for seven years, except in certain limited circumstances. If a drug or drug product designated as an orphan product ultimately receives marketing approval for an indication broader than what was
 designated in its orphan product application, it may not be entitled to exclusivity. Orphan drug exclusivity, however, could also block the approval of one of our therapeutic candidates for seven years if a competitor obtains orphan drug
 designation and FDA approval of the same therapeutic candidate for the same condition or disease as our orphan-designated drug.

 Orphan exclusivity will not bar approval of another product under certain circumstances, including if a subsequent product with the same active ingredient for the same
 indication is shown to be clinically superior to the approved product on the basis of greater efficacy or safety, or providing a major contribution to patient care, or if the company with orphan drug exclusivity is not able to meet market
 demand. Further, the FDA may approve more than one product for the same orphan indication or disease as long as the products contain different active ingredients. Moreover, competitors may receive approval of different products for the
 indication for which the orphan product has exclusivity or obtain approval for the same product but for a different indication for which the orphan product has exclusivity.

 In addition, as the FDA has interpreted the Orphan Drug Act, even if a previously approved same drug does not have unexpired orphan exclusivity, a demonstration of clinical
 superiority is required for a subsequent marketing application for the same orphan-designated drug for the same disease or condition to be awarded a 7-year period of orphan exclusivity upon marketing approval. In recent years, there have been
 multiple legal challenges to this FDA interpretation, and in August 2017, Congress amended the orphan drug provisions of the FDCA through enactment of the FDA Reauthorization Act of 2017 to codify FDA's longstanding interpretation. Section 527
 of the FDCA now expressly provides that if a sponsor of an orphan-designated drug that is otherwise the same as an already approved drug for the same rare disease or condition is seeking orphan exclusivity, the FDA shall require such sponsor,
 to demonstrate that such drug is clinically superior to any already approved or licensed drug that is the same drug in order to obtain orphan drug exclusivity.

 In September 2021, the United States Court of Appeals for the Eleventh Circuit decided in Catalyst Pharmaceuticals, Inc. v. FDA that
 the FDA's interpretation of orphan drug exclusivity "for the same drug for the same disease or condition" as meaning the same "use or indication" was inappropriately narrow. This decision had the potential to significantly broaden the scope of
 orphan drug exclusivity for drugs that receive marketing approval for orphan indications that are narrower than their orphan-designated conditions in the United States. On January 24, 2023, the FDA issued a statement to address the uncertainty
 created by the circuit court's decision in Catalyst. This notification announced that, at this time, in matters beyond the scope of that court order (i.e., ordering the FDA to set aside its approval of
 the specific drug at issue), the FDA intends to continue to apply its existing regulations tying orphan drug exclusivity to the uses or indications for which the orphan drug was approved. We cannot guarantee which rules and interpretations will
 be governing going forward in different situations, that the FDA will maintain this current position, or that other judicial actions will not impact the FDA's application of the Orphan Drug Act.

 Pediatric Study Requirements and Pediatric Exclusivity: Under the Best Pharmaceuticals for Children Act (BPCA), a sponsor qualifies for "pediatric exclusivity" if it
 complies with a Written Request (WR) issued by FDA for pediatric studies. The sponsor may apply to FDA to issue a WR. Pediatric exclusivity operates by adding six months of exclusivity to the end of the latest-expiring form of exclusivity and
 may apply to patent rights or to FDA regulatory exclusivities. To qualify for pediatric exclusivity, at least one of those rights must still be currently in force at the time FDA approves the pediatric studies.

 Under the Pediatric Research Equity Act of 2003, an NDA, BLA, or supplement thereto must contain data that is adequate to assess the safety and effectiveness of the drug
 product for the claimed indications in all relevant pediatric subpopulations, and to support dosing and administration for each pediatric subpopulation for which the product is safe and effective. With enactment of the Food and Drug
 Administration Safety and Innovation Act of 2012 (FDASIA), sponsors must also submit pediatric study plans prior to the assessment data.

 Those plans must contain an outline of the proposed pediatric study or studies the applicant plans to conduct, including study objectives and design, any deferral or waiver
 requests, and other information required by regulation. The applicant, the FDA, and the FDA's internal review committee must then review the information submitted, consult with each other, and agree upon a final plan. The FDA or the applicant may
 request an amendment to the plan at any time.

 The FDA may, on its own initiative or at the request of the applicant, grant deferrals for submission of some or all pediatric data until after approval of the product for
 use in adults, or full or partial waivers from the pediatric data requirements. Additional requirements and procedures relating to deferral requests and requests for extension of deferrals are contained in FDASIA. Unless otherwise required by
 regulation, the pediatric data requirements do not apply to products with orphan designation.

 Patent Term Extensions: Patents have a limited lifespan. In most countries, including the U.S., the standard expiration of a patent is 20 years from the effective filing
 date. Various extensions of patent terms may be available in certain circumstances, for example where there are delays in obtaining FDA regulatory approvals that result in a reduction of the period of time during which we could market a product
 under patent protection. In the U.S., a patent claiming a new drug product may be eligible for a limited patent term extension under the Hatch-Waxman Act, which permits a patent restoration of up to five years for patent term lost during product
 development and the FDA regulatory review. The restoration period granted is typically one-half the time between the effective date of an IND and the submission date of an NDA less any time the applicant did not act with due diligence during the
 period, plus the time between the submission date of an NDA and the ultimate approval date less any time the applicant did not act with due diligence during the period. Patent term restoration cannot be used to extend the remaining term of a
 patent past a total of 14 years from the product's approval date. Only one patent applicable to an approved drug product is eligible for the extension, only those claims covering the approved drug, a method for using it, or a method for
 manufacturing it may be extended, and the application for the extension must be submitted prior to the expiration of the patent in question. A patent that covers multiple drugs for which approval is sought can only be extended in connection with
 one of the approvals. The USPTO reviews and approves the application for any patent term extension or restoration in consultation with the FDA. Similar provisions are available in Europe and other foreign jurisdictions to extend the term of a
 patent that covers an approved drug. In the future, if and when our products receive FDA approval, we expect to apply for patent term extensions on patents covering those products. We plan to seek patent term extensions to any of our issued
 patents in any jurisdiction where these are available, however there is no guarantee that the applicable authorities, including the FDA in the United States, will agree with our assessment of whether such extensions should be granted, and if
 granted, the length of such extensions. For more information regarding the risks related to our intellectual property, see "Risk Factors—Risks Related to Our Intellectual Property."

 Other U.S. Healthcare Laws and Compliance Requirements

 In the United States, PDS Biotech's activities are potentially subject to regulation, either directly or indirectly, by various federal, state and local authorities in
 addition to the FDA, including but not limited to, the Centers for Medicare and Medicaid Services, or CMS, other divisions of the U.S. Department of Health and Human Services, for instance the Office of Inspector General (OIG), the U.S.
 Department of Justice (DOJ), and individual U.S. Attorney offices within the DOJ, and state and local governments. For example, sales, marketing and scientific/educational grant programs must comply with the anti-fraud and abuse provisions of
 the Social Security Act, the criminal provisions of the Health Insurance Portability and Accountability Act of 1996 (HIPAA), the federal Anti-Kickback Statute, the federal false claims laws, the physician payment transparency laws, and similar
 state laws, each as amended. The compliance and enforcement landscape, and related risk, is informed by government enforcement precedent and settlement history, Advisory Opinions, and Special Fraud Alerts. Our approach to compliance may evolve
 over time in light of these types of developments.

 The federal Anti-Kickback Statute prohibits, among other things, any person or entity, from knowingly and willfully offering, paying, soliciting or receiving any
 remuneration, directly or indirectly, overtly or covertly, in cash or in kind, to induce or in return for purchasing, leasing, ordering or arranging for the purchase, lease or order of any item or service reimbursable under Medicare, Medicaid
 or other federal healthcare programs. The term remuneration has been interpreted broadly to include anything of value. The Anti-Kickback Statute has been interpreted to apply to arrangements between pharmaceutical manufacturers on one hand and
 prescribers, purchasers, and formulary managers on the other. There are a number of statutory exceptions and regulatory safe harbors protecting some common activities from prosecution. The exceptions and safe harbors are drawn narrowly and
 practices that involve remuneration that may be alleged to be intended to induce prescribing, purchasing or recommending may be subject to scrutiny if they do not qualify for an exception or safe harbor. Failure to meet all of the requirements
 of a particular applicable statutory exception or regulatory safe harbor, however, does not make the conduct per se illegal under the Anti-Kickback Statute. Instead, the legality of the arrangement will be evaluated on a case-by-case basis
 based on a cumulative review of all of its facts and circumstances. PDS Biotech's practices may not in all cases meet all of the criteria for protection under a statutory exception or regulatory safe harbor. The lack of uniform court
 interpretation of the Anti-Kickback Statute combined with emerging, novel enforcement theories, makes compliance with the law difficult. The potential safe harbors available are subject to change through legislative and regulatory action, and
 we may decide to adjust our business practices or be subject to heightened scrutiny as a result. Violations of the federal Anti-Kickback Statute can result in significant criminal fines, exclusion from participation in Medicare and Medicaid and
 follow-on civil litigation, among other things, for both entities and individuals.

 Additionally, the intent standard under the Anti-Kickback Statute was amended by the Affordable Care Act to a stricter standard such that a person or entity no longer needs
 to have actual knowledge of the statute or specific intent to violate it in order to have committed a violation. In addition, the Affordable Care Act codified case law that a claim including items or services resulting from a violation of the
 federal Anti-Kickback Statute constitutes a per se false or fraudulent claim for purposes of the federal False Claims Act, as discussed below.

 The Criminal Healthcare Fraud statute, 18 U.S.C. § 1347 prohibits knowingly and willfully executing a scheme to defraud any healthcare benefit program, including private
 third-party payers. Federal criminal law at 18 U.S.C. § 1001, among other sections, prohibits knowingly and willfully falsifying, concealing or covering up a material fact or making any materially false, fictitious or fraudulent statement in
 connection with the delivery of or payment for healthcare benefits, items or services.

 The civil monetary penalties statute imposes penalties against any person or entity that, among other things, is determined to have presented or caused to be presented a
 claim to a federal health program that the person knows or should know is for an item or service that was not provided as claimed or is false or fraudulent. The Federal Civil Monetary Penalties Law authorizes the imposition of substantial civil
 monetary penalties against an entity, such as a pharmaceutical manufacturer, that engages in activities including, among others (1) knowingly presenting, or causing to be presented, a claim for services not provided as claimed or that is
 otherwise false or fraudulent in any way; (2) arranging for or contracting with an individual or entity that is excluded from participation in federal healthcare programs to provide items or services reimbursable by a federal healthcare program;
 (3) violations of the federal Anti-Kickback Statute; or (4) failing to report and return a known overpayment.

 The federal False Claims Act prohibits, among other things, any person or entity from knowingly presenting, or causing to be presented, a false claim for payment to, or approval
 by, the federal government or knowingly making, using, or causing to be made or used a false record or statement material to a false or fraudulent claim to the federal government. The qui tam provisions
 of the False Claims Act and similar state laws allow a private individual to bring civil actions on behalf of the federal or state government and to share in any monetary recovery. As a result of a modification made by the Fraud Enforcement and
 Recovery Act of 2009, a claim includes "any request or demand" for money or property presented to the U.S. government, whether directly or indirectly. Recently, several pharmaceutical and other healthcare companies have been prosecuted under
 these laws for allegedly providing free product to customers with the expectation that the customers would bill federal programs for the product.

 Other companies have been prosecuted for causing false claims to be submitted because of the companies' marketing of the product for unapproved, and thus non-reimbursable,
 uses.

 HIPAA created new federal criminal statutes that prohibit knowingly and willfully executing, or attempting to execute, a scheme to defraud or to obtain, by means of false
 or fraudulent pretenses, representations or promises, any money or property owned by, or under the control or custody of, any healthcare benefit program, including private third-party payors and knowingly and willfully falsifying, concealing or
 covering up by trick, scheme or device, a material fact or making any materially false, fictitious or fraudulent statement in connection with the delivery of or payment for healthcare benefits, items or services. Similar to the federal
 Anti-Kickback Statute, a person or entity does not need to have actual knowledge of the statute or specific intent to violate it in order to have committed a violation.

 Also, many states have enacted similar fraud and abuse statutes or regulations that apply to items and services reimbursed under Medicaid and other state programs, or, in
 several states, apply regardless of the payor, even extending to self-pay items and services.

 PDS Biotech may be subject to data privacy and security regulations by both the federal government and the states in which it conducts its business. We are not a covered
 entity under HIPAA and have not functioned as a business associate under HIPAA that would cause the HIPAA Security Rule and provisions of the Privacy Rule to apply directly to us as a business associate. To the extent that we ever function in
 a business associate capacity, HIPAA, as amended by the HITECH Act, and its respective implementing regulations, including the final omnibus rule published on January 25, 2013, imposes requirements relating to the privacy, security and
 transmission of individually identifiable health information. Following enactment of the HITECH Act, HIPAA's privacy and security standards now directly apply to business associates of covered entities that receive or obtain protected health
 information in connection with providing a service on behalf of a covered entity. HITECH also created four new tiers of civil monetary penalties, gave state attorneys general new authority to file civil actions for damages or injunctions in
 federal courts to enforce the federal HIPAA laws and seek attorneys' fees and costs associated with pursuing federal civil actions. In addition, state laws govern the privacy and security of health information in specified circumstances, many
 of which differ from each other in significant ways, and may apply more broadly thus complicating compliance efforts (for example, California recently enacted legislation — the California Consumer Privacy Act, or CCPA-which went into effect on
 January 1, 2020 and among other things, creates new data privacy obligations for covered companies and provides new privacy rights to California residents, including the right to opt out of certain disclosures of their information, and creates
 a private right of action with statutory damages for certain data breaches). The CCPA was recently amended by the California Privacy Rights Act, or CPRA, expanding certain consumer rights such as the right to know. It remains unclear what, if
 any, additional modifications will be made to these laws by the California legislature or how these laws will be interpreted and enforced. The potential effects of the CCPA and CPRA and implementing regulations are significant and may cause us
 to incur substantial costs and expenses to comply.

 Even for entities that are not deemed "covered entities" or "business associates" under HIPAA, according to the United States Federal Trade Commission, or the FTC, failing to
 take appropriate steps to keep consumers' personal information secure constitutes unfair acts or practices in or affecting commerce in violation of Section 5(a) of the Federal Trade Commission Act, or the FTCA, 15 USC § 45(a). The FTC expects a
 company's data security measures to be reasonable and appropriate in light of the sensitivity and volume of consumer information it holds, the size and complexity of its business, and the cost of available tools to improve security and reduce
 vulnerabilities. Medical data is considered sensitive data that merits stronger safeguards. The FTC's guidance for appropriately securing consumers' personal information is similar to what is required by the HIPAA Security Rule. The FTC's
 authority under Section 5 is concurrent with HIPAA's jurisdiction and with any action taken under state law.

 Additionally, the Federal Physician Payments Sunshine Act under the Affordable Care Act, and its implementing regulations, require that certain manufacturers of drugs,
 devices, biological and medical supplies for which payment is available under Medicare, Medicaid or the Children's Health Insurance Program, with certain exceptions, report information related to certain payments or other transfers of value
 made or distributed to physicians and teaching hospitals, or to entities or individuals at the request of, or designated on behalf of, the physicians and teaching hospitals and to report annually certain ownership and investment interests held
 by physicians and their immediate family members. Failure to timely, accurately, and completely submit the required information may result in civil monetary penalties of up to an aggregate of $150,000 per year and up to an aggregate of $1
 million per year for "knowing failures". In 2022 the Sunshine Act reporting will be extended to payments and transfers of value to physician assistants, nurse practitioners, and other mid-level practitioners (with reporting requirements going
 into effect in 2022 for payments made in 2021). Certain states also mandate implementation of compliance programs, impose restrictions on pharmaceutical manufacturer marketing practices and/or require the tracking and reporting of gifts,
 compensation and other remuneration to healthcare providers and entities.

 In order to distribute products commercially, PDS Biotech must also comply with state laws that require the registration of manufacturers and wholesale distributors of drug
 and biological products in a state, including, in certain states, manufacturers and distributors who ship products into the state even if such manufacturers or distributors have no place of business within the state. Several states have enacted
 legislation requiring pharmaceutical and biotechnology companies to establish marketing compliance programs, file periodic reports with the state, make periodic public disclosures on sales, marketing, pricing, clinical studies and other
 activities, and/or register their sales representatives, as well as to prohibit pharmacies and other healthcare entities from providing certain physician prescribing data to pharmaceutical and biotechnology companies for use in sales and
 marketing, and to prohibit certain other sales and marketing practices. All of PDS Biotech's activities are potentially subject to federal and state consumer protection and unfair competition laws.

 We expect that one or more of our products, if approved, may be eligible for coverage under Medicare, the federal health care program that provides health care benefits to
 the aged and disabled, including coverage for outpatient services and supplies, such as certain drug products, that are medically necessary to treat a beneficiary's health condition. In addition, one or more of our products, if approved, may be
 covered and reimbursed under other federal health care programs, such as Medicaid and the 340B Drug Pricing Program. The Medicaid Drug Rebate Program requires pharmaceutical manufacturers to enter into and have in effect a national rebate
 agreement with the Secretary of the Department of Health and Human Services and pay quarterly rebates based on utilization of a manufacturer's covered outpatient drugs under the program as a condition for states to receive federal matching
 funds for a manufacturer's covered outpatient drugs furnished to Medicaid patients and in order for payment to be available for a manufacturer's drugs under Medicare Part B. Pharmaceutical manufacturers are also required to participate in the
 340B Drug Pricing Program in order for payment to be available for a manufacturer's drugs under Medicaid and Medicare Part B. Under the 340B Drug Pricing Program, a manufacturer must charge no more than the 340B "ceiling price" for its covered
 outpatient drugs purchased by statutorily defined covered entities that participate in the program.

 In addition, federal law requires that, in order for payment to be available for a manufacturer's drugs under Medicaid and Medicare Part B, as well as to be purchased by
 certain federal agencies and grantees, it must also participate in the Department of Veterans Affairs ("VA") Federal Supply Schedule ("FSS") pricing program. To participate, manufacturers are required to enter into an FSS contract and other
 agreements with the VA for their covered drugs. Under these agreements, manufacturers must make their covered drugs available to the "Big Four" federal agencies— the VA, the Department of Defense ("DoD"), the Public Health Service (including
 the Indian Health Service), and the Coast Guard—at pricing that is capped pursuant to a statutory federal ceiling price, or FCP, formula. The FCP is based on a weighted average non-federal average manufacturer price, which manufacturers are
 required to report on a quarterly and annual basis to the VA. Further, pursuant to regulations issued by the DoD to implement Section 703 of the National Defense Authorization Act for Fiscal Year 2008, manufacturers may enter into an agreement
 with the Defense Health Agency (DHA) under which they agree to honor "Big Four" pricing for their covered drugs when they are dispensed to TRICARE beneficiaries by TRICARE retail network pharmacies.

 As part of the requirements to participate in these government programs, many pharmaceutical manufacturers must calculate and report certain price reporting metrics to the
 government, such as average manufacturer price, best price, average sales price, and non-federal average manufacturer price. The calculations can be complex and are often subject to interpretation by manufacturers, governmental or regulatory
 agencies and the courts. Governmental agencies may also make changes in program interpretations, requirements, or conditions of participation, some of which may have implications for amounts previously estimated or paid. Any failure to comply
 with these price reporting and rebate payment obligations, when applicable, could negatively impact our financial results. Civil monetary penalties can be applied if a manufacturer is found to have knowingly submitted any false price
 information to the government, if a manufacturer is found to have made a misrepresentation in the reporting of its average sales price, or if a manufacturer fails to submit the required price data on a timely basis. Such conduct also could be
 grounds for CMS to terminate a manufacturer's Medicaid drug rebate agreement, in which case federal payments may not be available under Medicaid or Medicare Part B for a manufacturer's covered outpatient drugs and may provide a basis for other
 potential liability under other federal laws such as the False Claims Act.

 Efforts to ensure that our business arrangements with third parties will comply with applicable healthcare laws and regulations will involve substantial costs. It is
 possible that governmental authorities will conclude that our business practices may not comply with current or future statutes, regulations, guidance, case law or other applicable law. If our operations are found to be in violation of any of
 these laws or any other governmental regulations that may apply to us, we may be subject to significant civil, criminal and administrative penalties, damages, fines, individual imprisonment, exclusion from participation in federal health care
 programs, such as Medicare and Medicaid, disgorgement, reputational harm, additional oversight and reporting obligations pursuant to a corporate integrity agreement or similar agreement to resolve allegations of non-compliance with applicable
 laws and regulations, and the curtailment or restructuring of our operations, any of which could adversely affect our ability to market our products, if approved, and adversely impact our financial results. Although effective compliance
 programs can mitigate the risk of investigation and prosecution for violations of these laws and regulations, these risks cannot be eliminated entirely. Any action against us for an alleged or suspected violation could cause us to incur
 significant legal expenses and could divert our management's attention from the operation of our business, even if our defense is successful. If any of the physicians or other healthcare providers or entities with whom we expect to do business
 is found not to be in compliance with applicable laws, it may be costly to us in terms of money, time and resources, and they may be subject to criminal, civil or administrative sanctions, including exclusions from government-funded healthcare
 programs.

 The scope and enforcement of each of these laws is uncertain and subject to rapid change in the current environment of healthcare reform, especially in light of the lack of
 applicable precedent and regulations. Federal and state enforcement bodies have recently increased their scrutiny of interactions between pharmaceutical companies and providers and patients, which has led to a number of investigations,
 prosecutions, convictions and settlements in the industry. Ensuring that business arrangements with third parties comply with applicable healthcare laws, as well as responding to possible investigations by government authorities, can be time-
 and resource-consuming and can divert management's attention from the business, even if investigators ultimately find that no violation has occurred.

 If PDS Biotech operations are found to be in violation of any of the federal and state healthcare laws described above or any other governmental regulations that applies to
 it, PDS Biotech may be subject to penalties, including without limitation, civil, criminal and/or administrative penalties; damages; fines; disgorgement; exclusion from participation in government programs, such as Medicare and Medicaid;
 injunctions; private "qui tam" actions brought by individual whistleblowers in the name of the government, or refusal to allow it to enter into government contracts; contractual damages; reputational harm; administrative burdens; diminished
 profits and future earnings; and the curtailment or restructuring of its operations; any of which could adversely affect PDS Biotech's ability to operate its business and its results of operations.

 In addition to the laws discussed above, we may see more stringent state and federal privacy legislation in the future, as the increased instances of cyber-attacks have
 heightened attention to data privacy and security in the U.S. and other jurisdictions. We cannot predict where new legislation might arise, the scope of such legislation, or the potential impact to our business and operations.

 Coverage, Pricing and Reimbursement

 Significant uncertainty exists as to the coverage and reimbursement status of any product candidates for which PDS Biotech obtains regulatory approval. In the United States
 and markets in other countries, sales of any products for which PDS Biotech receives regulatory approval for commercial sale will depend, in part, on the extent to which third-party payors provide coverage, and establish adequate reimbursement
 levels for such products. In the United States, third-party payors include federal and state healthcare programs, private managed care providers, health insurers and other organizations. The process for determining whether a third-party payor
 will provide coverage for a product may be separate from the process for setting the price of a product or for establishing the reimbursement rate that such a payor will pay for the product. Third-party payors may limit coverage to specific
 products on an approved list, also known as a formulary, which might not include all of the FDA-approved products for a particular indication. Third-party payors are increasingly challenging the price, examining the medical necessity, and
 reviewing the cost-effectiveness of medical products, therapies and services, in addition to questioning their safety and efficacy. PDS Biotech may need to conduct expensive pharmaco-economic studies in order to demonstrate the medical necessity
 and cost-effectiveness of its product candidates, in addition to the costs required to obtain the FDA approvals. PDS Biotech's product candidates may not be considered medically necessary or cost-effective. A payor's decision to provide coverage
 for a product does not imply that an adequate reimbursement rate will be approved. No uniform policy requirement for coverage and reimbursement exists among third-party payors in the United States, which causes significant uncertainty related to
 the insurance coverage and reimbursement of newly approved products, and the procedures which may utilize such newly approved products. Further, one payor's determination to provide coverage for a product does not assure that other payors will
 also provide coverage for the product. Therefore, coverage and reimbursement can differ significantly from payor to payor and health care provider to health care provider. As a result, the coverage determination process is often a time-consuming
 and costly process that requires the provision of scientific and clinical support for the use of new products to each payor separately, with no assurance that coverage and adequate reimbursement will be applied consistently or obtained in the
 first instance. Adequate third-party reimbursement may not be available to enable PDS Biotech to maintain price levels sufficient to realize an appropriate return on its investment in product development.

 Different pricing and reimbursement schemes exist in other countries. Some jurisdictions operate positive and negative list systems under which products may only be
 marketed once a reimbursement price has been agreed. To obtain reimbursement or pricing approval, some of these countries may require the completion of clinical studies that compare the cost-effectiveness of a particular product candidate to
 currently available therapies. Other countries allow companies to fix their own prices for medicines, but monitor and control company profits. The downward pressure on health care costs has become very intense. As a result, increasingly high
 barriers are being erected to the entry of new products. In addition, in some countries, cross-border imports from low-priced markets exert a commercial pressure on pricing within a country.

 The marketability of any product candidates, for which it receives regulatory approval for commercial sale may suffer if the government and third-party payors fail to provide
 adequate coverage and reimbursement or require onerous prior approvals or other restricted access. In addition, emphasis on managed care in the United States has increased and PDS Biotech expects the pressure on healthcare pricing will continue
 to increase. Coverage policies and third-party reimbursement rates may change at any time. Even if favorable coverage and reimbursement status is attained for one or more products for which PDS Biotech receives regulatory approval, less favorable
 coverage policies and reimbursement rates may be implemented in the future.

 There may be significant delays in obtaining coverage and reimbursement for newly approved products, and coverage may be more limited than the purposes for which the product
 is approved by the FDA. Moreover, eligibility for coverage and reimbursement does not imply that a product, or the procedures which utilize such product, will be paid for in all cases or at a rate which the health care providers who purchase
 those products will find cost effective. Additionally, we expect pricing pressures in connection with the sale of any of our product candidates due to the trend toward managed healthcare, the increasing influence of health maintenance
 organizations, and additional legislative changes.

 We cannot be sure that coverage and reimbursement will be available for any product that we commercialize, or the procedures which utilize such product, and, if reimbursement
 is available, what the level of reimbursement will be. Coverage and reimbursement may impact the demand for, or the price of, any product candidate for which we obtain marketing approval. If coverage and reimbursement are not available or
 reimbursement is available only to limited levels, we may not successfully commercialize any product candidate for which we obtain marketing approval.

 U.S. Healthcare Reform

 In recent years, there have been numerous initiatives on the federal and state levels in the United States for comprehensive reforms.

 In the United States and some foreign jurisdictions, there have been and continue to be a number of legislative and regulatory changes and proposed changes regarding the
 healthcare system that could prevent or delay marketing approval of our product candidates, restrict or regulate post-approval activities and affect our ability, or the ability of our future collaborators, to effectively sell any drugs for
 which we, or they, obtain marketing approval. We expect that current laws, as well as other healthcare reform measures that may be adopted in the future, may result in more rigorous coverage criteria and additional downward pressure on the
 price that we, or our future collaborators, may receive for any approved drugs. For example, the Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act (collectively, "PPACA") has
 substantially changed and continues to impact healthcare financing and delivery by both government payors and private insurers. Among the PPACA provisions of importance to the pharmaceutical industry, in addition to those otherwise described
 above, are the following:

 an annual, nondeductible fee on any entity that manufactures or imports specified branded prescription drugs and biologic agents, apportioned among these entities according to their market share in
 certain federal programs identified in the PPACA;

 expansion of beneficiary eligibility criteria for Medicaid programs by, among other things, allowing states to offer Medicaid coverage to certain individuals with income at or below 138% of the federal
 poverty level, thereby potentially increasing manufacturers' Medicaid rebate liability;

 expansion of manufacturers' rebate liability under the Medicaid Drug Rebate Program by increasing the minimum rebate for both branded and generic drugs and revising the definition of "average manufacturer
 price" for calculating and reporting Medicaid drug rebates on outpatient prescription drug prices;

 extension of manufacturers' Medicaid rebate liability to covered drugs dispensed to individuals who are enrolled in Medicaid managed care organizations;

 a separate 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 the types of entities eligible for the 340B drug discount program;

 establishment of the Medicare Part D coverage gap discount program that, as a condition for the manufacturers outpatient drugs to be covered under Medicare Part D, requires manufacturers to provide a now
 70% point-of-sale-discount off the negotiated price of applicable brand drugs to eligible beneficiaries during their coverage gap period;

 establishment of the Center for Medicare and Medicaid Innovation within the Centers for Medicare and Medicaid Services to test innovative payment and service delivery models to lower Medicare and Medicaid
 spending, potentially including prescription drug spending;

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

 reporting of certain financial arrangements between manufacturers of drugs, biologics, devices, and medical supplies and physicians and teaching hospitals under the Physician Payments Sunshine Act; and

 annual reporting of certain information regarding drug samples that manufacturers and distributors provide to licensed practitioners.

 The framework of the PPACA continues to evolve as a result of executive, legislative, regulatory, and administrative developments that have challenged the law and
 contribute to legal uncertainty that could affect the profitability of our products. While the United States Congress has not enacted legislation to comprehensively repeal the PPACA, legislation affecting the PPACA has been signed into law,
 including the elimination, effective January 1, 2019, of the tax-based shared responsibility payment imposed by the PPACA on certain individuals who fail to maintain qualifying health coverage for all or part of a year, which is commonly
 referred to as the "individual mandate." In December 2018, a federal district court in Texas ruled that the PPACA's individual mandate, without the penalty that was eliminated effective January 1, 2019, was unconstitutional and could not be
 severed from the PPACA. As a result, the court ruled the remaining provisions of the PPACA were also invalid. The Fifth Circuit Court of Appeals affirmed the district court's ruling that the individual mandate was unconstitutional, but it
 remanded the case back to the district court for further analysis of whether the mandate could be severed from the PPACA (i.e., whether the entire PPACA was therefore also unconstitutional). On June 17, 2021, the U.S. Supreme Court dismissed
 this challenge without specifically ruling on the constitutionality of the PPACA.

 Effective January 1, 2019, the Bipartisan Budget Act of 2018, among other things, further amended portions of the Social Security Act implemented as part of the PPACA to
 increase from 50% to 70% the point-of-sale discount that pharmaceutical manufacturers participating in the Coverage Gap Discount Program must provide to eligible Medicare Part D beneficiaries during the coverage gap phase of the Part D benefit,
 commonly referred to as the "donut hole," and to reduce standard beneficiary cost sharing in the coverage gap from 30% to 25% in most Medicare Part D plans. In addition, the Further Consolidated Appropriations Act of 2020, signed into law
 December 20, 2019, fully repealed the PPACA's "Cadillac Tax" on certain high-cost employer-sponsored insurance plans (for tax years beginning after December 31, 2019), the annual fee imposed on certain health insurance providers based on market
 share (for calendar year 2021), and the medical device excise tax on non-exempt medical devices (for sales after December 31, 2019). In the future, there may be additional challenges and/or amendments to the PPACA. It remains to be seen
 precisely what any new legislation will provide, when or if it will be enacted, and what impact it will have on the availability and cost of healthcare items and services, including drug products.

 In addition, other legislative changes have been proposed and adopted since the PPACA was enacted. For example, the Budget Control Act of 2011, among other things, resulted
 in reductions in payments to Medicare providers of 2% per fiscal year, which went into effect on April 1, 2013 and, due to subsequent legislation, will remain in effect through 2031, with the exception of a temporary suspension of the payment
 reduction which occurred from May 1, 2020 through March 31, 2022 due to the coronavirus pandemic. Sequestration started again on April 1, 2022. From April 1, 2022 to June 30, 2022, payment for Medicare fee-for-service claims was adjusted
 downwards by 1%; beginning on July 1, 2022, the payment was adjusted downwards by 2%. In addition, on March 11, 2021, President Biden signed the American Rescue Plan Act of 2021 into law, which eliminates the statutory Medicaid drug rebate cap,
 currently set at 100% of a drug's average manufacturer price, for single source and innovator multiple source drugs, beginning January 1, 2024. Further, the American Taxpayer Relief Act of 2012, among other things, reduced CMS payments to
 several providers, including hospitals, and increased the statute of limitations period for the government to recover Medicare overpayments to providers from three to five years. These legislative changes may result in additional reductions in
 Medicare and other healthcare funding and otherwise affect the prices we may obtain for any of our product candidates for which we may obtain regulatory approval or the frequency with which any such product candidate is prescribed or used.

 Recently, the cost of prescription pharmaceuticals has been the subject of considerable discussion in the United States. Congress considered and passed legislation, and the
 former Trump administration pursued several regulatory reforms to further increase transparency around prices and price increases, lower out-of-pocket costs for consumers, and decrease spending on prescription drugs by government programs.
 Congress also continued to conduct inquiries into the prescription drug industry's pricing practices. While several proposed reform measures will require Congress to pass legislation to become effective, Congress and the Biden administration
 have each indicated that it will continue to seek new legislative and/or administrative measures to address prescription drug costs. The Biden administration has taken several recent executive actions that signal changes in policy from the
 prior administration. For example, on July 9, 2021, President Biden signed an executive order to promote competition in the U.S. economy that included several initiatives addressing prescription drugs. Among other provisions, the executive
 order directed the Secretary of HHS to issue a report to the White House within 45 days that includes a plan to, among other things, reduce prices for prescription drugs, including prices paid by the federal government for such drugs. In
 response to the Executive Order, on September 9, 2021, HHS issued a Comprehensive Plan for Addressing High Drug Prices that identified potential legislative policies and administrative tools that Congress and the agency can pursue in order to
 make drug prices more affordable and equitable, improve and promote competition throughout the prescription drug industry, and foster scientific innovation. Additionally, on February 2, 2022, the Biden Administration signaled its continued
 commitment to the Cancer Moonshot initiative, which was initially launched in 2016. In its recent announcement, the administration noted that its new goals under the initiative include addressing inequities in order to ensure broader access to
 cutting-edge cancer therapeutics and investing in a robust pipeline for new treatments. At the state level, legislatures are increasingly passing legislation and states are implementing regulations designed to control spending and patient
 out-of-pocket costs for drug products. Implementation of cost containment measures or other healthcare reforms that affect the pricing and/or availability of drug products may impact our ability to generate revenue, attain or maintain
 profitability, or commercialize products for which we may receive regulatory approval in the future.

 Most recently, on August 16, 2022 the Inflation Reduction Act of 2022, or IRA was signed into law. Among other things, the IRA requires manufacturers of certain drugs to
 engage in price negotiations with Medicare (beginning in 2026), with prices that can be negotiated subject to a cap; imposes rebates under Medicare Part B and Medicare Part D to penalize price increases that outpace inflation (first due in
 2023); and replaces the Part D coverage gap discount program with a new discounting program (beginning in 2025). The IRA permits the Secretary of the Department of Health and Human Services (HHS) to implement many of these provisions through
 guidance, as opposed to regulation, for the initial years. For that and other reasons, it is currently unclear how the IRA will be effectuated, and the impact of the IRA on the pharmaceutical industry cannot yet be fully determined.

 We expect that these and other healthcare reform measures that may be adopted in the future may result in more rigorous coverage criteria and/or new payment methodologies,
 and place additional downward pressure on the price that we receive for any approved product and/or the level of reimbursement physicians and other healthcare providers receive for administering any approved product we might bring to market.
 Reductions in reimbursement levels and imposition of more rigorous coverage criteria or new payment methodologies may negatively impact the prices we receive or the frequency with which our products are prescribed or administered. Any coverage
 or reimbursement policies instituted by Medicare or other federal health care programs may result in similar policies from private payors. The implementation of cost containment measures or other healthcare reforms may affect our ability to
 generate revenue, attain or maintain profitability, or commercialize our drug candidates. We expect that additional state and federal healthcare reform measures will be adopted in the future, any of which could limit the amounts that federal
 and state governments will pay for healthcare products and services, which could result in reduced demand for our drug candidates or additional pricing pressures.

 At the state level, legislatures have increasingly passed legislation and implemented 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.
 In addition, regional health care 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 health care
 programs. These measures could reduce the ultimate demand for our products or put pressure on our product pricing. We expect that additional state healthcare reform measures will be adopted in the future, which could limit the amounts that state
 governments will pay for healthcare products and services and result in additional pricing pressures. The boom in state laws targeting drug pricing is unprecedented and the requirements are not uniform from state to state, creating additional
 compliance and commercialization challenges for manufacturers. If PDS Biotech is able to obtain marketing approval for one or more of our products, our revenue and future profitability could be negatively affected if these or other inquiries were
 to result in legislative or regulatory proposals that limit our ability to increase the prices of any products for which we obtain marketing approval.

 Foreign Regulation

 In order to market any product outside of the United States, we would need to comply with numerous and varying regulatory requirements of other countries and jurisdictions
 regarding quality, safety and efficacy and governing, among other things, clinical studies, marketing authorization, commercial sales and distribution of its products. Whether or not PDS Biotech obtains FDA approval for a product, it would need
 to obtain the necessary approvals by the comparable foreign regulatory authorities before it can commence clinical studies or marketing of the product in foreign countries and jurisdictions. Although many of the issues discussed above with
 respect to the United States apply similarly in the context of the European Union, the approval process varies between countries and jurisdictions and can involve additional product testing and additional administrative review periods. The time
 required to obtain approval in other countries and jurisdictions might differ from and be longer than that required to obtain FDA approval. Regulatory approval in one country or jurisdiction does not ensure regulatory approval in another, but a
 failure or delay in obtaining regulatory approval in one country or jurisdiction may negatively impact the regulatory process in others.

 European Union member states and other foreign jurisdictions, including Switzerland, have adopted data protection laws and regulations which impose significant compliance
 obligations. Moreover, the collection and use of personal health data in the European Union, which was formerly governed by the provisions of the European Union Data Protection Directive, was replaced with the European Union General Data
 Protection Regulation, or the GDPR, in May 2018. The GDPR, which is wide-ranging in scope, imposes several requirements relating to the consent of the individuals to whom the personal data relates, the information provided to the individuals, the
 security and confidentiality of the personal data, data breach notification and the use of third-party processors in connection with the processing of personal data. The GDPR also imposes strict rules on the transfer of personal data out of the
 European Union to the United States, provides an enforcement authority and imposes large penalties for noncompliance, including the potential for fines of up to 20 million or 4% of the annual global revenues of the noncompliant company,
 whichever is greater. The recent implementation of the GDPR has increased our responsibility and liability in relation to personal data that we process, including in clinical trials, and we may in the future be required to put in place additional
 mechanisms to ensure compliance with the GDPR, which could divert management's attention and increase our cost of doing business. In addition, new regulation or legislative actions regarding data privacy and security (together with applicable
 industry standards) may increase our costs of doing business. In this regard, we expect that there will continue to be new proposed laws, regulations and industry standards relating to privacy and data protection in the United States, the
 European Union and other jurisdictions, and we cannot determine the impact such future laws, regulations and standards may have on our business.

 Employees and Human Capital Management

 Our management team possesses considerable experience in drug development research, manufacturing, clinical development and regulatory matters. PDS Biotech's virtual
 operating strategy of collaborating with scientific and clinical experts in cancer immunology, tumor immunology and gynecological oncology provides additional considerable experience in immunotherapy development, clinical design and execution.
 We have no collective bargaining agreements with our employees, and we have not experienced any work stoppages.

 As of December 31, 2023, we had 25 employees, all of whom were full time employees. Our employees are highly skilled, and many hold advanced degrees. We consider our
 relationship with our employees to be good. Our future performance depends significantly upon the continued service of our key scientific, technical, and senior management personnel and our continued ability to attract and retain highly skilled
 employees. We provide our employees with market salaries and bonuses, opportunities for equity ownership, development programs that enable continued learning and growth and a robust employment package that promotes well-being across all aspects
 of their lives. In addition to salaries, these programs include potential annual discretionary bonuses, stock awards, a 401(k) plan, healthcare and insurance benefits, health savings and flexible spending accounts, paid time off, family leave,
 and flexible work schedules, among other benefits.

 Environmental Regulations

 We believe we are compliant in all material respects with applicable environmental laws. Presently, we do not anticipate such compliance will have a material effect on
 capital expenditures, earnings, or our competitive position with respect to any of our operations.

 ITEM 1A.

 Risk Factors

 The risks described below may not be the only ones relating to our company. Additional risks that we currently believe are immaterial may also impair our
 business operations. Our business, financial conditions and future prospects and the trading price of our common stock could be harmed as a result of any of these risks. Investors should also refer to the other information contained or
 incorporated by reference in this Annual Report on Form 10-K, including our financial statements and related notes, and our other filings from time to time with the Securities and Exchange Commission or SEC.

 Risk Factors Summary

 Our business is subject to a number of risks and uncertainties, including those risks discussed at length below. These risks include, among others, the
 following principal risk factors that make an investment in our company speculative or risky. You are encouraged to carefully review our full discussion of the material risk factors relevant to an investment in our business, which follows the
 brief bulleted list of our principal risk factors set forth below:

 We have a limited operating history and have never generated any product revenue.

 We have incurred significant losses since our inception and expect to continue to incur significant losses for the foreseeable future and may never achieve or maintain
 profitability.

 We are dependent on the success of our Versamune and Infectimune products, which are still in early-stage clinical development, and if our Versamune and
 Infectimune products do not receive regulatory approval or are not successfully commercialized, our business may be harmed.

 We will require additional capital to fund our operations, and if we fail to obtain necessary financing, we may not be able to complete the development and
 commercialization of our Versamune and Infectimune based products.

 Raising additional funds by issuing securities may cause dilution to existing stockholders and raising funds through lending and licensing arrangements may restrict
 our operations or require us to relinquish proprietary rights.

 We will need to expand our organization, and may experience difficulties in managing this growth, which could disrupt operations.

 Our employees, independent contractors, principal investigators, consultants, commercial collaborators, service providers and other vendors may engage in misconduct
 or other improper activities, including noncompliance with regulatory standards and requirements, which could have an adverse effect on our results of operations.

 Our business and operations would suffer, and could be negatively affected, in the event of system failures or cyberattacks.

 If we fail to maintain an effective system of internal control over financial reporting in the future, we may not be able to accurately report our financial
 condition, results of operations or cash flows, which may adversely affect investor confidence in us and, as a result, the value of our common stock. Further, we continue to incur significant increased costs as a result of operating as
 a public company, and our management is required to devote substantial time to compliance initiatives.

 Periodic reporting requirements under the Exchange Act and compliance with the Sarbanes-Oxley Act of 2002, including establishing and maintaining acceptable internal
 control over financial reporting, are costly and may increase substantially and, as a smaller reporting company, we may take advantage of reduced reporting requirements which may make our common stock less attractive to investors.

 We have identified conditions and events that raise substantial doubt regarding our ability to continue as a going concern.

 Clinical trials are very expensive, time-consuming, difficult to design and implement and involve an uncertain outcome, and if they fail to demonstrate safety and
 efficacy to the satisfaction of the FDA, or similar regulatory authorities, we will be unable to commercialize Versamune, Versamune in combination with PDS01ADC and Infectimune based products.

 Enrollment and retention of subjects in clinical trials is an expensive and time-consuming process and could be made more difficult or rendered impossible by multiple
 factors outside our control.

 We face significant competition from other biotechnology and pharmaceutical companies, and our operating results will suffer if we fail to compete effectively.

 We rely, and intend to continue to rely, on third parties to conduct our clinical trials and perform some of our research and preclinical studies. If these third
 parties do not satisfactorily carry out their contractual duties, fail to comply with applicable regulatory requirements or do not meet expected deadlines, our development programs may be delayed or subject to increased costs or we may
 be unable to obtain regulatory approval, each of which may have an adverse effect on our business, financial condition, results of operations and prospects.

 Our product candidates are in various stages of development and we will not be able to commercialize our product candidates if our preclinical studies do not produce
 successful results and/or our clinical trials do not demonstrate the safety and efficacy of our product candidates; early results and early understanding of product candidate potential may not be predictive of later success.

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

 If we fail to comply with federal and state healthcare regulatory laws, including in our relationships with healthcare providers and customers and third-party payors,
 we could face criminal prosecution and sanctions, substantial civil penalties, damages, fines, disgorgement, exclusion from participation in governmental healthcare programs, contractual damages, reputational harm, and the curtailment of
 our operations, any of which could harm our business.

 If we are unable to establish sales, marketing and distribution capabilities either on our own or in collaboration with third parties, we may not be successful in
 commercializing PDS0101, PDS01ADC and other product candidates, if approved.

 If we obtain approval to commercialize PDS0101, PDS01ADC or other product candidates outside of the United States, a variety of risks associated with international
 operations could harm our business.

 Recently enacted and future healthcare legislation, regulations, and policy initiatives may increase the difficulty and cost for us to obtain marketing approval of
 and commercialize PDS0101, PDS01ADC or other product candidates and affect the prices we may obtain and our profitability.

 We have no manufacturing, sales, marketing or distribution capability and we must rely upon third parties for such.

 If we are unable to establish or manage strategic collaborations in the future, our revenue and drug development may be limited.

 Our business could be adversely affected by the effects of health epidemics, pandemics, or outbreaks of infectious diseases in regions where we or third parties on
 which we rely have significant manufacturing facilities, concentrations of clinical trial sites or other business operations.

 If we are unable to obtain and/or maintain patent protection for our Versamune, Versamune in combination with PDS01ADC platforms, PDS0101, or other
 Versamune or Infectimune based Products or if the scope of the patent protection obtained is not sufficiently broad, we may not be able to compete effectively in our markets.

 We may be involved in lawsuits to protect or enforce our patents, the patents of our licensors or our other intellectual property rights, or defend our
 products and methods against the property rights of others, which could be expensive, time consuming and unsuccessful.

 Our stock price is expected to be volatile, and the market price of our common stock may drop in the future.

 Our effective tax rate may increase in the future, including as a result of tax legislation changes, which may have a material adverse effect on our business,
 financial condition and results of operations.

 Risks Related to Our Business, Financial Position and Capital Requirements

 We have a limited operating history and have never generated any product revenue.

 We have no products approved for sale. We are a clinical-stage biopharmaceutical company with a limited operating history. Our operations to date have been limited to
 organizing our company and developing the Versamune platform and related immunotherapy product candidates that incorporate the technology of our Versamune platform. We have not yet successfully completed a large-scale, pivotal clinical trial,
 obtained marketing approval, manufactured Versamune at commercial scale, or conducted sales and marketing activities that will be necessary to successfully commercialize our Versamune products. Consequently, predictions about our future
 success or viability may not be as accurate as they could be if we had a longer operating history or a history of successfully developing and commercializing immunotherapies.

 Our product candidates will require additional clinical development, evaluation of clinical, preclinical and manufacturing activities, marketing approval in multiple
 jurisdictions, substantial investment and significant marketing efforts before we generate any revenues from product sales. We are not permitted to market or promote any of our product candidates before we receive marketing approval from the
 FDA and comparable foreign regulatory authorities, and we may never receive such marketing approvals.

 Our ability to generate revenue and achieve and maintain profitability will depend upon our ability to successfully complete the development of our Versamune based oncology
 products PDS0101, PDS0102, PDS0103, PDS0104 alone or in combination with PDS01ADC and Infectimune to treat infectious diseases and to obtain the necessary regulatory approvals. We have never generated any product revenue and have no
 immunotherapy candidate in late-stage clinical development or approved for commercial sale.

 Even if we receive regulatory approval for the sale of the Versamune, Versamune in combination with PDS01ADC and Infectimune Products, we do not know when we will begin
 to generate revenue from PDS0101 or other products, if at all. Our ability to generate revenue depends on a number of factors, including our ability to:

 set and obtain an acceptable price for Versamune based immunotherapy candidates, including Versamune in combination with PDS01ADC, and obtain coverage and adequate reimbursement from third-party payors;

 establish sales, marketing, manufacturing and distribution systems;

 add operational, financial and management information systems and personnel, including personnel to support our clinical, manufacturing and planned future clinical development and commercialization efforts and operations as a public company;

 develop manufacturing capabilities for bulk materials and manufacture commercial quantities of Versamune PDS0101, PDS01ADC and other Versamune products at acceptab le cost levels;

 achieve broad market acceptance of PDS0101 and other Versamune, Versamune in combination with PDS01ADC and Infectimune based-products in the medical community and with third-party payors and
 consumers;

 attract and retain an experienced management and advisory team;

 launch commercial sales of Versamune PDS0101 in combination with PDS01ADC and other oncology products, and Infectimune based-products, whether alone or in collaboration w ith others; and

 maintain, expand and protect our intellectual prop erty portfolio.

 Because of the numerous risks and uncertainties associated with immunotherapy development and manufacturing, we are unable to predict the timing or amount of increased
 development expenses, or when we will be able to achieve or maintain profitability, if at all. Our expenses could increase beyond expectations if we are required by the U.S. Food and Drug Administration, or FDA, or comparable non-U.S.
 regulatory authorities, to perform studies or clinical trials in addition to those we currently anticipate. Even if PDS0101 alone or in combination with PDS01ADC is approved for commercial sale, we anticipate incurring significant costs
 associated with the commercial launch of and the related commercial-scale manufacturing requirements for PDS0101, PDS01ADC, other Versamune and Infectimune products. If we cannot successfully execute on any of the factors listed above, our
 business may not succeed, and your investment will be adversely affected.

 We have incurred significant losses since our inception and expect to continue to incur significant losses for the foreseeable future and may never
 achieve or maintain profitability.

 We have never generated any product revenues and expect to continue to incur substantial and increasing losses as we continue to develop Versamune, Versamune in combination
 with PDS01ADC and Infectimune based products. None of our products have been approved for marketing in the United States and may never receive such approval. As a result, we are uncertain when or if we will achieve profitability and, if so,
 whether we will be able to sustain it. Our ability to generate revenue and achieve profitability is dependent on our ability to complete development, obtain necessary regulatory approvals, and have our products manufactured and successfully
 marketed. We cannot assure you that we will be profitable even if we successfully commercialize PDS0101, PDS01ADC or other Versamune and Infectimune based products. If we successfully obtain regulatory approval to market PDS0101 alone or in
 combination with PDS01ADC, our revenues will be dependent, in part, upon, the size of the markets in the territories for which regulatory approval is received, the number of competitors in such markets for the approved indication, and the price
 at which we can offer our products. If the indication approved by regulatory authorities is narrower than we expect, or the treatment population is narrowed by competition, physician choice or treatment guidelines, we may not generate significant
 revenue from sales of our products, even if approved. Even if we do achieve profitability, we may not be able to sustain or increase profitability on a quarterly or annual basis. If we fail to become and remain profitable the market price of our
 common stock and our ability to raise capital and continue operations will be adversely affected.

 We expect research and development expenses to increase significantly for Versamune, Versamune in combination with PDS01ADC and Infectimune based products. In addition,
 even if we obtain regulatory approval, significant sales and marketing expenses will be required to commercialize our products. As a result, we expect to continue to incur significant and increasing operating losses and negative cash flows for
 the foreseeable future. These losses have had and will continue to have an adverse effect on our financial position and working capital. As of December 31, 2023 and 2022, we had an accumulated deficit of $144.5 and $101.6 million, respectively.

 We are dependent on the success of our Versamune, PDS01ADC and Infectimune products, which are still in clinical development, and if our Versamune,
 PDS01ADC and Infectimune products do not receive regulatory approval or are not successfully commercialized, our business may be harmed.

 PDS0101 and PDS01ADC are in mid clinical development, and as a consequence, it is too early to determine whether our products will ever be approved for commercial sale or
 be marketable. We expect that a substantial portion of our efforts and expenditures over the next few years will be devoted to Versamune, Versamune in combination with PDS01ADC and Infectimune based products. Accordingly, our business
 currently depends heavily on the successful development, regulatory approval and commercialization of PDS0101 alone or in combination with PDS01ADC. PDS0101 and PDS01ADC may not receive regulatory approval or be successfully commercialized even
 if regulatory approval is received. The research, testing, manufacturing, labeling, approval, sale, marketing and distribution of PDS0101 and PDS01ADC is and will remain subject to extensive regulation by the FDA and other regulatory
 authorities in the United States and other countries that each have differing regulations. We are not permitted to market PDS0101 or PDS01ADC in the United States until it receives approval of a biologics license application, or BLA, from the
 FDA, or in any foreign countries until it receives the requisite approval from such countries. To date, we have only completed Phase 2 clinical trials for certain applications of PDS0101. As a result, we have not submitted a BLA to the FDA or
 comparable applications to other regulatory authorities and do not expect to be in a position to do so for the foreseeable future. Obtaining approval of a BLA is an extensive, lengthy, expensive and inherently uncertain process, and the FDA may
 delay, limit or deny approval of PDS0101 or PDS01ADC for many reasons, including:

 we may not be able to demonstrate that PDS0101 alone or in combination with PDS01ADC is safe and effective to the satisfaction of the FDA;

 the FDA may not agree that the completed Phase 2 clinical trials of PDS0101 and PDS01ADC satisfy the FDA's requirements and may require us to conduct addi tional testing;

 the results of our future clinical trials may not meet the level of statistical or clinical significance required by the FDA for mark eting approval;

 the FDA may disagree with the number, design, size, conduct or implementation of one or more of our c linical trials;

 the contract research organizations, or CROs, that we retain to conduct clinical trials may take actions outside of our control that materially and adversely impact our c linical trials;

 the FDA may not find the data from our preclinical studies and clinical trials sufficient to demonstrate that the clinical and other benefits of PDS0101 and PDS01ADC outweigh th e safety risks;

 the FDA may disagree with our interpretation of data from our preclinical studies and c linical trials;

 the FDA may not accept data generated at our clinic al trial sites;

 if our BLA is reviewed by an advisory committee, the FDA may have difficulties scheduling an advisory committee meeting in a timely manner or the advisory committee may recommend against approval of our application or may recommend
 that the FDA require, as a condition of approval, additional preclinical studies or clinical trials, limitations on approved labeling or distribution and us e restrictions;

 the FDA may require development of a risk evaluation and mitigation strategy, or REMS, as a conditi on of approval;

 the FDA may identify deficiencies in our manufacturing processes or facilities; or

 the FDA may change its approval policies or adopt n ew regulations.

 We will require additional capital to fund our operations, and if we fail to obtain necessary financing, we may not be able to complete the development
 and commercialization of our Versamune, PDSO1ADC and Infectimune based products.

 We expect to spend substantial amounts to complete the development of, seek regulatory approvals for and commercialize PDS0101 alone or in combination with PDS01ADC. Even
 with our current cash reserves, we will require substantial additional capital to complete the development and potential commercialization of PDS0101 and PDS01ADC and the development of other Versamune and Infectimune based products. If we
 are unable to raise capital or find appropriate partnering or licensing collaborations or other nondilutive financing, when needed or on acceptable terms, if at all, we could be forced to delay, reduce or eliminate one or more of our
 development programs or any future commercialization efforts. In addition, attempting to secure additional financing may divert the time and attention of our management from day-to-day activities and harm our development efforts.

 Our estimate as to what we will be able to accomplish is based on assumptions that may prove to be inaccurate, and we could exhaust our available capital resources sooner
 than is currently expected. Because the length of time and activities associated with successful development of PDS0101 and PDS01ADC is highly uncertain, we are unable to estimate the actual funds we will require for development and any
 approved marketing and commercialization activities. Our future funding requirements, both near and long-term, will depend on many factors, including, but not limited to:

 the initiation, progress, timing, costs and results of our planned clinical trials;

 the outcome, timing and cost of meeting regulatory requirements established by the FDA and other comparable foreign regulato ry authorities;

 the cost of filing, prosecuting, defending and enforcing our patent claims and other intellectual p roperty rights;

 the cost of defending potential intellectual property disputes, including any patent infringement actions brought by third parties against us now or in the future;

 the effect of competing technological and marke t developments;

 the cost of establishing sales, marketing and distribution capabilities in regions where we choose to commercialize PDS0101 and PDS01ADC on our own; and

 the initiation, progress, timing and results of the commercialization of PDS0101, if approved, for c ommercial sale.

 Additional funding may not be available on acceptable terms, or at all. If we are unable to raise additional capital in sufficient amounts or on terms acceptable to us, we
 may have to significantly delay, scale back or discontinue the development or commercialization of PDS0101 or potentially discontinue operations.

 Raising additional funds by issuing securities may cause dilution to existing stockholders and raising funds through lending and licensing arrangements
 may restrict our operations or require us to relinquish proprietary rights.

 We expect that significant additional capital will be needed in the future to continue our planned operations. Until such time, if ever, as we can generate substantial
 product revenues, we expect to finance our cash needs through a combination of equity offerings, debt financings, strategic alliances and license and development agreements in connection with any collaborations. In February 2020, we completed
 an underwritten public offering, in which we sold 10,000,000 shares of common stock at a public offering price of $1.30 per share. The shares sold included 769,230 shares issued upon the exercise by the underwriter of its option to purchase
 additional shares at the public offering price. We received gross proceeds of approximately $13 million and net proceeds of approximately $11.9 million after deducting underwriting discounts and commissions. In July 2020, we filed a shelf
 registration statement, or the 2020 Shelf Registration Statement, with the SEC, for the issuance of common stock, preferred stock, warrants, rights, debt securities and units, which we refer to collectively as the Shelf Securities, up to an
 aggregate amount of $100 million. The 2020 Shelf Registration Statement was declared effective on July 31, 2020. The 2020 Registration Statement was terminated upon effectiveness of the 2022 Registration Statement (as discussed below). On
 August 13, 2020, we sold 6,900,000 shares of our common stock at a public offering price of $2.75 per share pursuant to the 2020 Shelf Registration Statement, which includes 900,000 shares issued upon the exercise by the underwriter of its
 option to purchase additional shares at the public offering price, minus underwriting discounts and commissions. We received gross proceeds of approximately $19.0 million and net proceeds of approximately $17.1 million, after deducting
 underwriting discounts and offering expenses. In June 2021, we completed an underwritten public offering in which we sold 6,088,235 shares of common stock at a public offering price of $8.50 per share pursuant to the 2020 Shelf Registration
 Statement, which includes 794,117 shares issued upon the exercise by the underwriter of its option to purchase additional shares at the public offering price, minus underwriting discounts and commissions. We received gross proceeds of
 approximately $51.7 million and net proceeds of approximately $48.5 million, after deducting underwriting discounts and offering expenses.

 In August 2022, we filed a shelf registration statement, or the 2022 Shelf Registration Statement, with the SEC for the issuance of common stock, preferred stock, warrants,
 rights, debt securities, and units up to an aggregate amount of $150 million, $50 million of which covers the offer, issuance and sale by the Company of its common stock under the Sales Agreement (as discussed below). The 2022 Shelf
 Registration Statement was declared effective on September 2, 2022.

 In August 2022, we entered into an At Market Issuance Sales Agreement, or the Sales Agreement, with B. Riley Securities, Inc. and BTIG, LLC, each an Agent and collectively
 the Agents, with respect to an at-the-market offering program under which we may offer and sell, from time to time at our sole discretion, shares of our common stock, having an aggregate offering price of up to $50.0 million, or the Placement
 Shares, through or to the Agents, as sales agents or principals. Upon delivery of a placement notice and subject to the terms and conditions of the Sales Agreement, the Agents may sell the Placement Shares by any method permitted by law deemed
 to be an "at the market" offering as defined in Rule 415 of the Securities Act of 1933, as amended, including, without limitation, sales made through The Nasdaq Capital Market or on any other existing trading market for our common stock. The
 Agents will use commercially reasonable efforts to sell the Placement Shares from time to time, based upon our instructions (including any price, time or size limits or other customary parameters or conditions we may impose). We will pay the
 Agents a commission equal to three percent (3%) of the gross sales proceeds of any Placement Shares sold through the Agents under the Sales Agreement, and also has provided the Agents with customary indemnification and contribution rights. We
 are not obligated to make any sales of our common stock under the Sales Agreement. The offering of Placement Shares pursuant to the Sales Agreement will terminate upon the earlier of (i) the sale of all Placement Shares subject to the Sales
 Agreement or (ii) termination of the Sales Agreement in accordance with its terms. During the year ended December 31, 2023, we sold 2,642,269 shares of our common stock for a net value of $16.1 million pursuant to the Sales Agreement. For the
 year ended December 31, 2022, we sold 1,238,491 shares of our common stock for a net value of $9.9 million pursuant to the Sales Agreement. As of the date of this Annual Report, in the first quarter of 2024 we sold 3,428,681 shares of our
 common stock for a net value of $ 19.5 million pursuant to the Sales Agreement.

 To the extent that we raise additional capital by issuing equity securities, our existing stockholders' ownership may experience substantial dilution, and the terms of
 these securities may include liquidation or other preferences that adversely affect your rights as a common stockholder. 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, declaring dividends, creating liens, redeeming our stock or making investments.

 If we raise additional funds through collaborations, strategic alliances or marketing, distribution or licensing arrangements with third parties, we may have to relinquish
 valuable rights to our technologies, future revenue streams, research programs or Versamune Products or grant licenses on terms that may not be favorable to us. If we are unable to raise additional funds through equity or debt financings when
 needed, or through collaborations, strategic alliances or marketing, distribution or licensing arrangements with third parties on acceptable terms, we may be required to delay, limit, reduce or terminate our PDS0101 and PDS01ADC development or
 future commercialization efforts or grant rights to develop and market other Versamune and Infectimune products that we would otherwise develop and market.

 Our operating activities may be restricted as a result of covenants related to the outstanding indebtedness under our venture loan and security
 agreement with Horizon and we may be required to repay the outstanding indebtedness in an event of default, which could have a materially adverse effect on our business.

 In August 2022, we entered into a Venture loan and security agreement, or the Loan and Security Agreement, for separate term
 loans of up to an aggregate amount of $35.0 million, with Horizon Technology Finance Corporation, or Horizon, in its capacity as a lender and collateral agent for itself and the other financial institutions that from time to time become
 parties to the Loan and Security Agreement, collectively referred to as the Lenders, secured by a security interest in all of our respective rights, title, interests, claims and demands in, to and under all of our respective properties and
 other assets, subject to limited exceptions and excluding our intellectual property. The Loan and Security Agreement contains various covenants that limit our ability to engage in specified types of transactions. These covenants include
 requirements to maintain minimum cash balances as well as covenants limiting our ability to, among other things, sell, transfer, lease or dispose of certain assets; incur indebtedness; encumber or permit liens on certain assets; make certain
 investments; make certain restricted payments, including paying dividends on, or repurchasing or making distributions with respect to, our common stock; and enter into certain transactions with affiliates. Our business may be adversely
 affected by these restrictions on our ability to operate our business. A breach of any of the covenants under the Loan and Security Agreement could result in a default. Upon the occurrence of an event of default, the Lenders could elect to
 declare all amounts outstanding, if any, to be immediately due and payable. If there are any amounts outstanding that we are unable to repay, the Lenders could proceed against the collateral granted to them to secure such indebtedness.

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

 We are highly dependent on our executive officers and the other principal members of the executive and scientific teams, particularly our President and Chief Executive Officer,
 Dr. Frank K. Bedu-Addo, our Chief Medical Officer, Dr. Kirk Shepard, our Chief Financial Officer, Mr. Lars Boesgaard and our Chief Scientific Officer, Dr. Gregory L. Conn. The loss of the services of any of our senior executive officers could
 impede the achievement of our research, development and commercialization objectives. We do not maintain "key person" insurance for any executive officer or employee.

 Recruiting and retaining qualified scientific, clinical, and operational personnel is also critical to our success. We may not be able to attract and retain these personnel
 on acceptable terms given the competition among numerous pharmaceutical and biotechnology companies for similar personnel. We also experience competition for the hiring of scientific and clinical personnel from universities and research
 institutions. Our industry has experienced an increasing rate of turnover of management and scientific personnel in recent years. In addition, we rely on consultants and advisors, including scientific and clinical advisors, to assist us in
 devising our research and development and commercialization strategy. Our consultants and advisors may be employed by third parties and have commitments under consulting or advisory contracts with other entities that may limit their
 availability to advance our strategic objectives. If any of these advisors or consultants can no longer dedicate a sufficient amount of time to us, our business may be harmed.

 If we fail to obtain or maintain adequate coverage and reimbursement for PDS0101 or PDS01ADC, our ability to generate revenue could be limited.

 The availability and extent of reimbursement by governmental and private payors is essential for most patients to be able to afford expensive treatments. Sales of any of
 PDS0101 or PDS01ADC that receive marketing approval will depend substantially, both in the United States and internationally, on the extent to which the costs of PDS0101 or PDS01ADC will be paid by health maintenance, managed care, pharmacy
 benefit and similar healthcare management organizations, or reimbursed by government health administration authorities, private health coverage insurers and other third-party payors. If reimbursement is not available, or is available only on a
 limited basis, we may not be able to successfully commercialize PDS0101 alone or in combination with PDS01ADC. Even if coverage is provided, the approved reimbursement amount may not be high enough to allow us to establish or maintain adequate
 pricing that will allow it to realize a sufficient return on our investment.

 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, Canada and other countries may cause us to price PDS0101 alone or in combination with PDS01ADC on less favorable terms than we currently anticipate. In many countries, particularly
 the countries of the European Union, the prices of medical products are subject to varying price control mechanisms as part of national health systems. In these 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 PDS0101 or PDS01ADC to other
 available therapies. In general, the prices of products under such systems are substantially lower than in the United States. Other countries allow companies to fix their own prices for 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 PDS0101 alone or in combination with PDS01ADC. Accordingly, in markets outside the United States, the
 reimbursement for our products may be reduced compared with the United States and may be insufficient to generate commercially reasonable revenues and profits.

 Moreover, increasing efforts by governmental and third-party payors, in the United States and internationally, to cap or reduce healthcare costs may cause such
 organizations to limit both coverage and level of reimbursement for newly approved products and, as a result, they may not cover or provide adequate payment for PDS0101 or PDS01ADC. We expect to experience pricing pressures in connection with
 the sale of PDS0101 or PDS01ADC due to the trend toward managed healthcare, the increasing influence of health maintenance organizations and additional legislative changes. The downward pressure on healthcare costs in general, particularly
 prescription drugs and surgical procedures and other treatments, has become very intense. As a result, increasingly high barriers are being erected to the entry of new products into the healthcare market.

 The Inflation Reduction Act, referred to as the IRA, was recently signed into law by President Biden, which makes significant changes to how drugs are covered and paid for
 under the Medicare program, including the creation of financial penalties for drugs whose prices rise faster than the rate of inflation, redesign of the Medicare Part D program to require manufacturers to bear more of the liability for certain
 drug benefits, and government price-setting for certain Medicare Part D drugs, starting in 2026, and Medicare Part B drugs starting in 2028. We have evaluated, and will continue to evaluate, the effect of the IRA on our business. At this time,
 we do not expect the IRA to have a material effect on our financial position.

 We are unable to predict the future course of federal or state healthcare legislation in the United States directed at broadening the availability of healthcare and
 containing or lowering the cost of healthcare. The ACA and any further changes in the law or regulatory framework that reduce our revenue or increase our costs could also have a material and adverse effect on our business, financial condition
 and results of operations.

 Even if any of our product candidates receive marketing approval, they may fail to achieve the degree of market acceptance by physicians, patients, healthcare payors and others in the medical
 community necessary for commercial success.

 If any of our product candidates receive marketing approval, they may nonetheless fail to gain sufficient market acceptance by physicians, patients, healthcare payors and others in the medical community. For example,
 current cancer treatments like chemotherapy and radiation therapy are well-established in the medical community, and doctors may continue to rely on these treatments. If our product candidates do not achieve an adequate level of acceptance, we
 may not generate significant revenues from sales of drugs and we may not become profitable. The degree of market acceptance of our product candidates, if approved for commercial sale, will depend on a number of factors, including:

 the efficacy and safety of the product;

 the potential advantages of the product compared to alternative therapies;

 the prevalence and severity of any side effects;

 whether the product is designated under physician and other provider treatment guidelines as a first-, second- or third-line therapy;

 our ability, or the ability of any future collaborators, to offer the product for sale at competitive prices;

 the product's convenience and ease of administration for patients and healthcare practitioners compared to alternative treatments;

 the willingness of the target patient population to try, and of physicians to prescribe, the product;

 limitations or warnings, including distribution or use restrictions and safety information contained in the product's approved labeling;

 the strength of sales, marketing and distribution support;

 changes in the standard of care for the targeted indications for the product; and

 the availability of coverage by, and the amount of reimbursement from, government payors, managed care plans and other third-party payors.

 We will need to expand our organization, and may experience difficulties in managing this growth, which could disrupt operations.

 Our future financial performance and our ability to commercialize PDS0101 alone or in combination with PDS01ADC and compete effectively will depend, in part, on our ability
 to effectively manage any future growth. As of December 31, 2023, we had 25 employees and 18 consultants. We expect to hire additional employees for our managerial, clinical, scientific and engineering, operational, manufacturing, sales and
 marketing teams. We may have operational difficulties in connection with identifying, hiring and integrating new personnel. 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 our 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. Our expected growth could require significant capital expenditures and may divert financial resources from other projects, such as the development of PDS0101. If we are 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.

 Many of the other pharmaceutical 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 us. They also may provide more diverse opportunities and better chances for career advancement. Some of these characteristics may be more appealing to high-quality candidates and consultants than what it
 has to offer. If we are unable to continue to attract and retain high-quality personnel and consultants, the rate and success at which we can select and develop PDS0101 or PDS01ADC and our business will be limited.

 Our employees, independent contractors, principal investigators, consultants, commercial collaborators, service providers and other vendors may engage
 in misconduct or other improper activities, including noncompliance with regulatory standards and requirements, which could have an adverse effect on our results of operations.

 We are exposed to the risk that our employees and contractors, including principal investigators, consultants, commercial collaborators, service providers and other vendors
 may engage in fraudulent or other illegal activity. Misconduct by these parties could include intentional, reckless and/or negligent conduct or other unauthorized activities that violate the laws and regulations of the FDA and other similar
 regulatory bodies, including those laws that require the reporting of true, complete and accurate information to such regulatory bodies, manufacturing standards, federal and state healthcare fraud and abuse and health regulatory laws and other
 similar foreign fraudulent misconduct laws, or laws that require the true, complete and accurate reporting of financial information or data. Misconduct by these parties may also involve the improper use or misrepresentation of information
 obtained in the course of clinical trials, which could result in regulatory sanctions and serious harm to our reputation. It is not always possible to identify and deter third-party misconduct, 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.
 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 financial results, including the imposition of
 significant civil, criminal and administrative penalties, damages, monetary fines, possible exclusion from participation in Medicare, Medicaid and other federal healthcare programs, reputational harm, diminished profits and future earnings, and
 curtailment of our operations, any of which could adversely affect our ability to operate our business and our results of operations.

 Our business and operations would suffer, and could be negatively affected, in the event of system failures or cyberattacks.

 Our computer systems and those of our service providers, including our CROs, are vulnerable to damage from computer viruses, unauthorized access, natural disasters,
 terrorism, war and telecommunication and electrical failures. If such an event were to occur and cause interruptions in our or their operations, it could result in a material disruption of our development programs. For example, the loss of
 preclinical or clinical trial data from completed, ongoing or planned trials could result in delays in our regulatory approval efforts and significantly increase our costs to recover or reproduce the data. To the extent that any disruption or
 security breach were to result in a loss of or damage to data or applications, or inappropriate disclosure of personal, confidential or proprietary information, we could incur liability and the further development of PDS0101 and PDS01ADC could
 be delayed.

 A cyberattack or similar incident could occur and result in information theft, data corruption, operational disruption, damage to our reputation or financial loss. Our
 industry has become increasingly dependent on digital technologies to conduct certain development and financial activities. Our technologies, systems, networks, or other proprietary information, and those of our vendors, suppliers and other
 business partners, may become the target of cyberattacks or information security breaches that could result in the unauthorized release, gathering, monitoring, misuse, loss or destruction of proprietary and other information, or could otherwise
 lead to the disruption of our business operations. Cyberattacks are becoming more sophisticated and certain cyber incidents, such as surveillance, may remain undetected for an extended period and could lead to disruptions in critical systems or
 the unauthorized release of confidential or otherwise protected information. These events could lead to financial loss from remedial actions, loss of business, disruption of operations, damage to our reputation or potential liability. Our
 systems and insurance coverage for protecting against cybersecurity risks may not be sufficient. Further, as cyberattacks continue to evolve, we may be required to expend significant additional resources to continue to modify or enhance our
 protective measures or to investigate and remediate any vulnerability to cyberattacks.

 Our failure to comply with international data protection laws and regulations could lead to government enforcement actions and significant penalties
 against us, and adversely impact our operating results.

 EU member states and other foreign jurisdictions, including Switzerland, have adopted data protection laws and regulations which impose significant compliance obligations.
 Moreover, the collection and use of personal health data in the EU, which was formerly governed by the provisions of the EU Data Protection Directive, was replaced with the EU General Data Protection Regulation, or the GDPR, in May 2018. The
 GDPR, which is wide-ranging in scope, imposes several requirements relating to the consent of the individuals to whom the personal data relates, the information provided to the individuals, the security and confidentiality of the personal data,
 data breach notification and the use of third-party processors in connection with the processing of personal data. The GDPR also imposes strict rules on the transfer of personal data out of the EU to the U.S., provides an enforcement authority
 and imposes large penalties for noncompliance, including the potential for fines of up to 20 million or 4% of the annual global revenues of the noncompliant company, whichever is greater. The GDPR requirements apply not only to third-party
 transactions, but also to transfers of information between us and our subsidiary, including employee information. The recent implementation of the GDPR has increased our responsibility and liability in relation to personal data that we process,
 including in clinical trials, and we may in the future be required to put in place additional mechanisms to ensure compliance with the GDPR, which could divert management's attention and increase our cost of doing business. In addition, new
 regulation or legislative actions regarding data privacy and security (together with applicable industry standards) may increase our costs of doing business. In this regard, we expect that there will continue to be new proposed laws,
 regulations and industry standards relating to privacy and data protection in the United States, the EU and other jurisdictions, and we cannot determine the impact such future laws, regulations and standards may have on our business.

 Our failure to comply with state and/or national data protection laws and regulations could lead to government enforcement actions and significant
 penalties against us, and adversely impact our operating results.

 There are numerous other laws and legislative and regulatory initiatives at the federal and state levels addressing privacy and security concerns, and some state privacy
 laws apply more broadly than the Health Insurance Portability and Accountability Act, or HIPAA, and associated regulations. For example, California recently enacted legislation – the California Consumer Privacy Act, or CCPA – which went into
 effect January 1, 2020. The CCPA, among other things, creates new data privacy obligations for covered companies and provides new privacy rights to California residents, including the right to opt out of certain disclosures of their
 information. The CCPA also creates a private right of action with statutory damages for certain data breaches, thereby potentially increasing risks associated with a data breach. The CCPA was recently amended by the California Privacy Rights
 Act, or CPRA, expanding certain consumer rights such as the right to know. It remains unclear what, if any, additional modifications will be made to these laws by the California legislature or how these laws will be interpreted and enforced.
 The potential effects of the CCPA and CPRA and implementing regulations are significant and may cause us to incur substantial costs and expenses to comply.

 If we fail to maintain an effective system of internal control over financial reporting in the future, we may not be able to accurately report our
 financial condition, results of operations or cash flows, which may adversely affect investor confidence in us and, as a result, the value of our common stock. Further, we continue to incur significant increased costs as a result of operating
 as a public company, and our management is required to devote substantial time to compliance initiatives.

 As a public company, we continue to incur significant legal, accounting and other expenses that we did not incur as a private company. In addition, the Sarbanes-Oxley Act,
 as well as rules subsequently implemented by the SEC and Nasdaq, impose various requirements on public companies, including requiring establishment and maintenance of effective disclosure controls and internal control over financial reporting
 and changes in corporate governance practices. Our management and other personnel devote a substantial amount of time to these compliance initiatives. Moreover, these rules and regulations have increased our legal and financial compliance costs
 and have made some activities more time-consuming and costly.

 Effective internal controls over financial reporting are necessary for us to provide reliable financial reports and, together with adequate disclosure controls and
 procedures, are designed to prevent fraud. Any failure to implement required new or improved controls, or difficulties encountered in their implementation, could cause us to fail to meet our reporting obligations. In addition, any testing by us
 conducted in connection with Section 404 of the Sarbanes-Oxley Act, may reveal deficiencies in our internal control over financial reporting that are deemed to be material weaknesses or that may require prospective or retroactive changes to our
 financial statements or identify other areas for further attention or improvement. If we are unable to conclude that our internal control over financial reporting is effective, or if our independent registered public accounting firm determines
 we have a material weakness or significant deficiency in our internal control over financial reporting once that firm begins its Section 404 reviews or becomes aware of either during the conduct of an audit, we could lose investor confidence in
 the accuracy and completeness of our financial reports, the market price of our common stock could decline, and we could be subject to sanctions or investigations by the Nasdaq Capital Market, the SEC or other regulatory authorities. Failure to
 remedy any material weakness in our internal control over financial reporting, or to implement or maintain other effective control systems required of public companies, could also restrict our future access to the capital markets.

 Periodic reporting requirements under the Exchange Act and compliance with the Sarbanes-Oxley Act of 2002, including establishing and maintaining
 acceptable internal control over financial reporting, are costly and may increase substantially and, as a smaller reporting company, we may take advantage of reduced reporting requirements which may make our common stock less attractive to
 investors.

 We are subject to the periodic reporting requirements of the Securities Exchange Act of 1934, as amended, or the Exchange Act. Our disclosure controls and procedures are
 designed to reasonably assure that information required to be disclosed by us in reports we file or submit under the Exchange Act is accumulated and communicated to management, recorded, processed, summarized and reported within the time
 periods specified in the rules and forms of the SEC. We believe that any disclosure controls and procedures or internal controls and procedures, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance
 that the objectives of the control system are met. Our management and other personnel devote a substantial amount of time to these compliance initiatives. Moreover, these rules and regulations have increased our legal and financial compliance
 costs and will make some activities more time-consuming and costly.

 In addition, the Sarbanes-Oxley Act requires, among other things, that we maintain effective disclosure controls and procedures and internal control over financial reporting. In
 particular, Section 404 of the Sarbanes-Oxley Act will require us to perform system and process evaluation and testing of our internal control over financial reporting to allow management to report on, and our independent registered public
 accounting firm to attest to, the effectiveness of our internal control over financial reporting. We are currently a "smaller reporting company," but we will cease to be a smaller reporting company if we have a non-affiliate public float in
 excess of $250 million and annual revenues in excess of $100 million, or a non-affiliate public float in excess of $700 million, determined on an annual basis. As a smaller reporting company, we could take advantage of certain reduced
 governance and disclosure requirements, including not being required to comply with the auditor attestation requirements in the assessment of our internal control over financial reporting. As a result,
 investors and others may be less comfortable with the effectiveness of our internal controls and the risk that material weaknesses or other deficiencies in internal controls go undetected may increase. In
 addition, as a smaller reporting company, we take advantage of our ability to provide certain other less comprehensive disclosures in our SEC filings, including, among other things, providing only two years of audited financial statements in annual reports and simplified executive compensation disclosures. Consequently, it may be more challenging for investors
 to analyze our results of operations and financial prospects, as the information we provide to stockholders may be different from what one might receive from other public companies.

 We have identified conditions and events that raise substantial doubt regarding our ability to continue as a going concern.

 We have incurred net losses and utilized cash in operations since inception. In addition, as of December 31, 2023, we had
 approximately $56.6 million in cash and cash equivalents, and during the twelve months ended December 31, 2023, we used $33.6 million of cash in operations and expect to continue to incur significant cash outflows and incur future
 additional losses to execute our operating plan. While we intend to finance our cash needs principally through collaborations, strategic alliances, or license agreements with third parties and/or debt or equity financings, there is no
 assurance that new financing will be available to us on commercially acceptable terms or in the amounts required, if at all. In addition, the Loan and Security
 Agreement allows for the lenders to call the outstanding balance of the term loans if the minimum cash balances outlined in the Loan and Security Agreement are not maintained. Due to the uncertainty in securing additional funding,
 and the insufficient amount of cash and cash equivalents as of December 31, 2023, we have concluded that substantial doubt exists about our ability to continue as a going concern within one year after the date of the filing of this Annual
 Report. If we are unsuccessful in securing sufficient financing, we may need to delay, reduce, or eliminate our research and development programs, which could adversely affect our business prospects, or cease operations.

 Our consolidated financial statements included in this Annual Report have been prepared on a going concern basis under which an entity is able to realize its assets and
 satisfy its liabilities in the ordinary course of business. The consolidated financial statements do not give effect to any adjustments relating to the carrying values and classification of assets and liabilities that would be necessary should
 we be unable to continue as a going concern within one year after the date that the financial statements are issued.

 Our future operations are dependent upon the successful entry into collaborations, strategic alliances, or license agreements with third parties and/or on the
 identification and successful completion of equity or debt financing and the achievement of profitable operations at an indeterminate time in the future. There can be no assurances that we will be successful in completing these collaborations
 or alliances, equity or debt financing or in achieving profitability. As such, there can be no assurance that we will be able to continue as a going concern.

 Substantial doubt about our ability to continue as a going concern may materially and adversely affect the price per share of our common stock, and it may be more difficult
 for us to obtain financing. If potential collaborators decline to do business with us or potential investors decline to participate in any future financings due to such concerns, our ability to increase our cash position may be limited. The
 perception that we may not be able to continue as a going concern may cause others to choose not to deal with us due to concerns about our ability to meet our contractual obligations. If we are unable to continue as a going concern, you could
 lose all or part of your investment in our Company.

 Risks Related to Clinical Development, Regulatory Approval and Commercialization

 Clinical trials are very expensive, time-consuming, difficult to design and implement and involve an uncertain outcome, and if they
 fail to demonstrate safety and efficacy to the satisfaction of the FDA, or similar regulatory authorities, we will be unable to commercialize Versamune, Versamune in combination with PDS01ADC and Infectimune based products.

 PDS0101 and PDS01ADC are still in clinical development and will require additional clinical testing before we are prepared to submit a BLA for regulatory approval for any
 indication or for any other treatment regime. We cannot predict with any certainty if or when we might submit a BLA for regulatory approval for PDS0101, PDS01ADC and other Versamune based products or whether any such BLAs will be approved by
 the FDA. Human clinical trials are very expensive and difficult to design and implement, in part because they are subject to rigorous regulatory requirements. For instance, the FDA may not agree with our proposed endpoints for any clinical
 trial we propose, which may delay the commencement of our clinical trials. The clinical trial process is also time-consuming. We estimate that the clinical trials we need to conduct to be in a position to submit BLAs for PDS0101 alone or in
 combination with PDS01ADC will take several years to complete. We cannot predict the timeline for review of submissions to any regulatory authorities or when any of our product candidates will receive marketing approval, if at all. The timeline
 for regulatory approval can be affected by a variety of factors, including, budget and funding levels, agency staffing, and statutory, regulatory and policy changes.

 Furthermore, failure can occur at any stage of the trials, and we could encounter problems that cause us to abandon or repeat clinical trials. In later stages of clinical
 trials, PDS0101 and PDS01ADC may fail to show the desired safety and efficacy traits despite having progressed through preclinical studies and initial clinical trials, and the results of current clinical trials of PDS0101 therefore may not be
 predictive of the results of our continued or planned Phase 2 and 3 trials. A number of companies in the biopharmaceutical industry have suffered significant setbacks in advanced clinical trials due to lack of efficacy or adverse safety
 profiles, notwithstanding promising results in earlier stages of clinical trials.

 Moreover, preclinical and clinical data are often susceptible to multiple interpretations and analyses. Many companies that have believed their immunotherapies performed
 satisfactorily in preclinical studies and clinical trials have nonetheless failed to obtain marketing approval of their products. Success in preclinical testing and early clinical trials does not ensure that later clinical trials, which involve
 many more subjects and different indications than we have studied in Phase 2 clinical trials to date, and the results of later clinical trials may not replicate the results of prior clinical trials and preclinical testing. In particular, the
 small number of patients in our planned early clinical trials may make the results of these trials less predictive of the outcome of later clinical trials.

 Product development costs will also increase if we experience delays in testing or in receiving marketing approvals. We do not know whether any clinical trials will begin
 as planned, will need to be restructured or will be completed on schedule, or at all. Significant clinical trial delays also could shorten any periods during which we may have the exclusive right to commercialize PDS0101 alone or in combination
 with PDS01ADC, could allow our competitors to bring products to market before we do, and could impair our ability to successfully commercialize PDS0101 or PDS01ADC, any of which may harm our business and results of operations.

 Clinical drug development is a lengthy and expensive process, with an uncertain outcome. If clinical trials of our product candidates fail to demonstrate safety and efficacy
 to the satisfaction of regulatory authorities or do not otherwise produce positive results, we may incur additional costs, experience delays in completing, or ultimately be unable to complete, the development of our product candidates or be
 unable to obtain marketing approval.

 Before obtaining marketing approval from regulatory authorities for the sale of our product candidates, we must complete preclinical development and then conduct extensive clinical trials to
 demonstrate the safety and efficacy of our product candidates. Clinical testing is expensive, difficult to design and implement, can take many years to complete and is uncertain as to outcome. A failure of one or more clinical trials can occur at
 any stage of testing. The outcome of preclinical studies and early-stage clinical trials may not be predictive of the success of later clinical trials, and interim results of a clinical trial do not necessarily predict final results.

 Moreover, preclinical and clinical data are often susceptible to varying interpretations and analyses, and many companies that have believed their product candidates performed satisfactorily in
 preclinical studies and clinical trials have nonetheless failed to obtain marketing approval of their drugs.

 We do not know whether ongoing clinical trials will be completed on schedule or at all, or whether future clinical trials will begin on time, need to be redesigned, enroll patients on time or be
 completed on schedule, if at all. Clinical trials can be delayed for a variety of reasons, including delays related to:

 obtaining regulatory authorization to commence a trial;

 reaching agreement on acceptable terms with prospective contract research organizations, or CROs, and clinical trial sites, the terms of which can be subject to extensive negotiation and may vary significantly among different CROs and
 clinical trial sites;

 obtaining institutional review board or ethics committee approval at each clinical trial site;

 recruiting suitable patients to participate in a trial;

 patients failing to comply with the clinical trial protocol or dropping out of a trial;

 clinical trial sites failing to comply with the clinical trial protocol or dropping out of a trial;

 addressing any conflicts with new or existing laws or regulations;

 the need to add new clinical trial sites;

 manufacturing sufficient quantities of product candidate for use in clinical trials and ensuring clinical trial material is provided to clinical sites in a timely manner; or

 obtaining advice from regulatory authorities regarding the statistical analysis plan to be used to evaluate the clinical trial data or other trial design issues.

 We may experience numerous unforeseen events during, or as a result of, clinical trials that could delay or prevent our ability to receive marketing approval or commercialize our product
 candidates, including:

 we may receive feedback from regulatory authorities that requires us to modify the design of our clinical trials;

 clinical trials of our product candidates may produce negative or inconclusive results, and we may decide, or regulators may require us, to conduct additional clinical trials or abandon drug development programs;

 the number of patients required for clinical trials of our product candidates may be larger than we anticipate, enrollment in these clinical trials may be slower than we anticipate or participants may drop out of these clinical trials
 at a higher rate than we anticipate;

 our third-party contractors, including our CROs, may fail to comply with regulatory requirements or meet their contractual obligations to us in a timely manner, or at all;

 we, our investigators, or any of the overseeing IRBs or ethics committees might decide to suspend or terminate clinical trials of our product candidates for various reasons, including non-compliance with regulatory requirements, a
 finding that our product candidates have undesirable side effects or other unexpected characteristics, or a finding that the participants are being exposed to unacceptable health risks;

 the cost of clinical trials of our product candidates may be greater than we anticipate;

 the supply or quality of our product candidates or other materials necessary to conduct clinical trials of our product candidates may be insufficient or inadequate;

 regulators may revise the requirements for approving our product candidates, or such requirements may not be as we anticipate; and

 any future collaborators that conduct clinical trials may face any of the above issues and may conduct clinical trials in ways they view as advantageous to them but that are suboptimal for us.

 If we are required to conduct additional clinical trials or other testing of our product candidates beyond those that we currently contemplate, if we are unable to successfully complete clinical trials of our product candidates or
 other testing, if the results of these trials or tests are not positive or are insufficiently positive to support marketing approval, or if there are safety concerns, we may:

 incur unplanned costs;

 be delayed in obtaining marketing approval for our product candidates or not obtain marketing approval at all;

 obtain marketing approval in some countries and not in others;

 obtain marketing approval for indications or patient populations that are narrower or more limited in scope than intended or desired;

 obtain marketing approval subject to significant use or distribution restrictions or with labeling that includes significant safety warnings, including boxed warnings;

 be subject to additional post-marketing testing requirements; or

 have the drug removed from the market after obtaining marketing approval.

 Our drug development costs will also increase if we experience delays in testing or marketing approvals. We do not know whether clinical trials will begin as planned, will need to be restructured
 or will be completed on schedule, or at all. Furthermore, we rely on third-party CROs and clinical trial sites to ensure the proper and timely conduct of our clinical trials, and while we have agreements governing their committed activities, we
 have limited influence over their actual performance. Significant clinical trial delays also could shorten any periods during which we may have the exclusive right to commercialize our product candidates or allow our competitors to bring drugs to
 market before we do and impair our ability to successfully commercialize our product candidates and may harm our business and results of operations.

 Enrollment and retention of subjects in clinical trials is an expensive and time-consuming process and could be made more difficult or
 rendered impossible by multiple factors outside our control.

 We may encounter delays in enrolling, or be unable to enroll, a sufficient number of participants to complete any of our clinical trials. Once enrolled, we may be unable to
 retain a sufficient number of participants to complete any of our trials. Late-stage clinical trials of PDS0101 alone or in combination with PDS01ADC or other agents may require the enrollment and retention of large numbers of subjects. Subject
 enrollment and retention in clinical trials depends on many factors, including the size of the subject population, the nature of the trial protocol, the existing body of safety and efficacy data with respect to the study drug, the number and
 nature of competing treatments and ongoing clinical trials of competing drugs for the same indication, patients' and clinicians' perceived risks and benefits of the product candidate under study the proximity of subjects to clinical sites and
 the eligibility criteria for the study.

 Furthermore, any negative results we may report in clinical trials of PDS0101 and PDS01ADC may make it difficult or impossible to recruit and retain participants in other
 clinical trials of PDS0101. Delays or failures in planned subject enrollment or retention may result in increased costs, program delays or both, which could have a harmful effect on our ability to develop PDS0101 and PDS01ADC, or could render
 further development impractical. In addition, we expect to rely on CROs and clinical trial sites to ensure proper and timely conduct of our future clinical trials and, while we intend to enter into agreements governing their services, we will
 be limited in our ability to compel their actual performance in compliance with applicable regulations. Enforcement actions brought against these third parties may cause further delays and expenses related to our clinical development programs.

 Our inability to enroll a sufficient number of patients for our clinical trials would result in significant delays or may require us to abandon one or more clinical trials
 altogether. Enrollment delays in our clinical trials may result in increased development costs for our product candidates, which would cause the value of our company to decline and limit our ability to obtain additional financing.

 The successful development of immunotherapies is highly uncertain.

 Successful development of immunotherapies is highly uncertain and is dependent on numerous factors, many of which are beyond our control. Immunotherapies that appear
 promising in the early phases of development may fail to reach, or be delayed in reaching, the market for several reasons including: preclinical study results that may show the immunotherapy to be less effective than desired (e.g., the study
 failed to meet its primary objectives) or to have harmful or problematic side effects; clinical study results that may show the immunotherapy to be less effective than expected (e.g., the study failed to meet its primary endpoint) or to have
 unacceptable side effects; failure to receive the necessary regulatory approvals or a delay in receiving such approvals. Among other things, such delays may be caused by slow enrollment in clinical studies, length of time to achieve study
 endpoints, delays in receiving the necessary products or supplies for the conduct of clinical or preclinical trials, additional time requirements for data analysis, or Biologics License Application preparation, discussions with the FDA, an FDA
 request for additional preclinical or clinical data, FDA delays in inspecting manufacturing establishments, failure to receive FDA approval for manufacturing processes or facilities, or unexpected safety or manufacturing issues; manufacturing
 costs, formulation issues, pricing or reimbursement issues, or other factors that make the immunotherapy uneconomical; and the proprietary rights of others and their competing products and technologies that may prevent the immunotherapy from
 being commercialized. Success in preclinical and early and interim clinical studies does not ensure that large-scale clinical studies will be successful. Clinical results are frequently susceptible to varying interpretations that may delay,
 limit or prevent regulatory approvals. The length of time necessary to complete clinical studies and to submit an application for marketing approval for a final decision by a regulatory authority varies significantly from one immunotherapy to
 the next and may be difficult to predict. Even if our product candidates are approved, they may be subject to limitations on the indicated uses and populations for which they may be marketed. They may also be subject to other conditions of
 approval, may contain significant safety warnings, including boxed warnings, contraindications, and precautions, may not be approved with label statements necessary or desirable for successful commercialization, or may contain requirements for
 costly post-market testing and surveillance, or other requirements, including the submission of a REMS, to monitor the safety or efficacy of the products. If we do not receive FDA approval for, and successfully commercialize our product
 candidates, we will not be able to generate revenue from these product candidates in the United States in the foreseeable future, or at all. Any significant delays in obtaining approval for and commercializing our product candidates will have a
 material adverse impact on our business and financial condition.

 In addition, the success of our products will depend on several factors, including the following:

 successful initiation, successful patient enrollment and timely completion of clinical trials of these products;

 successful initiation and successful patient enrollment and completion of additional clinical trials, for our product candidates;

 our ability to demonstrate our products' safety, tolerability and efficacy to the FDA or any comparable foreign regulatory authority for marketing approval;

 timely receipt of marketing approvals for our products;

 obtaining and maintaining patent protection, trade secret protection and regulatory exclusivity, both in the United States and internationally;

 successfully defending and enforcing our rights in our intellectual property portfolio;

 avoiding and successfully defending against any claims that we have infringed, misappropriated or otherwise violated any intellectual property of any third party;

 the performance of our future collaborators, if any;

 the extent of, and our ability to timely complete, any required post-marketing approval commitments imposed by FDA or other applicable regulatory authorities;

 establishment of supply arrangements with third-party raw materials and drug product suppliers and manufacturers who are able to manufacture clinical trial and commercial quantities of our products and their components and to develop,
 validate and maintain a commercially viable manufacturing process that is compliant with current good manufacturing practices, or cGMP, at a scale sufficient to meet anticipated demand and over time enable us to reduce our cost of
 manufacturing;

 establishment of scaled production arrangements with third-party manufacturers to obtain finished products that are compliant with cGMP and appropriately packaged for sale;

 successful launch of commercial sales following any marketing approval;

 a continued acceptable safety profile following any marketing approval;

 commercial acceptance by patients, the medical community and third-party payors;

 the availability of coverage and adequate reimbursement and pricing by third-party payors and government authorities;

 the availability, perceived advantages, relative cost, relative safety and relative efficacy of alternative and competing treatments; and

 our ability to compete with other therapies.

 We do not have complete control over many of these factors, including certain aspects of clinical development and the regulatory submission process, potential threats to our intellectual property
 rights and the manufacturing, marketing, distribution and sales efforts of any future collaborator. Accordingly, we cannot assure you that we will ever be able to generate revenue through the sale of our product candidates. If we are not
 successful in commercializing our products, or are significantly delayed in doing so, our business will be materially harmed.

 We may not be able to file INDs or IND amendments to commence additional clinical trials on the timelines we expect, and even if we are able to, the FDA may not
 permit us to proceed.

 We may not be able to file INDs for our future product candidates on the timelines we expect. For example, we may experience manufacturing delays or other delays with IND-enabling studies.
 Moreover, we cannot be sure that submission of an IND will result in the FDA allowing further clinical trials to begin, or that, once begun, issues will not arise that lead FDA, IRBs, or other authorities to suspend, terminate, or require changes
 to our clinical trials. Additionally, even if such regulatory and other authorities agree with the design and implementation of the clinical trials set forth in an IND, we cannot guarantee that such regulatory authorities will not change their
 requirements in the future. These considerations also apply to new clinical trials or changes to existing clinical trials we may submit as amendments to existing INDs or to a new IND. Any failure to file INDs on the timelines we expect or to
 obtain regulatory clearance or approvals for our trials may prevent us from completing our clinical trials or commercializing our products on a timely basis, if at all.

 We face significant competition from other biotechnology and pharmaceutical companies, and our operating results will suffer if we fail to compete
 effectively.

 The biotechnology and biopharmaceutical industries are characterized by rapid technological developments and a high degree of competition. As a result, PDS0101, PDS01ADC or
 other Versamune and Infectimune based products could become obsolete before we recoup any portion of our related research and development and commercialization expenses. Competition in the biopharmaceutical industry is based significantly on
 scientific and technological factors. These factors include the availability of patent and other protection for technology and products, the ability to commercialize technological developments and the ability to obtain governmental approval for
 testing, manufacturing and marketing. We compete with specialized biopharmaceutical firms in the United States, Europe and elsewhere, as well as a growing number of large pharmaceutical companies that are applying biotechnology to their
 operations. Many biopharmaceutical companies have focused their development efforts in the human therapeutics area, including cancer. Many major pharmaceutical companies have developed or acquired internal biotechnology capabilities or made
 commercial arrangements with other biopharmaceutical companies. These companies, as well as academic institutions and governmental agencies and private research organizations, also compete with us in recruiting and retaining highly qualified
 scientific personnel and consultants. Our ability to compete successfully with other companies in the pharmaceutical field will also depend to a considerable degree on the continuing availability of capital to us.

 We are aware of certain investigational new drugs under development or approved products by competitors that are used for the prevention, diagnosis, or treatment of certain
 diseases we have targeted for drug development. Various companies are developing biopharmaceutical products that have the potential to directly compete with PDS0101 and PDS01ADC even though their approach to may be different. We believe our top
 clinical-stage competitors pursuing cancer immunotherapies and/or vaccines for infectious diseases include, but not limited to Merus N.V., F-Star Therapeutics, Johnson & Johnson Innovative Medicine (part of Johnson & Johnson),
 Sanofi-Aventis, GlaxoSmithKline plc, Merck and Pfizer, Inovio, Kite Pharma, Hookipa, Moderna, ZIOPHARM Oncology, Heat Biologics, Harpoon Therapeutics, BioNTech, Osivax, Medicago, Vaxart, and Flugen. Many of these companies have substantially
 greater financial, marketing, and human resources than we do (including, in some cases, substantially greater experience in clinical testing, manufacturing, and marketing of pharmaceutical products). If one or more of these companies is
 successful in developing their technologies, it could materially impact our business. We also experience competition in the development of our immunotherapies from universities and other research institutions and compete with others in
 acquiring technology from such universities and institutions.

 Competition may increase further as a result of advances in the commercial applicability of technologies and greater availability of capital for investment in these
 industries. Our competitors may succeed in developing, acquiring or licensing, on an exclusive basis, drugs that are more effective or less costly than PDS0101, PDS01ADC or our other Versamune and Infectimune based products.

 We will face competition from other drugs currently approved or that will be approved in the future for the treatment of the other cancers and infectious diseases we are
 currently targeting. Therefore, our ability to compete successfully will depend largely on our ability to:

 develop and commercialize immunotherapies that are superior to other alternatives in the market;

 demonstrate through our clinical trials that PDS0101 alone or in combination with PDS01ADC is differentiated from existing and fu ture therapies;

 attract qualified scientific, immunotherapy development and commer cial personnel;

 obtain additional patent or other proprietary protection for PDS0101, PDS01ADC and other Versamune and Infectimune - based products;

 obtain required regula tory approvals;

 obtain coverage and adequate reimbursement from, and negotiate competitive pricing with, third-pa rty payors; and

 successfully develop and commercialize, independently or with collaborators, new applications for PDS0101, PDS01ADC or i mmunotherapies.

 The availability of our competitors' immunotherapies and other treatments could limit the demand, and the price we are able to charge, for PDS0101 alone or in combination
 with PDS01ADC. The inability to compete with existing or subsequently introduced immunotherapies and other treatments would have an adverse impact on our business, financial condition and prospects.

 Established pharmaceutical companies may invest heavily to accelerate discovery and development of novel compounds or to license novel compounds that could make PDS0101 and
 PDS01ADC less competitive. In addition, any new immunotherapy that competes with an approved treatment must demonstrate compelling advantages in efficacy, convenience, tolerability and safety in order to overcome price competition and to be
 commercially successful. Accordingly, our competitors may succeed in obtaining patent protection, discovering, developing, receiving the FDA's approval for or commercializing medicines before we do, which would have an adverse impact on our
 business and results of operations.

 PDS0101 and PDS01ADC may cause adverse effects or have other properties that could delay or prevent its regulatory approval or limit the scope of any
 approved label or market acceptance.

 Adverse events caused by PDS0101 or PDS01ADC could cause reviewing entities, clinical trial sites or regulatory authorities to interrupt, delay or halt clinical trials and
 could result in the denial of regulatory approval. If clinical trials for PDS0101 and PDS01ADC report an unacceptable frequency or severity of adverse events, our ability to obtain regulatory approval for PDS0101 and PDS01ADC may be negatively
 impacted.

 Furthermore, if PDS0101 alone or in combination with PDS01ADC is approved and then causes serious or unexpected side effects, a number of potentially significant negative
 consequences could result, including:

 regulatory authorities may withdraw their approval of PDS0101 or PDS01ADC or impose restrictions on its distribution or other risk management measures;

 regulatory authorities may require the addition of labeling statements, such as warnings or con traindications;

 we may be required to change the way PDS0101 or PDS01ADC is administered or to conduct additional c linical trials;

 we could be sued and held liable for injuries sustain ed by patients;

 we could elect to discontinue the s ale of PDS0101 or PDS01ADC;

 our entire Versamune and Infectimune -based pipeline could be then p ut at risk; and

 our reputat ion may suffer.

 Any of these events could prevent us from achieving or maintaining market acceptance of PDS0101 and PDS01ADC and could substantially increase the costs of
 commercialization.

 In addition, if any of our product candidates are associated with adverse events or undesirable side effects or have properties that are unexpected, our trials could be
 suspended or terminated and the FDA or comparable foreign regulatory authorities could order us to cease further development of or deny approval of our product candidates for any or all targeted indications. We, or any future collaborators, may
 abandon development or limit development of that product candidate to certain uses or subpopulations in which the undesirable side effects or other characteristics are less prevalent, less severe or more acceptable from a risk-benefit
 perspective. Drug-related side effects could affect patient recruitment or the ability of enrolled patients to complete the trial or result in potential product liability claims. Any of these occurrences may harm our business, results of
 operations, financial condition and prospects significantly.

 If we are not able to obtain, or if there are delays in obtaining, required regulatory approvals, we will not be able to commercialize, or will be
 delayed in commercializing, PDS0101 and PDS01ADC, and our ability to generate revenue will be impaired.

 PDS0101 and PDS01ADC and the activities associated with their development and commercialization, including their design, testing, manufacture, safety, efficacy,
 recordkeeping, labeling, storage, approval, advertising, promotion, sale and distribution, are subject to comprehensive regulation by the FDA and other regulatory agencies in the United States and by comparable authorities in other countries.
 Failure to obtain marketing approval for PDS0101 alone or in combination with PDS01ADC will prevent us from commercializing our products. We have not received approval to market PDS0101 or PDS01ADC from regulatory authorities in any
 jurisdiction. We have only limited experience in filing and supporting the applications necessary to gain marketing approvals and expect to rely on contract research organizations to assist us in this process. Securing regulatory approval
 requires the submission of extensive preclinical and clinical data and supporting information to the various regulatory authorities for each therapeutic indication to establish the safety and efficacy of PDS0101 and PDS01ADC. Securing
 regulatory approval also requires the submission of information about the product manufacturing process, and inspection of manufacturing facilities by, the relevant regulatory authority. PDS0101 and PDS01ADC may not be effective, may be only
 moderately effective or may prove to have undesirable or unintended side effects, toxicities or other characteristics that may preclude it from obtaining marketing approval or prevent or limit commercial use.

 The process of obtaining marketing approvals, both in the United States and elsewhere, is expensive, may take many years and can vary substantially based upon a variety of
 factors. We cannot assure you that we will ever obtain any marketing approvals in any jurisdiction. Changes in marketing approval policies during the development period, changes in or the enactment of additional statutes or regulations or
 changes in regulatory review for each submitted product application may cause delays in the approval or rejection of an application. The FDA and comparable authorities in other countries have substantial discretion in the approval process and
 may refuse to accept any application or may decide that our data is insufficient for approval and require additional preclinical or other studies, and clinical trials. In addition, varying interpretations of the data obtained from preclinical
 testing and clinical trials could delay, limit or prevent marketing approval of PDS0101 and PDS01ADC. Additionally, any marketing approval we ultimately obtain may be limited or subject to restrictions or post-approval commitments that render
 the approved product not commercially viable.

 If any of our product candidates receives marketing approval and we, or others, later discover that the drug is less effective than
 previously believed or causes undesirable side effects that were not previously identified, our ability, or that of any future collaborators, to market the drug could be compromised.

 Clinical trials of our product candidates must be conducted in carefully defined subsets of patients who have agreed to enter into clinical trials. Consequently, it is
 possible that our clinical trials, or those of any future collaborator, may indicate an apparent positive effect of a product candidate that is greater than the actual positive effect, if any, or alternatively fail to identify undesirable side
 effects. If one or more of our product candidates receives marketing approval and we, or others, discover that the drug is less effective than previously believed or causes undesirable side effects that were not previously identified, a number
 of potentially significant negative consequences could result, including:

 regulatory authorities may withdraw their approval of the drug or seize the drug;

 we, or any future collaborators, may be required to recall the drug, change the way the drug is administered or conduct additional clinical trials;

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

 we may be subject to fines, injunctions or the imposition of civil or criminal penalties;

 regulatory authorities may require the addition of labeling statements, such as a "black box" warning or a contraindication;

 we, or any future collaborators, may be required to create a Medication Guide outlining the risks of the previously unidentified side effects for distribution to patients;

 we, or any future collaborators, could be sued and held liable for harm caused to patients;

 the drug may become less competitive in the marketplace; and

 our reputation may suffer.

 Any of these events could have a material and adverse effect on our operations and business and could adversely impact our stock price.

 We rely, and intend to continue to rely, on third parties to conduct our clinical trials and perform some of our research and preclinical studies. If
 these third parties do not satisfactorily carry out their contractual duties, fail to comply with applicable regulatory requirements or do not meet expected deadlines, our development programs may be delayed or subject to increased costs or we
 may be unable to obtain regulatory approval, each of which may have an adverse effect on our business, financial condition, results of operations and prospects.

 There is no guarantee that any such CROs, clinical trial investigators or other third parties on which we rely will devote adequate time and resources to our development
 activities or perform as contractually required. If any of these third parties fail to meet expected deadlines, adhere to our clinical protocols or meet regulatory requirements, otherwise perform in a substandard manner, or terminate their
 engagements with us, the timelines for our development programs may be extended or delayed or our development activities may be suspended or terminated. If our clinical trial site terminates for any reason, we may experience the loss of
 follow-up information on subjects enrolled in such clinical trial unless we are able to transfer those subjects to another qualified clinical trial site, which may be difficult or impossible. In addition, certain of our scientific advisors or
 consultants who receive compensation from us are clinical trial investigators for our clinical trial. Although we believe our existing relationships are within the FDA's guidelines, if these relationships and any related compensation result in
 perceived or actual conflicts of interest, or the FDA concludes that the financial relationship may have affected the interpretation of the trial, the integrity of the data generated at the applicable clinical trial site may be questioned and
 the utility of the clinical trial itself may be jeopardized, which could result in the delay or rejection of any marketing application we submit by the FDA. Any such delay or rejection could prevent us from commercializing PDS0101, PDS01ADC or
 any other product candidates.

 Even if we obtain FDA approval in the United States, we may never obtain approval for or commercialize PDS0101 or PDS01ADC in any other jurisdiction,
 which would limit our ability to realize each product's full market potential.

 In order to market PDS0101 or PDS01ADC in a particular jurisdiction, we must 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.

 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 testing and validation and additional administrative review periods. Seeking foreign regulatory approval could result in
 difficulties and costs for us and require additional preclinical studies or clinical trials that could be costly and time consuming. Regulatory requirements can vary widely from country to country and could delay or prevent the introduction of
 PDS0101 or PDS01ADC in those countries. PDS0101 or PDS01ADC is not 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.

 Interim, topline and preliminary data from our clinical trials that we announce or publish from time to time may change as more subject data becomes
 available and are subject to audit and verification procedures that could result in material changes in the final data.

 From time to time, we may publicly disclose interim, topline or preliminary data from our sponsored or investigator initiated clinical trials, such as preliminary topline
 results which are based on a preliminary analysis of then-available data, and the results and related findings and conclusions are subject to change following a full analysis of all data related to the particular trial. We also make
 assumptions, estimations, calculations and conclusions as part of our analyses of data, and we may not have received or had the opportunity to fully and carefully evaluate all data. In addition, we may report preliminary analyses of only
 certain endpoints rather than all endpoints. As a result, the interim, topline or preliminary results that we report may differ from future results of the same trials, or different conclusions or considerations may qualify such results, once
 additional data has been received and fully evaluated. Topline data also remain subject to audit and verification procedures that may result in the final data being materially different from the preliminary data we previously published. As a
 result, interim, topline and preliminary data should be viewed with caution until the final data is available. We may also disclose interim data from our clinical trials. Interim data from clinical trials that we may complete are subject to the
 risk that one or more of the clinical outcomes may materially change as subject enrollment continues and more subject data becomes available. Adverse differences between interim, topline or preliminary data and final data could significantly
 harm our reputation and business prospects. Further, disclosure of interim, topline or preliminary data by us or by our competitors could result in volatility in the price of our common stock.

 Further, others, including regulatory agencies, may not accept or agree with our assumptions, estimates, calculations, conclusions or analyses or may interpret or weigh the
 importance of data differently, which could impact the potential of the particular program, the likelihood of marketing approval or commercialization of the particular drug candidate, any approved product, and our company in general. In
 addition, the information we choose to publicly disclose regarding a particular study or clinical trial is derived from information that is typically extensive, and you or others may not agree with what we determine is material or otherwise
 appropriate information to include in our disclosure, and any information we determine not to disclose may ultimately be deemed significant with respect to future decisions, conclusions, views, activities or otherwise regarding a particular
 program, drug candidate or our business.

 If the interim, topline or preliminary data that we report differ from actual results, or if others, including regulatory authorities, disagree with the conclusions
 reached, our ability to pursue strategic alternatives, including identifying and consummating transactions with third-party partners, to further develop, obtain marketing approval for and/or commercialize our drug candidates may be harmed,
 which could harm our business, operating results, prospects or financial condition.

 The outcome of preclinical testing and early clinical trials may not be predictive of the success of later clinical trials, interim
 results of a clinical trial do not necessarily predict final results, and the results of our clinical trials may not satisfy the requirements of the FDA or comparable foreign regulatory authorities.

 We currently have no drugs approved for sale and we cannot guarantee that we will ever have marketable drugs. Clinical failure can occur at any stage of clinical
 development. Clinical trials may produce negative or inconclusive results, and we or any future collaborators may decide, or regulators may require us, to conduct additional clinical trials or preclinical studies. We will be required to
 demonstrate with substantial evidence through adequate and well-controlled clinical trials that our product candidates are safe and effective for use in treating specific conditions in order to obtain marketing approvals for their commercial
 sale. Success in preclinical studies and early-stage clinical trials does not mean that future larger registration clinical trials will be successful because product candidates in later-stage clinical trials may fail to demonstrate safety and
 efficacy to the satisfaction of the FDA and non-U.S. regulatory authorities despite having progressed through preclinical studies and early-stage clinical trials. Product candidates that have shown promising results in preclinical studies and
 early-stage clinical trials may still suffer significant setbacks in subsequent registration clinical trials. Additionally, the outcome of preclinical studies and early-stage clinical trials may not be predictive of the success of later-stage
 clinical trials.

 In addition, the design of a clinical trial can determine whether its results will support approval of a drug and flaws in the design of a clinical trial may not become
 apparent until the clinical trial is well advanced. We have limited experience in designing clinical trials and may be unable to design and conduct a clinical trial to support marketing approval. Further, if our product candidates are found to
 be unsafe or lack efficacy, we will not be able to obtain marketing approval for them and our business would be harmed. A number of companies in the pharmaceutical industry, including those with greater resources and experience than us, have
 suffered significant setbacks in advanced clinical trials, even after obtaining promising results in preclinical studies and earlier clinical trials.

 In some instances, there can be significant variability in safety and efficacy results between different clinical trials of the same product candidate due to numerous
 factors, including changes in trial protocols, differences in size and type of the patient populations, differences in and adherence to the dosing regimen and other trial protocols and the rate of dropout among clinical trial participants. We
 do not know whether any clinical trials we may conduct will demonstrate consistent or adequate efficacy and safety sufficient to obtain marketing approval to market our product candidates.

 In addition, in the event that an adverse safety issue, clinical hold, or other adverse finding occurs in one of our clinical trials, that event could adversely affect any
 other clinical trials for the same product candidate. An adverse safety issue or other adverse finding in a clinical trial conducted by a third party with a similar mechanism of action could adversely affect clinical trials involving our
 product candidates.

 Further, our product candidates may not be approved even if they achieve their primary endpoints in clinical trials, including registration trials. The FDA or comparable
 foreign regulatory authorities may disagree with our trial design and our interpretation of data from preclinical studies and clinical trials. In addition, any of these regulatory authorities may change requirements for the approval of a
 product candidate even after reviewing and providing comments or advice on a protocol for a pivotal clinical trial that has the potential to result in approval by the FDA or comparable foreign regulatory authorities. In addition, any of these
 regulatory authorities may also approve a product candidate for fewer or more limited indications than we request or may grant approval contingent on the performance of costly post-marketing clinical trials. In addition, the FDA or other
 comparable foreign regulatory authorities may not approve the labeling claims that we believe would be necessary or desirable for the successful commercialization of our product candidates.

 Before obtaining marketing approvals for the commercial sale of any product candidate for a target indication, we must demonstrate with substantial evidence gathered in
 preclinical studies and adequate and well-controlled clinical trials, and, with respect to approval in the United States, to the satisfaction of the FDA and elsewhere to the satisfaction of other comparable foreign regulatory authorities, that
 the product candidate is safe and effective for use for that target indication. There is no assurance that the FDA or other comparable foreign regulatory authorities will consider our future clinical trials to be sufficient to serve as the
 basis for approval of one of our product candidates for any indication. The FDA and other comparable foreign regulatory authorities retain broad discretion in evaluating the results of our clinical trials and in determining whether the results
 demonstrate that a product candidate is safe and effective. If we are required to conduct more clinical trials of a product candidate than we expect prior to its approval, we will need substantial additional funds and there is no assurance that
 the results of any such additional clinical trials will be sufficient for approval.

 Our product candidates are in various stages of development and we will not be able to commercialize our product candidates if our
 preclinical studies do not produce successful results and/or our clinical trials do not demonstrate the safety and efficacy of our product candidates; early results and early understanding of product candidate potential may not be predictive of
 later success.

 Our oncology and infectious disease product candidates are susceptible to the risks of failure inherent at any stage of product development, including the
 occurrence of unexpected or unacceptable adverse events or the failure to demonstrate efficacy in clinical trials. Clinical development is expensive and can take many years to complete, and its outcome is inherently uncertain.

 The results of preclinical studies, preliminary study results, and early clinical trials of our product candidates may not be predictive of the results of
 later-stage clinical trials. Our product candidates may not perform as we expect, may ultimately have a different or no impact than expected, may have a different mechanism of action than we initially understand or that we expect in humans, and
 may not ultimately prove to be safe and effective.

 Preliminary and final results from preclinical studies and early-stage trials, and trials in compounds that we believe are similar to ours, may not be
 representative of results that are found in larger, controlled, blinded, and longer-term studies. Product candidates may fail at any stage of preclinical or clinical development. Product candidates may fail to show the desired safety and
 efficacy traits even if they have progressed through preclinical studies or initial clinical trials. Preclinical studies and clinical trials may also reveal unfavorable product candidate characteristics, including safety concerns. A number of
 companies in the biopharmaceutical industry have suffered significant setbacks in clinical trials, notwithstanding promising results in earlier preclinical studies or clinical trials or promising mechanisms of action. In some instances, there
 can be significant variability in safety or efficacy results between different clinical trials of the same product candidate due to numerous factors, including changes in trial procedures set forth in protocols, differences in the size and type
 of the patient populations, changes in and adherence to the clinical trial protocols and the rate of dropout among clinical trial participants. Moreover, should there be an issue with the design of a clinical trial, our results may be impacted.
 We may not discover such a flaw until the clinical trial is at an advanced stage.

 We may also experience numerous unforeseen events during, or as a result of, clinical trials that could delay or prevent our ability to receive marketing approval or
 commercialize our product candidates. There may be emerging new data or regulatory questions or disagreements regarding interpretations of data and results at any stage. For example, the FDA or comparable foreign regulatory authorities may
 disagree with our study design, including endpoints, or our interpretation of data from preclinical studies and clinical trials or find that a product candidate's benefits do not outweigh its safety risks.

 Even if we obtain regulatory approval, we will still face extensive ongoing regulatory requirements, and PDS0101, PDS01ADC and other candidates may face
 future development and regulatory difficulties.

 Marketing of PDS0101 alone or in combination with PDS01ADC, if approved, along with the manufacturing processes, post- approval clinical data, labeling, packaging,
 distribution, adverse event reporting, storage, recordkeeping, export, import, advertising and promotional activities for PDS0101, 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, efficacy and other post-marketing information and reports, establishment of registration and drug listing requirements, continued compliance with current Good
 Manufacturing Practice, or 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 current Good Clinical Practice, or cGCP requirements for any clinical trials that we conduct post-approval. Even if marketing approval of PDS0101 or PDS01ADC is granted, the approval may be subject to limitations on the
 indicated uses for which PDS0101 may be marketed or to the conditions of approval. If PDS0101 or PDS01ADC receives marketing approval, an accompanying label may limit the approved use of the product(s), which could limit sales.

 The FDA may also impose requirements for costly post-marketing studies or clinical trials and surveillance to monitor the safety and/or efficacy of PDS0101 and PDS01ADC.
 The FDA closely regulates the post-approval marketing and promotion of drugs to ensure drugs 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 promote or otherwise market PDS0101 or PDS01ADC for indications other than those for which it is approved, we may be subject to certain enforcement actions. Violations of the
 Federal Food, Drug, and Cosmetic Act relating to the promotion of prescription biopharmaceutical products 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 PDS0101, manufacturers or manufacturing processes, or failure to comply with
 regulatory requirements, may yield various results, including:

 restrictions on manufacturing PDS0101 or PDS01ADC;

 restrictions on the labeling or market ing of PDS0101 or PDS01ADC;

 restrictions on distribution or use of PDS0101 or PDS01ADC;

 requirements to conduct post-marketing studies or c linical trials;

 suspension of any of our ongoing clinical trials;

 w arning letters;

 withdrawal of PDS0101 or PDS01ADC f rom the market;

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

 reca lls of PDS0101 or PDS01ADC;

 fines, restitution or disgorgement of profi ts or revenues;

 suspension or withdrawal of marke ting approvals;

 refusal to permit the import or exp ort of PDS0101 or PDS01ADC;

 seizures of PDS0101 or PDS01ADC; or

 injunctions or the imposition of civil or crim inal penalties.

 Any government investigation of alleged violations of law could require us to expend significant time and resources in response and could generate negative publicity. Any
 failure to comply with ongoing regulatory requirements may significantly and adversely affect our ability to commercialize and generate revenue from our product candidates, if approved. If regulatory sanctions are applied or if regulatory
 approval is withdrawn, the value of our company and our operating results will be adversely affected.

 The regulatory requirements and policies may change, and additional government regulations may be enacted for which we may also be required to comply. We cannot predict the
 likelihood, nature or extent of government regulation that may arise from future legislation or administrative action, either in the United States or in other countries. If we or any future collaboration partner are not able to maintain
 regulatory compliance, we or such collaboration partner, as applicable, may face government enforcement action and our business will suffer. Moreover, our or our future collaborators' ability to market any future drugs could be limited, which
 could adversely affect our ability to achieve or sustain profitability. Further, the cost of compliance with post-approval regulations may have a negative effect on our operating results and financial condition.

 Even if PDS0101 or PDS01ADC receives licensure, it may fail to achieve market acceptance by physicians, patients, third-party payors or others in the
 medical community necessary for commercial success.

 If PDS0101 alone or in combination with PDS01ADC receives marketing approval, it may nonetheless fail to gain sufficient market acceptance by physicians, patients,
 third-party payors and others in the medical community. If PDS0101 or PDS01ADC does not achieve an adequate level of acceptance, we may not generate significant revenues and become profitable. The degree of market acceptance, if approved for
 commercial sale, will depend on a number of factors, including but not limited to:

 the efficacy and potential advantages compared to alternative treatments;

 effectiveness of sales and mar keting efforts;

 the cost of treatment in relation to alternat ive treatments;

 our ability to offer PDS0101 or PDS01ADC for sale at comp etitive prices;

 the convenience and ease of administration compared to alternat ive treatments;

 the willingness of the target patient population to try new therapies and of physicians to prescribe t hese therapies;

 the willingness of the medical community to offer customers PDS0101 or PDS01ADC in addition to or in the place of other i mmunotherapies;

 the strength of marketing and distri bution support;

 the availability of third-party coverage and adequate reimbursement;

 whether the product is designated under physician and other provided treatment guidelines as a first, second, or third line therapy;

 the prevalence and severity of any si de effects; and

 any restrictions on the use of PDS0101 or PDS01ADC together with oth er medications.

 Because we expect sales of PDS0101 alone or in combination with PDS01ADC, if approved, to generate substantially all of our revenues for the foreseeable future, the failure
 of PDS0101 or PDS01ADC to achieve market acceptance would harm our business and could require us to seek additional financing sooner than we otherwise plan.

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

 Because we have limited financial and managerial resources, we are initially developing our product candidates PDS0101, PDS01ADC and the other Versamune and Infectimune based
 products. As a result, we may forego or delay pursuit of opportunities with other product candidates or for other indications that 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.

 If we fail to comply with federal and state healthcare regulatory laws, including in our relationships with healthcare providers and customers and
 third-party payors, we could face criminal prosecution and sanctions, substantial civil penalties, damages, fines, disgorgement, exclusion from participation in governmental healthcare programs, contractual damages, reputational harm, and the
 curtailment of our operations, any of which could harm our business.

 Although we do not provide healthcare services or submit claims for third-party reimbursement, we are subject to healthcare fraud and abuse regulation and enforcement by
 federal and state governments, which could significantly impact our business, particularly if and when we commercialize any product candidates and if and when payment becomes available from payors for our products. Additionally, our future
 arrangements with third-party payors and customers may expose us to broadly applicable fraud and abuse and other healthcare laws and regulations that may constrain the business or financial arrangements and relationships through which we market,
 sell and distribute our medicines for which we obtain marketing approval. The laws that may affect our ability to operate include, but are not limited to:

 The Federal Anti-Kickback Statute (AKS), which prohibits, among other things, persons and entities from knowingly and willfully soliciting, receiving, offering, or paying remuneration, directly
 or indirectly, in cash or in kind, in exchange for or to induce either the referral of an individual for, or the purchase, lease, order or recommendation of, any good, facility, item or service for which payment may be made, in whole or in part,
 under federal healthcare programs such as Medicare and Medicaid. The Affordable Care Act, among other things, amended the intent requirements of the federal AKS. A person or entity can now be found guilty of violating the AKS without actual
 knowledge of the statute or specific intent to violate it. In addition, the Affordable Care Act provides that a claim including items or services resulting from a violation of the federal AKS constitutes a false or fraudulent claim for purposes
 of the FCA.

 The False Claims Act's civil provisions, 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; knowingly making, using, or causing to be made or used, a false record or statement to get a false or fraudulent claim paid or approved by the government; or knowingly making,
 using, or causing to be made or used, a false record or statement to avoid, decrease or conceal an obligation to pay money to the federal government. Intent to deceive is not required to establish liability under the civil False Claims Act.

 The False Claims Act's criminal provisions, which imposes criminal fines or imprisonment against individuals or entities who make or present a claim to the government knowing such claim to be
 false, fictitious or fraudulent.

 The federal Health Insurance Portability and Accountability Act of 1996, or HIPAA, as amended, prohibits, among other actions, executing or attempting to execute, a scheme to defraud or to
 obtain, by means of false or fraudulent pretenses, representations, or promises, any of the money or property owned by, or under the custody or control of, a healthcare benefit program, regardless of whether the payor is public or private,
 knowingly and willfully embezzling or stealing from a health care benefit program, willfully obstructing a criminal investigation of a health care offense, and knowingly and willfully falsifying, concealing, or covering up by any trick or device
 a material fact or making any materially false statements in connection with the delivery of, or payment for, healthcare benefits, items, or services relating to healthcare matters.

 HIPAA, as amended by the HITECH Act, and its respective implementing regulations, now makes HIPAA ' s privacy and security standards directly applicable to
 business associates independent contractors or agents of covered entities that receive or obtain protected health information in connection with providing a service on behalf of a covered entity.

 Section 5(a) of the Federal Trade Commission Act, or the FTCA, 15 USC § 45(a), given that even for entities that are not deemed " covered entities " or " business associates " under HIPAA, according to the United States Federal
 Trade Commission, or the FTC, failing to take appropriate steps to keep consumers ' personal information secure constitutes unfair acts or practices in or affecting commerce in violation of its laws. The
 FTC expects a company ' s data security measures to be reasonable and appropriate in light of the sensitivity and volume of consumer information it holds, the size and complexity of its business, and the
 cost of available tools to improve security and reduce vulnerabilities. Medical data is considered sensitive data that merits stronger safeguards. The FTC ' s guidance for appropriately securing consumers ' personal information is similar to what is required by the HIPAA Security Rule.

 The federal "Sunshine" and "Open Payments" requirements under the Patient Protection and Affordable Care Act, as amended by the Health Care Education Reconciliation Act, or collectively, the
 Affordable Care Act, which require certain 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. Failure to submit timely, accurately, and completely the
 required information may result in civil monetary penalties of up to an aggregate of $150,000 per year and up to an aggregate of $1 million per year for " knowing failures." In 2022 the Sunshine Act was extended to payments and transfers of value to physician assistants, nurse practitioners, and other mid-level practitioners (with reporting requirements going into effect in 2022 for payments made in
 2021). In addition, Section 6004 of the ACA requires annual reporting of information about drug samples that manufacturers and authorized distributors provide to healthcare providers.

 State law equivalents of each of the above federal laws and state laws otherwise addressing the pharmaceutical and healthcare industries, such as anti-kickback and false
 claims laws that may apply to sales or marketing arrangements and claims involving healthcare items or services reimbursed by any third-party payor, including commercial insurers, and in some cases that may apply regardless of payor, i.e., even
 if reimbursement is not available; state laws that require pharmaceutical companies to comply with the pharmaceutical industry's voluntary compliance guidelines (the PhRMA Code) and the relevant compliance program guidance promulgated by the
 federal government (HHS-OIG), or otherwise prohibit, restrict or impose tracking and disclosure requirements related to payments, gifts, or others remuneration that may be made to healthcare providers and other potential referral sources, or
 marketing practices to such persons and entities or drug pricing information; data privacy and security laws and regulations in foreign jurisdictions that may be more stringent than those in the United States (such as the European Union, which
 adopted the General Data Protection Regulation, which became effective in May 2018) and state laws governing the privacy and security of information in certain circumstances, many of which differ from each other in significant ways and may not
 have the same effect, and may apply more broadly than HIPAA, thus complicating compliance efforts.

 In our business, healthcare providers, physicians and third-party payors will play a primary role in the recommendation and prescription of our product candidates, if
 approved for marketing. Moreover, while we do not plan to submit claims and our customers will make the ultimate decision on how to submit claims, from time to time, we may provide reimbursement guidance to our customers. Current or future
 arrangements with physicians and other healthcare providers and customers, and third-party payors, may expose us to broadly applicable fraud and abuse and other healthcare laws and regulations that may constrain the business or financial
 arrangements and relationships through which we market, sell and distribute our medicines for which we obtain marketing approval. If a government authority were to conclude that we provided improper advice to our customers or encouraged the
 submission of false claims for reimbursement or failed to comply with government price reporting requirements, or engaged in off-label promotion of products, we could face action by government authorities. Any violations of these laws, or any
 action against us for violation of these laws, even if we successfully defend against it, could result in a material adverse effect on our reputation, business, results of operations and financial condition.

 We have entered into consulting and employment arrangements with individuals, physicians and other healthcare providers. While we have worked to structure our arrangements to
 comply with applicable laws, because of the complex and far-reaching nature of these laws, regulatory agencies may view these transactions as prohibited arrangements that must be restructured, or discontinued, or for which we could be subject to
 other significant penalties. We could be adversely affected if regulatory agencies interpret our financial relationships with providers who serve as clinical investigators in our clinical trials, or influence the ordering of and use our products
 to be in violation of applicable laws.

 The scope and enforcement of each of these laws is uncertain and subject to rapid change in the current environment of healthcare reform, especially in light of the lack of
 applicable precedent and regulations. Federal and state enforcement bodies have recently increased their scrutiny of interactions between healthcare companies and healthcare providers, which has led to a number of investigations, prosecutions,
 convictions and settlements in the healthcare industry.

 Responding to investigations can be time- and resource-consuming and can divert management's attention from the business. Additionally, as a result of these investigations,
 healthcare providers and entities may have to agree to additional onerous compliance and reporting requirements as part of a consent decree or corporate integrity agreement. Any such investigation or settlement could increase our costs or
 otherwise have an adverse effect on our business.

 Even if we are able to commercialize any product candidate, such product candidate may become subject to unfavorable pricing regulations, third-party
 coverage and reimbursement policies or healthcare reform initiatives, which could harm our business.

 The regulations that govern marketing approval, pricing, coverage and reimbursement for new drugs vary widely from country to country. Some countries require approval of the
 sale price of a drug before it can be marketed. In many countries, the pricing review period begins after marketing approval is granted. In some foreign markets, prescription pharmaceutical pricing remains subject to continuing governmental
 control even after initial approval is granted. As a result, we might obtain marketing approval for a product in a particular country, but then be subject to price regulations that delay our commercial launch of the product, possibly for lengthy
 time periods, and negatively impact the revenues we are able to generate from the sale of the product in that country. Adverse pricing limitations may hinder our ability to recoup our investment in one or more product candidates, even if our
 product candidates obtain marketing approval.

 Our ability to commercialize any products successfully also will depend in part on the extent to which reimbursement and coverage for these products and related treatments
 will be available from government authorities, private health insurers and other organizations, and if reimbursement and coverage is available, the level of reimbursement and coverage. Government authorities and third-party payors, such as
 private health insurers and health maintenance organizations, decide which medications they will pay for and establish reimbursement levels. A primary trend in the healthcare industry in the United States and elsewhere is cost containment.
 Government authorities and third-party payors have attempted to control costs by limiting coverage and the amount of reimbursement for particular medications. Increasingly, the third-party payors who reimburse patients or healthcare providers,
 such as government and private insurance plans, are requiring that drug companies provide them with predetermined discounts from list prices, and are seeking to reduce the prices charged or the amounts reimbursed for medical products. We cannot
 be sure that coverage and reimbursement will be available for any drug that we commercialize and, if coverage and reimbursement are available, we cannot be sure as to the level of reimbursement. Reimbursement may impact the demand for, or the
 price of, any product candidate for which we obtain marketing approval. If reimbursement is not available or is available only to limited levels, we may not be able to successfully commercialize any product candidate for which we obtain marketing
 approval.

 There may be significant delays in obtaining reimbursement for newly approved drugs, and coverage may be more limited than the purposes for which the drug is approved by the
 FDA or comparable foreign regulatory authorities. Moreover, eligibility for reimbursement does not imply that any drug will be reimbursed in all cases or at a rate that covers our costs, including research, development, manufacture, sale and
 distribution. Interim reimbursement levels for new drugs, if applicable, may also not be sufficient to cover our costs and may not be made permanent. Reimbursement rates may vary according to the use of the drug and the clinical setting in which
 it is used, may be based on reimbursement levels already set for lower cost drugs, may be incorporated into existing payments for other items or services and may reflect budgetary constraints or imperfections in Medicare data. Net prices for
 drugs may be reduced by mandatory discounts or rebates required by government healthcare programs or private payors and by any future relaxation of laws that presently restrict imports of drugs from countries where they may be sold at lower
 prices than in the United States. Third-party payors often rely upon Medicare coverage policy and payment limitations in setting their own reimbursement rates. Our inability to promptly obtain coverage and adequate reimbursement rates from both
 government-funded and private payors for new products that we develop and for which we obtain marketing approval could have a material adverse effect on our operating results, our ability to raise capital needed to commercialize products and our
 overall financial condition.

 Product liability lawsuits against us could cause us to incur substantial liabilities and could limit the commercialization of PDS0101 and PDS01ADC.

 We face an inherent risk of product liability exposure related to the testing of PDS0101 alone or in combination with PDS01ADC in human clinical trials and will face an
 even greater risk if we commercially sell any products that we may develop after approval. Regardless of merit or eventual outcome, liability claims may result in:

 decreased demand for PDS0101, PDS01ADC or other immunotherapies that we may develop;

 injury to our reputation and significant negative m edia attention;

 withdrawal of clinical tria l participants;

 significant costs to defend any rela ted litigation;

 substantial monetary awards to trial subjec ts or patients;

 loss of revenue; and

 the inability to commercialize any products we may develop.

 Although we maintain product liability insurance coverage in the amount of up to $10 million per claim and $10 million in the aggregate, it may not be adequate to cover all
 liabilities that it may incur. We anticipate that we will need to increase our insurance coverage as we continue clinical trials and if we successfully commercialize any products. Insurance coverage is increasingly expensive. We may not be able
 to maintain insurance coverage at a reasonable cost or in an amount adequate to satisfy any liability that may arise.

 If we are unable to establish sales, marketing and distribution capabilities either on our own or in collaboration with third parties, we may not be
 successful in commercializing PDS0101, PDS01ADC and other product candidates, if approved.

 We do not have any infrastructure for the sales, marketing or distribution of PDS0101, PDS01ADC or other product candidates, and the cost of establishing and maintaining
 such an organization may exceed the cost-effectiveness of doing so. In order to market PDS0101, PDS01ADC or other product candidates, we must build our sales, distribution, marketing, managerial and other non-technical capabilities or make
 arrangements with third parties to perform these services. To achieve commercial success for PDS0101, PDS01ADC or other product candidates, we will need either our own, or a third party's, sales and marketing organization. There are significant
 expenses and risks involved with creating teams for, or contracting for, sales, marketing and distribution capabilities. Any failure or delay in the development of our sales, marketing and distribution capabilities, either internally or in
 collaboration with third parties, could delay the launch of PDS0101, PDS01ADC or other product candidates, which would adversely affect commercialization.

 We may 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.

 If we obtain approval to commercialize PDS0101, PDS01ADC or other product candidates outside of the United States, a variety of risks associated with
 international operations could harm our business.

 If PDS0101, PDS01ADC or other product candidates is approved for commercialization, we may enter into agreements with third parties to market them in certain jurisdictions
 outside the United States. We expect that we will be subject to additional risks related to international operations or entering into international business relationships, including:

 different regulatory requirements for drug approvals and rules governing drug commercialization in foreign countries;

 reduced protection for intellectual p roperty rights;

 unexpected changes in tariffs, trade barriers and regulator y requirements;

 economic weakness, including inflation, or political instability in particular foreign economi es and markets;

 compliance with tax, employment, immigration and labor laws for employees living or tr aveling abroad;

 foreign reimbursement, pricing and ins urance regimes;

 foreign taxes;

 foreign currency fluctuations, which could result in increased operating expenses and reduced revenues, and other obligations incident to doing business in a nother country;

 workforce uncertainty in countries where labor unrest is more common than in the United States;

 potential noncompliance with the U.S. Foreign Corrupt Practices Act, the U.K. Bribery Act 2010 and similar anti-bribery and anticorruption laws in other jurisdictions;

 shortages resulting from any events affecting raw material supply or manufacturing capabilit ies abroad; and

 business interruptions resulting from geopolitical actions, including war and terrorism, or natural disasters including earthquakes, typhoons, fl oods and fires.

 We have no prior experience in these areas. In addition, there are complex regulatory, tax, labor and other legal requirements imposed by both the European Union and many
 of the individual countries in Europe with which we will need to comply.

 Recently enacted and future healthcare legislation, regulations, and policy initiatives may increase the difficulty and cost for us to obtain marketing
 approval of and commercialize PDS0101, PDS01ADC or other product candidates and affect the prices we may obtain and our profitability.

 In the United States and some foreign jurisdictions, there have been a number of legislative and regulatory changes and proposed changes regarding the healthcare system
 that could, among other things, prevent or delay marketing approval of PDS0101 alone or in combination with PDS01ADC and our other product candidates, restrict or regulate post-approval activities and affect our ability to profitably sell
 PDS0101, PDS01ADC and other product candidates.

 For example, in March 2010, the Affordable Care Act, or ACA, was enacted to broaden access to health insurance, reduce or constrain the growth of healthcare spending, enhance
 remedies against fraud and abuse, add new transparency requirements for health care and health insurance industries, impose new taxes and fees on the health industry and impose additional health policy reforms. Since its enactment, there have
 been judicial, executive and Congressional challenges to certain aspects of the ACA. On June 17, 2021, the U.S. Supreme Court dismissed the most recent judicial challenge to the ACA brought by several states without specifically ruling on the
 constitutionality of the Act. Prior to the Supreme Court's decision, President Biden issued an executive order to initiate a special enrollment period from February 15, 2021 through August 15, 2021 for purposes of obtaining health insurance
 coverage through the ACA marketplace. The executive order also instructed certain governmental agencies to review and reconsider their existing policies and rules that limit access to healthcare, including among others, reexamining Medicaid
 demonstration projects and waiver programs that include work requirements, and policies that create unnecessary barriers to obtaining access to health insurance coverage through Medicaid or the ACA. It is unclear how other healthcare reform
 measures of the Biden administration or other efforts, if any, to challenge, repeal or replace the ACA will impact health care laws and regulations or our business.

 As another example, the Drug Supply Chain Security Act imposes obligations on manufacturers of prescription biopharmaceuticals in finished dosage forms for commercial
 distribution. We have not yet adopted the significant measures that will be required to comply with this law. We are not sure whether additional legislative changes will be enacted, or whether the current regulations, guidance or
 interpretations will be changed, or what the impact of such changes on our business, if any, may be.

 We expect that additional state and federal healthcare reform measures will be adopted in the future, any of which could limit the amounts that federal and state
 governments will pay for immunotherapies, which could result in reduced demand for PDS0101 and other product candidates or additional pricing pressures.

 Risks Related to Our Dependence on Third Parties

 We have no manufacturing, sales, marketing or distribution capability and we must rely upon third parties for such.

 We currently have agreements with various third-party manufacturing facilities for production of our products for research and development and testing purposes. We depend
 on third-party manufacturers to supply our preclinical and clinical materials and will be reliant on a third-party manufacturer to produce PDS0101 or PDS01ADC on a commercial scale, should that product receive regulatory approval. Third-party
 manufacturers must be able to meet our deadlines and adhere to quality standards and specifications. Our predominant reliance on third parties for the manufacture of PDS0101, PDS01ADC and all of our Versamune and Infectimune based products
 creates a dependency that could severely disrupt our research and development, clinical testing, and sales and marketing efforts if the source of such supply proves to be unreliable or unavailable. There is no assurance that any third-party
 manufacturers will be able to meet commercialized scale production requirements in a timely manner or in accordance with applicable standards or cGMP.

 We expect to rely on third-party manufacturers or third-party collaborators for the manufacture of our product candidates for commercial supply of any of our product candidates for which we or
 any of our future collaborators obtain marketing approval. We may be unable to establish any agreements with third-party manufacturers or to do so on acceptable terms. Even if we are able to establish agreements with third-party manufacturers,
 reliance on third-party manufacturers entails additional risks, including:

 the possible failure of the third party to manufacture our product candidate according to our schedule, or at all, including if our third-party contractors give greater priority to the supply of other products over our product
 candidates or otherwise do not satisfactorily perform according to the terms of the agreements between us and them;

 the possible termination or nonrenewal of agreements by our third-party contractors at a time that is costly or inconvenient for us;

 the possible breach by the third-party contractors of our agreements with them;

 the failure of third-party contractors to comply with applicable regulatory requirements;

 the possible failure of the third party to manufacture our product candidates according to our specifications;

 the possible mislabeling of clinical supplies, potentially resulting in issues including the wrong dose amounts being supplied or active drug or placebo not being properly identified;

 the possibility of clinical supplies not being delivered to clinical sites on time, leading to clinical trial interruptions, or of drug supplies not being distributed to commercial vendors in a timely manner, resulting in lost sales;
 and

 the possible misappropriation of our proprietary information, including our trade secrets and know-how.

 The facilities used by our contract manufacturers to manufacture our product candidates must be approved by the FDA or the EMA pursuant to inspections that will be conducted after we submit our
 BLA to the FDA or our MAA to the EMA. We do not have complete control over all aspects of the manufacturing process of, and are dependent on, our contract manufacturing partners for compliance with cGMP regulations for manufacturing both active
 drug substances and finished drug products. Third-party manufacturers may not be able to comply with cGMP regulations or similar regulatory requirements outside of the United States. If our contract manufacturers cannot successfully manufacture
 material that conforms to our specifications and the strict regulatory requirements of the FDA or comparable foreign regulatory bodies, they will not be able to secure and/or maintain marketing approval for their manufacturing facilities. In
 addition, we do not have complete control over the ability of our contract manufacturers to maintain adequate quality control, quality assurance and qualified personnel. If the FDA, the EMA or a comparable foreign regulatory authority does not
 approve these facilities for the manufacture of our product candidates or if it withdraws any such approval in the future, we may need to find alternative manufacturing facilities, which would significantly impact our ability to develop, obtain
 marketing approval for or market our product candidates, if approved.

 Our failure, or the failure of our third-party manufacturers, to comply with applicable regulations could result in sanctions being imposed on us, including fines, injunctions, civil penalties,
 delays, suspension or withdrawal of approvals, license revocation, seizures or recalls of product candidates or drugs, operating restrictions and criminal prosecutions, any of which could significantly and adversely affect supplies of our product
 candidates and harm our business and results of operations.

 Any drugs that we may develop may compete with other product candidates and drugs for access to manufacturing facilities. There are a limited number of manufacturers that operate under cGMP
 regulations and that might be capable of manufacturing for us.

 Any performance failure on the part of our existing or future manufacturers could delay clinical development or marketing approval.

 We do not currently have arrangements in place for redundant supply of the components of our product candidates. If our current contract manufacturer cannot perform as agreed, we may be required
 to replace that manufacturer. Although we believe that there are several potential alternative manufacturers who could manufacture our product candidates, we may incur added costs and delays in identifying and qualifying any such replacement.

 Our current and anticipated future dependence upon others for the manufacture of our product candidates or drugs may adversely affect our future profit margins and our ability to commercialize any drugs that
 receive marketing approval on a timely and competitive basis.

 We intend to rely on third parties to conduct, supervise and monitor our clinical trials, and if those third parties perform in an unsatisfactory
 manner, it may harm our business.

 We intend to rely on CROs and clinical trial sites to ensure the proper and timely conduct of our clinical trials, and we expect to have limited influence over their actual
 performance.

 We intend to rely upon CROs to monitor and manage data for our clinical programs. We expect to control only certain aspects of our CROs' activities. Nevertheless, we will
 be 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 CROs will be required to comply with the Good Laboratory Practices 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 and comparable foreign regulatory authorities in the form of International Conference on Harmonization guidelines for our products. The Regulatory authorities enforce GCPs
 through periodic inspections of trial sponsors, principal investigators and clinical trial sites. If we or our CROs 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. Accordingly, if our CROs 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 CROs 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
 CROs may also have relationships with other commercial entities, including our competitors, for whom they may also be conducting clinical trials, or other drug development activities which could harm our competitive position. We face the risk
 of potential unauthorized disclosure or misappropriation of our intellectual property by CROs, which may reduce our trade secret protection and allow our potential competitors to access and exploit our proprietary technology. If our CROs 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 PDS0101 alone or in combination with PDS01ADC. As a
 result, our financial results and the commercial prospects for PDS0101 and PDS01ADC would be harmed, our costs could increase, and our ability to generate revenues could be delayed.

 If our relationship with these CROs terminate, we may not be able to enter into arrangements with alternative CROs or do so on commercially reasonable terms. Switching or
 adding additional CROs involves substantial cost and requires management time and focus. In addition, there is a natural transition period when a new CRO 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 CROs, 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.

 If we are unable to establish or manage strategic collaborations in the future, our revenue and drug development may be limited.

 Our strategy may include potential reliance upon strategic collaborations for marketing and commercialization of PDS0101 and other Versamune, Versamune in combination
 with PDS01ADC and Infectimune Products. We also rely on strategic collaborations for research, development, marketing and commercialization for PDS0101 and other Versamune Products. We have also been heavily reliant upon third-party
 outsourcing for our clinical trials execution and production of drug supplies for use in clinical trials.

 Establishing strategic collaborations is difficult and time-consuming. Our discussions with potential collaborators may not lead to the establishment of collaborations on
 favorable terms, if at all. We face significant competition in seeking appropriate collaborators. Whether we reach a definitive agreement for a collaboration will depend, among other things, upon our assessment of the collaborator's resources
 and expertise, the terms and conditions of the proposed collaboration and the proposed collaborator's evaluation of a number of factors. Those factors may include the design or results of clinical trials, the likelihood of approval by the FDA
 or similar regulatory authorities outside the United States, the potential market for PDS0101 and other Versamune and Versamune in combination with PDS01ADC Products, the costs and complexities of manufacturing and delivering PDS0101 and
 other Versamune and Versamune in combination with PDS01ADC Products to patients, the potential of competing products, the existence of uncertainty with respect to our ownership of technology, which can exist if there is a challenge to such
 ownership without regard to the merits of the challenge and industry and market conditions generally. The collaborator may also consider alternative immunotherapies for similar indications that may be available to collaborate on and whether
 such a collaboration could be more attractive than the one with us for PDS0101 and other Versamune and Versamune in combination with PDS01ADC Products.

 Our current collaborations, as well as any future new collaborations, may never result in the successful development or commercialization of PDS0101 and other Versamune,
 Versamune in combination with PDS01ADC and Infectimune Products or the generation of sales revenue. To the extent that we have entered or will enter into co-promotion or other collaborative arrangements, PDS0101 and other Versamune and
 Versamune in combination with PDS01ADC Products revenues are likely to be lower than if we directly marketed and sold any products that we develop.

 Management of our relationships with our collaborators will require:

 significant time and effort from our management team;

 financial funding to support said collaboration;

 coordination of our research and development programs with the research and development priorities of our collaborators; and

 effective allocation of our resources to multiple projects.

 If we continue to enter into research and development collaborations, our success will in part depend on the performance of our collaborators. We will not directly control
 the amount or timing of resources devoted by our collaborators to activities related to PDS0101 and other Versamune and Versamune in combination with PDS01ADC Products. Our collaborators may not commit sufficient resources to our research and
 development programs or the commercialization, marketing or distribution of PDS0101 and other Versamune and Versamune in combination with PDS01ADC Products. If any collaborator fails to commit sufficient resources, our preclinical or clinical
 development programs related to this collaboration could be delayed or terminated. Also, our collaborators may pursue existing or other development-stage products or alternative technologies in preference to those being developed in
 collaboration with us. If we fail to make required milestone or royalty payments to our collaborators or to observe other obligations in our agreements with them, our collaborators may have the right to terminate those agreements. Additionally,
 our collaborators may seek to renegotiate agreements we have entered into, or may disagree with us about the terms and implementation of these agreements. If collaborators disagree with us about the terms or implementation of our agreements, we
 may face legal claims that may involve considerable expense and could negatively affect our financial results.

 We enter into various contracts in the normal course of our business in which we agree to indemnify the
 other party to the contract. In the event we have to perform under these indemnification provisions, it could have a material adverse effect on our business, financial condition and results of operations.

 In the normal course of business, we periodically enter into academic, commercial, service, collaboration, licensing, consulting and other agreements that contain
 indemnification provisions. With respect to our academic and other research agreements, we typically agree to indemnify the institution and related parties from losses arising from claims relating to the products, processes or services made,
 used, sold or performed pursuant to the agreements for which we have secured licenses, and from claims arising from our or our sub licensees' exercise of rights under the agreement. With respect to our commercial agreements, we have agreed to
 indemnify our vendors from any third-party product liability claims that could result from the production, use or consumption of the product, as well as for alleged infringements of any patent or other intellectual property right by a third
 party. With respect to consultants, we typically agree to indemnify them from claims arising from the good faith performance of their services.

 Should our obligation under an indemnification provision exceed applicable insurance coverage or if we were denied insurance coverage or not covered by insurance, our
 business, financial condition and results of operations could be adversely affected. Similarly, if we are relying on a collaborator or other third party to indemnify us and the collaborator or other third party is denied insurance coverage or
 otherwise does not have assets available to indemnify us, our business, financial condition and results of operations could be adversely affected.

 The failure of third parties to meet their contractual, regulatory, and other obligations could adversely affect our business.

 We rely on suppliers, vendors, outsourcing partners, consultants, alliance partners and other third parties to research, develop, manufacture and commercialize our products
 and manage certain parts of our business. Using these third parties poses a number of risks, such as:

 they may not perform to our standards or legal requirements;

 they may not produce re liable results;

 they may not perform in a timely manner;

 they may not maintain confidentiality of our proprieta ry information;

 disputes may arise with respect to ownership of rights to technology developed with our partners, and those disputes may be resolved against us; and

 disagreements could cause delays in, or termination of, the research, development or commercialization of our products or result in litigation or arbitration.

 Moreover, some third parties are located in markets subject to political and social risk, corruption, infrastructure problems and natural disasters, in addition to
 country-specific privacy and data security risk given current legal and regulatory environments. Failure of third parties to meet their contractual, regulatory, legal and other obligations may materially affect our business.

 Our business could be adversely affected by the effects of health epidemics, pandemics, or outbreaks of infectious diseases in regions where we or third
 parties on which we rely have significant manufacturing facilities, concentrations of clinical trial sites or other business operations.

 Our business could be adversely affected by health epidemics in regions where we have concentrations of clinical trial sites or other business operations and could cause
 significant disruption in the operations of third-party manufacturers and CROs upon whom we rely.

 As a result of pandemics, and related "shelter in place" orders and other public health guidance measures, we have and may in the future experience disruptions that
 materially and adversely impact our clinical trials, business, financial condition and results of operations. Potential disruptions include but are not limited to:

 delays or difficulties in enrolling patients in our clinical trials;

 delays or difficulties in initiating or expanding clinical trials, including delays or difficulties with clinical site initiation and recruiting clinical site investigators and clinical site staff;

 diversion of healthcare resources away from the conduct of clinical trials, including the diversion of hospitals serving as our clinical trial sites and hospital staff supporting the conduct of our clinical
 trials;

 interruption of key clinical trial activities, such as clinical trial site data monitoring, due to limitations on travel imposed or recommended by federal or state governments, employers and others or
 interruption of clinical trial subject visits and study procedures, which may impact the integrity of subject data and clinical study endpoints;

 interruption or delays in the operations of the FDA or other regulatory authorities, which may impact review and approval timelines;

 delays or disruptions in preclinical experiments and investigational new drug application-enabling studies due to restrictions of on-site staff and unforeseen circumstances at contract research
 organizations and vendors;

 interruption of, or delays in receiving, supplies of our product candidates from our contract manufacturing organizations due to staffing shortages, production slowdowns or stoppages and disruptions in
 delivery systems;

 limitations on our ability to recruit and hire key personnel due to our inability to meet with candidates because of travel restrictions and "shelter in place" orders;

 limitations on employee resources that would otherwise be focused on the conduct of our preclinical studies and clinical trials, including because of sickness of employees or their families or the desire of
 employees to avoid contact with large groups of people; and

 interruption or delays to our sourced discovery and clinical activities.

 Risks Related to Our Intellectual Property

 If we are unable to obtain and/or maintain patent protection for our Versamune, Versamune in combination with PDS01ADC platforms, PDS0101, other Versamune
 based Products or Infectimune, or if the scope of the patent protection obtained is not sufficiently broad, we may not be able to compete effectively in our markets.

 We rely upon a combination of patents, trade secret protection and confidentiality agreements to protect the intellectual property related to Versamune and Infectimune.
 Our success depends in large part on our ability to obtain and maintain patent protection in the United States and other countries. We seek to protect our proprietary position by filing patent applications in the United States and abroad
 related to Versamune, Versamune in combination with PDS01ADC and Infectimune based products. The patent prosecution process is expensive and time-consuming, and we may not be able to file and prosecute all necessary or desirable patent
 applications at a reasonable cost or in a timely manner.

 It is also possible that we will fail to identify patentable aspects of our research and development output before it is too late to obtain patent protection. The patent
 applications that we own or license may fail to result in issued patents with claims that cover Versamune, Versamune in combination with PDS01ADC and Infectimune based products or applications in the United States or in other countries.
 There is no assurance that all potentially relevant prior art relating to inventions, which can invalidate a patent or prevent a patent from issuing from a pending patent application, is known to us. Even if patents are issued to us, third
 parties may challenge their validity, enforceability or scope, which may result in such patents being narrowed, invalidated, or held unenforceable. Any successful challenge to these patents or any other patents owned by or licensed to us could
 deprive us of rights necessary for the successful commercialization of PDS0101 and other Versamune, Versamune in combination with PDS01ADC and Infectimune based products that we may develop. Further, if we encounter delays in regulatory
 approvals, the period of time during which we could exclusively market PDS0101 and other Versamune, Versamune in combination with PDS01ADC and Infectimune based products under patent protection could be reduced.

 The patent position of biotechnology and pharmaceutical companies generally is highly uncertain, involves complex legal and factual questions and has in recent years been
 the subject of much litigation. In addition, the laws of foreign countries may not protect our rights to the same extent as the laws of the United States. For example, European patent law restricts the patentability of methods of treatment of
 the human body more than U.S. law does. Publications of discoveries in scientific literature often lag behind the actual discoveries, and patent applications in the United States and other jurisdictions are typically not published until 18
 months after filing, or in some cases not at all. Therefore, we cannot know with certainty whether we were the first to make the inventions claimed in our owned or licensed patents or pending patent applications, or that we were the first to
 file for patent protection of such inventions. As a result, the issuance, scope, validity, enforceability and commercial value of our patent rights are highly uncertain. Our pending and future patent applications may not result in patents being
 issued which protect PDS0101 or other Versamune, Versamune in combination with PDS01ADC and Infectimune based products, in whole or in part, or which effectively prevent others from commercializing competitive technologies and
 immunotherapies. Changes in either the patent laws or interpretation of the patent laws in the United States and other countries may diminish the value of our patents or narrow the scope of our patent protection. Recent Russian Federal Law,
 No. 46-FZ of March 8, 2022, allows the Russian Government to designate goods for which IP rights are exempted and this rule applies to all IP rights, including trademarks, and this rule may affect our IP in the Russian Federation. There is no
 guidance on how broadly this rule will be applied, though the rule appears to be limited only to the year 2022.

 Moreover, we may be subject to a third-party pre-issuance submission of prior art to the U.S. Patent Office, or become involved in derivation, reexamination, inter parties
 review, post-grant review or interference proceedings challenging its patent rights or the patent rights of others. In other countries, we may be subject to or become involved in opposition proceedings challenging our patent rights or the
 patent rights of others. An adverse determination in any such submission or proceeding could reduce the scope of, or invalidate, our patent rights, allow third parties to commercialize our technology or immunotherapies and compete directly with
 us, without payment to us, or result in our inability to manufacture or commercialize PDS0101 without infringing third- party patent rights. In addition, if the breadth or strength of protection provided by our patents and patent applications
 is threatened, it could dissuade companies from collaborating with us to license, develop or commercialize PDS0101 and other Versamune, Versamune in combination with PDS01ADC and Infectimune based products.

 The issuance of a patent is not conclusive as to our inventorship, scope, validity or enforceability, and our owned and licensed patents may be challenged in the courts or
 patent offices in the United States and abroad. Such challenges may result in patent claims being narrowed, invalidated or held unenforceable, in whole or in part, which could limit our ability to stop others from using or commercializing
 similar or identical technology and immunotherapies, or limit the duration of the patent protection of our technology and immunotherapies. Moreover, patents have a limited lifespan. In the United States and other countries, the natural
 expiration of a patent is generally 20 years after it is filed. Various extensions may be available; however, the life of a patent, and the protection it affords, is limited. Without patent protection for PDS0101 and other Versamune,
 Versamune in combination with PDS01ADC and Infectimune based products, we may be open to competition from generic versions of PDS0101 or other similar products using our technology. Given the amount of time required for the development,
 testing and regulatory review of new immunotherapy candidates, patents protecting such candidates might expire before or shortly after such candidates are commercialized. As a result, our owned and licensed patent portfolio may not provide us
 with sufficient rights to exclude others from commercializing immunotherapies similar or identical to ours.

 We may have limited foreign intellectual property rights and may not be able to protect our intellectual property rights throughout the world.

 We may have limited intellectual property rights outside the U.S. Filing, prosecuting and defending patents on product candidates in all countries throughout the world
 would be prohibitively expensive, and our intellectual property rights in some countries outside the U.S. can be less extensive than those in the U.S. In addition, the laws of some foreign countries do not protect intellectual property rights
 to the same extent as federal and state laws in the U.S. Consequently, we may not be able to prevent third parties from practicing our inventions in all countries outside the U.S., or from selling or importing products made using our inventions
 in and into the U.S. or other jurisdictions. 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, but enforcement is not as strong as that in the U.S. These products may compete with our products and our patents or other intellectual property rights may not be effective or sufficient to prevent them from
 competing. Many companies have encountered significant problems in protecting and defending intellectual property rights in foreign jurisdictions. The legal systems of certain countries, particularly certain developing countries, do not favor
 the enforcement of patents, trade secrets and other intellectual property protection, particularly those relating to biopharmaceutical products, which could make it difficult for us to stop the infringement of our patents or marketing of
 competing products in violation of our proprietary rights generally. Proceedings to enforce our patent rights in foreign jurisdictions could result in substantial costs and divert our efforts and attention from other aspects of our business,
 could put our patents at risk of being invalidated or interpreted narrowly and our patent applications at risk of not issuing and could provoke third parties to assert claims against us. We may not prevail in any lawsuits that we initiate, and
 the damages or other remedies awarded, if any, may not be commercially meaningful. Accordingly, our efforts to enforce our intellectual property rights around the world may be inadequate to obtain a significant commercial advantage from the
 intellectual property that we develop or license.

 We may be involved in lawsuits to protect or enforce our patents, the patents of our licensors or our other intellectual property rights, or defend our
 products and methods against the property rights of others, which could be expensive, time consuming and unsuccessful.

 Competitors may infringe or otherwise violate our patents, the patents of our licensors or our other intellectual property rights. To counter infringement or unauthorized
 use, we may be required to file legal claims, which can be expensive and time-consuming. In addition, in an infringement proceeding, a court may decide that a patent of ours or our licensors is not valid or is unenforceable, or may refuse to
 stop the other party from using the technology at issue on the grounds that such patents do not cover the technology in question. An adverse result in any litigation or defense proceedings could put one or more of our patents at risk of being
 invalidated or interpreted narrowly and could put our patent applications at risk of not issuing. The initiation of a claim against a third-party may also cause the third-party to bring counter claims against us, such as claims asserting that
 our patents are invalid or unenforceable. In patent litigation in the United States, defendant counterclaims alleging invalidity or unenforceability are commonplace. Grounds for a validity challenge could be an alleged failure to meet any of
 several statutory requirements, including lack of novelty, obviousness, non-enablement or lack of statutory subject matter. Grounds for an unenforceability assertion could be an allegation that someone connected with prosecution of the patent,
 withheld relevant material information from the USPTO, or made a materially misleading statement, during prosecution. Third parties may also raise similar validity claims before the USPTO in post-grant proceedings such as inter partes review,
 or post-grant review, or oppositions or similar proceedings outside the United States, in parallel with litigation or even outside the context of litigation. The outcome following legal assertions of invalidity and unenforceability is
 unpredictable. We cannot be certain that there is no invalidating prior art, of which we and the patent examiner were unaware during prosecution. For the patents and patent applications that we have licensed, we may have limited or no right to
 participate in the defense of any licensed patents against challenge by a third-party. If a defendant were to prevail on a legal assertion of invalidity or unenforceability, we would lose at least part, and perhaps all, of any future patent
 protection on PDS0101 and other Versamune, Versamune in combination with PDS01ADC and Infectimune based products. Such a loss of patent protection could harm our business.

 We may also face claims that our products infringe patents that our competitors hold. Claims for alleged infringement and any resulting lawsuit, if successful, could
 subject us to significant liability for damages and invalidations of our proprietary rights. Any such lawsuit, regardless of our success, would likely be time consuming and expensive to resolve and would divert management time and attention.
 Any potential intellectual property litigation could also force us to do one or more of the following: (a) stop selling our products; (b) obtain a license(s), from the owner of any asserted intellectual property, to sell or use the relevant
 technology, which license may not be available on reasonable terms, or at all; or (c) redesign our products to avoid using the relevant technology.

 We may not be able to prevent, alone or with our licensors, misappropriation of our intellectual property rights, particularly in countries where the laws may not protect
 those rights as fully as in the United States. Our business could be harmed if in litigation the prevailing party does not offer us a license on commercially reasonable terms. Any litigation or other proceedings to enforce our intellectual
 property rights may fail, and even if successful, may result in substantial costs and distract our management and other employees.

 Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation, there is a risk that some of our confidential
 information could be compromised by disclosure during this type of litigation. There could also be public announcements of the results of hearings, motions or other interim proceedings or developments. If securities analysts or investors
 perceive these results to be negative, it could have an adverse effect on the price of our common stock.

 Changes in patent law in the United States and other jurisdictions could diminish the value of patents in general, thereby impairing our ability to
 protect our products.

 As is the case with other biotechnology companies, our success is heavily dependent on intellectual property, particularly patents. Obtaining and enforcing patents in the
 biotechnology industry involves both technological and legal complexity, and is therefore costly, time-consuming and inherently uncertain. Patent reform legislation in the United States and in other jurisdictions could increase those
 uncertainties and costs.

 The United States has enacted and implemented wide-ranging patent reform legislation. The United States Supreme Court has ruled on several patent cases in recent years, either
 narrowing the scope of patent protection available in certain circumstances or weakening the rights of patent owners in certain situations. In addition to increasing uncertainty with regard to our ability to obtain patents in the future, this
 combination of events has created uncertainty with respect to the value of patents, once obtained. Depending on actions by the U.S. Congress, the federal courts, and the USPTO, the laws and regulations governing patents could change in
 unpredictable ways that would weaken our ability to obtain new patents or to enforce patents that we have licensed or that we might obtain in the future.

 We may not be able to protect our intellectual property rights throughout the world, which could impair our business.

 Filing, prosecuting and defending patents covering Versamune, Versamune in combination with PDS01ADC and Infectimune based products throughout the world would be
 prohibitively expensive. Competitors may use our technologies in jurisdictions where we have not obtained patent protection to develop their own immunotherapies and, further, may export otherwise infringing immunotherapies to territories where
 we may obtain patent protection, but where patent enforcement is not as strong as that in the United States. These immunotherapies may compete with PDS0101 in jurisdictions where we do not have any issued or licensed patents and any future
 patent claims or other intellectual property rights may not be effective or sufficient to prevent them from so competing.

 Many countries, including European Union countries, India, Japan and China, have compulsory licensing laws under which a patent owner may be compelled under specified
 circumstances to grant licenses to third parties. In those countries, we may have limited remedies if patents are infringed or if we are compelled to grant a license to a third party, which could materially diminish the value of those patents.
 This could limit our ability to pursue strategic alternatives, including identifying and consummating transactions with potential third-party partners, to further develop, obtain marketing approval for and/or commercialize our drug candidates,
 and consequently our potential revenue opportunities. Accordingly, our efforts to enforce our intellectual property rights around the world may be inadequate to obtain a significant commercial advantage from the intellectual property that we
 develop or license.

 Our reliance on third parties requires us to share our trade secrets, which increases the possibility that a competitor will discover them or that our
 trade secrets will be misappropriated or disclosed.

 We seek to protect our proprietary technology in part by entering into confidentiality agreements with third parties and, if applicable, material transfer agreements,
 consulting agreements or other similar agreements with our advisors, employees, third-party contractors and consultants prior to beginning research or disclosing proprietary information. These agreements typically limit the rights of the third
 parties to use or disclose our confidential information, including our trade secrets. Despite the contractual provisions employed when working with third parties, the need to share trade secrets and other confidential information increases the
 risk that such trade secrets become known by our competitors, are inadvertently incorporated into the technology of others, or are disclosed or used in violation of these agreements. Given that our proprietary position is based, in part, on our
 know-how and trade secrets, a competitor's discovery of our trade secrets or other unauthorized use or disclosure would impair our competitive position and may have an adverse effect on our business and results of operations.

 In addition, these agreements typically restrict the ability of our advisors, employees, third-party contractors and consultants to publish data potentially relating to our
 trade secrets, although our agreements may contain certain limited publication rights. Despite our efforts to protect our trade secrets, our competitors may discover our trade secrets, either through breach of our agreements with third parties,
 independent development or publication of information by any of our third-party collaborators. A competitor's discovery of our trade secrets would impair our competitive position and have an adverse impact on our business.

 We may be subject to claims that our employees, consultants or independent contractors have wrongfully used or disclosed confidential information of third parties.

 We have received confidential and proprietary information from third parties and our employees and contractors. In addition, we employ or may employ individuals who were previously employed at
 other biotechnology or pharmaceutical companies. We may be subject to claims that we or our employees, consultants or independent contractors have inadvertently or otherwise used or disclosed confidential information of these third parties or
 our employees' former employers. Litigation may be necessary to defend against or pursue these claims. Even if we are successful in resolving these claims, litigation could result in substantial cost and be a distraction to our management and
 employees.

 General Market Risk Factors

 Our stock price is expected to be volatile, and the market price of our common stock may drop in the future.

 The market price of our common stock may be subject to significant fluctuations in the future. Market prices for securities of early-stage pharmaceutical, biotechnology and
 other life sciences companies have historically been particularly volatile. Some of the factors that may cause the market price of our common stock to fluctuate include:

 the ability of us and our partners to develop product candidates and conduct clinical trials that demonstrate such product candidates are safe and effective;

 the ability of us or our partners to obtain regulatory approvals for product candidates, and delays or failures to obtain such approvals;

 failure of any of our product candidates to demonstrate safety and efficacy, receive regulatory approval and achieve commercial success;

 failure by us to maintain our existing third-party license, manufacturing and supply agreements;

 failure by us or our licensors to prosecute, maintain, or enforce our intellectual property rights;

 changes in laws or regulations applicable to our product candidates;

 any inability to obtain adequate supply of product candidates or the inability to do so at acceptable prices;

 adverse regulatory authority decisions;

 introduction of new or competing products by our competitors;

 failure to meet or exceed financial and development projections we may provide to the public;

 the perception of the pharmaceutical industry by the public, legislatures, regulators and the investment community;

 announcements of significant acquisitions, strategic partnerships, joint ventures, or capital commitments by us or our competitors;

 disputes or other developments relating to proprietary rights, including patents, litigation matters, and our ability to obtain intellectual property protection for our technologies;

 additions or departures of key personnel;

 significant lawsuits, including intellectual property or stockholder litigation;

 if securities or industry analysts do not publish research or reports about us, or if they issue adverse or misleading opinions regarding our business and stock;

 if large short positions are taken in our stock and or negative reports are provided, whether they are based in fact or otherwise;

 changes in the market valuations of similar companies;

 general market or macroeconomic conditions;

 sales of our common stock by us or our stockholders in the future;

 trading volume of our common stock;

 adverse publicity relating to our markets generally, including with respect to other products and potential products in such markets;

 changes in the structure of health care payment systems; and

 period-to-period fluctuations in our financial results.

 Moreover, 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 our 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
 those companies. Such litigation, if instituted, could result in substantial costs and diversion of management attention and resources, which could significantly harm our profitability and reputation.

 We are required to meet the Nasdaq Capital Market's continued listing requirements and other Nasdaq rules, and if we fail to meet such rules and
 requirements, we may be subject to delisting. Delisting could negatively affect the price of our common stock, which could make it more difficult for us to sell securities in a future financing or for you to sell our common stock.

 We are required to meet the continued listing requirements of the Nasdaq Capital Market and other Nasdaq rules, including those regarding director independence and
 independent committee requirements, minimum stockholders' equity, minimum share price and certain other corporate governance requirements. In particular, we are required to maintain a minimum bid price for our listed common stock of $1.00 per
 share. If we do not meet these continued listing requirements, our common stock could be delisted. Delisting from the Nasdaq Capital Market would cause us to pursue eligibility for trading of these securities on other markets or exchanges,
 including the over-the-counter (OTC) BB or QB markets, or on the OTC "pink sheets." In such case, our stockholders' ability to trade, or obtain quotations of the market value of our common stock would be severely limited because of lower
 trading volumes and transaction delays. These factors could contribute to lower prices and larger spreads in the bid and ask prices of our securities. There can be no assurance that our securities, if delisted from the Nasdaq Capital Market in
 the future, would be listed on a national securities exchange, a national quotation service, the OTC markets or the pink sheets. Delisting from the Nasdaq Capital Market, or even the issuance of a notice of potential delisting, would also
 result in negative publicity, make it more difficult for us to raise additional capital, cause us to lose eligibility to register the sale or resale of our shares on Form S-3 and the automatic exemption from registration under state securities
 laws for exchange-listed securities, adversely affect the market liquidity of our securities, decrease securities analysts' coverage of us or diminish investor, supplier and employee confidence.

 We do not anticipate that we will pay any cash dividends in the foreseeable future.

 We currently expect to retain our future earnings, if any, to fund the development and growth of our business. As a result, capital appreciation, if any, of our company
 will be the sole source of our stockholders' gain, if any, for the foreseeable future.

 Future sales of shares by existing stockholders could cause our stock price to decline.

 If our existing stockholders sell, or indicate an intention to sell, substantial amounts of our common stock in the public market after certain legal restrictions on resale
 lapse, the trading price of our common stock could decline. As of December 31, 2023, we had 33,094,521 shares of common stock outstanding. Approximately 31,708,392 of such shares are freely tradable, without restriction, in the public market.
 Approximately 1,383,670 of such shares of common stock are held by directors, executive officers and other affiliates and will be subject to volume limitations under Rule 144 under the Securities Act and various vesting agreements.

 Because the Merger resulted in an ownership change under Section 382 of the Code for Edge, pre-merger U.S. net operating loss carryforwards and certain other
 tax attributes will be subject to limitations.

 On March 15, 2019, we, then operating as Edge Therapeutics, Inc., or Edge, completed a reverse merger with privately held PDS Biotechnology Corporation, or Private PDS,
 pursuant to and in accordance with the terms of the Agreement and Plan of Merger and Reorganization, dated as of November 23, 2018, as amended on January 24, 2019, by and among us, Echos Merger Sub, a wholly-owned subsidiary of Edge, or Merger
 Sub, and Private PDS, whereby Private PDS merged with and into Merger Sub, with Private PDS surviving as our wholly-owned subsidiary, which we refer to as the Merger. In connection with and immediately following completion of the Merger, we
 changed our corporate name from Edge Therapeutics, Inc. to PDS Biotechnology Corporation, and Private PDS changed its name to PDS Operating Corporation.

 As of December 31, 2018, prior to completion of the Merger, Edge had federal and state net operating loss carryforwards, or NOLs, of $128.6 million and $27.1 million,
 respectively, due to prior period losses. If a corporation undergoes an "ownership change" within the meaning of Section 382 of the Code, the corporation's U.S. net operating loss carryforwards and certain other tax attributes arising from
 before the ownership change are subject to limitations on use after the ownership change. In general, an ownership change occurs if there is a cumulative change in the corporation's equity ownership by certain stockholders that exceeds fifty
 percentage points over a rolling three-year period. Similar rules may apply under state and foreign tax laws. We believe that Edge may have already undergone one or more ownership changes prior to the Merger. However, the Merger also resulted
 in an ownership change for Edge and, accordingly, Edge's U.S. net operating loss carryforwards and certain other tax attributes available to us are subject to limitations on their use.

 Our effective tax rate may increase in the future, including as a result of tax legislation changes, which may have a material adverse effect on our
 business, financial condition and results of operations.

 Our effective tax rate may be impacted by changes in or interpretations of tax laws in the United States or in any given jurisdiction in which we operate, utilization of or
 limitations on our ability to utilize any tax credit carry-forwards, changes in geographical allocation of revenue and expense and changes in management's assessment of matters such as our ability to realize the value of deferred tax assets.

 In particular, the U.S. government may enact significant changes to the taxation of business entities including, among others, an increase in the corporate income tax rate,
 the imposition of minimum taxes or surtaxes on certain types of income, significant changes to the taxation of income derived from international operations, and an addition of further limitations on the deductibility of business interest. While
 certain draft legislation has been publicly released and is under development in Congress at this time, the likelihood of these changes being enacted or implemented is unclear.

 Our effective tax rate could also increase due to several factors, including:

 changes in tax rates, tax treaties, and regulations or the interpretation of them;

 changes to our assessment about our ability to realize deferred tax assets that are based on estimates of our future results, the prudence and feasibility of possible tax planning strategies, and the economic and political
 environments in which we do business;

 the outcome of any future tax audits, examinations, or administrati ve appeals; and

 the effects of an y acquisitions.

 There can be no assurance that our effective income tax rate will not change in future periods. Accordingly, if our effective tax rate were to increase, it may have a
 material adverse effect on our business, financial condition and results of operations.

 Anti-takeover provisions under Delaware law could make an acquisition more difficult and may prevent attempts by our stockholders to replace or remove
 our current or future management.

 Because we are incorporated in Delaware, our company is governed by the provisions of Section 203 of the DGCL, which prohibits stockholders owning in excess of 15% of our
 voting stock from merging or combining with us. Although we believe these provisions collectively will provide for an opportunity to receive higher bids by requiring potential acquirors to negotiate with our board of directors, they would apply
 even if the offer may be considered beneficial by some stockholders. In addition, these provisions may frustrate or prevent any attempts by our stockholders to replace or remove then current management by making it more difficult for
 stockholders to replace members of the board of directors, which is responsible for appointing the members of management.

 Our eighth amended and restated certificate of incorporation, as amended, provides that, unless we consent to the selection of an alternative forum, the Court of Chancery
 of the State of Delaware is the sole and exclusive forum, to the fullest extent permitted by law, for: (a) any derivative action or proceeding brought on our behalf; (b) any action asserting a claim of breach of a fiduciary duty owed by any of
 our directors, officers or other employees to us or our stockholders; (c) any action asserting a claim arising pursuant to the DGCL, our eighth amended and restated certificate of incorporation, as amended, or our amended and restated bylaws;
 or (d) any action asserting a claim against us governed by the internal affairs doctrine. This choice of forum provision does not preclude or contract the scope of exclusive federal or concurrent jurisdiction for any actions brought under the
 Securities Act or the Exchange Act. Accordingly, our exclusive forum provision will not relieve us of our duties to comply with the federal securities laws and the rules and regulations thereunder, and our stockholders will not be deemed to
 have waived our compliance with these laws, rules and regulations.

 Any person or entity purchasing or otherwise acquiring any interest in any of our securities shall be deemed to have notice of and consented to these provisions. These
 exclusive-forum provisions may limit a stockholder's ability to bring a claim in a judicial forum of its' choosing for disputes with us or our directors, officers or other employees, which may discourage lawsuits against us and our directors,
 officers and other employees.

 If a court were to find the choice of forum provision contained in our eighth amended and restated certificate of incorporation, as amended, to be inapplicable or
 unenforceable in an action, we may incur additional costs associated with resolving such action in other jurisdictions, which could harm our business, results of operations, and financial condition. Even if we are successful in defending
 against these claims, litigation could result in substantial costs and be a distraction to management and other employees.

 Provisions in our amended and restated bylaws could limit our stockholders' ability to obtain a favorable judicial forum for disputes with us or our
 directors, officers or employees.

 Our amended and restated bylaws provide that, unless we consent in writing to the selection of an alternative forum, the federal district courts of the U.S. shall be the
 exclusive forum for the resolution of any complaint asserting a cause of action under the Securities Act. This provision limits the ability of our stockholders to bring claims under the Securities Act in any court other than the U.S. federal
 courts, which ultimately may disadvantage our stockholders or be cost prohibitive. Notwithstanding the foregoing, there is uncertainty as to whether a court (other than state courts in the State of Delaware, which have recently upheld the
 validity of such a provision) would enforce such a provision and whether investors can waive compliance with the federal securities laws and the rules and regulations thereunder. Furthermore, the exclusive forum provision only applies to claims
 brought under the Securities Act and does not apply to actions arising under the Exchange Act, which is already subject to federal courts as the exclusive forum.

 If a court were to find these provisions of our amended and restated bylaws inapplicable to, or unenforceable in respect of, one or more of the specified types of actions
 or proceedings, we may incur additional costs associated with resolving such matters in other jurisdictions, which could adversely affect our business, results of operations and financial condition. Even if we are successful in defending
 against these claims, litigation could result in substantial costs and be a distraction to management and other employees.

 We are currently operating in a period of economic uncertainty and capital markets disruption, which has been significantly impacted by geopolitical
 instability, an ongoing military conflict between Russia and Ukraine, Israel and Hamas and record inflation. Our business, financial condition and results of operations could be materially adversely affected by any negative impact on the global
 economy and capital markets resulting from the conflict in Ukraine, the Middle East, geopolitical tensions or record inflation.

 U.S. and global markets are experiencing volatility and disruption following the escalation of geopolitical tensions and the start of the military conflict between Russia
 and Ukraine. On February 24, 2022, a full-scale military invasion of Ukraine by Russian troops was reported. Although the length and impact of the ongoing military conflict is highly unpredictable, the conflict in Ukraine could lead to market
 disruptions, including significant volatility in commodity prices, credit and capital markets, as well as supply chain interruptions, which has led to record inflation globally. We are continuing to monitor inflation, the situation in Ukraine
 and global capital markets and assessing the potential impacts on our business.

 The global economy has been, and may continue to be, negatively impacted by Russia's invasion of Ukraine. As a result of Russia's invasion of Ukraine, the U.S., the
 European Union, the United Kingdom, and other G7 countries, among other countries, have imposed substantial financial and economic sanctions on certain industry sectors and parties in Russia. Broad restrictions on exports to Russia have also
 been imposed. These measures include: (i) comprehensive financial sanctions against major Russian banks; (ii) additional designations of Russian individuals with significant business interests and government connections; (iii) designations of
 individuals and entities involved in Russian military activities; and (iv) enhanced export controls and trade sanctions limiting Russia's ability to import various goods. Russian military actions and the resulting sanctions could continue to
 adversely affect the global economy and financial markets and lead to instability and lack of liquidity in capital markets, potentially making it more difficult for us to obtain additional funds.

 There are current geopolitical tensions with China. Recently, the Biden administration has signed multiple executive orders regarding China. One particular executive order
 titled Advancing Biotechnology and Biomanufacturing Innovation for a Sustainable, Safe, and Secure American Bioeconomy signed on September 12, 2022 will likely impact the pharmaceutical industry to encourage U.S. domestic manufacturing of
 pharmaceutical products. Any additional executive orders or potential sanctions with China could materially impact our current manufacturing partners.

 In addition, on October 7, 2023, Hamas militants and members of other terrorist organizations infiltrated Israel's southern border from the Gaza Strip and conducted a
 series of terror attacks on civilian and military targets. Thereafter, Hamas launched extensive rocket attacks on Israeli population and industrial centers located along the Israeli border within the Gaza Strip. Shortly following the attack,
 Israel's security cabinet declared war against Hamas and launched an aerial bombardment of various targets within the Gaza Strip. It is possible that other terrorist organizations will join the hostilities as well, including Hezbollah in
 Lebanon, the Houthi in Yemen and Palestinian military organizations in the West Bank, resulting in a widening of the conflict. The intensity and duration of Israel's current war against Hamas is difficult to predict as are such war's economic
 implications on the global economy.

 Although our business has not been materially impacted by the ongoing military conflict between Russian and Ukraine, Israel and Hamas, geopolitical tensions, or record inflation to date, it is
 impossible to predict the extent to which our operations, or those of our suppliers and manufacturers, will be impacted in the short and long term, or the ways in which the conflict may impact our business. The extent and duration of the
 conflict in Ukraine, the Middle East, geopolitical tensions, record inflation, sanctions and resulting market disruptions are impossible to predict, but could be substantial. Any such disruptions may also magnify the impact of other risks
 described herein.

 Our results of operations and liquidity needs could be materially affected by market fluctuations and general economic conditions.

 Our results of operations could be materially affected by economic conditions generally, both in the United States and elsewhere around the world. Concerns over inflation,
 energy costs, geopolitical issues, and the availability and cost of credit have in the past and may continue to contribute to increase volatility and diminished expectations of the economy and markets going forward. Market upheavals may have an
 adverse effect on us. In the event of a market downturn, our results of operations could be adversely affected. Our future cost of equity or debt capital and access to the capital markets could be adversely affected, and our stock price could
 decline. There may be disruption or delay in the performance of our third-party contractors and suppliers. If our contractors, suppliers and partners are unable to satisfy their contractual obligations, our business could suffer.

 Adverse developments affecting the financial services industry, such as actual events or concerns involving liquidity, defaults or non-performance by financial institutions or
 transactional counterparties, could adversely affect our current and projected business operations and our financial condition and results of operations.

 Actual events involving limited liquidity, defaults, non-performance or other adverse developments that affect financial institutions, transactional counterparties or other companies in the
 financial services industry or the financial services industry generally, or concerns or rumors about any events of these kinds or other similar risks, have in the past and may in the future lead to market-wide liquidity problems. For example, on
 March 10, 2023, Silicon Valley Bank, or SVB, was closed by the California Department of Financial Protection and Innovation, which appointed the Federal Deposit Insurance Corporation, or the FDIC, as receiver. Similarly, on March 12, 2023,
 Signature Bank and Silvergate Capital Corp. were each swept into receivership. Although a statement by the Department of the Treasury, the Federal Reserve and the FDIC stated that all depositors of SVB would have access to all of their money
 after only one business day of closure, including funds held in uninsured deposit accounts, borrowers under credit agreements, letters of credit and certain other financial instruments with SVB, Signature Bank or any other financial institution
 that is placed into receivership by the FDIC may be unable to access undrawn amounts thereunder. If any of our counterparties to any such instruments were to be placed into receivership, we may be unable to access such funds. In addition, if any
 parties with whom we conduct business are unable to access funds pursuant to such instruments or lending arrangements with such a financial institution, such parties' ability to pay their obligations to us or to enter into new commercial
 arrangements requiring additional payments to us could be adversely affected. In this regard, counterparties to SVB credit agreements and arrangements, and third parties such as beneficiaries of letters of credit (among others), may experience
 direct impacts from the closure of SVB and uncertainty remains over liquidity concerns in the broader financial services industry. Similar impacts have occurred in the past, such as during the 2008-2010 financial crisis.

 Inflation and rapid increases in interest rates have led to a decline in the trading value of previously issued government securities with interest rates below current market interest rates.
 Although the U.S. Department of Treasury, FDIC and Federal Reserve Board have announced a program to provide up to $25 billion of loans to financial institutions secured by certain of such government securities held by financial institutions to
 mitigate the risk of potential losses on the sale of such instruments, widespread demands for customer withdrawals or other liquidity needs of financial institutions for immediately liquidity may exceed the capacity of such program. There is no
 guarantee that the U.S. Department of Treasury, FDIC and Federal Reserve Board will provide access to uninsured funds in the future in the event of the closure of other banks or financial institutions, or that they would do so in a timely
 fashion.

 Although we assess our banking relationships as we believe necessary or appropriate, our access to funding sources and other credit arrangements in amounts adequate to finance or capitalize our
 current and projected future business operations could be significantly impaired by factors that affect us, the financial institutions with which we have arrangements directly, or the financial services industry or economy in general. These
 factors could include, among others, events such as liquidity constraints or failures, the ability to perform obligations under various types of financial, credit or liquidity agreements or arrangements, disruptions or instability in the
 financial services industry or financial markets, or concerns or negative expectations about the prospects for companies in the financial services industry. These factors could involve financial institutions or financial services industry
 companies with which we have financial or business relationships, but could also include factors involving financial markets or the financial services industry generally.

 In addition, investor concerns regarding the U.S. or international financial systems could result in less favorable commercial financing terms, including higher interest rates or costs and
 tighter financial and operating covenants, or systemic limitations on access to credit and liquidity sources, thereby making it more difficult for us to acquire financing on acceptable terms or at all. Any decline in available funding or access
 to our cash and liquidity resources could, among other risks, adversely impact our ability to meet our operating expenses, financial obligations or fulfill our other obligations, result in breaches of our financial and/or contractual obligations
 or result in violations of federal or state wage and hour laws. Any of these impacts, or any other impacts resulting from the factors described above or other related or similar factors not described above, could have material adverse impacts on
 our liquidity and our current and/or projected business operations and financial condition and results of operations.

 In addition, any further deterioration in the macroeconomic economy or financial services industry could lead to losses or defaults by parties with whom we conduct business, which in turn, could
 have a material adverse effect on our current and/or projected business operations and results of operations and financial condition. For example, a party with whom we conduct business may fail to make payments when due, default under their
 agreements with us, become insolvent or declare bankruptcy. Any bankruptcy or insolvency, or the failure to make payments when due, of any counterparty of ours, or the loss of any significant relationships, could result in material losses to us
 and may material adverse impacts on our business.

 ITEM 1B.

 Unresolved Staff Comments

 None.

 ITEM 1C.

 Cybersecurity

 Risk Management and Strategy

 We assess material risks from cybersecurity threats on an ongoing basis, including any potential unauthorized access to or occurrence on or conducted through our information
 systems that may result in adverse effects on the confidentiality, integrity, or availability of our information systems or any information residing therein. As we grow, we plan to develop a more robust and detailed strategy for cybersecurity in
 alignment with nationally accepted standards.

 Our cybersecurity program is overseen by our head of human resources, information technology (IT) and facilities, who manages our third-party providers of IT services. We
 have engaged contractors to provide cybersecurity standards, architecture and processes. As part of our service agreement with our contractors, we receive identification and reporting of risks to our management and board. Our information
 technology team maintains a security operations center intended to identify anomalous activity. Further, our policies require all employees to notify our compliance, legal or information technology functions in the event of a cybersecurity
 incident.

 As of the date of this Annual Report on Form 10-K, we are not aware of any cybersecurity threats, including as a result of any previous cybersecurity incidents, that have
 materially affected us, including our business strategy, results of operations or financial condition. Our business depends on the availability, reliability and security of our and our third-party contractors' information systems, networks and
 data.

 As discussed under "Risk Factors" in Part I, Item 1A of this Annual Report, cybersecurity threats pose multiple risks to us, including potentially to our results of
 operations and financial condition. For additional information concerning risks related to cybersecurity, see Item 1.A. Risk Factors: "Our business and operations would
 suffer, and could be negatively affected, in the event of system failures or cyberattacks."

 Governance

 Our management oversees and reviews any reports of cybersecurity risks or breaches provided by our third-party providers of IT services. Additionally, management assesses
 potential improvements to our cybersecurity policies and procedures based on recommendations from third-party experts, including our providers of IT services, in a matter that's suitable for a company our size and nature.

 One of our Board's key functions is informed oversight of our risk management process, including risks from cybersecurity threats. The Board does not have a standing risk
 management committee, but rather administers this oversight function directly through the Board as a whole, as well as through various Board standing committees that address risks inherent in their respective areas of oversight. Our Audit
 Committee has the responsibility to review and discuss with management and KPMG LLP, the Company's independent auditors, as appropriate, our guidelines and policies with respect to risk assessment and risk management, including our major
 financial risk exposures and the steps taken by management to monitor and control these exposures, including as it concerns risks from cybersecurity threats. In general, we seek to address cybersecurity risks through a cross-functional approach
 that is focused on preserving the confidentiality, integrity, and availability of the information that we collect and store by identifying, preventing, and mitigating cybersecurity threats and effectively responding to cybersecurity incidents
 when they occur.

 ITEM 2.

 Properties

 We maintain a month-to-month lease for our research facilities at the Princeton Innovation Center BioLabs located at 303A College Road E, Princeton, NJ 08540.

 On March 10, 2020, we entered into a sublease agreement, effective as of March 5, 2020, to occupy our corporate and executive office located at 25B Vreeland Road, Suite
 300, Florham Park, NJ. The sublease commenced on May 1, 2020 and continues for a term of approximately forty (40) months with an option to renew through October 31, 2027. On March 17, 2020, the master lessor provided its consent to the sublease
 in accordance with the terms of the sublease. This lease expired in August of 2023 and was not renewed.

 We believe our current facilities are suitable and adequate to meet our current needs.

 ITEM 3.

 Legal Proceedings

 The information in Note 11 to the Consolidated Financial Statements contained in Part IV, Item 15 of this Annual Report on Form 10-K is incorporated herein by reference.
 There are no matters which constitute material pending legal proceedings to which we are a party other than those incorporated into this item by reference from Note 11 to our Consolidated Financial Statements for the year ended December 31, 2023
 contained in this Annual Report on Form 10-K.

 ITEM 4.

 Mine Safety Disclosures

 Not applicable.

 ITEM 5.

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

 Market Information

 Our common stock is listed on the Nasdaq Capital Market under the symbol "PDSB".

 Holders

 As of March 20, 2024, there were 41 stockholders of record, which excludes stockholders whose shares were held in nominee or street name by brokers.

 Dividends

 We have never declared or paid any cash dividends on our common stock and do not anticipate paying any cash dividends in the foreseeable future. Any future determination to
 pay dividends will be at the discretion of our board of directors, subject to applicable laws, and will depend on a number of factors, including our financial condition, results of operations, capital requirements, contractual restrictions,
 general business conditions, and any other factors that our board may deem relevant.

 Equity Compensation Plans

 Information regarding our equity compensation plans is incorporated by reference from the information in our Proxy Statement for our 2024 Annual Meeting of Stockholders,
 which we will file with the SEC within 120 days after the end of the fiscal year to which this Annual Report on Form 10-K relates.

 Issuer Purchases of Equity Securities

 We did not purchase any of our registered equity securities during the period covered by this Annual Report.

 ITEM 7.

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

 You should read the following discussion and analysis of our financial condition and results of operations together with our consolidated financial
 statements and related notes appearing elsewhere in this Annual Report. In addition to historical information, this discussion and analysis contains forward-looking statements that involve risks, uncertainties and assumptions. Our actual
 results may differ materially from those anticipated in these forward-looking statements as a result of certain factors. We discuss factors that we believe could cause or contribute to these differences below and elsewhere in this Annual
 Report, including those set forth under Item 1A. "Risk Factors" and under "Forward-Looking Statements" in this Annual Report.

 Introduction to PDS Biotechnology Corporation

 We are a clinical-stage immunotherapy company developing a growing pipeline of targeted cancer and infectious disease immunotherapies based on our Versamune, Versamune in
 combination with our IL-12 fused anti-body drug conjugate (ADC) PDS01ADC (formerly known as PDS0301/M9241/NHS-IL-12) and Infectimune T cell-activating platforms and PDS01ADC tumor targeting immunocytokine. We believe our targeted
 immunotherapies have the potential to overcome the limitations of current immunotherapy approaches through the activation of the right type, quantity and potency of T cells. Versamune, and Versamune in combination with PDS01ADC are utilized
 for treatments in oncology and Infectimune, for treatments in infectious disease. When paired with an antigen, which is a disease-related protein that is recognizable by the immune system, Versamune and Infectimune have both been shown to
 induce, in vivo, large quantities of high-quality, highly potent polyfunctional CD4 helper and CD8 killer T cells, a specific sub-type of T cell that is more effective at killing infected or target
 cells. Infectimune is also designed to promote the induction of disease-specific neutralizing antibodies. PDS01ADC is an investigational tumor targeting IL-12 that we believe may enhance the proliferation, potency and longevity of T cells in
 the tumor microenvironment. Based on preclinical studies and recent investigational clinical data, we believe that Versamune in combination with PDS01ADC may enhance the proliferation, potency and longevity of antigen specific multifunctional
 CD8 T cells in the tumor microenvironment and work synergistically to overcome tumor immune suppression.

 In July 2022, we announced the presentation of universal flu vaccine preclinical data for PDS0202 at the 41 st American

 Society of Virology meeting: Abstract number 3733830, Infectimune enhances antibodies elicited by COBRA hemagglutinin influenza vaccine.

 In November 2022, we announced the presentation of data from two Phase 2 clinical trials at the 37 th Annual
 Meeting for the Society of Immunotherapy of Cancer (SITC): Abstract number 674, IMMUNOCERV, an ongoing Phase 2 trial combining PDS0101, an HPV-specific T cell immunotherapy, with chemotherapy and radiation for treatment of locally advanced
 cervical cancers and abstract number 695, Immune correlates associated with clinical benefit in patients with checkpoint refractory HPV-associated malignancies treated with triple combination immunotherapy.

 In December 2022, we executed an exclusive global license agreement with Merck KGaA, Darmstadt, Germany for the tumor targeting IL-12 fused antibody drug conjugate, M9241, which joined our
 pipeline as PDS01ADC. PDS01ADC is a novel investigational tumor-targeting fusion protein of Interleukin 12 that enhances the proliferation, potency, infiltration and longevity of T cells in the tumor microenvironment and is therefore designed to
 overcome the limitations of cytokine therapy which today have resulted in high toxicity and limited therapeutic potential. The proprietary combination of Versamune and PDS01ADC is designed to overcome tumor immune suppression utilizing a
 different mechanism from immune checkpoint inhibitors (ICI). The combination of Versamune and PDS01ADC to overcome immune suppression is patented by us, and we believe our ownership of both assets will
 streamline the clinical development, registrational process and their potential therapeutic use. In a Phase 2 National Cancer Institute (NCI)-led clinical trial in ICI resistant patients, the combination of
 PDS0101 and PDS01ADC administered with an investigational bi-functional ICI resulted in a median overall survival of approximately 20 months. The historical median survival reported in ICI resistant HPV-positive cancers when treated with ICIs
 is 3-4 months, and best reported median survival to date with systemic therapy is 8.2 months in ICI resistant head and neck cancer.

 In February 2023, we announced a successful completion of a Type B meeting with the FDA for the triple combination of PDS0101 and PDS01ADC with an FDA-approved immune
 checkpoint inhibitor for the treatment of recurrent/metastatic, ICI resistant head and neck cancer that is positive for the HPV type 16. In recent interactions with the FDA, we confirmed the required contents of a clinical protocol for the
 potential registrational trial.

 In June 2023, an abstract was presented at the 2023 American Society of Clinical Oncology: Abstract number 6012, Safety and Efficacy of Immune Checkpoint Inhibitor (ICI) Na ve Cohort from Study
 of PDS0101 and Pembrolizumab in HPV16-Positive Head and Neck Squamous Cell Carcinoma (HNSCC). The abstract was also selected as one of the featured posters reviewed by an expert panel in the Head and Neck Cancer discussion session.

 In September 2023, data on our investigational universal flu vaccine, PDS0202, was presented at the 9 th European
 Scientific Working Group on Influenza (ESWI) conference. This data demonstrated broad neutralization across multiple influenza strains in animals and provided protection against infection after challenging animals not previously exposed to flu
 with lethal doses of the pandemic H1N1 flu virus.

 In October 2023, data demonstrating PDS0101 in combination with standard-of-care (SOC) chemoradiotherapy was associated with a rapid decline in human papillomavirus circulating cell-free DNA
 (ctHPV-DNA), a potential predictive biomarker of treatment response. The data from the IMMUNOCERV Phase 2 clinical trial were featured in an oral presentation at the American Society for Radiation Oncology Annual Meeting.

 In October 2023, updated interim data based on an August 2 nd cut off from our VERSATILE-002 Phase 2 clinical trial
 evaluating the combination of PDS0101 in combination with Merck's anti-PD-1 therapy, Keytruda (pembrolizumab) which is the FDA-approved standard of care for first-line treatment of recurrent/ metastatic head and neck cancer was presented at a
 Company-sponsored key opinion leader roundtable.

 In October 2023, interim safety and immune response data was presented for the first-in-human Phase1/2 clinical trial evaluating PDS01ADC in combination with current SOC chemotherapy, docetaxel,
 to treat metastatic castration sensitive and castration resistant prostate cancer. The data was featured in an oral presentation at the 11 th Annual Meeting of the
 International Cytokine & Interferon Society.

 In October 2023, immune response data from a preliminary analysis of a subset of patients in our VERSATILE-002 Phase 2 clinical trial was presented at the European Society for Medical Oncology
 Congress 2023.

 In November 2023, we announced updated survival data from our NCI-led Phase 2 trial investigating the triple combination of PDS0101, PDS01ADC and an investigational immune checkpoint inhibitor
 (ICI) in two groups of advanced cancer patients with various types of human papillomavirus (HPV) 16-positive cancers.

 In November 2023, we announced updated interim survival data from our NCI-led Phase 2 triple combination trial.

 In November 2023, preclinical data from our NCI-led trial including PDS0101, PDS01ADC and an HDAC inhibitor in ICI-resistant HPV-16 positive cancer was presented during a poster presentation at
 the Society for Immunotherapy of Cancer 38 th Annual Meeting.

 Clinical Candidate Pipeline

 National Cancer Institute: PDS0101+ M9241 (now PDS01ADC) +Bintrafusp Alfa

 In June 2020, the first patient was dosed under a PDS0101 Cooperative Research and Development Agreement (CRADA), in the NCI led Phase 2 investigator-initiated trial evaluating PDS0101 with an
 IL-12 ADC now PDS01ADC, and M7824 (Bintrafusp alfa), which is owned by EMD Serono (Merck KGaA) in patients with advanced HPV-positive cancers who have failed prior treatment. In February 2021, the NCI's Phase 2 clinical trial of PDS0101 for the
 treatment of advanced HPV-positive cancers had achieved its preliminary objective response target in patients na ve to check point inhibitors which allowed for full enrollment of approximately 20 patients in this group. In addition, based on
 promising results in the ICI na ve arm, the trial was amended to allow enrollment of a separate cohort of IC -resistant patients for assessment of safety and activity of the triple combination. The trial has been closed for enrollment.
 Preliminary efficacy assessment of the triple combination in this added group of 29 ICI resistant patients has been completed and evaluation of long-term patient survival is ongoing.

 Preclinical study results arising from this CRADA were published in the Journal for ImmunoTherapy of Cancer, Immunomodulation to enhance the efficacy of an HPV
 therapeutic vaccine (Journal for ImmunoTherapy of Cancer2020;8:e000612. Doi:10.1136/ jitc-2020-000612), and indicate that PDS0101 generated both HPV-specific T cells and an associated antitumor response when used as a monotherapy. When PDS0101 was combined with the two other novel clinical-stage anti-cancer agents, Bintrafusp Alfa and M9241 (which
 is now owned by us and referred to as PDS01ADC), the preclinical data suggested that all three therapeutic agents worked synergistically to provide superior tumor T cell responses and subsequent tumor
 regression when compared to any of the agents alone or the 2-component combinations. The published preclinical data demonstrating powerful activity of the triple combination appears to be corroborated in
 the Phase 2 trial, and this triple combination could form the basis of a unique platform providing improved cancer treatments across multiple cancers.

 In June 2022, at the 2022 ASCO Annual Meeting, the NCI provided an update to the preliminary data presented at the 2021 meeting (Strauss J et al. J Clin Oncol 40, 2022 [suppl 16; abstr 2518]). This included data from 30 HPV16-positive patients and highlights were as follows:

 Objective response (OR = > 30% tumor reduction) was seen in 88% (7/8) of patients with ICI naive disease; 4/7 (57%) patients' responses are ongoing (median 17 months).

 With ICI resistant patients: PDS01ADC dosing appears to affect response rates, with 5/8 (63%) patients receiving PDS01ADC at 16.8 mcg/kg achieving an OR compared to 1/14 (7%) patients who received PDS01ADC
 at 8 mcg/kg achieving an OR; 4/6 (67%) patients' responses are ongoing (median 12 months).

 Tumor reduction was seen in 45% (10/22) of patients with ICI resistant disease, including patients receiving high or low dose PDS01ADC.

 In ICI resistant patients treated with high or low dose PDS01ADC, survival outcomes were similar (p=0.96 by Kaplan Meier analysis). At a median of 12 months of follow up 17/22 (77%) of patients were alive.

 In ICI na ve patients 6/8 (75%) were alive at median 17 months of follow up.

 Similar OR and survival were seen across all types of HPV16-positive cancers.

 Preliminary safety data: 13/30 (43%) of patients experienced Grade 3 treatment-related adverse events (AEs), and 2/30 patients (7%) experienced Grade 4 AEs. There were no grade 5 treatment-related AEs.

 We believe the trial results to date strongly suggest, in agreement with the published preclinical studies, that all 3 drugs contribute to the clinical outcomes.

 In September 2022, we determined, in agreement with the NCI, to select the ICI resistant patients as the preferred treatment group in the on-going PDS0101-based triple
 combination therapy in advanced HPV-positive cancers and the trial was closed to further enrollment given the ICI resistant arm had been fully recruited.

 In October 2022, we presented additional interim data as follows:

 Survival data: 66% (19/29) of HPV16-positive ICI resistant patients in the cohort were alive at a median follow up of 16 months.

 Safety profile: 48% (24/50) patients experienced Grade 3 treatment-related adverse events (AEs), and 4% (2/50) patients experienced Grade 4 AEs. There were no Grade 5 treatment-related AEs.

 HPV16-positive ICI na ve patients: 75% (6/8) were alive at a median follow up of 25 months and 38% (3/8) of responders had a complete response.

 In December 2022, we presented interim data as follows:

 Median OS was 21 months in 29 checkpoint inhibitor resistant patients who received the triple combination. The reported historical median OS in patients with ICI resistant disease is 3-4 months seen with
 checkpoint inhibitors and best reported median survival to date with systemic therapy of 8.2 months in ICI resistant head and neck cancer.

 In ICI na ve subjects, 75% remain alive at a median follow-up of 27 months. As a result, median OS had not yet been reached. Historically median OS for similar patients with platinum experienced ICI na ve
 disease is 7-11 months.

 Objective response rate (ORR) in ICI resistant patients who received the optimal dose of the triple combination is 63% (5/8). In current approaches ORR is reported to be less than 10%.

 ORR in ICI na ve patients with the triple combination is 88%. In current approaches ORR is reported to be less than 25% with FDA-approved ICIs in HPV-positive cancers.

 Safety data had not changed since October's update. 48% (24/50) of patients experienced Grade 3 (moderate) treatment-related adverse events (AEs), and 4% (2/50) patients experienced Grade 4 (severe) AEs,
 compared with approximately 70% of patients receiving the combination of ICIs and chemotherapy reporting Grade 3 and higher treatment-related AEs..

 In February 2023, we announced the successful completion of a Type B meeting with the FDA for the combination therapy of PDS0101, PDS01ADC, and an FDA-approved immune
 checkpoint inhibitor for the treatment of recurrent/metastatic HPV-positive ICI-resistant head and neck cancer. We confirmed the required contents of the trial design for a potential registrational trial of the combination.

 In November 2023, we released updated interim survival data as follows:

 75% of immune checkpoint inhibitor (ICI) na ve patients remain alive at 36 months; published median overall survival (OS) in similar patients is 7-11 months

 12-month survival rate in (ICI) resistant patients of 72%

 Median OS in ICI resistant HPV-positive patients is approximately 20 months; published median OS is 3.4 months

 VERSATILE-002: PDS0101 + Keytruda

 In November 2020, our VERSATILE-002 Phase 2 clinical trial evaluating the combination of PDS0101 in combination with Merck's anti-PD-1 therapy, Keytruda (pembrolizumab) which is the
 FDA-approved standard of care for first-line treatment of recurrent/ metastatic head and neck cancer commenced. Enrollment in stage 2 of 2 for the ICI na ve arm and the ICI resistant arms are complete. The clinical trial will evaluate the
 efficacy and safety of this therapeutic combination as a first and second line treatment in patients with recurrent or metastatic head and neck cancer and high-risk human papillomavirus-16 (HPV16) infection.

 In this trial sponsored by PDS Biotech, patients whose cancer has returned following initial treatment or spread will be treated with the combination of PDS0101 and Keytruda to evaluate if the addition of PDS0101 might improve the efficacy reported in published studies of Keytruda alone. Patients in the trial will receive a total of 5 cycles of
 combination therapy in the context of standard of care Keytruda therapy administered every three weeks until disease progression. The primary endpoint of VERSATILE-002 is the objective response rate, or
 ORR, at six months following initiation of treatment. There are two cohorts in the trial. Cohort 1 is for patients who have yet to be treated with an immune checkpoint inhibitor (ICI na ve) and cohort 2
 which consists of patients who have failed immune checkpoint inhibitor therapy (ICI resistant).

 In February 2022, we achieved the preliminary efficacy milestone of at least four or more objective responses of the first 17 patients in the ICI na ve arm that allowed that arm to proceed to
 full enrollment. We also announced detailed preliminary safety data which showed that the combination is well tolerated without evidence of enhanced or significant toxicity in the first 18 patients in the ICI na ve arm. We have completed enrollment in Stage 1 of the ICI resistant arm and we are waiting for sufficient follow up to conduct the futility analysis.

 In June 2022, we presented additional preliminary efficacy and safety data from this trial at the ASCO Annual Meeting (Weiss J et al. J Clin Oncol 40, 2022
 (suppl 16; abstr 6041)). The abstract provided preliminary data on 19 patients (safety) with available imaging data for 17 of the 19 patients (efficacy). Data on 17 patients was presented. Highlights from the abstract were as follows:

 Confirmed and unconfirmed response rates thus far (tumor shrinkage greater than 30%) seen in 7/17 (41.2%) patients in comparison to the published results of approximately 19% for approved ICIs, used as monotherapy for recurrent or
 metastatic head and neck cancer, with 2 of the 7 having complete responses (CR)

 Stable disease (SD) was reported in 6/17 (35.3%) patients, with 4 of the 6 (67%) experiencing tumor shrinkage of less than 30%

 Clinical efficacy (ORR + SD) was seen in 13/17 (76.5%) patients

 Progressive/ongoing disease was reported in 4/17 (23.5%) patients

 Patients had received a median of 4/5 doses of PDS0101 (range 1-5) and 9/35 doses of Keytruda (range 1-18)

 There were no treatment-related adverse events greater than or equal to Grade 3 (N=19)

 No patients required dose interruption or reduction on the combination treatment

 No patients discontinued the combination treatment

 At 9 months of follow up (median not yet achieved):

 Progression free survival (PFS) rate was 55.2%

 Overall survival (OS) rate was 87.2%

 no control or comparative studies have been conducted between ICIs and PDS0101

 In May 2022, we expanded this trial into Europe and in June 2022, as described above, we received Fast Track designation from the U.S. FDA for PDS0101 in combination with Keytruda.

 In August 2022, our independent Data Monitoring Committee (DMC) met and evaluated data from 43 patients and noted there were no Grade 3 or greater treatment-related adverse events attributed to
 the combination. The DMC recommended continuing the trial with no modifications.

 In October 2022, we announced the results of an end-of-phase 2 meeting with the FDA for PDS0101 in combination with Keytruda. We have completed the plan for a potential Phase 3 clinical
 program that will support the submission of a BLA for PDS0101 and have submitted our plan to the FDA.

 In In May 2023, we completed enrollment in the ICI na ve arm. We filed our amended IND with the FDA in the third quarter of 2023. In October 2023, we received feedback from
 the FDA on the amended IND.

 In June 2023, an abstract was presented at the 2023 American Society of Clinical Oncology: Abstract number 6012, Safety and Efficacy of Immune
 Checkpoint Inhibitor (ICI) Na ve Cohort from Study of PDS0101 and Pembrolizumab in HPV16-Positive Head and Neck Squamous Cell Carcinoma (HNSCC). The abstract was also selected as one of the featured posters to be reviewed by an expert panel in
 the Head and Neck Cancer discussion session. Data on 34 patients was presented. The data from the abstract is as follows:

 Estimated 12-month overall survival rate was 87.1%. Published results are 36-50% with approved ICIs used alone.

 Median progression-free survival was 10.4 months (95% CI 4.2, 15.3). Published results are median PFS of 2-3 months for approved ICIs when used as monotherapy in patients with similar PD-L1 levels.

 A disease control rate (disease stabilization or tumor shrinkage) of 70.6% (24/34)

 Confirmed and unconfirmed objective response rate is 41.2% (14/34 patients), which is identical to the preliminary response rate data PDS Biotech previously reported at ASCO 2022 (7/17 patients). To date these responses have been
 confirmed in nine of the 34 patients (26.5%), including one complete response.

 15/34 patients (44.1%) had stable disease.

 9/34 patients (26.5%) had progressive disease.

 4/48 (8.3%) of patients had a Grade 3 treatment-related adverse event (TRAE). No Grade 4 or higher TRAEs were observed.

 In October 2023, at a key opinion roundtable updated interim data was presented based on an August 2, 2023 cut-off from our VERSATILE-002 Phase 2 clinical trial evaluating the combination of PDS0101 in combination
 with Merck's anti-PD-1 therapy, Keytruda (pembrolizumab) which is an FDA-approved standard of care for first-line treatment of recurrent/ metastatic head and neck cancer. Data on 52 patients was presented. The data from the roundtable based on
 investigator assessment was as follows:

 Highlights from the ICI na ve cohort include:

 24-month overall survival (OS) rate is 74%; published 24-month survival rate of less than 30% for approved ICI.

 12-month OS rate is 80%; published results of 30-50% with approved ICIs.

 Tumor shrinkage seen in 60% (31/52) of patients.

 Confirmed overall response rate ORR is 27% (14/52) to date.

 Median progression-free survival (PFS) is 8.1 months to date; published results of 2-3 months PFS with approved ICIs.

 13% (8/62) of patients experienced Grade 3 treatment-related adverse events (TRAE) and 0% (0/62) experienced Grade 4 or 5 TRAE; published results report 13-17% Grade 3-5 TRAE with approved ICI monotherapy.

 60% (33/55) of patients have CPS score of 1-19 (who generally have a weaker response to Keytruda), and 40% (22/55) have CPS score >20 (who generally have a higher response to Keytruda).

 Highlights from the ICI refractory cohort include:

 The 12-month OS rate is 56%. The published median 12-month OS rate is 17% with no salvage chemotherapy following tumor progression on ICI (ICI Resistant).

 0% (0/21) confirmed ORR suggests that PDS0101's impact on survival does not appear to be dependent on tumor shrinkage.

 4% (1/25) of patients experienced Grade 3 TRAE and 0% (0/21) patients experienced Grade 4 and 5 TRAE.

 MD Anderson Cancer Center (IMMUNOCERV): PDS0101+ Chemoradiotherapy

 In October 2020, a PDS0101 Phase 2 IIT was initiated with The University of Texas MD Anderson Cancer Center and is actively recruiting patients. This clinical trial is investigating the safety
 and anti-tumor efficacy of PDS0101 in combination with standard-of-care chemo-radiotherapy, or CRT, and their correlation with critical immunological biomarkers in patients with locally advanced cervical cancer. We believe that Versamune has
 strong T cell induction with the potential to enhance efficacy of the current standard of care CRT treatment in this indication with the FDA at this meeting.

 In November 2022, data from this trial was included in a poster presentation at the 2022 SITC Annual Meeting which included the following:

 9 of the 17 patients had completed a Day 170 post-treatment Positron Emission Tomography, Computed Tomography (PET CT) scan to assess the status of the cancer. This included 78% (7/9) of treated patients
 with advanced cervical cancer (FIGO stage III or IV).

 100% (9/9) of patients treated with the combination of PDS0101 and CRT had an objective response.

 89% (8/9) of patients treated with the combination of PDS0101 and CRT demonstrated a complete response (CR) on Day 170 by PET CT. One patient who received 3 of the 5 scheduled doses of PDS0101 showed signs
 of residual disease. One patient who had a CR died from an event unrelated to either their underlying disease or treatment.

 1-year disease-free survival and 1-year overall survival of 89% (8/9) in patients treated with the combination of PDS0101 and CRT.

 As previously reported, data confirm PDS0101 treatment activates HPV16-specific CD8 T cells. This increase was not seen in patients who did not receive PDS0101. The increase in HPV16-specific T cells
 generated by the treatment is positively correlated with tumor cell death, suggesting cytotoxic CD8 T cells are important mediators of antigen-specific immunity.

 The data affirms that PDS0101 activates Type 1 interferon pathway in humans, mimicking the mechanism previously demonstrated in preclinical studies in animal models.

 Toxicity of PDS0101 remains limited to low-grade local injection site reactions.

 In October 2023, data demonstrating PDS0101 in combination with standard-of-care (SOC) chemoradiotherapy was associated with a rapid decline in human papillomavirus circulating cell-free DNA
 (ctHPV-DNA), a potential predictive biomarker of treatment response. The data from the IMMUNOCERV Phase 2 clinical trial was featured in an oral presentation at the American Society for Radiation Oncology Annual Meeting which included the
 following:

 Earlier and greater proportion of ctDNA clearance with PDS0101 plus chemoradiation (CRT) vs. SOC CRT alone (81.3% clearance after 3 weeks vs. 30.3% with SOC (p=0.0018), and 91.7% of clearance at 5 weeks vs. 53.1% with SOC (p=0.0179).

 Baseline ctDNA levels correlated with the International Federation of Gynecology and Obstetrics (FIGO) stage and lymph node involvement; 100% of patients treated with PDS0101 had cancer that had spread to the lymph nodes.

 Mayo Clinic: PDS0101 Monotherapy and in combination with Keytruda

 In February 2022, we initiated an Investigator-Initiated Trial (ITT), MC200710, for PDS0101 alone or in combination with the immune checkpoint inhibitor, Keytruda, in
 patients with HPV-positive oropharyngeal cancer (HPV(+)OPSCC) at high risk of recurrence. The trial is being led by Drs. David Routman, Katharine Price, Kathryn Van Abel, and Ashish Chintakuntlawar at Mayo Clinic, a nationally and internationally
 recognized center of excellence for the treatment of head and neck cancers. We believe that this trial not only broadens our addressable patient population of those affected by the increasing incidence of HPV(+)OPSCC, but also allows us to better
 understand the activity of PDS0101 alone or in combination with Keytruda in earlier stages of disease. This trial is currently open for enrollment.

 In this trial, treatment will be administered before patients proceed to transoral robotic surgery (TORS) with curative intent. Treatment in this setting is referred to as
 neoadjuvant treatment. PDS0101 has been shown to induce killer T cells that target and kill HPV-positive cancers, either alone or in combination with ICIs in preclinical studies, and in combination in clinical studies of patients with advanced
 recurrent/metastatic HPV-positive cancers. This trial will explore whether PDS0101 with or without checkpoint inhibition may increase HPV-specific anti-tumor responses, potentially resulting in tumor shrinkage, pathologic regression, and
 decreases in circulating tumor DNA (ctDNA).

 PDS0102

 PDS0102 is an investigational immunotherapy utilizing tumor-associated and immunologically active T cell receptor gamma alternate reading framed protein (TARP) from the NCI.
 PDS0102 is designed to treat TARP-associated cancers including, acute myeloid leukemia (AML), prostate and breast cancer. In our preclinical work, in the administration of PDS0102, the Versamune +TARP antigen combination led to the induction of
 large numbers of tumor targeted killer T cells. In addition, the TARP tumor antigen alone has already been studied at the NCI in men with prostate cancer and has been shown to be safe, and immunogenic with slowing tumor growth rates
 (NCT00972309).

 PDS0103

 In April 2020, the above mentioned CRADA between PDS Biotech and the NCI was expanded beyond PDS0101 to include clinical and preclinical development of PDS0103. PDS0103 is an investigational
 immune therapy owned by PDS Biotech and designed to treat cancers associated with the mucin-1, or MUC1, oncogenic protein. These include cancers such as ovarian, breast, colorectal and lung cancers. PDS0103 combines Versamune with novel highly
 immunogenic agonist epitopes of MUC1 developed by the NCI and licensed by PDS Biotech. PDS0103 is currently in the tech transfer, clinical scale up and manufacturing stage.

 MUC1 is highly expressed in several types of cancer and has been shown to be associated with drug resistance and poor disease prognosis in breast, colorectal, lung and ovarian cancers, for which
 PDS0103 is being developed. Expression of MUC1 is often associated with poor disease prognosis, due in part to drug resistance. In preclinical studies, and similarly to PDS0101, PDS0103 demonstrated the ability to generate powerful MUC1-specific
 CD8 killer T cells.

 In the first quarter of 2022, we held a pre-IND meeting with the FDA on PDS0103 and we are prepared to submit our IND package by the end of 2024. However, the actual submission date may
 potentially be impacted by the allocation of resources to initiate a pivotal trial for PDS0101 in combination with PDS01ADC.

 IL-12 Oncology Immunocytokine Pipeline

 PDS01ADC (formerly known as PDS0301/M9241/NHS-IL-12) is a novel investigational IL-12 fused antibody drug conjugate (IgG1), tumor-targeting interleukin 12 (IL-12)
 immune-cytokine that enhances the proliferation, potency and longevity of T cells in the tumor microenvironment. Together with Versamune based immunotherapies PDS01ADC works synergistically to overcome tumor immune suppression and to promote a
 targeted T cell attack against cancers. As with Versamune, PDS01ADC is given by a simple subcutaneous injection. Clinical data suggests the addition of PDS01ADC to Versamune based immunotherapies may demonstrate significant disease control in
 advanced cancer patients by shrinking tumors and/or prolonging life.

 With the exclusive global license agreement with Merck KGaA, Darmstadt, Germany for PDS01ADC, we believe we have simplified our registrational pathway for the NCI-led triple combination by
 owning both PDS0101 and PDS01ADC and combining these agents with an FDA approved ICI. PDS01ADC has been designed to overcome the limitations of cytokine therapy as explained above, and based on extensive preclinical studies performed at the NCI
 evaluating PDS01ADC as a monotherapy and also in combinations with established standard of care treatments for cancer, we believe that PDS01ADC has significant potential as a cytokine therapy independent of Versamune. Based on the informative
 preclinical studies, a number of ITT Phase 2 trials are currently in progress at the NCI, some of which are outlined below:

 Phase II Study Evaluating ICI Na ve and Resistant Patients with HPV-positive malignancies treated with PDS01ADC, PDS0101 and bintrafusp alfa.

 A Phase II Study Evaluating T-Cell Clonality After Stereotactic Body Radiation Therapy Alone and in Combination with the Immunocytokine PDS01ADC in Localized High and Intermediate Risk Prostate Cancer Treated with Androgen
 Deprivation Therapy

 A Phase I/II Study of PDS01ADC in Combination with Docetaxel in Adults with Metastatic Castration Sensitive and Castration Resistant Prostate Cancer

 Phase I/II of PDS01ADC going forward as a Monotherapy in Advanced Kaposi Sarcoma

 Phase I/II of PDS01ADC in Combination of with a Histone Deacetylase (HDAC) Inhibitor in ICI resistant MUC1-positive colon and bladder cancers among others

 In October 2023, interim safety and immune response data was presented for the first-in-human Phase1/2 clinical trial evaluating PDS01ADC in combination with current SOC chemotherapy,
 docetaxel, to treat metastatic castration sensitive and castration resistant prostate cancer. The data was featured in an oral presentation at the 11 th Annual
 Meeting of the International Cytokine & Interferon Society. The data presented included the following:

 Decrease in PSA levels was seen in all patients at all three tested doses of PDS01ADC and 61% of patients had at least a 60% decrease in PSA levels.

 All doses of the combination were well-tolerated with one patient experiencing Grade 4 neutropenia.

 Administration of the combination was associated with decreases in T reg cells and increases in activated natural killer (NK) cells, memory CD8 T cells, proliferating CD4 and CD8 T cells and cytokines INF- and Interleukin 10
 (IL-10).

 The changes in immune responses with the combination were independent of the PDS01ADC dose.

 We are working closely with the NCI to determine the best pathway forward for the prioritized PDS01ADC studies, as well as evaluating the use of PDS01ADC in combination with other Versamune
 based clinical candidates.

 Infectimune Development Strategy

 We believe that the key differentiating attributes of the Infectimune platform technology are strong induction of CD8 and CD4 T cells as well as antibodies which can be leveraged to improve
 treatment and preventive options in several infectious disease indications. In January 2022, we presented preclinical data on our universal flu program sponsored by the National Institute of Allergy and Infectious Disease (NIAID) demonstrating
 the potential of the Infectimune technology with computationally designed influenza proteins developed by the laboratory of Dr. Ted Ross at the University of Georgia to generate broadly protective anti-influenza immune responses across multiple
 strains of influenza. This data has provided a unique opportunity to highlight Infectimune 's potentially transformative utility in the development of more broadly effective and longer lasting protective vaccines. Current preventive and
 prophylactic vaccine approaches and technologies predominantly focus on creating strong induction of antibody responses. However, the induction of T cell responses, in addition to antibody responses, provides more durable and broad protection
 against infectious diseases.

 Based on the preclinical data with the universal seasonal flu vaccine and the current focus of the NIAID in developing more effective flu vaccines, we have decided to focus our near-term
 infectious disease activities to align with the interests of the NIAID Collaborative Influenza Vaccine Innovation Centers (CIVICs) program. This will involve development of a universal seasonal flu vaccine and the potential development of a
 universal pandemic influenza vaccine based on similar computationally designed antigens as have shown promise with Infectimune.

 In July 2022, universal flu vaccine preclinical data for PDS0202 at the 41 st American Society of Virology meeting:
 Abstract number 3733830, Infectimune enhances antibodies elicited by COBRA hemagglutinin influenza vaccine. We are evaluating the next steps in the clinical development and funding for PDS0202.

 The preclinical results for Infectimune based vaccines were published in two separate articles in the peer reviewed journal Viruses in
 February 2023: 1. preclinical studies demonstrating complete protection against sickness after lethal challenge with live SARS-CoV-2 or influenza viruses (Gandhapudi SK et al. Viruses 2023, 15, 432) and 2. Dramatically enhanced CD4 T cell responses to recombinant influenza proteins compared to leading commercial vaccine adjuvants (Henson TR et al. Viruses
 2023, 15, 538).

 In September 2023, preclinical data on our investigational universal flu vaccine, PDS0202, was presented at the 9 th
 European Scientific Working Group on Influenza (ESWI) conference. This data demonstrated active neutralization across multiple influenza viruses in animals and provided protection against infection and weight loss after challenging with high
 doses of H1N1 viruses when they were not previously exposed to flu.

 Our current clinical pipeline of Versamune, PDS01ADC and Infectimune based therapies is as follows:

 We have never been profitable and have incurred net losses in each year since inception. Our net losses were $42.9 million, and $40.9 million for the years ended December 31,
 2023 and 2022, respectively. As of December 31, 2023, we had an accumulated deficit of $144.5 million. Substantially all of our net losses have resulted from costs incurred in connection with our research and development programs and from general
 and administrative costs associated with these operations.

 As of December 31, 2023, we had $56.6 million in cash and cash equivalents.

 Our future funding requirements will depend on many factors, including the following:

 the timing and costs of our planned clinical trials;

 the timing and costs of our planned preclinical studies of our Versamune platform;

 the outcome, timing and costs of seeking regulatory approvals;

 the terms and timing of any future collaborations, licensing, consulting or other arrangements that we may enter into;

 the amount and timing of any payments we may be required to make in connection with the licensing, filing, prosecution, maintenance, defense and enforcement of any patents or patent applications or other
 intellectual property rights; and

 the extent to which we license or acquire other products and technologies.

 Selected Financial Operations Overview

 Revenue

 We have not generated any revenues from commercial product sales and do not expect to generate any such revenue in the near future. We may, but there are no assurances that
 we will, generate revenue in the future from a combination of research and development payments, product royalties, license fees and other upfront payments or milestone payments.

 Research and Development Expenses

 Research and development expenses include employee-related expenses, costs to acquire license rights to use certain technology in our research and development projects, costs of
 acquiring, developing and manufacturing clinical trial materials, as well as fees paid to consultants and various entities that perform certain research and testing on our behalf. Costs for certain development activities, such as clinical trials,
 are recognized based on an evaluation of the progress to completion of specific tasks using data such as patient enrollment, clinical site activations or information provided by vendors on their actual costs incurred. Payments for these
 activities are based on the terms of the individual arrangements, which may differ from the pattern of costs incurred, and are reflected in the consolidated financial statements as prepaid or accrued expenses. Costs incurred in connection with
 research and development activities are expensed as incurred.

 We expect that our research and development expenses will increase significantly over the next several years as we advance our Versamune and PDS01ADC product candidates
 into and through clinical trials, pursue regulatory approval of our Versamune product candidates and prepare for a possible commercial launch, all of which will also require a significant investment in contract research services,
 manufacturing process validation and inventory related costs.

 The process of conducting human clinical trials necessary to obtain regulatory approval is costly and time consuming. We may never succeed in achieving marketing approval for
 our clinical product candidates. The probability of successful commercialization of our product candidates may be affected by numerous factors, including clinical data obtained in future trials, competition, manufacturing capability and
 commercial viability. As a result, we are unable to determine the duration and completion costs of our research and development projects or when and to what extent we will generate revenue from the commercialization and sale of any of our
 product candidates.

 The following table summarizes our research and development expenses incurred for the periods indicated (in thousands):

 2023

 2022

 PDS Biotech projects

 $

 17,610

 $

 12,468

 Clinical consulting

 Cost of license rights

 -

 10,000

 Salaries and other costs

 9,977

 6,586

 Total

 $

 27,763

 $

 29,431

 General and Administrative Expenses

 General and administrative expenses consist primarily of salaries and related benefits, including stock-based compensation, related to our executive, finance, legal, business
 development and support functions. Other general and administrative expenses include travel expenses, professional fees for auditing, tax and legal services and facility-related costs.

 Interest Income (Expense), net

 Interest income (expense), net consists of interest income earned from bank deposits and interest expense consists of interest paid on outstanding debt plus amortization of
 the debt discount and interest from capital leases. These amounts will fluctuate based on changes to the interest rate environment.

 Critical Accounting Policies

 Our accounting policies are more fully described in Note 2 to the consolidated financial statements included in this Annual Report on Form 10-K. As described in Note 2, the
 preparation of these financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements,
 as well as the reported revenue generated and expenses incurred during the reporting periods. Our estimates are based on our historical experience and on various market specific and other relevant assumptions that we believe are reasonable
 under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Estimates are assessed each period and updated to reflect
 current information. Actual results may differ from these estimates. We believe that the following discussion addresses our most critical accounting policies, which are those that are most important to the portrayal of our financial condition
 and results of operations and require management's most difficult, subjective and complex judgments.

 Income Taxes

 We file U.S. federal income tax returns and New Jersey state tax returns. Our deferred tax assets are primarily comprised of federal and state tax net operating losses and tax
 credit carryforwards and are recorded using enacted tax rates expected to be in effect in the years in which these temporary differences are expected to be utilized. At December 31, 2023, we had federal net operating loss, or NOLs,
 carryforwards of approximately $136.2 million, $30.0 million of which expire at various dates between 2028 and 2037, losses generated in 2018 or later of $106.2 million will carry forward indefinitely. At December 31, 2023, we had federal
 research and development credit carryforwards of approximately $4.7 million. We may be subject to the net operating loss utilization provisions of Section 382 of the Internal Revenue Code. The effect of an ownership change would be the
 imposition of an annual limitation on the use of NOL carryforwards attributable to periods before the change. The amount of the annual limitation depends upon our value immediately before the ownership change, changes to our capital during a
 specified period prior to the change, and the federal published interest rate. Although we have not completed an analysis under Section 382 of the Code, it is likely that the utilization of the NOLs will be limited.

 Accrued Clinical Expenses

 When preparing our financial statements, we are required to estimate our accrued clinical expenses. This process involves reviewing open contracts and communicating with our
 personnel to identify services that have been performed on our behalf and estimating the level of service performed and the associated cost incurred for the service when we have not yet been invoiced or otherwise notified of actual cost. If we
 underestimate or overestimate the cost associated with a trial or service at a given point in time, adjustments to research and development expenses may be necessary in future periods. Historically, our estimated accrued clinical expenses have
 approximated actual expense incurred.

 Stock-based Compensation

 We estimate the fair value of our stock-based compensation awards to employees, directors and non-employees using the Black-Scholes option-pricing model, which requires the
 following assumptions: (1) the expected volatility assumption was changed on January 1, 2023 from using volatilities of a peer group of similar companies in the biotechnology industry whose share prices were publicly available to using the
 volatility of the Company's historical share price performance over the contractual term of the options, (2) the expected term of the award is based on the simplified method, which is the midpoint between the requisite service period and the
 contractual term of the option, as we have a limited history of being a public company to develop reasonable expectations about future exercise patterns and employment duration for our options, (3) the risk-free interest rate based on U.S.
 Treasury notes with a term approximating the expected life of the option and (4) expected dividend yield of 0, since we have never paid cash dividends and have no present intention to pay cash dividends.

 Results of Operations

 Comparison of the Years Ended December 31, 2023 and 2022

 Increase (Decrease)

 2023

 2022

 $

 %

 (in thousands)

 Operating expenses:

 Research and development expenses

 $

 27,763

 $

 29,431

 $

 (1,668

)

 (6

)%

 General and administrative expenses

 15,282

 12,241

 3,041

 %

 Total operating expenses

 43,045

 41,672

 1,373

 %

 Loss from operations

 (43,045

)

 (41,672

)

 (1,373

)

 %

 Interest income (expense), net

 (1,303

)

 (381

)

 (922

)

 %

 Benefit from income taxes

 1,406

 1,199

)

 %

 Net loss and comprehensive loss

 $

 (42,942

)

 $

 (40,855

)

 $

 (2,087

)

 %

 Research and Development Expenses

 For the year ended December 31, 2023, research and development expenses decreased to approximately $27.8 million compared to approximately $29.4 million for the year ended
 December 31, 2022. The decrease of $1.7 million was primarily attributable to a decrease in quality and manufacturing costs of $10.2 million, mainly driven by the $10.0 million purchase in 2022 of the rights to PDS01ADC from Merck KGaA,
 Darmstadt Germany, offset by an increase in personnel costs of $2.1 million, clinical costs of $6.1 million, facilities costs of $0.2 million, and professional fees of $0.1 million.

 General and Administrative Expenses

 For the year ended December 31, 2023, general and administrative expenses increased to approximately $15.3 million compared to approximately $12.2 million for the year ended
 December 31, 2022. The $3.1 million increase was primarily attributable to an increase in personnel costs of $1.5 million and an increase in professional fees of $1.6 million.

 Interest Income (Expense), net

 For the year ended December 31, 2023, interest expense was $4.2 million compared to $1.3 million for the year ended December 31, 2022. The $2.9 million increase in interest
 expense was due to the Horizon Financing Loan, which was entered into in August 2022.

 For the year ended December 31, 2023, interest income was $2.9 million compared to $0.9 million for the year ended December 31, 2022. The increase of $2.0 million in interest
 income is due to the higher cash balance resulting from the Horizon Financing Loan.

 Benefit from Income Taxes

 Income tax benefit was $1.4 million for the year ended December 31, 2023 as compared to $1.2 million for the prior year ended December 31, 2022. The increase of $0.2 million was
 due to increased proceeds from the net sale of tax benefits to an unrelated, profitable New Jersey corporation pursuant to the Company's participation in the New Jersey Technology Business Tax Certificate Transfer Net Operating Loss (NOL)
 program.

 Liquidity and Capital Resources

 In April 2022, we received approximately $1.2 million from the net sale of tax benefits to an unrelated, profitable New Jersey corporation pursuant our participation in the
 New Jersey Technology Business Tax Certificate Transfer NOL program for tax year 2020.

 In August 2022, we filed a shelf registration statement, or the 2022 Shelf Registration Statement, with the SEC for the issuance of common stock, preferred stock, warrants,
 rights, debt securities, and units, which the Company refers to collectively as the Shelf Securities, up to an aggregate amount of $150 million, $50 million of which covers the offer, issuance and sale by the Company of its common stock under
 the Sales Agreement (as discussed below). The 2022 Shelf Registration Statement was declared effective on September 2, 2022.

 In August 2022, we entered into an At Market Issuance Sales Agreement, or the Sales Agreement, with B. Riley Securities, Inc. and BTIG, LLC, each an Agent and collectively
 the Agents, with respect to an at-the-market offering program under which we may offer and sell, from time to time at our sole discretion, shares of our common stock, having an aggregate offering price of up to $50.0 million, or the Placement
 Shares, through or to the Agents, as sales agents or principals. Upon delivery of a placement notice and subject to the terms and conditions of the Sales Agreement, the Agents may sell the Placement Shares by any method permitted by law deemed
 to be an "at the market" offering as defined in Rule 415 of the Securities Act of 1933, as amended, including, without limitation, sales made through The Nasdaq Capital Market or on any other existing trading market for our common stock. The
 Agents will use commercially reasonable efforts to sell the Placement Shares from time to time, based upon our instructions (including any price, time or size limits or other customary parameters or conditions we may impose). We will pay the
 Agents a commission equal to three percent (3%) of the gross sales proceeds of any Placement Shares sold through the Agents under the Sales Agreement, and also has provided the Agents with customary indemnification and contribution rights. We
 are not obligated to make any sales of our common stock under the Sales Agreement. The offering of Placement Shares pursuant to the Sales Agreement will terminate upon the earlier of (i) the sale of all Placement Shares subject to the Sales
 Agreement or (ii) termination of the Sales Agreement in accordance with its terms. During the year ended December 31, 2023, we sold 2,642,269 shares of our common stock for a net value of $16.1 million pursuant to the Sales Agreement. For the
 year ended December 31, 2022, we sold 1,238,491 shares of our common stock for a net value of $9.9 million pursuant to the Sales Agreement. As of the date of this Annual Report, in the first quarter 2024, we sold 3,428,681 shares of our common
 stock for a net value of $19.5 million pursuant to the Sales Agreement.

 In August 2022, we entered into a venture loan and security agreement, or the Loan and Security Agreement, with Horizon Technology Finance Corporation, as lender and
 collateral agent for itself and the other lenders. The Loan and Security Agreement provides for the following 6 separate and independent term loans: (a) a term loan in the amount of $7,500,000, or Loan A, (b) a term loan in the amount of
 $10,000,000, or Loan B, (c) a term loan in the amount of $3,750,000, or Loan C, (d) a term loan in the amount of $3,750,000, or Loan D, (e) a term loan in the amount of $5,000,000, or Loan E, and (f) a term loan in the amount of $5,000,000, or
 Loan F, (with each of Loan A, Loan B, Loan C, Loan D, Loan E, and Loan F, individually a Loan and, collectively, the Loans). Loan A, Loan B, Loan C, and Loan D were delivered to us on August 24, 2022. In total, we received $24.6 million in net
 proceeds. Loan E and Loan F were uncommitted Loans that could have been advanced by the lenders upon the parties agreement prior to July 31, 2023 upon the satisfaction of certain conditions. At this time the option to advance Loan E and Loan F
 has expired and Loan E and Loan F are no longer available to the Company under the Loan and Security Agreement. We may only use the proceeds of the Loans for working capital or general corporate purposes. Each Loan matures on the 48-month
 anniversary following the applicable funding date unless accelerated pursuant to agreed upon events of default. Payments on the principal balance begin on October 1, 2024 and are paid monthly in the succeeding 24 months. The principal balance
 of each Loan bears a floating interest. The interest rate is calculated initially and, thereafter, each calendar month as the sum of (a) the per annum rate of interest from time to time published in The Wall Street Journal as contemplated by
 the Loan and Security Agreement, or any successor publication thereto, as the "prime rate" then in effect, plus (b) 5.75%; provided that, in the event such rate of interest is less than 4.00%, such rate shall be deemed to be 4.00% for purposes
 of calculating the interest rate.

 Interest is payable on a monthly basis based on each Loan principal amount outstanding the preceding month. We, at our option upon at least ten (10) business days' written
 notice to the lenders, may prepay all (and not less than all) of the outstanding Loan by simultaneously paying to each lender an amount equal to (i) any accrued and unpaid interest on the outstanding principal balance of the Loans; plus (ii) an
 amount equal to (A) if such Loan is prepaid on or before the Loan Amortization Date (as defined in the Loan and Security Agreement) applicable to such Loan, 3% of the then outstanding principal balance of such Loan, (B) if such Loan is prepaid
 after the Loan Amortization Date applicable to such Loan, but on or before the date that is 12 months after such Loan Amortization Date, 2% of the then outstanding principal balance of such Loan, or (C) if such Loan is prepaid more than 12
 months after the Loan Amortization Date but prior to the stated maturity date applicable to such Loan, 1% of the then outstanding principal balance of such Loan; plus (iii) the outstanding principal
 balance of such Loan; plus (iv) all other sums, if any, that shall have become due and payable thereunder. No prepayment premium will be applied to any outstanding balance of any Loan paid on the
 stated maturity date.

 In connection with the Loan and Security Agreement, we issued Horizon Technology Finance Corporation and Powerscourt Investments XXV, LP warrants to purchase an aggregate
 total of 381,625 shares of the Company's common stock at an initial exercise price of $3.6685 per share. Each warrant is classified as equity and is exercisable at any time for a period beginning on the date of grant and ending on the earlier
 of (A) 10 years from the date of grant, and (B) the closing of (A) (i) the sale, lease, exchange, conveyance or other disposition of all or substantially all of the our property or business, or (ii) its merger into or consolidation with any
 other corporation (other than a wholly-owned subsidiary of the Company), or any transaction (including a merger or other reorganization) or series of related transactions, in which more than 50% of the voting power of the Company is disposed
 of, in each case, for cash or for marketable securities meeting certain requirements as described in the applicable warrants. The key assumptions used in Black-Scholes option pricing model were (i) expected term of 10 years, (ii) a risk-free
 rate of 3.11%, (iii) expected volatility of 93.8%, (iv) and no estimated dividend yield.

 In April 2023, we received approximately $1.4 million from the net sale of tax benefits to an unrelated, profitable New Jersey corporation pursuant our participation in the
 New Jersey Technology Business Tax Certificate Transfer NOL program for tax year 2021.

 As of December 31, 2023, we had $56.6 million of cash and cash equivalents. Our primary uses of cash are to fund operating expenses, primarily research and development
 expenditures. Cash used to fund operating expenses is impacted by the timing of when we pay these expenses, as reflected in the change in our outstanding accounts payable and accrued expenses.

 We evaluated whether there are any conditions and events, considered in the aggregate, that raise substantial doubt about our ability to continue as a going concern within
 one year beyond the filing of this Annual Report on Form 10-K. Our budgeted cash requirements in 2024 and beyond include expenses related to continuing development and clinical studies as well as payments on our debt.

 We plan to continue to fund our operations and capital funding needs through existing cash and additional equity and/or debt financing. However, we cannot be certain that
 additional financing will be available when needed or that, if available, financing will be obtained on terms favorable to us or our existing stockholders. We may also enter into government funding programs and consider selectively partnering for
 clinical development and commercialization. The sale of additional equity would result in additional dilution to our stockholders. Incurring debt financing would result in debt service obligations, and the instruments governing such debt could
 provide for operating and financing covenants that would restrict our operations. If we are unable to raise additional capital in sufficient amounts or on acceptable terms, we may be required to delay, limit, reduce, or terminate our product
 development or future commercialization efforts or grant rights to develop and market immunotherapies that we would otherwise prefer to develop and market ourselves. In addition, the Loan and Security Agreement also allows for the lenders to call
 the outstanding balance of the term loans if the minimum cash balances outlined in the Loans and Security Agreement are not maintained. Any of these actions could harm our business, results of operations and prospects.

 Cash flows

 The following table shows a summary of our cash flows for each of the years indicated (in thousands):

 2023

 2022

 Net cash used in operating activities

 $

 (33,636

)

 $

 (25,710

)

 Net cash provided by financing activities

 16,376

 34,287

 Net (decrease) increase in cash and cash equivalents

 $

 (17,260

)

 $

 8,577

 Net Cash Used in Operating Activities

 Net cash used in operating activities was $33.6 million and $25.7 million for the years ended December 31, 2023 and 2022, respectively. The increase in cash
 used in operating activities of $7.9 million is primarily due to the increase in net loss of $2.1 million, reduced by the increase in non-cash stock-based compensation expense of $2.4 million, the value of shares issued from our consulting
 agreement of $1.0 million and the value of the shares issued for the Merck licensing agreement of $5.0 million, offset by changes in the timing of working capital requirements, including changes in prepaid expenses and other assets,
 accrued expenses and accounts payable.

 Net Cash Used in Investing Activities

 Net cash used in investing activities for the year ended December 31, 2023 was due to the purchase of equipment for our Princeton lab.

 Net Cash Provided by Financing Activities

 Net cash provided by financing activities for the year ended December 31, 2023 was primarily due to the receipt of net proceeds from the issuance of common stock of $16.1
 million and the exercise of stock options of $0.3 million.

 Net cash provided by financing activities for the year ended December 31, 2022 was primarily due to the receipt of net proceeds from the issuance of the note payable of $24.6
 million and the issuance of common stock of $9.9 million.

 Operating Capital Requirements

 To date, we have not generated any product revenue. We are unable to predict when, or if, we will generate any product revenue and we do not expect to generate significant
 product revenue unless and until we obtain regulatory approval and commercialize one of our current or future product candidates. We anticipate that we will continue to generate losses for the foreseeable future, and we expect the losses to
 increase as we continue the development of, and seek regulatory approvals for, our product candidates, and begin to commercialize any approved products. We are subject to all of the risks incident to the development of new products, and may
 encounter unforeseen expenses, difficulties, complications, delays and other unknown factors that may harm our business. We expect to incur additional costs associated with operating as a public company and anticipate that we will need
 substantial additional funding in connection with our continuing operations.

 We evaluated whether there are any conditions and events, considered in the aggregate, that raise substantial doubt about our ability to continue as a going
 concern within one year after the filing of this Annual Report. Our budgeted cash requirements in 2024 and beyond include expenses related to continuing development and clinical studies as well as payments on our debt. Until we can generate significant cash from our operations, we expect to continue to fund our operations with available financial resources. These financial resources may not be adequate to sustain our operations. While we
 intend to finance our cash needs principally through collaborations, strategic alliances, or license agreements with third parties and/or debt or equity financings, there is no assurance that new financing will be available to us on
 commercially acceptable terms or in the amounts required, if at all. In addition, the Loan and Security Agreement also allows for the lenders to call the outstanding balance of the term loans if the minimum cash balances outlined in the Loans
 and Security Agreement are not maintained. We have concluded that substantial doubt exists about our ability to continue as a going concern for a period of at least 12 months from the date of the issuance of these audited consolidated financial
 statements.

 We have based our projections of operating capital requirements on assumptions that may prove to be incorrect and we may use all of our available capital resources sooner
 than we expect. Because of the numerous risks and uncertainties associated with research, development and commercialization of pharmaceutical products, we are unable to estimate the exact amount of our operating capital requirements. Our future
 funding requirements will depend on many factors, including, but not limited to:

 the initiation, progress, timing, costs and results of our planned clinical trials;

 the effects of health epidemics, pandemics, or outbreaks of infectious diseases, on our business operations, financial condition, results of operations and cash flows;

 the outcome, timing and cost of meeting regulatory requirements established by the U.S. Food and Drug Administration, or FDA, the European Medicines Agency, or EMA, and other comparable foreign regulatory authorities;

 the cost of filing, prosecuting, defending and enforcing our patent claims and other intellectual property rights;

 the cost of defending potential intellectual property disputes, including patent infringement actions brought by third parties against us now or in the future;

 the effect of competing technological and market developments;

 the cost of establishing sales, marketing and distribution capabilities in regions where we choose to commercialize our vaccines on our own; and

 the initiation, progress, timing and results of our commercialization of our vaccine candidates, if approved, for commercial sale.

 Please see the section titled "Risk Factors" elsewhere in this Annual Report on Form 10-K for additional risks associated with our operations.

 Purchase Commitments

 We have no material non-cancelable purchase commitments with service providers as we have generally contracted on a cancelable, purchase order basis.

 Off-Balance Sheet Arrangements

 We did not have during the periods presented, and we do not currently have any off-balance sheet arrangements, as defined under U.S. GAAP or under the rules and regulations
 of the SEC.

 Smaller Reporting Company

 We are a "smaller reporting company," as defined in Rule 12b-2 under the Securities Exchange Act of 1934, as amended. We will cease to be a smaller reporting company if we
 have a non-affiliate public float in excess of $250 million and annual revenues in excess of $100 million, or a non-affiliate public float in excess of $700 million, determined on an annual basis. As a smaller reporting company, we are
 permitted and intend to rely on exemptions from certain disclosure requirements that are applicable to other public companies that are not smaller reporting companies. These exemptions include:

 being permitted to provide only two years of audited consolidated financial statements in this Annual Report on Form 10-K, with correspondingly reduced "Management's Discussion and Analysis of Financial
 Condition and Results of Operations" disclosure;

 reduced disclosure obligations regarding exe cutive compensation;

 not being required to furnish a contractual obligations table in "Management's Discussion and Analysis of Financial Condition and Results of Operations"; and

 not being required to furnish a stock performance graph i n our annual report.

 We expect to continue to take advantage of some or all of the available exemptions.

 ITEM 7A.

 Quantitative and qualitative disclosures about market risk

 Interest Rate Risk

 We are exposed to market risk related changes in interest rates. As of December 31, 2023, our cash equivalents consisted of bank
 deposits and money market accounts. Additionally, the principal balance of our Loan and Security agreement with Horizon Technology Finance Corporation bears a floating interest pegged to the prime rate. Our primary exposure to market risk is
 interest income sensitivity, which is affected by changes in the general level of U.S. interest rates. Historically, the net impact of fluctuations in interest rates have not been material to us.

 Inflation Risk

 Inflation generally affects us by increasing our cost of labor and pricing of contracts. As a majority of our outside contracts for services and goods extend over multiple years, we do not
 believe that inflation has had a material effect on our business, financial condition, or results of operations during the year ended December 31, 2023.

 ITEM 8.

 Financial Statements and Supplementary Data

 The financial statements required to be filed pursuant to this Item 8 are appended to this report. An index of those financial statements is found in Item 15.

 ITEM 9.

 Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

 None.

 ITEM 9A.

 Controls and Procedures

 Limitations of Internal Control System

 Because of the inherent limitations in a cost-effective control system, no evaluation of internal control over financial reporting can provide absolute assurance that
 misstatements due to error or fraud will not occur or that all control issues and instances of fraud, if any, within our company have been detected. Therefore, even those systems determined to be effective can provide only reasonable assurance
 with respect to financial statement preparation and presentation. Management does not expect that our disclosure controls and procedures or our internal control over financial reporting will prevent or detect all errors and all fraud.

 Evaluation of Disclosure Controls and Procedures

 Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of the design and operation of our
 disclosure controls and procedures, (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934 (the "Exchange Act")), as of December 31, 2023. Based on that evaluation, management has concluded that, as of
 such date, our disclosure controls and procedures were effective at the reasonable assurance level.

 We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed by us in reports that we file or submit under the
 Exchange Act is recorded, processed, summarized, and reported within the time periods specified in SEC rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief
 Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

 In designing and evaluating our disclosure controls and procedures, management recognized that disclosure controls and procedures, no matter how well conceived and operated,
 can provide only reasonable, not absolute, assurance that the objectives of the disclosure controls and procedures are met. Additionally, in designing disclosure controls and procedures, our management necessarily was required to apply its
 judgment in evaluating the cost-benefit relationship of possible disclosure controls and procedures. The design of any disclosure controls and procedures also is based in part upon certain assumptions about the likelihood of future events, and
 there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions.

 Management's Report on Internal Control over Financial Reporting

 Our management is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange
 Act. Our management conducted an assessment of the effectiveness of our internal control over financial reporting based on the framework established in the 2013 Internal Control-Integrated Framework issued

 by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Based on this assessment, our management has determined that our internal control over financial reporting was effective as of December 31, 2023.

 Changes in Internal Control over Financial Reporting

 There has been no change in our internal control over financial reporting in our most recent fiscal quarter that has materially affected, or is reasonably likely to
 materially affect, our internal control over financial reporting.

 ITEM 9B.

 Other Information

 During the three (3) months ended December 31, 2023, no director or officer adopted
 or terminated any contract, instruction or written plan for the purchase or sale of company securities intended to satisfy the
 affirmative defense conditions of Rule 10b5-1(c) of the Exchange Act and/or any non-Rule 10b5-1 trading arrangement.

 ITEM 9C.

 Disclosure Regarding Foreign Jurisdictions that Prevent Inspections.

 Not applicable.

 Certain information required by Part III is omitted from this Annual Report on Form 10-K because we intend to file a definitive Proxy Statement for the Annual Meeting of
 Stockholders pursuant to Regulation 14A of the Securities Exchange Act of 1934 (the Proxy Statement), not later than 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K, and the applicable information included in
 the Proxy Statement is incorporated herein by reference.

 ITEM 10.

 Directors, Executive Officers and Corporate Governance

 The information required by this Item is incorporated herein by reference to the Proxy Statement.

 ITEM 11.

 Executive Compensation

 The information required by this Item is incorporated herein by reference to the Proxy Statement.

 ITEM 12.

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

 The information required by this Item is incorporated herein by reference to the Proxy Statement.

 ITEM 13.

 Certain Relationships and Related Transactions, and Director Independence

 The information required by this Item is incorporated herein by reference to the Proxy Statement.

 ITEM 14.

 Principal Accounting Fees and Services

 The information required by this Item is incorporated herein by reference to the Proxy Statement.

 ITEM 15.

 Exhibits, Financial Statement Schedules

 (a) The following documents are filed as part of this report:

 (1)

 Financial Statements:

 The information concerning our consolidated financial statements, and Report of Independent Registered Public Accounting Firm (PCAOB ID 185) required by this Item is incorporated by reference herein to the section of this Annual Report on Form 10-K in Item 8, entitled "Financial
 Statements and Supplementary Data".

 (2)

 Financial Statement Schedules:

 All schedules have been omitted because the required information is not present or not present in amounts sufficient to require submission of the schedules, or because the
 information required is shown in the financial statements or the notes thereto.

 (3)

 Exhibits:

 The list of exhibits required by Item 601 of Regulation S-K is set forth in the Exhibit Index immediately preceding the signature page to this Annual Report on Form 10-K and
 is incorporated herein by reference.

 ITEM 16.

 Form 10-K Summary

 We may voluntarily include a summary of information required by Form 10-K under this Item 16. We have elected not to include such summary information.

 Exhibit

 Number

 Exhibit Description

 2.1

 Agreement and Plan of Merger and Reorganization, dated November 23, 2018, by and among Edge Therapeutics, Inc., Echos Merger Sub, Inc. and PDS
 Biotechnology Corporation (filed as Exhibit 2.1 to the Company's Current Report on Form 8-K filed on November 26, 2018, and incorporated by reference herein).

 2.2

 Amendment No. 1 to Agreement and Plan of Merger and Reorganization, dated January 24, 2019, by and among Edge Therapeutics, Inc., Echos Merger Sub,
 Inc. and PDS Biotechnology Corporation (filed as Exhibit 2.1 to the Company's Current Report on Form 8-K filed on January 30, 2019, and incorporated by reference herein).

 3.1

 Eighth Amended and Restated Certificate of Incorporation of Edge Therapeutics, Inc. (filed as Exhibit 3.1 to the Company's Current Report on Form 8-K
 filed on October 6, 2015, and incorporated by reference herein).

 3.2

 Third Amended and Restated Bylaws of PDS Biotechnology Corporation (filed as Exhibit 3.1 to the Company's Current Report on Form 8-K filed on March
 15, 2022, and incorporated by reference herein).

 3.3

 Certificate of Amendment to Amended and Restated Certificate of Incorporation (filed as Exhibit 3.1 to the Company's Current Report on Form 8-K on
 March 18, 2019, and incorporated by reference herein).

 3.4

 Certificate of Amendment to Amended and Restated Certificate of Incorporation (filed as Exhibit 3.2 to the Company's Current Report on Form 8-K on
 March 18, 2019, and incorporated by reference herein).

 4.1

 Form of Certificate of Common Stock (filed as Exhibit 4.1 to the Company's Pre-Effective Amendment No. 1 to the registration statement on Form S-1
 (File No. 333- 206416) filed on September 21, 2015, and incorporated by reference herein).

 4.2

 Description of Securities (filed as Exhibit 4.10 to the Company's Annual Report on Form 10-K filed on March 27, 2020, and incorporated by reference
 herein).

 4.3

 Form of Indenture (filed as Exhibit 4.3 to the Company's registration statement on Form S-3 (File No. 333-267041) on August 24, 2022, and
 incorporated by reference herein).

 10.1

 Form of Warrant issued under the Venture Loan and Security Agreement, dated August 24, 2022 (filed as Exhibit 10.1 to the Company's Quarterly Report
 on Form 10-Q on November 14, 2022, and incorporated by reference herein).

 10.2++

 Venture Loan and Security Agreement, dated August 24, 2022, by and among Horizon Technology Finance Corporation, as a lender and collateral agent,
 Powerscourt Investments XXV, LP, as a lender, PDS Operating Corporation, as a guarantor, and PDS Biotechnology Corporation, as borrower (filed as Exhibit 10.2 to the Company's Quarterly Report on Form 10-Q on November 14, 2022, and
 incorporated by reference herein).

 10.3

 Clinical Trial Collaboration and Supply Agreement, dated May 19, 2017, by and between PDS Biotechnology Corporation and MSD International GmbH (filed
 as Exhibit 10.24 to the Company's Registration Statement on Form S-4/A on January 25, 2019, and incorporated by reference herein).

 10.4

 Patent License Agreement, dated January 5, 2015, by and between PDS Biotechnology Corporation and National Institutes of Health, as amended by First
 Amendment, dated August 5, 2015 (filed as Exhibit 10.25 to the Company's Registration Statement on Form S-4/A on January 25, 2019, and incorporated by reference herein).

 10.5

 Cost Reimbursement Agreement, dated November 1, 2015, by and between PDS Biotechnology Corporation and University of Kentucky Research Foundation
 (filed as Exhibit 10.27 to the Company's Registration Statement on Form S-4/A on January 25, 2019, and incorporated by reference herein).

 10.6

 Public Health Service Cooperative Research & Development Agreement for Intramural-PHS Clinical Research, dated effective as of February 2, 2015,
 by and between the National Cancer Institute and PDS Biotechnology Corporation (filed as Exhibit 10.28 to the Company's Registration Statement on Form S-4/A on January 25, 2019, and incorporated by reference herein).

 10.7

 DOTAP Chloride Enantiomer License Agreement effective November 1, 2008, between Merck Eprova AG and PDS Biotechnology Corporation (filed as Exhibit
 10.29 to the Company's Registration Statement on Form S-4/A on January 25, 2019, and incorporated by reference herein).

 10.8++

 License Agreement dated as of December 30, 2022 by and between Merck KGaA, Darmstadt, Germany and PDS Biotechnology Corporation (filed as Exhibit
 10.9 to the Company's Annual Report on Form 10-K filed on March 28, 2023, and incorporated by reference herein).

 10.9

 Share Transfer Agreement by and between PDS Biotechnology Corporation and Merck KGaA, Darmstadt, Germany. (filed as Exhibit 10.1 to the Company's
 Current Report on Form 8-K on January 3, 2023, and incorporated by reference herein).

 10.10+

 PDS Biotechnology 2010 Equity Incentive Plan, and forms of agreement thereunder (filed as Exhibit 10.2 to the Company's Registration Statement on
 Form S-1/A on September 21, 2015, and incorporated by reference herein).

 10.11+

 Third Amended and Restated PDS Biotechnology Corporation 2014 Equity Incentive Plan (filed as Exhibit 10.1 to the Company's Current Report on Form
 8-K on July 17, 2023, and incorporated by reference herein).

 10.12+

 Employee Stock Option Agreement under the Second Amended and Restated PDS Biotechnology Corporation 2014 Equity Incentive Plan (filed as Exhibit 10.4
 to the Company's Current Report on Form 8-K filed on December 9, 2020, and incorporated by reference herein).

 10.13+

 PDS Biotechnology Corporation 2009 Stock Option Plan, as amended (filed as Exhibit 99.1 to the Company's Registration Statement on Form S-8 on June
 4, 2019, and incorporated by reference herein).

 10.14+

 PDS Biotechnology Corporation 2018 Stock Option Plan (filed as Exhibit 99.2 to the Company's Registration Statement on Form S-8 on June 4, 2019, and
 incorporated by reference herein).

 10.15+

 Form of PDS Biotechnology Corporation Option Agreement for 2009 Stock Option Plan, as amended (filed as Exhibit 99.3 to the Company's Registration
 Statement on Form S-8 on June 4, 2019, and incorporated by reference herein).

 10.16+

 Form of PDS Biotechnology Corporation Option Agreement for 2018 Stock Incentive Plan (filed as Exhibit 99.4 to the Company's Registration Statement
 on Form S-8 on June 4, 2019, and incorporated by reference herein).

 10.17+

 PDS Biotechnology Corporation 2019 Inducement Plan, as amended (filed as Exhibit 10.1 to the Company's Current Report on Form 8-K filed on January
 22, 2024, and incorporated by reference herein).

 10.18+

 Form of Stock Option Grant Notice and Stock Option Agreement under the 2019 Inducement Plan (filed as Exhibit 10.2 to the Company's Current Report on
 Form 8-K on June 20, 2019, and incorporated by reference herein).

 10.19+

 Form of Indemnification Agreement for officers and directors (filed as Exhibit 10.9 to the Company's Registration Statement on Form S-1 on August 14,
 2015, and incorporated by reference herein).

 10.20

 Sublease Agreement, effective as of March 5, 2020, by and between PDS Biotechnology Corporation and COWI North America, Inc. (filed as Exhibit 10.37
 to the Company's Annual Report on Form 10-K filed on March 27, 2020, and incorporated by reference herein).

 10.21++

 Patent License Agreement dated as of November 5, 2021, by and between PDS Biotechnology Corporation and the U.S. Department of Health and Human
 Services, as represented by the National Cancer Institute (filed as Exhibit 10.19 to the Company's Annual Report on Form 10-K filed on March 31, 2022, and incorporated by reference herein).

 10.22++

 Option Agreement with University of Georgia Research Foundation, Inc. effective as of October 25, 2021 (filed as Exhibit 10.20 to the Company's
 Annual Report on Form 10-K filed on March 31, 2022, and incorporated by reference herein).

 10.23+

 PDS Biotechnology Corporation Change of Control Severance Plan effective as of March 14, 2022 (filed as Exhibit 10.21 to the Company's Annual Report
 on Form 10-K filed on March 31, 2022, and incorporated by reference herein)

 10.24 +++

 Amended and Restated Executive Employment Agreement by and between Frank K. Bedu-Addo and PDS Biotechnology Corporation, effective as of March 14,
 2022 (filed as Exhibit 10.22 to the Company's Annual Report on Form 10-K filed on March 31, 2022, and incorporated by reference herein).

 10.25 +++

 Executive Employment Agreement by and between Gregory Conn, Ph. D. and PDS Biotechnology Corporation, effective as of March 14, 2022 (filed as
 Exhibit 10.23 to the Company's Annual Report on Form 10-K filed on March 31, 2022, and incorporated by reference herein).

 10.26 * +++

 Executive Employment Agreement by and between Lars Boesgaard and PDS Biotechnology Corporation, effective as of November 28, 2023

 10.27*+++

 Executive Employment Agreement by and between Kirk V. Shephard, M.D. and PDS Biotechnology Corporation, effective as of January 22, 2024.

 10.28+++

 Executive Employment Agreement by and between Spencer Brown and PDS Biotechnology Corporation, effective as of June 1, 2022 (filed as Exhibit 10.1
 to the Company's Quarterly Report on Form 10-Q filed on August 8, 2022, and incorporated herein by reference).

 19 *

 PDS Biotechnology Corporation Policy on Insider Trading

 21.1 *

 Subsidiary of PDS Biotechnology Corporation.

 23.1 *

 Consent of KPMG LLP.

 31.1 *

 Principal Executive Officer's Certifications Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

 31.2 *

 Principal Financial Officer's Certifications Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

 32.1 *

 Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (furnished herewith).

 32.2 *

 Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (furnished herewith).

 97 *

 PDS Biotechnology Corporation Policy for Recovery of Erroneously Awarded Incentive Compensation.

 101.INS*

 101.SCH*

 +

 Indicates management contract or compensatory plan.

 *

 Filed herewith unless otherwise indicated as furnished herewith.

 **

 Confidential Treatment has been requested with respect to certain portions of this Exhibit. Omitted portions have been filed separately with the Securities and Exchange Commission.

 ++

 Certain portions of this exhibit have been redacted pursuant to Item 601(b)(10)(iv) of Regulation S-K.

 SIGNATURES

 Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this Form 10-K to be signed on its behalf by the undersigned,
 thereunto duly authorized.

 PDS Biotechnology Corporation

 By:

 /s/ Frank Bedu-Addo

 Frank Bedu-Addo, Ph. D.

 President and Chief Executive Officer

 By:

 /s/ Lars Boesgaard

 Lars Boesgaard

 Chief Financial Officer

 Pursuant to the requirements of the Securities Exchange Act of 1934, this Form 10-K has been signed by the following persons in the capacities indicated below and on the dates indicated:

 Signature

 Title

 Date

 /s/ Frank Bedu-Addo

 President and Chief Executive Officer and Director

 Frank Bedu-Addo, Ph. D.

 (Principal Executive Officer)

 /s/ Lars Boesgaard

 Chief Financial Officer

 Lars Boesgaard

 (Principal Financial and Accounting Officer)

 /s/ Gregory Freitag

 Gregory Freitag J.D., CPA

 /s/ Stephen Glover

 Stephen Glover

 /s/ Sir Richard Sykes

 Sir Richard Sykes

 /s/ Kamil Ali-Jackson

 Kamil Ali-Jackson

 /s/ Otis W. Brawley

 Otis W. Brawley

 /s/ Ilian Iliev

 Ilian Iliev

 Report of Independent Registered Public Accounting Firm

 To the Stockholders and Board of
 Directors

 PDS Biotechnology Corporation:

 Opinion on the Consolidated Financial Statements

 We have audited the accompanying consolidated balance sheets of PDS Biotechnology Corporation and subsidiary (the Company) as
 of December 31, 2023 and 2022, the related consolidated statements of operations and comprehensive loss, changes in stockholders' equity, and cash flows for the years then ended, and the related notes
 (collectively, the consolidated financial statements). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2023 and 2022, and the results
 of its operations and its cash flows for each of the years then ended, in conformity with U.S. generally accepted accounting principles.

 Going Concern

 The accompanying consolidated financial statements have been prepared assuming that the Company will continue as a going concern. As discussed in
 Note 3 to the consolidated financial statements, the Company has experienced net losses and negative cash flows from operations that raise substantial doubt about its ability to continue as a going
 concern. Management's plans in regard to these matters are also described in Note 3. 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 audit. 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 audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit 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 audit, 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 audit 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 audit 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 audit provides a reasonable basis for our
 opinion.

 Critical Audit Matters

 Critical audit matters are matters arising from the current period audit of the consolidated financial statements that were communicated or
 required to be communicated to the audit committee and that: (1) relate to accounts or disclosures that are material to the consolidated financial statements and (2) involved our especially challenging, subjective, or complex judgments. We
 determined that there are no critical audit matters.

 /s/ KPMG LLP

 We have served as the Company's auditor since 2019.

 Short Hills, New Jersey

 Consolidated Balance Sheets

 2023

 2022

 ASSETS

 Current assets:

 Cash and cash equivalents

 $

 56,560,517

 $

 Prepaid expenses and other

 2,494,558

 2,660,230

 Total current assets

 59,055,075

 76,480,390

 Property and equipment, net

 134,132

 -

 Financing lease right-to-use assets

 200,873

 374,888

 Operating lease right-to-use asset

 -

 152,645

 Total assets

 $

 59,390,080

 $

 77,007,923

 LIABILITIES AND STOCKHOLDERS' EQUITY

 Current liabilities:

 Accounts payable

 $

 6,982,824

 $

 1,219,287

 Accrued expenses

 2,424,692

 8,313,708

 Notes payable - short term

 4,166,667

 -

 Financing lease obligation - short term

 55,794

 56,612

 Operating lease obligation - short term

 -

 231,429

 Total current liabilities

 13,629,977

 9,821,036

 Noncurrent liabilities:

 Notes payable, net of debt discount

 19,506,183

 23,020,844

 Financing lease obligation-long term

 122,973

 164,013

 Operating lease obligation-long term

 -

 -

 Total liabilities

 33,259,133

 33,005,893

 STOCKHOLDERS' EQUITY

 Common stock, $ 0.00033 par value, 75,000,000 shares authorized at December 31, 2023 and December 31, 2022, 33,094,521 shares and 30,170,317 shares
 issued and outstanding at December 31, 2023 and December 31, 2022, respectively

 10,921

 9,956

 Additional paid-in capital

 170,620,641

 145,550,491

 Accumulated deficit

 ( 144,500,615

)

 ( 101,558,417

)

 Total stockholders' equity

 26,130,947

 44,002,030

 Total liabilities and stockholders' equity

 $

 59,390,080

 $

 77,007,923

 See accompanying notes to the consolidated financial statements.

 Consolidated Statements of Operations and Comprehensive Loss

 2023

 2022

 Operating expenses:

 Research and development expenses

 $

 27,762,784

 $

 29,431,027

 General and administrative expenses

 15,282,450

 12,241,394

 Total operating expenses

 43,045,234

 41,672,421

 Loss from operations

 ( 43,045,234

)

 ( 41,672,421

)

 Interest income (expense), net

 Interest income

 2,902,939

 935,180

 Interest expense

 ( 4,205,922

)

 ( 1,316,519

)

 Interest income (expense), net

 ( 1,302,983

)

 ( 381,339

)

 Loss before income taxes

 ( 44,348,217

)

 ( 42,053,760

)

 Benefit from income taxes

 1,406,019

 1,198,905

 Net loss and comprehensive loss

 $

 ( 42,942,198

)

 $

 ( 40,854,855

)

 Per share information:

 Net loss per share, basic and diluted

 $

 ( 1.39

)

 $

 ( 1.43

)

 Weighted average common shares outstanding basic and diluted

 30,952,060

 28,599,221

 See accompanying notes to the consolidated financial statements.

 Consolidated Statements of Changes in Stockholders' Equity

 Common Stock

 Additional

 Accumulated

 Shares Issued

 Amount

 Paid-in Capital

 Deficit

 Total Equity

 January 1, 2022

 28,448,612

 $

 9,387

 $

 123,904,602

 $

 ( 60,703,562

)

 $

 63,210,427

 –

 –

 1,128,973

 –

 1,128,973

 2,282

 7,487

 –

 7,488

 –

 –

 –

 ( 8,473,522

)

 ( 8,473,522

)

 Balance - March 31, 2022

 28,450,894

 $

 9,388

 $

 125,041,062

 $

 ( 69,177,084

)

 $

 55,873,366

 –

 –

 1,348,601

 –

 1,348,601

 7,794

 22,426

 –

 22,429

 –

 –

 –

 ( 5,819,200

)

 ( 5,819,200

)

 Balance - June 30, 2022

 28,458,688

 $

 9,391

 $

 126,412,089

 $

 ( 74,996,284

)

 $

 51,425,196

 –

 –

 1,344,349

 –

 1,344,349

 Issuance of warrants

 –

 –

 1,713,741

 –

 1,713,741

 –

 –

 –

 ( 7,424,450

)

 ( 7,424,450

)

 Balance September 30, 2022

 28,458,688

 $

 9,391

 $

 129,470,179

 $

 ( 82,420,734

)

 $

 47,058,836

 –

 –

 1,374,233

 –

 1,374,233

 269,535

 1,563,756

 –

 1,563,845

 Net shares for settlements of equity awards and taxes

 ( 175,184

)

 ( 58

)

 ( 1,713,247

)

 –

 ( 1,713,305

)

 Issuance of common stock for licensing agreement

 378,787

 4,999,863

 –

 4,999,988

 Issuances of common stock from the Sales Agreement, net

 1,238,491

 9,855,707

 –

 9,856,116

 –

 –

 –

 ( 19,137,683

)

 ( 19,137,683

)

 Balance - December 31, 2022

 30,170,317

 $

 9,956

 $

 145,550,491

 $

 ( 101,558,417

)

 $

 44,002,030

 Common Stock

 Additional

 Accumulated

 Shares Issued

 Amount

 Paid-in Capital

 Deficit

 Total Equity

 January 1, 2023

 30,170,317

 $

 9,956

 $

 145,550,491

 $

 ( 101,558,417

)

 $

 44,002,030

 –

 –

 2,080,319

 –

 2,080,319

 Issuances of common stock from the Sales Agreement, net

 553,293

 4,588,339

 –

 4,588,522

 –

 –

 –

 ( 9,659,918

)

 ( 9,659,918

)

 Balance - March 31, 2023

 30,723,610

 $

 10,139

 $

 152,219,149

 $

 ( 111,218,335

)

 $

 41,010,953

 –

 –

 2,105,538

 -

 2,105,538

 1,409

 8,848

 -

 8,849

 Issuance of common stock for consulting agreement

 100,000

 609,967

 -

 610,000

 Issuance of common stock from the Sales Agreement, net

 43,169

 243,729

 -

 243,743

 –

 –

 –

 ( 11,534,895

)

 ( 11,534,895

)

 Balance - June 30, 2023

 30,868,188

 $

 10,187

 $

 155,187,231

 $

 ( 122,753,230

)

 $

 32,444,188

 –

 –

 2,073,607

 –

 2,073,607

 Issuance of common stock from the Sales Agreement, net

 139,575

 815,156

 –

 815,202

 –

 –

 –

 ( 10,849,169

)

 ( 10,849,169

)

 Balance - September 30, 2023

 31,007,763

 $

 10,233

 $

 158,075,994

 $

 ( 133,602,399

)

 $

 24,483,828

 –

 –

 1,354,857

 –

 1,354,857

 80,526

 300,067

 –

 300,093

 Issuance of common stock for consulting agreement

 100,000

 410,967

 –

 411,000

 Issuance of common stock from the Sales Agreement, net

 1,906,232

 10,478,756

 –

 10,479,385

 –

 –

 –

 ( 10,898,216

)

 ( 10,898,216

)

 Balance - December 31, 2023

 33,094,521

 $

 10,921

 $

 170,620,641

 $

 ( 144,500,615

)

 $

 26,130,947

 See accompanying notes to the financial statements.

 Consolidated Statements of Cash Flows

 2023

 2022

 Cash flows from operating activities:

 $

 ( 42,942,198

)

 $

 ( 40,854,855

)

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

 7,614,321

 5,196,156

 Issuance of shares in licensing agreement

 -

 4,999,988

 Issuance of shares in consulting agreement

 1,021,000

 -

 Amortization of debt discount

 652,006

 183,914

 Depreciation expense

 17,359

 Operating lease expense

 160,685

 241,029

 Finance lease amortization expense

 39,967

 48,992

 Changes in operating assets and liabilities:

 Prepaid expenses and other assets

 165,672

 ( 1,062,661

)

 Finance lease right-to-use asset

 -

 ( 423,880

)

 Accounts payable

 5,763,537

 ( 90,116

)

 Accrued expenses

 ( 5,889,016

)

 6,126,004

 Finance lease liabilities

 -

 220,625

 Operating lease liabilities

 ( 239,469

)

 ( 294,988

)

 Net cash used in operating activities

 ( 33,636,136

)

 ( 25,709,706

)

 Cash flows from financing activities:

 Proceeds from issuance of note payable

 -

 25,000,000

 Payment for debt issuance costs

 -

 ( 449,329

)

 Proceeds from exercise of stock options

 308,942

 151,416

 Payments of finance lease obligations

 ( 59,300

)

 -

 Payment of taxes in equity transaction

 -

 ( 270,959

)

 Proceeds from issuances of common stock, net of issuance costs

 16,126,851

 9,856,116

 Net cash provided by financing activities

 16,376,493

 34,287,244

 Net (decrease) increase in cash and cash equivalents

 ( 17,259,643

)

 8,577,538

 Cash and cash equivalents at beginning of period

 65,242,622

 Cash and cash equivalents at end of period

 $

 56,560,517

 $

 Supplemental information of cash and non-cash transactions:

 Cash paid for interest

 $

 3,535,071

 $

 852,221

 Fair value of warrants issued in connection with debt

 $

 -

 $

 1,713,741

 See accompanying notes to the consolidated financial statements.

 Notes to Consolidated Financial Statements

 Note 1 – Nature of Operations

 PDS Biotechnology Corporation, a Delaware corporation (the "Company" or "PDS Biotech"), is a clinical-stage immunotherapy company developing a growing pipeline of molecularly targeted
 immunotherapies designed to overcome the limitations of current immunotherapy and vaccine technologies. The Company develops proprietary platforms designed to train and enable the immune system to attack and destroy disease; Versamune,
 and Versamune in combination with PDS01ADC for treatments in oncology and Infectimune for treatments in infectious diseases. When paired with an antigen, which is a disease-related protein that is recognizable by the immune system,
 Versamune and Infectimune have both been shown to induce, in vivo, large quantities of high-quality, highly potent polyfunctional CD4
 helper and CD8 killer T cells, a specific sub-type of T cell that is more effective at killing infected or target cells. PDS01ADC is a novel investigational tumor-targeting fusion protein of Interleukin 12 that enhances the proliferation,
 potency, infiltration and longevity of T cells in the tumor microenvironment and is therefore designed to overcome the limitations of cytokine therapy which today has resulted in high toxicity and limited therapeutic potential.
 Infectimune is also designed to promote the induction of disease-specific neutralizing antibodies. The Company's immuno-oncology product candidates are of potential interest for use as a component of combination product candidates (for
 example, in combination with other leading technologies such as immune checkpoint inhibitors) to provide more effective treatments across a range of advanced and/or refractory cancers. The Company is also evaluating its immunotherapies as
 monotherapies in early-stage disease. The Company is developing targeted product candidates to treat several cancers, including Human Papillomavirus (HPV) associated cancers, melanoma, colorectal, lung, breast and prostate cancers. The
 Company's infectious disease candidate is of potential interest for use in universal influenza vaccines.

 The Company has received numerous patents, submitted patent applications and owns substantial know-how and trade secrets
 related to its Versamune and PDS01ADC product platforms. PDS Biotech holds thirteen ( 13) U.S. patents with
 granted claims directed to its platform technology and twenty-four ( 24) pending U.S. patent applications. These issued patents will expire in 2026 to 2037. Should the more recently submitted patent applications currently in prosecution be issued, these
 will expire in 2033 through 2043 assuming no patent term extensions are granted. As of March 1, 2024, PDS Biotech holds seventy-four
 ( 74) issued foreign patents and forty-four
 ( 44) pending or published foreign patent applications. Most of the Company's international issued patents are issued in multiple
 countries including Europe, Japan and Australia, and all of which cover compositions of matter and methods of use related to its platform technology. These issued patents will expire in 2028-2037, or later if patent term extension applies. Included in the patents above is a patent protecting the use of Versamune in combination
 wit h PDS01ADC.

 Licensed patents

 The Company has licensed patented antigens from the U.S. government for use in its cationic lipid immunotherapies. The Company has licensed T cell receptor gamma alternate reading frame protein ("TARP")
 from the National Cancer Institute ("NCI") to develop and commercialize TARP peptide-based therapies in combination with the Company's Versamune technology and any other of the Company's proprietary technologies for prostate and breast
 cancers and acute myeloid leukemia. These patents are directed to immunogenic peptides and peptide derivatives for the treatment of prostate and breast cancer treatment and multi-epitope TARP peptide vaccine and uses thereof. These licensed
 antigens are incorporated in PDS0102 with Versamune. The Company has licensed mucin-1 ("MUC1") novel highly immunogenic agonist epitopes of MUC1 developed by the National Cancer Institute. MUC1 is highly expressed in multiple solid tumors
 and has been shown to be associated with drug resistance and poor disease prognosis in breast, colorectal, lung and ovarian cancers, for which PDS0103 is being developed. The Company has been granted patents and is pursuing additional
 patents that cover compositions and methods of use of cationic lipid immunotherapies with each of the licensed technologies.

 The Company entered into a non-exclusive agreement to license Computationally Optimized Broadly Reactive Antigen (COBRA) with
 the University of Georgia Research Foundation. These antigens are developed by Dr. Ted Ross at the University of Georgia. The Company believes the combination of these antigens along with its proprietary Versamune technology has the potential to induce a broad immune response as a universal
 flu vaccine.

 Exclusive License Agreement

 On December 30, 2022, the Company entered into a License Agreement (the "License Agreement") with Merck KGaA,
 Darmstadt, Germany, pursuant to which Merck KGaA, Darmstadt, Germany has granted the Company an exclusive (even as to Merck KGaA), worldwide, sublicensable, milestone and royalty-bearing right and license to certain patent rights and
 certain related data (the "Licensed Technology") to develop, manufacture, use, commercialize and otherwise exploit any product containing NHS-IL12 fusion protein formerly known as M9241, now PDS01ADC.

 In consideration for the rights granted by Merck KGaA, Darmstadt, Germany, the Company (i) agreed to make a one-time
 up-front cash payment of $ 5.0 million to Merck KGaA, Darmstadt, Germany, and (ii) entered into a Share Transfer Agreement dated
 December 30, 2022 (the "Share Transfer Agreement"), pursuant to which the Company issued 378,787 shares of its common stock
 (the "Shares") to Merck KGaA, Darmstadt, Germany in a private placement for an aggregate value of $ 5.0 million, as measured by
 the closing price of the Company's common stock on the Nasdaq Capital Market as of December 30, 2022.

 Pursuant to the License Agreement, the Company agreed to make certain
 commercial sales milestone and royalty payments.

 Note 2 – Summary of Significant Accounting Policies

 (A)

 Use of estimates:

 The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and
 assumptions that affect the reported amounts of assets and liabilities and the reported amounts of expenses at the date of the consolidated financial statements and during the reporting periods, and to disclose contingent assets and
 liabilities at the date of the consolidated financial statements. Actual results could differ from those estimates. The most significant estimate relates to the fair value of securities underlying stock-based compensation.

 (B)

 Significant risks and uncertainties:

 The Company's operations are subject to a number of factors that may affect its operating results and financial condition.
 Such factors include, but are not limited to: the clinical and regulatory development of its products, the Company's ability to preserve its cash resources, the Company's ability to add product candidates to its pipeline, the Company's
 intellectual property, the Company's ability to complete clinical trials necessary to obtain regulatory product licenses, competition from products manufactured and sold or being developed by other companies, the price of, and demand for,
 Company products if approved for sale, the Company's ability to negotiate favorable licensing or other manufacturing and marketing agreements for its products, and the Company's ability to raise capital.

 The Company currently has no commercially approved products. As such, there can be no assurance that the Company's future
 research and development programs will be successfully commercialized. Developing and commercializing a product requires significant time and capital and is subject to regulatory review and approval as well as competition from other
 biotechnology and pharmaceutical companies. The Company operates in an environment of rapid change and is dependent upon the continued services of its employees and consultants and obtaining and protecting its intellectual property.

 (C)

 Cash equivalents and concentration of cash balance:

 The Company considers all highly liquid securities with a maturity weighted average of less than three months to be cash
 equivalents. The Company's cash and cash equivalents in bank deposit accounts, at times, may exceed federally insured limits.

 (D)

 Property and equipment:

 Property and equipment are recorded at cost. Depreciation is recorded for property and equipment using the straight-line
 method over the estimated useful life of five years. The Company reviews the recoverability of all long-lived assets, including
 the related useful lives, whenever events or changes in circumstances indicate that the carrying amount of a long-lived asset might not be recoverable.

 (E)

 Research and development:

 Costs incurred in connection with research and development activities are expensed as incurred. These costs include licensing
 fees to use certain technology in the Company's research and development projects as well as fees paid to consultants and entities that perform certain research and testing on behalf of the Company. Under the terms of the License Agreement,
 the Company agreed to an initial payment of $ 5 million in cash and an additional $ 5 million in Company Stock, plus future milestone and royalty payments. The Company accounts for milestone payments as expenses in research and development and royalties
 are recorded as a reduction in revenues.

 (F)

 Patent costs:

 The Company expenses patent costs as incurred and classifies such costs as general and administrative expenses in the
 accompanying statements of operations and comprehensive loss.

 (G)

 Stock-based compensation:

 The Company accounts for its stock-based compensation in accordance with ASC Topic 718, Compensation—Stock
 Compensation ("ASC 718"). ASC 718 requires all stock-based payments to employees, directors and non-employees to be recognized as expense in the consolidated statements of operations and comprehensive loss based on their grant date fair
 values. In order to determine the fair value of stock options on the date of grant, the Company uses the Black-Scholes option-pricing model. Inherent in this model are assumptions related to expected stock-price volatility, option
 term, risk-free interest rate and dividend yield. While the risk-free interest rate and dividend yield are less subjective assumptions that are based on factual data derived from public sources, the expected stock-price volatility and option
 term assumptions require a greater level of judgment. The Company expenses the fair value of its stock-based compensation awards to employees and directors on a straight-line basis over the requisite service period, which is generally the
 vesting period. The Company recognizes forfeitures as they occur.

 (H)

 Net loss per common share:

 Basic net loss per common share is calculated by dividing the net loss by the weighted average number of common stock shares
 outstanding during the period. Diluted net loss per common share is the same as basic net loss per common share, because potentially dilutive securities would have an antidilutive effect as the Company incurred a net loss for the years ended
 December 31, 2023 and 2022.

 The potentially dilutive securities excluded from the determination of diluted loss per share as their effect is antidilutive,
 are as follows:

 2023

 2022

 Stock options to purchase common stock

 5,029,345

 4,171,311

 Warrants to purchase common stock

 466,112

 506,229

 Total

 5,495,457

 4,677,540

 (I)

 Income taxes:

 The Company provides for deferred income taxes under the asset and liability method, which requires deferred tax assets and
 liabilities to be recognized for the future tax consequences attributable to net operating loss carryforwards and for differences between the financial statement carrying amounts and the respective tax bases of assets and liabilities.
 Valuation allowances are recorded to reduce deferred tax assets to the amount that will more likely than not be realized.

 (J)

 Fair value of financial instruments:

 ASC Topic 820, Fair Value Measurement Disclosures, specifies a hierarchy of valuation techniques based on whether the inputs
 to those valuation techniques are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect market assumptions. The hierarchy gives the highest priority to
 unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement).

 The three levels of the fair value hierarchy are as follows:

 Level 1 — Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. Level 1 primarily consists of financial
 instruments whose value is based on quoted market prices such as exchange-traded instruments and listed equities.

 Level 2 — Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly (e.g., quoted prices of similar assets or liabilities in active
 markets, or quoted prices for identical or similar assets or liabilities in markets that are not active). Level 2 includes financial instruments that are valued using models or other valuation methodologies.

 Level 3 — Unobservable inputs for the asset or liability. Financial instruments are considered Level 3 when their fair values are determined using pricing models, discounted cash flows or similar techniques
 and at least one significant model assumption or input is unobservable.

 (K)

 Leases:

 The Company determines if an arrangement is a lease at inception and recognizes the lease in accordance with ASC Topic 842, Leases. Both financing and operating leases are included in right-of-use (ROU) assets, lease
 obligations short-term and lease obligations long-term in the Company's consolidated balance sheets. ROU assets represent the right to use an underlying asset for the lease term and lease liabilities represent the Company's obligation
 to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at the lease commencement date based on the present value of the lease payments over the lease term. The Company determines the
 portion of the lease liability that is current as the difference between the calculated lease liability at the end of the current period and the lease liability that is projected 12 months from the current period.

 (L)

 Subsequent events:

 Subsequent events have been evaluated through the date these financial statements were issued. See Note 14.

 (M)

 New accounting standards adopted:

 Recently Adopted Accounting Pronouncements

 Recently issued accounting pronouncements did not, or are not believed by management to, have a material effect on
 our present or future consolidated financial statements.

 Recent Accounting Pronouncements Not Yet Adopted

 In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, which improves the disclosures required for reportable segments in the Company's annual and interim
 financial statements, primarily through enhanced disclosures about significant segment expenses. ASU 2023-07 is effective for annual periods beginning after December 15, 2023 and interim periods within fiscal years beginning after
 December 15, 2024. Adoption of this ASU should be applied retrospectively to all prior periods presented in the financial statements. Early adoption is permitted. The Company is currently evaluating the impact that adopting this
 standard will have on the consolidated financial statements and disclosures.

 In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures, which requires public entities, on an annual basis, to
 provide disclosures of specific categories in the rate reconciliation, additional information for reconciling items that meet a quantitative threshold and income taxes paid disaggregated by jurisdiction. ASU 2023-09 is effective
 for annual periods beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact that adopting this standard will have on the consolidated financial statements and disclosures.

 Note 3 – Liquidity and Capital Resources

 As of December 31, 2023, the Company had $ 56.6 million of cash and cash equivalents. The Company's primary uses of cash are to fund operating expenses, primarily research
 and development expenditures. Cash used to fund operating expenses is impacted by the level of activities undertaken, as well as the timing of when the Company pays these expenses, as reflected in the change to the Company's outstanding
 accounts payable and accrued expenses. Since inception, the Company has experienced net losses and negative cash flows from operations each fiscal year. The Company has no revenues and expects to continue to incur operating losses for the
 foreseeable future and may never become profitable. In addition, the Loan and Security Agreement allows for the lenders to
 call the outstanding balance of the term loans if the minimum cash balances outlined in the Loans and Security Agreement are not maintained.

 The Company funds its operations through equity and/or debt financings such as the following:

 In April 2022, the Company received approximately $ 1.2 million from the net sale of tax benefits to an unrelated, profitable New Jersey corporation pursuant the Company's participation in the New Jersey Technology
 Business Tax Certificate Transfer NOL program for tax year 2020.

 In August 2022, the Company filed a shelf registration statement, or the 2022 Shelf Registration Statement, with the SEC for
 the issuance of common stock, preferred stock, warrants, rights, debt securities, and units, which the Company refers to collectively as the Shelf Securities, up to an aggregate amount of $ 150 million, $ 50 million of which covers the offer,
 issuance and sale by the Company of its common stock under the Sales Agreement (as discussed below). The 2022 Shelf Registration Statement was declared effective on September 2, 2022.

 In
 August 2022, the Company entered into an At Market Issuance Sales Agreement, or the Sales Agreement, with B. Riley Securities, Inc. and BTIG, LLC, each an Agent and collectively the Agents, with respect to an at-the-market offering program
 under which the Company may offer and sell, from time to time at its sole discretion, shares of its common stock, having an aggregate offering price of up to $ 50.0 million, or the Placement Shares, through or to the Agents, as sales agents or principals. Upon delivery of a placement notice and subject to the terms and conditions of the Sales Agreement, the Agents
 may sell the Placement Shares by any method permitted by law deemed to be an "at the market" offering as defined in Rule 415 of the Securities Act of 1933, as amended, including, without limitation, sales made through The Nasdaq Capital
 Market or on any other existing trading market for the Company's common stock. The Agents will use commercially reasonable efforts to sell the Placement Shares from time to time, based upon the Company's instructions (including any price,
 time or size limits or other customary parameters or conditions the Company may impose). The Company will pay the Agents a commission equal to three percent ( 3 %) of the gross sales proceeds of any Placement Shares sold through the Agents under the Sales Agreement, and the Company has also provided the Agents with customary indemnification and contribution
 rights. The Company is not obligated to make any sales of its common stock under the Sales Agreement. The offering of Placement Shares pursuant to the Sales Agreement will terminate upon the earlier of (i) the sale of all Placement Shares
 subject to the Sales Agreement or (ii) termination of the Sales Agreement in accordance with its terms. For the year ended December 31, 2023, the Company sold 2,642,269 shares of common stock for a net value of $ 16.1 million pursuant to the Sales
 Agreement. For the year ended December 31, 2022, the Company sold 1,238,491 shares of our common stock for a net value of $ 9.9 million pursuant to the Sales Agreement. As of the date of this Annual Report, in the first quarter of 2024, the Company sold 3,428,681 shares of common stock for a net value of $ 19.5 million pursuant to the Sales Agreement.

 In August 2022, the Company entered into a venture loan and security agreement, or the Loan and Security Agreement, with Horizon
 Technology Finance Corporation, as lender and collateral agent for itself and the other lenders. The Loan and Security Agreement provides for the following 6 separate and independent term loans: (a) a term loan in the amount of $ 7,500,000, or Loan A, (b)
 a term loan in the amount of $ 10,000,000, or Loan B, (c) a term loan in the amount of $ 3,750,000, or Loan C, (d) a term loan in the amount of $ 3,750,000,
 or Loan D, (e) a term loan in the amount of $ 5,000,000, or Loan E, and (f) a term loan in the amount of $ 5,000,000, or Loan F, (with each of Loan A, Loan B, Loan C, Loan D, Loan E, and Loan F (individually a Loan and collectively the Loans). Loan A,
 Loan B, Loan C, and Loan D were delivered to the Company on August 24, 2022. In total, the Company received $ 24.6 million in net
 proceeds Loan E and Loan F were uncommitted Loans that could have been advanced by the lenders upon the parties agreement prior to July 31, 2023 upon the satisfaction of certain conditions. At this time the option to advance Loan E and Loan F
 has expired and Loan E and Loan F are no longer available to the Company under the Loan and Security Agreement. The Company may only use the proceeds of the Loans for working capital or general corporate purposes. Each Loan matures on the 48 -month anniversary following the applicable funding date unless accelerated pursuant to certain events of default. Payments on the principal
 balance begin on October 1, 2024 and are paid monthly in the succeeding 24 months. The principal balance of each Loan bears a
 floating interest. The interest rate is calculated initially and, thereafter, each calendar month as the sum of (a) the per annum rate of interest from time to time published in The Wall Street Journal as contemplated by the Loan and Security
 Agreement, or any successor publication thereto, as the "prime rate" then in effect, plus (b) 5.75 %; provided that, in the event
 such rate of interest is less than 4.00 %, such rate shall be deemed to be 4.00 % for purposes of calculating the interest rate. Interest is payable on a monthly basis based on each Loan principal amount outstanding the preceding month. The
 Company, at its option upon at least ten ( 10) business days' written notice to the lenders, may prepay all (and not less than all) of
 the outstanding Loan by simultaneously paying to each lender an amount equal to (i) any accrued and unpaid interest on the outstanding principal balance of the Loans; plus (ii) an amount equal to (A) if such Loan is prepaid on or before the
 Loan Amortization Date (as defined in the Loan and Security Agreement) applicable to such Loan, 3 % of the then outstanding principal
 balance of such Loan, (B) if such Loan is prepaid after the Loan Amortization Date applicable to such Loan, but on or before the date that is 12 months after such Loan Amortization Date, 2 % of the then outstanding principal balance of such Loan, or (C) if
 such Loan is prepaid more than 12 months after the Loan Amortization Date but prior to the stated maturity date applicable to such
 Loan, 1 % of the then outstanding principal balance of such Loan; plus (iii) the outstanding principal balance of such Loan; plus
 (iv) all other sums, if any, that shall have become due and payable thereunder. No prepayment premium will be applied to any
 outstanding balance of any Loan paid on the stated maturity date.

 The Loan and Security Agreement contains customary representations, warranties and covenants, including maintenance of
 minimum cash balances as well as covenants by the Company limiting additional indebtedness, liens, including on intellectual property, guaranties, mergers and consolidations, substantial asset sales, investments and loans, certain corporate
 changes, transactions with affiliates and fundamental changes.

 In April 2023, the Company received approximately $ 1.4
 million from the net sale of tax benefits to an unrelated, profitable New Jersey corporation pursuant to the Company's participation in the New Jersey Technology Business Tax Certificate Transfer NOL program for tax year 2021.

 Going Concern

 The Company evaluated whether there are any conditions and events, considered in the aggregate, that raise substantial
 doubt about its ability to continue as a going concern within one year after the filing of this Annual Report on Form 10-K in accordance with ASC Subtopic 205-40, Going Concern. Since inception, the Company has experienced net losses and
 negative cash flows from operations each fiscal year. The Company has no revenues and expects to continue to incur operating losses for the foreseeable future and may never become profitable. In addition, the Loan and Security Agreement
 allows for the lenders to call the outstanding balance of the term loans if the minimum cash balances outlined in the Loan and Security Agreement are not maintained.

 The Company's budgeted cash requirements in 2024 and beyond include expenses related to continuin g development and clinical trials as well as payments on our debt. The Company plans to execute its operating plan by obtaining additional capital,
 principally through entering into collaborations, strategic alliances, or license agreements with third parties and/or additional public or private debt and equity financing. However, ther e is no assurance that additional capital
 and/or financing will be available to the Company, and even if available, whether it will be on terms acceptable to the Company or its existing shareholders or in the amounts required. The Company may also enter into government funding
 programs and consider selectively partnering for clinical development and commercialization. The sale of additional equity would result in additional dilution to the Company's stockholders. Incurring debt financing would result in debt
 service obligations, and the instruments governing such debt could provide for operating and financing covenants that would restrict its operations. If the Company is unsuccessful in securing sufficient financing, it may need to delay,
 reduce, or eliminate its research and development programs, which could adversely affect its business prospects, grant rights to third parties to develop and market immunotherapies that the Company would otherwise prefer to develop and
 market itself or cease operations. Any of these actions could harm its business, results of operations and prospects. Failure to obtain adequate financing also may adversely affect the Company's ability to operate as a going concern.

 As a result of these uncertainties, and as its plans are outside of management's control, the Company has concluded that
 substantial doubt exists about the Company's ability to continue as a going concern for a period of at least 12 months from the date of the issuance of these audited consolidated financial statements. The audited consolidated financial
 statements do not include any adjustments to the carrying amounts and classifications of assets and liabilities that would result if the Company was unable to continue as a going concern.

 Note 4 – Fair Value of Financial Instruments

 There were no
 transfers between Levels 1, 2, or 3 during the years ended December 31, 2023 or 2022.

 Fair Value Measurements at Reporting Date Using

 Total

 Quoted Prices in

 Active Markets

 (Level 1)

 Quoted Prices in

 Inactive Markets

 (Level 2)

 Significant

 Unobservable Inputs

 (Level 3)

 As of December 31, 2023:

 Cash and cash equivalents

 $

 56,560,517

 $

 56,560,517

 $

 –

 $

 –

 As of December 31, 2022:

 Cash and cash equivalents

 $

 $

 $

 –

 $

 –

 The carrying value of the Loan and Security Agreement approximated its fair value at December 31, 2023 due to its variable rate. The fair value of the Company ' s long-term debt is based on Level 2 inputs.

 Note 5 – Property and Equipment

 Property and equipment is summarized as follows:

 2023

 2022

 Furniture and equipment

 $

 14,964

 $

 14,964

 Computer and Telephone equipment

 13,545

 13,545

 Lab equipment

 238,402

 86,911

 Total furniture and equipment

 266,911

 115,420

 Less accumulated depreciation

 ( 132,779

)

 ( 115,420

)

 Property and equipment, net

 $

 134,132

 $

 Depreciation expense for the years ended December 31, 2023 and 2022 was $ 17,359 and $ 86, respectively.

 Note 6 – Leases

 Operating Lease

 Effective March 5, 2020, the Company entered into a sublease for approximately 11,200 square feet of office space located at 25B Vreeland Road, Suite 300, Florham Park, NJ. The sublease commenced on May 1, 2020 and will continue for a term of forty ( 40) months with an option to renew through October 31, 2027. The

 sublease term expired on August 31, 2023, and was not renewed. Upon inception of the sublease, the Company recognized approximately $ 0.7
 million of ROU assets and operating lease liabilities. The discount rate used to measure the operating lease liability as of May 1, 2020 was 9.15 %.
 Throughout the period described above, the Company has maintained, and continues to maintain, a month-to-month lease for its research facilities at the Princeton Innovation Center BioLabs located at 303A College Road E, Princeton NJ, 08540.

 Supplemental cash flow information related to operating leases is as follows:

 2023

 2022

 Cash paid for operating lease liabilities

 $

 239,469

 $

 294,987

 Financing Lease

 The Company has financed certain
 laboratory equipment as follows:

 2023

 2022

 Cash paid for finance lease liabilities

 $

 78,146

 $

 423,880

 Maturity of the Company's
 financing lease liabilities is as follows:

 Year ended December 31,

 2024

 $

 69,850

 2025

 69,850

 2026

 40,108

 2027

 26,721

 2028 and after

 Total future minimum lease payments

 206,530

 Less imputed interest

 ( 27,763

)

 Remaining lease liability

 $

 178,767

 The Company entered into four financing leases for laboratory equipment with a total cost of $ 251,959 with four to five-year terms and a capitalized interest rate of 9.15 %.
 Each of the lease agreements include a bargain purchase option to acquire the equipment at the end of the lease term. The aggregate monthly payments are approximately $ 6,000. During the year ended December 31, 2023, the Company exercised a bargain purchase option, which resulted in recognition of property and equipment of $ 151,490.

 Finance lease amortization expense for the years ended December 31, 2023 and 2022 was $ 39,967 and $ 48,992, respectively.

 Note 7 – Accrued Expenses

 Accrued expenses consist of the following:

 2023

 2022

 Accrued research and development costs

 $

 –

 $

 5,645,737

 Accrued professional fees

 827,863

 550,259

 Accrued compensation

 1,289,690

 1,837,330

 Accrued interest on debt

 306,771

 280,382

 Accrued rent

 –

 Total

 $

 2,424,692

 $

 8,313,708

 Note 8 – Stock-Based Compensation

 In 2014, the
 Company's stockholders approved the 2014 Equity Incentive Plan (the "Original Plan") pursuant to which the Company may grant up to 91,367
 shares as ISOs, NQs and restricted stock units ("RSUs"), subject to increases as hereafter described (the "Plan Limit"). In addition, on January 1, 2015, and each January 1 thereafter and prior to the termination of the 2014 Equity
 Incentive Plan, pursuant to the terms of the Original Plan, the Plan Limit was and shall be increased by the lesser of (x) 4 %
 of the number of shares of Common Stock outstanding as of the immediately preceding December 31 and (y) such lesser number as the Board of Directors may determine in its discretion. In March 2019, the Board adopted and the Company's
 stockholders approved the Amended and Restated PDS Biotechnology Corporation 2014 Equity Incentive Plan (the "Prior Plan") which amended and restated the Original Plan in order to remove the annual increase component and was limited to 826,292 shares.

 On December 8, 2020, the Board adopted and on
 June 17, 2021, the stockholders approved, the Second Amended and Restated PDS Biotechnology Corporation 2014 Equity Incentive Plan (the "Restated Plan"), which amended and restated the Prior Plan. The Restated Plan is identical to the
 Prior Plan in all material respects, except (a) the number of shares of Common Stock authorized for issuance under the Restated Plan was increased from 826,292 shares to 4,165,535 shares, plus the total number of shares
 that remained available for issuance, that were not covered by outstanding awards issued under the Prior Plan, immediately prior to December 8, 2020; and (b) the Restated Plan was amended to terminate on December 7, 2030, unless earlier
 terminated. On July 14, 2023, the Company's stockholders approved an amendment to the Restated Plan, increasing the number
 of shares of common stock for issuance from 4,165,535 to 6,565,535 shares. As of December 31, 2023, there were 3,051,449 shares available for grant under the Restated Plan.

 In 2018, the Company's stockholders approved the 2018 Stock Incentive Plan pursuant to which the Company may grant up to 558,071 shares as (i) Stock Options, (ii) Stock Appreciation Rights, (iii) Restricted Stock, (iv) Preferred Stock, (v) Stock Reload Options and/or
 (vi) Other Stock-Based Awards. As of December 31, 2023, there were 190,799 shares available for grant under the 2018 Stock
 Incentive Plan.

 Pursuant to the terms of the Plans, ISOs have a term of ten years from the date of grant or such shorter term as may be provided in the option agreement. Unless specified otherwise in an individual option agreement, ISOs generally vest over a four-year period. Unless terminated by the Board, the Plans shall continue to remain effective for a term of ten years or until such time as no further awards may be granted and all awards granted under the Plans are no longer outstanding.

 On June 17, 2019, the Board adopted the 2019 Inducement Plan (the "Inducement
 Plan"). On December 8, 2020, the Company amended the Inducement Plan solely to increase the total number of shares of common stock reserved for issuance under the Inducement Plan from 200,000 shares to 500,000
 shares. On May 17, 2022, the Company further amended the Inducement Plan solely to increase the total number of shares of Common Stock reserved for issuance under the Inducement Plan from 500,000 shares to 1,100,000 shares. On January 22, 2024,
 the Company further amended the Inducement Plan solely to increase the total number of shares of Common Stock reserved for issuance under the Inducement Plan from 1,100,000 shares to 2,100,000 shares. The Inducement Plan provides for the grant of non-qualified stock options. The Inducement Plan, and each amendment thereto, was recommended for approval by the Compensation Committee of the Board and subsequently approved
 and adopted by the Board without stockholder approval pursuant to Rule 5635(c)(4) of the Nasdaq Listing Rules.

 The Inducement Plan is administered by the Compensation Committee of the Board. In accordance with Rule
 5635(c)(4) of the Nasdaq Listing Rules, non-qualified stock options under the Inducement Plan may only be made to an employee who has not previously been an employee of the Company or member of the Board of Directors of the Company (or any
 parent or subsidiary of the Company)), if he or she is granted such non-qualified stock options in connection with his or her commencement of employment with the Company or a subsidiary and such grant is an inducement material to his or her
 entering into employment with the Company or such subsidiary. As of December 31, 2023, there were 112,010 shares available for
 grant under the Inducement Plan.

 The following table summarizes the components of stock-based compensation expense in the consolidated statements of operations
 and comprehensive loss for the years ended December 31, 2023 and 2022:

 2023

 2022

 Research and development

 $

 3,013,326

 $

 1,868,352

 General and administrative

 4,600,995

 3,327,804

 Total

 $

 7,614,321

 $

 5,196,156

 The following table summarizes the stock option activity for the Company' stock option plans for the year ended December 31, 2023:

 Number

 of Shares

 Weighted

 Average

 Exercise Price

 Weighted

 Average

 Remaining

 Contractual

 Life in Years

 Aggregate

 Intrinsic Value

 Balance at January 1, 2023

 4,171,311

 $

 5.56

 7.89

 32,779,920

 Granted

 1,414,000

 $

 10.31

 9.18

 Exercised

 ( 81,935

)

 $

 3.77

 –

 –

 Forfeited

 ( 456,405

)

 $

 10.64

 –

 –

 Expired

 ( 17,626

)

 16.17

 Options outstanding at December 31, 2023

 5,029,345

 $

 6.43

 7.42

 $

 4,395,227

 Vested and expected to vest at December 31, 2023

 5,029,345

 $

 6.43

 7.42

 $

 4,395,227

 Exercisable at December 31, 2023

 2,829,330

 $

 5.60

 6.53

 $

 3,315,101

 As of December 31, 2023 there was approximately $ 13,950,484 of unamortized stock compensation expense, which is expected to be recognized over a remaining average vesting period of 2.47 years.

 The Company entered into an agreement with DC Consulting for certain consulting services and issued 200,000 shares in connection with the agreement.

 The weighted-average grant date fair value of the stock options granted in 2023 was $ 9.59 per share.

 The fair value of options granted during the year ended December 31, 2023 and 2022 were estimated using the Black-Scholes option
 valuation model utilizing the following assumptions:

 2023

 2022

 Weighted Average

 Volatility

 142.84

 %

 99.63

 %

 Risk-Free Interest Rate

 4.14

 %

 1.79

 %

 Expected Term in Years

 6.06

 6.39

 Dividend Rate

 –

 –

 Fair Value of Option on Grant Date

 $

 9.59

 $

 4.40

 Expected volatility. The expected volatility assumption was changed on January 1,
 2023 from using volatilities of a peer group of similar companies in the biotechnology industry whose share prices were publicly available, to using the volatility of the Company's historical share price performance over the contractual term
 of the options.

 Risk-free interest rate. The risk-free interest rate assumption is based on observed
 interest rates appropriate for the expected term of the stock option grants.

 Expected term. The expected term represents the period options are expected to be
 outstanding. The expected term of the options is based on using the simplified method, which is the midpoint between the requisite service period and the contractual term of the option, since the Company has a limited history of being a
 public company to develop reasonable expectations about future exercise patterns and employment duration for the stock options grants.

 Expected dividend rate. The expected dividend yield assumption is based on the fact
 that the Company has never paid cash dividends and has no present intention to pay cash dividends.

 Note 9 – Stockholders' Equity

 Preferred Stock

 The Company currently has 5,000,000
 shares of preferred stock authorized.

 Voting

 Shares of preferred stock may be issued in one or more series, from time to time, with each such series to consist of such
 number of shares and to have such voting powers relative to other classes or series of preferred stock, if any, or common stock, full or limited or no voting powers, and such designations, preferences and relative, participating, optional or
 other special rights, and such qualifications, limitations or restrictions thereof, as shall be stated in the resolution or resolutions providing for the issuance of such series adopted by the Company's Board of Directors.

 Common Stock

 The Company currently has 75,000,000
 shares of common authorized.

 Voting

 Each holder of a share of common stock is entitled to one vote for each share of common stock.

 Dividends

 Dividends may be declared and paid as and when determined by the Board of Directors and subject to any preferential dividend
 rights of any then outstanding preferred stock.

 Preemptive Rights.

 The holders of common stock shall have no preemptive rights to subscribe for any shares of any class of stock of the Company
 whether now or hereafter authorized.

 Liquidation Rights

 Upon the dissolution or liquidation of the Company, whether voluntary or involuntary, holders of the common stock will be
 entitled to receive all assets of the Company available for distribution to its stockholders, subject to any preferential rights of any then outstanding preferred stock.

 Note 10 – Income Taxes

 A reconciliation of the statutory U.S. federal income tax rate to the Company's effective tax rate is as follows:

 2023

 2022

 Federal statutory rate

 21.0

 %

 21.0

 %

 State taxes

 7.9

 %

 4.8

 %

 Extraordinary gain

 0.0

 %

 0.0

 %

 Permanent differences

 ( 0.9

)%

 ( 0.4

)%

 Research and development

 4.1

 %

 2.9

 %

 State Taxes/Sale of NOL

 3.2

 %

 2.9

 %

 Valuation Allowance

 ( 32.1

)%

 ( 28.3

)%

 Other

 0.0

 %

 0.0

 %

 Effective tax rate

 3.2

 %

 2.9

 %

 The tax effects of temporary differences that give rise to significant portions of the deferred tax assets were as follows:

 2023

 2022

 Federal net operating losses

 $

 28,599,086

 $

 25,063,210

 State net operating losses

 4,648,978

 3,166,596

 Stock options

 4,668,417

 2,696,879

 Federal tax credit

 4,730,921

 2,893,412

 State tax credits

 582,605

 511,557

 Research and Development Capitalization (IRC 174)

 10,017,958

 4,506,729

 License Agreement

 2,639,961

 2,811,000

 Amortization

 23,131

 29,463

 Accrued expense

 –

 Depreciation

 725,305

 732,064

 Lease liabilities

 50,564

 127,278

 Other

 15,374

 15,278

 Total gross deferred tax assets

 56,702,404

 42,553,261

 Less valuation allowance

 ( 56,645,587

)

 ( 42,404,971

)

 Deferred tax assets, net

 $

 56,817

 $

 148,290

 Right of use asset

 $

 ( 56,817

)

 $

 ( 148,290

)

 Total gross deferred tax liabilities

 ( 56,817

)

 ( 148,290

)

 Deferred tax, net

 $

 –

 $

 –

 In assessing the realizability of the net deferred tax assets, the Company considers all relevant positive and negative
 evidence to determine whether it is more likely than not that some portion of the deferred income tax will not be realized. The realization of the gross deferred tax assets is dependent on several factors, including the generation of
 sufficient taxable income prior to the expiration of the net operating loss carryforwards. At December 31, 2023 and 2022, the Company has recorded a full valuation allowance against its net deferred tax assets of approximately $ 56.6 and $ 42.4 million,
 respectively. The change in the valuation allowance during the year ended 2023 was approximately $ 14.2 million.

 The Tax Cuts and Jobs Act of 2017 (TCJA) has modified the IRC 174 expenses related to research and development for the tax years beginning after December 31, 2021. Under the TCJA, the Company must now capitalize the expenditures
 related to research and development activities and amortize over five years for U.S. activities and 15 years for non-U.S. activities using a mid-year convention. Therefore, the capitalization of research and development costs in accordance
 with IRC 174 resulted in a deferred tax asset of $ 10.0 million and $ 4.5 million as of December 31, 2023 and 2022, respectively.

 At December 31, 2023, the Company had federal net operating loss ("NOL") carryforwards of approximately $ 136.2 million. At December 31, 2023, the Company had federal research and development credit carryforwards of approximately $ 4.7 million. The federal net operating loss carryforwards begin to
 expire in 2028, losses generated in 2018 or later of $ 106.2 million will carry forward indefinitely. The federal credit
 carryforwards begin to expire in 2032. Section 382 and 383 of the Internal Revenue Code of 1986 subject the future utilization
 of net operating losses and certain other tax attributes, such as research and experimental tax credits, to an annual limitation in the event certain ownership changes, as defined. The Company may be subject to the net operating loss
 utilization provisions of Section 382 of the Internal Revenue Code. The effect of an ownership change would be the imposition of an annual limitation on the use of NOL carryforwards attributable to periods before the change. The amount of
 the annual limitation depends upon the value of the Company immediately before the change, changes to the Company's capital during a specified period prior to the change, and the federal published interest rate. Although the Company has
 not completed an analysis under Section 382 of the Code, it is likely that the utilization of the NOLs will be limited.

 At December 31, 2023, the Company had approximately $ 65.5 million of State of New Jersey NOLs which expire between 2029
 and 2043. At December 31, 2023, the Company had approximately $ 0.7 million of the State of New Jersey research development credits carryforwards. The State of New Jersey has enacted legislation permitting certain corporations
 located in New Jersey to sell state tax loss carryforwards and state research and development credits, or net loss carryforwards. The Technology Business Tax Certificate Transfer Program enables qualified, unprofitable NJ-based technology or
 biotechnology companies with fewer than 225 US employees (including the parent company and all subsidiaries) to sell a percentage of New Jersey NOLs and research and development ("R&D") tax credits to unrelated profitable corporations. In 2023, the Company sold
 New Jersey NOL carryforwards and R&D Credits, resulting in the recognition of $ 1.4 million of income tax benefit, net of
 transaction costs. There is no certainty as to whether this program will continue.

 Entities are also required to evaluate, measure, recognize and disclose any uncertain income tax provisions taken on their
 income tax returns. The Company has analyzed its tax positions and has concluded that as of December 31, 2023, there were no
 uncertain positions. The Company's U.S. federal and state net operating losses have occurred since its inception in 2009 and as such, tax years subject to potential tax examination could apply from that date because the utilization of net
 operating losses from prior years opens the relevant year to audit by the IRS and/or state taxing authorities. Interest and penalties, if any, as they relate to income taxes assessed, are included in the income tax provision. The Company did
 no t have any unrecognized tax benefits and has no t accrued any interest or penalties for the years ended December 31, 2023 and 2022.

 Note 11 – Commitments and Contingencies

 Rent

 For the years ended December 31, 2023 and 2022, rent was $ 264,000 and $ 232,500, respectively, for month-to-month
 arrangements not impacted by the adoption of ASC 842.

 Exclusive License Agreement

 Pursuant to the Merck KGaA License Agreement, we agreed to make (i) development and first commercial sales milestone payments
 totaling up to $ 11 million upon the achievement of certain milestones, including the dosing of the fifth patient in a Phase3 trial
 of the clinical candidate and first commercial sale of the product for a first and second indication in a major market, and (ii) up to $ 105
 million upon achieving certain aggregate sales levels of the product.

 We also agreed to pay Merck KGaA, Darmstadt, Germany a royalty of 10 % on aggregate net sales of product as specified in the Merck KGaA License Agreement on a product-by-product and country-by-country basis until the later of: (i) ten years after the first commercial sale of a product in a given country; and (ii) the expiration or invalidation of the licensed patents
 covering the compound or product in such country. The royalty rate is subject to reduction in that event that a product is not covered by a valid patent claim, a biosimilar to the compound or the product comes on the market in a particular
 country, or if we obtain a license to any intellectual property owned or controlled by a third-party which but for such license would be infringed by making, using or selling the compound.

 Legal Proceedings

 The Company may be involved, from time to time, in legal proceedings and claims arising in the ordinary course of its
 business. Such matters are subject to many uncertainties and outcomes are not predictable with assurance. While there can be no assurances as to the ultimate outcome of any legal proceeding or other loss contingency involving the Company,
 management does not believe any pending matter will be resolved in a manner that would have a material adverse effect on its financial position, results of operations or cash flows.

 Note 12 – Venture Loan and Security Agreement

 In August 2022, the Company entered into a Venture loan and security agreement (the "Loan and Security Agreement") with Horizon
 Technology Finance Corporation, as a lender and collateral agent for itself and the other Lenders (in such capacity, the "Collateral Agent"), and the other persons party thereto from time to time as lenders ("Lenders").

 Term loan Amounts.
 The Loan and Security Agreement provides for the following six ( 6) separate and independent term loans: (a) a term loan in the amount of $ 7,500,000
 ("Loan A"), (b) a term loan in the amount of $ 10,000,000 ("Loan B"), (c) a term loan in the amount of $ 3,750,000 ("Loan C"), (d) a term loan in the amount of $ 3,750,000
 ("Loan D"), (e) a term loan in the amount of $ 5,000,000 ("Loan E"), and (f) a term loan in the amount of $ 5,000,000 ("Loan F") (with each of Loan A, Loan B, Loan C, Loan D, Loan E, and Loan F, individually a "Loan" and, collectively, the "Loans"). Loan
 A, Loan B, Loan C, and Loan D were delivered to the Company on August 24, 2022. Loan E and Loan F were uncommitted Loans that could have been advanced by the lenders upon the parties agreement prior to July 31, 2023 upon the satisfaction of
 certain conditions. At this time the option to advance Loan E and Loan F has expired and Loan E and Loan F are no longer available to the Company under the Loan and Security Agreement. The Company may only use the proceeds of the Loans for
 working capital or general corporate purposes.

 Maturity. Each Loan matures on the 48-month anniversary following the applicable date on which a Loan is made to or on account of the Company under the Loan and Security Agreement (the "Maturity Date") unless accelerated
 pursuant to agreed upon events of default. All amounts outstanding under each Loan will be due and payable upon the earlier of the Maturity Date or the acceleration of the loans and commitments upon an event of default. Payments on the principal
 balance begin on October 1, 2024 and are paid monthly in the succeeding 24 months.

 Interest Rate. The
 principal balance of each Loan bears a floating interest. The interest rate is calculated initially and, thereafter, each calendar month as the sum of (a) the per annum rate of interest from time to time published in The Wall Street Journal as
 contemplated by the Loan and Security Agreement, or any successor publication thereto, as the "prime rate" then in effect, plus (b) 5.75 %;
 provided that, in the event such rate of interest is less than 4.00 %, such rate shall be deemed to be 4.00 % for purposes of calculating the interest rate. Interest is payable on a monthly basis based on each Loan principal amount outstanding the
 preceding month.

 Amortization. Each
 Loan shall commence amortization upon the date set forth on the promissory note executed in connection with the respective Loan, upon which the Company is required to commence making equal payments of principal plus accrued interest on the
 outstanding principal amount of the respect Loan (the "Loan Amortization Date") and continuing thereafter on the first business day of each calendar month through the Maturity Date.

 Prepayment Premium. The

 Company may, at its option upon at least ten ( 10) business days' written notice to the Lenders, prepay all (and not less than all) of
 the outstanding Loan by simultaneously paying to each Lender an amount equal to (i) any accrued and unpaid interest on the outstanding principal balance of the Loans; plus (ii) an amount equal to (A) if such Loan is prepaid on or before the
 Loan Amortization Date applicable to such Loan, three percent ( 3 %) of the then outstanding principal balance of such Loan, (B) if such Loan is prepaid after the Loan Amortization Date applicable to such Loan, but on or before the date that is twelve
 ( 12) months after such Loan Amortization Date, two percent ( 2 %) of the then outstanding principal balance of such Loan, or
 (C) if such Loan is prepaid more than twelve ( 12) months after the Loan Amortization Date but prior to the stated Maturity Date
 applicable to such Loan, one percent ( 1 %)
 of the then outstanding principal balance of such Loan; plus (iii) the outstanding principal balance of such Loan; plus (iv) all other sums, if any, that shall
 have become due and payable hereunder. No prepayment premium will be applied to any outstanding balance of any Loan paid on the
 stated Maturity Date.

 Security. The
 Company's obligations are secured by a security interest in all of the assets of the Company, subject to limited exceptions and excluding the Company's intellectual property.

 Covenants; Representations and Warranties; Other Provisions. The Loan and Security Agreement contains customary representations, warranties and covenants, including maintenance of minimum cash balances as well as covenants by the Company limiting additional
 indebtedness, liens, including on intellectual property, guaranties, mergers and consolidations, substantial asset sales, investments and loans, certain corporate changes, transactions with affiliates and fundamental changes. As of December 31,
 2023, the Company is in compliance with all covenants.

 Default Provisions.
 The Loan and Security Agreement provides for events of default customary for term loans of this type, including but not limited to non-payment, breaches or defaults in the performance of covenants, insolvency, and bankruptcy by and/or of the
 Company.

 Warrant and Debt Discount. In connection with the Loan and Security Agreement, the Company issued Horizon Technology Finance Corporation and Powerscourt Investments XXV, LP warrants to purchase an aggregate total of 381,625 shares of the Company's common stock at an initial exercise price of $ 3.6685
 per share. Each warrant is classified as equity and is exercisable at any time for a period beginning on the date of grant and ending on the earlier of (A) 10 years from the date of grant, and (B) the closing of (A) (i) the sale, lease, exchange, conveyance or other disposition of all or substantially all of the Company's property or
 business, or (ii) its merger into or consolidation with any other corporation (other than a wholly-owned subsidiary of the Company), or any transaction (including a merger or other reorganization) or series of related transactions, in which
 more than 50 % of the voting power of the Company is disposed of, in each case, for cash or for marketable securities meeting certain
 requirements as described in the applicable warrants. The key assumptions used in Black-Scholes option pricing model were (i) expected term of 10 years, (ii) a risk-free rate of 3.11 %, (iii) expected volatility of 93.8 %, (iv) and no estimated dividend yield. In addition,
 the Company incurred third-party and lender fees of $ 449,329. These proceeds were allocated on a basis that approximates the relative
 fair value method. The fair value of the warrant and fees incurred were recorded as a debt discount and are being recognized as interest expense over the life of the Loan and Security Agreement using the effective interest method. The
 unamortized debt discount was $ 2,264,650 as of December 31, 2023.

 For the year ended December 31, 2023 and 2022 the Company recognized interest expense of $ 4,187,075 and $ 1,288,776,
 respectively, of which $ 652,006 and $ 183,914,
 respectively was related to the amortization of the debt discount for each of the years.

 Note 13 – Retirement Plan

 The Company has a 401(k) defined contribution plan for the benefit for all employees and permits voluntary contributions by
 employees subject to IRS-imposed limitations.

 The 401(k) employer cash contribution match for the years ended December 31, 2023 and December 31, 2022 $ 181,439 and $ 157,009, respectively.

 Note 14 – Subsequent Events

 On January 22, 2024, the Company amended the Inducement Plan solely to increase the total number of shares of common stock reserved for issuance under the Inducement
 Plan from 1,100,000 shares to 2,100,000
 shares.

 As of the date of this Annual Report,in the first quarter of 2024, the Company sold 3,428,681 shares of common stock for net proceeds of $ 19.5 million pursuant to its Sales Agreement.