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 UNITED STATES

 SECURITIES AND EXCHANGE COMMISSION

 Washington, D.C. 20549

 FORM 10-K

 (Mark One)

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

 For the fiscal year ended December 31, 2024

 OR

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

 FOR THE TRANSITION PERIOD FROM TO

 Advent Technologies Holdings, Inc.

 (Exact name of Registrant as specified in its Charter)

 Delaware

 001-38742

 83-0982969

 (State or other jurisdiction
 of incorporation)

 (Commission
 File Number)

 (IRS Employer
 Identification No.)

 5637 La Ribera St. Suite A Livermore, CA 94550

 (Address of principal executive offices) (Zip Code)

 Registrant's telephone number, including area code: ( 925) 455-9400

 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 $0.0001 per share

 ADN

 The Nasdaq Capital Market

 Warrants to purchase one share of common stock, each at an exercise price of $345.00

 ADNWW

 The Nasdaq Capital Market

 Securities registered pursuant to Section 12(g) 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 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 (§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, 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.

 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 Registrant's shares of common stock outstanding, other than shares held by persons who may be deemed affiliates of the Registrant, at June 30, 2024, was approximately $ 6.7 million.

 As of June 2, 2025, the registrant had 2,670,286 shares of common stock, par value $0.0001 per share, issued and outstanding. The foregoing reflects the reverse stock split of the registrant's common stock that became effective on May 13, 2024 and began trading on a post-split adjusted basis on May 14, 2024.

 DOCUMENTS INCORPORATED BY REFERENCE

 None.

 Page

 Item 1.

 Business

 Item 1A.

 Risk Factors

 Item 1B.

 Unresolved Staff Comments

 Item 1C.

 Cybersecurity

 Item 2.

 Properties

 Item 3.

 Legal Proceedings

 Item 4.

 Mine Safety Disclosures

 Item 5.

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

 Item 6.

 Selected Financial Data

 Item 7.

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

 Item 7A.

 Quantitative and Qualitative Disclosures About Market Risk

 Item 8.

 Financial Statements and Supplementary Data

 Item 9.

 Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

 Item 9A.

 Controls and Procedures (Amended)

 Item 9B.

 Other Information

 Item 9C.

 Disclosure Regarding Foreign Jurisdictions that Prevent Inspections.

 Item 10.

 Directors, Executive Officers and Corporate Governance

 Item 11.

 Executive Compensation

 Item 12.

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

 Item 13.

 Certain Relationships and Related Transactions, and Director Independence

 Item 14.

 Principal Accounting Fees and Services

 Item 15.

 Exhibits, Financial Statement Schedules

 Item 16

 Form 10-K Summary

 Signatures

 i

 FORWARD-LOOKING STATEMENTS

 This Annual Report on Form 10-K and the information incorporated herein by reference may constitute "forward-looking statements", which reflect our current views with respect to, among other things, our operations and financial performance. All statements other than statements of historical facts contained in this Annual Report on Form 10-K, including statements regarding our future results of operations and financial position, business strategy and plans and our objectives for future operations, are forward-looking statements. The words "believe," "may," "will," "estimate," "continue," "anticipate," "intend," "expect," "should," "could," "target," "predict," "seek" and similar expressions are intended to identify forward-looking statements. We have based these forward-looking statements largely on our current expectations and projections about future events and financial trends that we believe may affect our financial condition, results of operations, business strategy, short- and long-term business operations and objectives, and financial needs. These forward-looking statements are subject to a number of risks, uncertainties and assumptions, including those described in "Item 1.A Risk Factors" in this Annual Report on Form 10-K. Moreover, we operate in a very competitive and rapidly changing environment and new risks emerge from time to time. It is not possible for our management to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we may make. In light of these risks, uncertainties and assumptions, the forward-looking events and circumstances discussed in this Annual Report on Form 10-K may not occur and actual results could differ materially and adversely from those anticipated or implied in the forward-looking statements.

 Some of the key factors that could cause actual results to differ from our expectations include:

 our ability to maintain the listing of our shares of common stock and warrants on Nasdaq;

 our ability to raise financing in the future;

 our success in retaining or recruiting officers, key employees or directors;

 factors relating to our business, operations and financial performance, including:

 our ability to control the costs associated with our operations;

 our ability to grow and manage growth profitably;

 our reliance on complex machinery for our operations and production;

 the market's willingness to adopt our technology;

 our ability to maintain relationships with customers;

 the potential impact of product recalls;

 our ability to compete within our industry;

 increases in costs, disruption of supply or shortage of raw materials;

 the impact of unfavorable changes in U.S. and international regulations;

 the availability of and our ability to meet the terms and conditions for government grants and economic incentives; and

 our ability to protect our intellectual property rights.

 ii

 the regulatory environment in which our business operates under;

 trends in the industries in which our business operates;

 the competitive environment in which our business operates;

 changes in general economic or business conditions or economic or demographic trends in the United States, and globally, including changes in interest rates and inflation;

 casualties, condemnation or catastrophic failures with respect to any of our business' facilities;

 costs and effects of legal and administrative proceedings, settlements, investigations and claims;

 extraordinary or force majeure events affecting the business or operations of our businesses; and

 other factors detailed herein under the section entitled "Risk Factors."

 The forward-looking statements included in this Annual Report on Form 10-K are made only as of the date of this Annual Report. You should not rely upon forward-looking statements as predictions of future events. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee that the future results, levels of activity, performance or events and circumstances reflected in the forward-looking statements will be achieved or occur. Moreover, neither we nor any other person assumes responsibility for the accuracy and completeness of the forward-looking statements. We undertake no obligation to update publicly any forward-looking statements for any reason after the date of this Annual Report on Form 10-K to conform these statements to actual results or to changes in our expectations.

 As a result of a number of known and unknown risks and uncertainties, our actual results or performance may be materially different from those expressed or implied by these forward-looking statements. For a discussion of the risks involved in our business and investing in our common stock, see the section entitled "Risk Factors."

 Should one or more of these risks or uncertainties materialize, or should any of the underlying assumptions prove incorrect, actual results may vary in material respects from those expressed or implied by these forward-looking statements. You should not place undue reliance on these forward-looking statements.

 iii

 References in this annual report to "we," "us," "Advent," "company," or "our company" are to Advent Technologies Holdings, Inc., a Delaware corporation, and its consolidated subsidiaries. References to "management" or our "management team" are to our officers and directors.

 Item 1.

 Business.

 Overview

 We are an advanced materials and technology development company operating in the fuel cell and hydrogen technology space, including liquid hydrogen carriers such as methanol. We are a world-leading company in the development of HT-PEM (High Temperature Proton Exchange Membrane) technology (with approximately 150 patents issued, pending, or licensed worldwide). The HT-PEM fuel cell technology enables off-grid power systems to produce clean power from various green fuels (hydrogen, methanol, bio and e-Methanol, and renewable natural gas) and to function with higher efficiency at extreme ambient temperatures and in general extreme environmental conditions (humidity, air pollution). Advent's main operations focus on developing and manufacturing the Membrane Electrode Assembly (MEA) and the fuel cell stack, which is the core electrochemical element and the most critical component of the fuel cell. The MEA and the fuel cell stack largely determines lifetime, power density, efficiency, and overall cost of installation and operation for all applications. Advent is working with global market-leading OEMs with the goal of bringing to the market complete fuel cell systems for a range of applications in the stationary power markets (backup, off-grid, and portable power) and the heavy-duty mobility markets (automotive, aviation, marine).

 Our mission is to bring fuel cells that have a lower Total Cost of Ownership (TCO) to market when compared to diesel generators and internal combustion engines. Our goal is to become a leading provider of HT-PEM fuel cell systems, stacks and HT-PEM-based membrane electrode assemblies ("MEA" or "MEAs").

 A large portion of our current revenue is derived from Joint Development Agreements (JDAs) and Technology Assessment Agreements (TAAs) with world-leading OEMs for the development of joint products. The ultimate goal is for OEMs to bring fuel cell systems specialized for each application to the market. These systems will be branded by the OEMs and function with Advent-inside technology (the Advent MEA and/or the Advent fuel cell stack). The Company also has extensive know-how and IP in the development of complete fuel cell systems that it intends to license out to OEMs and Tier 1s through technology license agreements. While fuel cell stack sales and associated revenue is expected to provide the majority of our income in the near future, the MEA innovation is expected to facilitate future strategic partnerships between Tier 1 suppliers and us and original equipment manufacturers ("OEMs") as these downstream manufacturers develop their own white-labeled HT-PEM products. We have had early success in forging such strategic partnerships, as with the case of Airbus for the aerospace sector and previously with Siemens Energy for the maritime industry. The US Army development contracts for human portable power fuel cells also fall under this category.

 Our headquarters are in Livermore, California, and we have MEA and fuel cell stack product development facilities in Livermore, California and Patras, Greece. Our investment priorities are increasing MEA performance and meeting the milestones of the Joint Development Agreements we have with various customers and partners including Airbus, Hyundai Motors and the US Army. Our business priorities are to expand our network of strategic OEM relationships in the Automotive and large-scale Stationary power markets.

 Our Background

 Advent Technologies Holdings, Inc., a Delaware corporation (the "Company"), was originally named AMCI Acquisition Corp. ("AMCI"), and was established as a special purpose acquisition company, which completed its initial public offering in November 2018. AMCI was incorporated for the purpose of effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination with one or more businesses, and, prior to the Business Combination, the Company was a "shell company" as defined under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), because it had no operations and nominal assets consisting almost entirely of cash.

 On February 4, 2021, AMCI consummated the previously announced business combination ("Business Combination") pursuant to the terms of that certain agreement and plan of merger (the "Agreement and Plan of Merger") dated October 12, 2020, by and among AMCI, AMCI Merger Sub Corp., a Delaware corporation and newly formed wholly-owned subsidiary of AMCI ("Merger Sub"), AMCI Sponsor LLC (the "Sponsor"), solely in the capacity as the representative from and after the effective time of the Business Combination for the stockholders of AMCI, Advent Technologies, Inc., a Delaware corporation ("Legacy Advent"), and Vassilios Gregoriou, solely in his capacity as the representative from and after the effective time for the Legacy Advent stockholders (the "Seller Representative"), as amended by Amendment No. 1 and Amendment No. 2 to the Agreement and Plan of Merger, dated as of October 19, 2020 and December 31, 2020, respectively, by and among AMCI, Merger Sub, Sponsor, Legacy Advent, and Seller Representative. In connection with the closing of the Business Combination (the "Closing"), AMCI acquired 100% of the stock of Legacy Advent (as it existed immediately prior to the Closing) and its subsidiaries.

 On the Closing Date, and in connection with the Closing, AMCI changed its name to "Advent Technologies Holdings, Inc." and each outstanding share of Class A common stock, including any shares of Class B common stock that were converted into shares of Class A common stock, were redesignated as our Common Stock. We continued the listing of our Common Stock and public warrants (or tradeable warrants) on the Nasdaq under the symbols "ADN" and "ADNWW", respectively. Prior to the Closing, our Class A common stock, public warrants and units were listed on the Nasdaq Stock Market under the symbols "AMCI", "AMCIW" and "AMCIU".

 The rights of holders of our Common Stock and warrants are governed by our second amended and restated certificate of incorporation, our amended and restated bylaws and the Delaware General Corporation Law (the "DGCL"), and in the case of the warrants, the Warrant Agreement, dated November 15, 2018 by and between AMCI and Continental Stock Transfer & Trust Company, as warrant agent. See the section entitled " Description of Securities".

 Recent Developments

 RESCUE Project

 The Company, through its wholly-owned subsidiary, Advent Technologies, SA, announced on February 11, 2025 the launch of the RESCUE project, a strategic initiative funded under the HORIZON-JTI-CLEANH2-2024-04-01 call for "Portable Fuel Cells for Backup Power During Natural Disasters to Support Critical Infrastructures." The four year project has a total budget of 5 million, and a funding rate of 70%. Advent's approved budget for the initiative is 2.16 million.

 RESCUE aims to develop a certified, portable 50 kW power generator system designed to deliver reliable, sustainable backup power in critical situations based on HT-PEM technology. This collaborative effort brings together world-class partners, led by DLR (Germany) as the project coordinator, with participation from Advent Technologies (Greece), CERTH (Greece), THW (Germany), DTU (Denmark), and ProACT (Greece). The RESCUE project responds to the critical need for sustainable, portable power solutions, particularly in disaster-stricken regions where supporting essential infrastructure is paramount. By utilizing hydrogen and hydrogen-rich fuels, the project aims to set new benchmarks for energy resilience and environmental sustainability.

 Advent Technologies will play a pivotal role in the project as the primary technology provider, focusing on system integration and innovation. The key deliverable is a 50 kW High-Temperature Proton Exchange Membrane Fuel Cell (HT-PEM FC) dual-fuel portable power generator system. This system will consist of a generator module and a fuel tank, each housed in separate 20-foot containers for optimal mobility and deployment.

 RHyno Project

 The Advent Renewable Hydrogen Innovative Technologies (RHyno) project involves the establishment of infrastructure for developing and manufacturing innovative fuel cells, electrolysers, and their key components including Advent ground-breaking Membrane Electrode Assembly technology at a megawatt (MW) scale. RHyno aims to pioneer the use of innovative materials to enhance power density and lifespan while significantly reducing the weight and volume of power systems through a streamlined balance of plant.

 The planned state-of-the-art facility is designed to optimize production processes, boost efficiency, and industrialize fuel cell and electrolyser technologies. These advancements are essential for decarbonizing carbon intense industries, such as the aviation, maritime and heavy-duty automotive sectors, with further potential for spillover to other sectors, positioning Advent at the forefront of the clean energy transition.

 The Fuel Cell Market

 Fuel cell and hydrogen technology are expected to play a critical role in global decarbonization. In order to meet the targets established in the Paris Climate Accords, which seek to mitigate climate change and maintain global temperatures less than 1.5 C-2.0 C above pre-industrial levels, the international community will need to accelerate the adoption of technologies like our fuel cells that reduce or eliminate emissions of carbon dioxide and other greenhouse gases.

 In addition, the challenges associated with existing battery technology limit it from mass adoption across industries. Globally, an average of $38 billion per annum is expected to be invested in the hydrogen and fuel cell sector between 2020 and 2040 to increase production capacity while significantly lowering the cost of manufacturing. While the availability of hydrogen limited the fuel cell industry in the past, it is now expected to become an opportunity for growth, particularly in sectors such as industrials, power generation, and automotive.

 We believe that fuel cells will be a key component of the future energy generation platform given that:

 Fuel cells generate electricity and heat from hydrogen-based fuels, thereby substantially reducing emissions of carbon dioxide and other pollutants generated by the combustion process in internal combustion engines ("ICE" or "ICEs") and diesel generators. Fuel cells can be powered autonomously for hours or days when the fuel comes from a discrete source or for longer when there is a pipeline or other large available source of fuel, such as a tank.

 Fuel cells utilize fuels with a high energy density relative to lithium-ion batteries and other battery technology (according to ARPA-E power densities, hydrogen contains 40,000 Wh/kg while lithium-ion batteries carry only about 260Wh/kg). This makes fuel cell technology well-suited for use in heavy-duty mobility (marine, aerospace, trucks) and off-grid energy generation applications where battery technology faces limitations such as lifespan, self-discharge, weight (for longer run times or higher power outputs, fuel cells are between 3 to 25 times lighter than batteries providing equivalent power), operation under almost any weather conditions, and recharge times.

 Hydrogen is already used to create liquid, synthetic fuels (eFuels like e-Methanol, made by combining hydrogen with carbon dioxide for a net-zero liquid fuel) that have the advantage of lower transportation costs and network infrastructure investment relative to hydrogen gas. Interim fuels like methanol produced from natural gas have become subject to increasing interest worldwide because they are currently available, cleaner, and less expensive than diesel. We believe e-Methanol has the potential to become a leading zero-emissions liquid fuel that can leverage the current global infrastructure from gas stations to fuel tankers and trucks. Given the urgency to decarbonize power generation and the challenges the investment requirement poses for developing countries, we expect methanol to have an increasingly significant role as a liquid hydrogen carrier and a low/no carbon dioxide emission alternative to oil.

 The High-Temperature PEM Fuel Cell Technology

 Our fuel cells are developed with the general concept of using "Any Fuel. Anywhere." because of the HT-PEM technology we have pioneered since 2006. HT-PEM fuel cells have the advantage of operating with multiple low-carbon fuels (in addition to hydrogen), better heat exchange management, and efficiency, and they operate reliably under extreme conditions. Our high-temperature fuel cells operate between 80 C and 240 C, unlike typical LT-PEM fuel cells that are limited to below 100 C. This temperature advantage allows the fuel cell to work with other fuels and to have reliable operation at extreme conditions, which we believe are both significant competitive advantages for the stationary power generation market.

 Within the fuel cell market, our products have significant advantages relative to those of our competitors, who are focused on low-temperature proton exchange membrane technology ("LT-PEM" or "LT-PEMs"). We believe these advantages will help us secure commercial opportunities in the fuel cell market and help drive the widespread adoption of fuel cell technology.

 A. "Any Fuel": Advent's HT-PEM fuel cells are designed to be multifuel

 "e-Fuel-ready": While LT-PEMs require high-purity hydrogen to operate, our HT-PEMs can utilize low-cost and abundant hydrogen-carrier fuels, including methanol, natural gas, eFuels, hydrogen extracted from liquid organic hydrogen carriers, dimethyl ether, and renewable biofuels. We have focused on optimizing our fuel cells for methanol, a liquid green hydrogen carrier. Methanol comes in three main forms:

 Gray (natural-gas-based) methanol is the most promising interim semi-clean alternative to diesel.

 Advantages: 40% lower CO2 emissions, lower price than diesel, no NOx, SOx.

 Biomethanol is currently available.

 Advantages: 80% lower CO2 emissions, lower price than diesel, no NOx, SOx.

 e-Methanol is already under production, with approximately 78 projects underway globally, aiming to produce 11.7 million tones by 2028. eMethanol is produced from green hydrogen and is, therefore, a green liquid fuel.

 Advantages: 80% lower CO 2 emissions, lower price than diesel, no NOx, SOx.

 To date, Advent has delivered over 1,200 of these systems, totaling 731,274 operational hours and consuming 1.2 million liters of methanol (as of March 2024). These systems serve telecom towers, critical infrastructure, and defense applications, capitalizing on logistical simplicity and the advantages of fuel availability.

 "Enhanced Market Opportunity": The infrastructure required for clean energy powered solely by high-purity hydrogen would cost trillions of dollars. In contrast, many of the hydrogen-carrier fuels, like e-Methanol, can use existing or in-development infrastructure and have a much lower transport cost than hydrogen. This key technology differentiator bypasses the need to commit to a specific energy distribution network and leverages existing infrastructure. Most importantly, it provides an immediately serviceable market today, while we believe many LT-PEM competitors may have to wait at least another decade for the availability of green, high-purity, inexpensive hydrogen, and potentially longer for the maturity of hydrogen transportation and storage networks. Given the urgency to decarbonize power generation and the investment challenges developing countries face, we expect e-Methanol to have an increasingly significant role as a liquid hydrogen carrier and a low or no carbon dioxide emission alternative to oil.

 Production of green hydrogen remains very expensive. In addition, the cost to transport and distribute green hydrogen is exceptionally high in the same range as the cost of production, and with significant losses, whether liquification, compression, or conversion to ammonia, is considered. Compared to the above, e-Methanol can be produced by combining green hydrogen with CO 2 using well-known synthesis processes and creating a liquid green fuel that can be transported, stored, and distributed through established global logistics networks. For example, a gas station would require minimal modifications to be able to dispense methanol, while by comparison, a hydrogen station would require an investment of millions and a new location.

 Therefore, Advent's fuel cells optimized for e-Methanol are highly suitable for applications where liquid fuel is preferable, and the transportation of hydrogen or batteries (requiring frequent recharging) is highly inefficient. Such applications are off-grid power, telecom tower power, shipping, off-grid charging stations, bad-grid infrastructure, defense, security, emergency response missions, and generally, any area where a diesel generator or a heavy portable battery has applications. We believe decreasing fuel cell costs due to technology innovation and manufacturing scale-up can allow us to grow in the power generation market and potentially displace diesel generators in applications with a clear total cost of ownership value proposition, in addition to the environmental mandate.

 B. Anywhere: Advent's HT-PEM fuel cells are designed to work under extreme conditions

 Extreme Weather Conditions: Our HT-PEM fuel cells can operate in various practical conditions, including a wide range of geographies, weather, ambient temperatures (as low as -20 o C and up to +55 o C), and in humid or polluted environments. On the other hand, LT-PEM fuel cells tend to struggle in the heat, can be damaged by dry climates or polluted air, and cannot handle the impurities of the hydrogen supply.

 Superior Heat Management: HT-PEM fuel cells operate at high temperatures (between 160 C and 220 C, with next-generation MEA-based fuel cells operating between 80 C and 240 C). Therefore, the temperature differential between an HT-PEM fuel cell and the outside environment is large. As a result, only a small radiator, similar to or smaller than the radiator in an ICE vehicle, is needed to transfer heat away from the fuel cell stack. Conversely, because LT-PEM fuel cells run relatively cooler (usually under 85 C), a significantly larger radiator is required to effectively maintain suitable operating temperatures and conditions for an LT-PEM fuel cell.

 The heat management advantage makes HT-PEMs ideal for the aerospace and heavy-duty truck sectors, among others. An aircraft flying in hot weather, over 35 C, a truck in Arizona or India operating in such high outside temperatures, would need a high to prohibitive amount of power to be wasted just for cooling down, rendering competitive technologies inefficient.

 This advantage has been the key reason that Advent has had success in establishing strategic relationships with companies in the Aerospace and Automotive sector, such as the Joint Development Agreements with Airbus and Hyundai, as well as multiple Technology Assessments (which we aim to convert to Joint Development Agreements or Technology License Agreements) with other world-leading companies in these two fields.

 Fuel and Air Quality Tolerance: Fuel cell systems take hydrogen and air as inputs. Any low-quality intake, even in one instance, may destroy an LT-PEM fuel cell. LT-PEM technology is intolerant to CO damage (with performance degradation at levels as low as 10 ppm), while HT-PEM can withstand 1-4% CO concentrations, depending on temperature and operation. For example, readily available low-cost hydrogen can be made with 1-2% carbon monoxide (20,000ppm), which works well with HT-PEMs. LT-PEM loses performance with only 10 ppm of carbon monoxide. The relative durability of our products in a range of environments also provides a longer life of operation relative to LT-PEM fuel cells.

 Water Management Issues: HT-PEM fuel cells use phosphoric acid as an electrolyte rather than water-assisted membranes. Therefore, they reduce the need for water balance and other compensating engineering systems.

 Simplified Design for Manufacturing: Our HT-PEM technology significantly reduces the balance of plant requirements of a fuel cell system relative to LT-PEM fuel cells due to the water, heat management, and air/fuel advantages described above. This means that HT-PEMs have simplified requirements for supporting components and auxiliary systems, which enables reduced cost and increases application range for the end-user.

 The Advent MEA

 In order to achieve high-temperature operation, we develop highly differentiated chemistry components, the MEAs. In particular, we are developing a new Advanced MEA ("Advent MEA"). The Advent MEA has been developed in collaboration with the U.S. DoE after we were awarded the L'Innovator commercialization program. Under this program, we are working closely with the Los Alamos National Laboratory (LANL), Brookhaven National Laboratory (BNL), and National Renewable Energy Laboratory (NREL), to commercialize the decade-long materials advancements in the field of MEA development. We expect that these next-generation MEAs will bring the HT-PEM technology into the mobility area by enabling fuel cells to be lightweight with high-power density. The Advent MEA is also anticipated to eventually deliver as much as three times the power output and lifetime versus the current MEA product. While we are already projecting being able to pass through substantial cost benefits to its customers through economies of scale as it increases MEA production, the successful development of the Advent MEA will be an important factor in delivering the required improvement in cost-effective performance to our customers.

 We believe that Advent stands at the forefront of revolutionizing the global fuel cell market with its groundbreaking Advent MEA technology, which has been developed through strategic collaborations with esteemed institutions such as Los Alamos, Brookhaven, and the National Renewable Energy Laboratories. In August 2023, Advent was honored to receive the prestigious Richard P. Feynman Innovation Prize for Technology Transfer Excellence from the U.S. Department of Energy's Los Alamos National Laboratory, recognizing the groundbreaking potential of Ion Pair MEAs. Similarly, in November of 2024 Advent and Los Alamos National Laboratories were listed as being among the top 100 R&D technologies worldwide. These MEAs have demonstrated exceptional performance in challenging applications, particularly in heavy-duty mobility. They are promising to match LT-PEM in power density and lifetime and offer unparalleled versatility for a wide range of applications due to their ability to operate from 80 C to 200 C. The technology's heat rejection capabilities render it ideal for aerospace and truck markets. Through ongoing Joint Development Agreements with renowned global enterprises such as Airbus and Hyundai Motor Company, Advent focuses on integrating its Advent MEA technology into their fuel cell projects. Simultaneously, Advent has engaged in technology assessments with five additional global leaders to expedite HT-PEM MEA development for mobility markets. By combining LT-PEM's power density potential with HT-PEM's resilience and multifuel capability, we believe Advent MEAs offer increased operational lifetimes and the ability to operate at far higher current densities compared to existing high-temperature MEAs. Advent holds unique intellectual property rights over the core technology and the manufacturing scale-up of the MEA. HT-PEM fuel cells featuring Advent's Advent MEA aim to offer tripled lifespan and power density compared to previous products. The anticipated result of significant improvements in lifetime and power density is expected to dramatically reduce the total cost of ownership of Advent's fuel cell solutions. Advent has established resources in the USA and Europe to mass-produce the Advent MEA and is expanding its partner network to license our hardware technology. Framework agreements are under negotiation with end-users, as well as licensing agreements with Tier 1 manufacturers and global leaders in stationary and off-grid power equipment. Joint Development Agreements with the aerospace, marine, and automotive sectors are expected to accelerate the Ion Pair MEA technology in 2025 and 2026, with commercial scale-up planned for late 2026. Additionally, the Defense solution under development (Honey Badger 50) is also expected to transition to mass production by 2026.

 Acquisitions and Other Significant Milestones

 Advent Technologies LLC: Advent and U.S. Department of Defense (the "US DoD") are in constant discussions during the progress of ongoing programs with ENVISION, and we have received the green light from the US DoD to make additional proposals for new programs focusing on further improvement of Honey Badger product on one hand and also leveraging its manufacturability towards mass production.

 We have significantly streamlined our product, system integration, manufacturing, and testing capabilities, avoiding duplication and abandoning less promising product development efforts to manage costs better. During this process, we have significantly reduced personnel and support activities in certain locations where overlap existed after the acquisitions.

 Advent's Livermore subsidiary brings Silicon Valley-type innovation. Ion Pair MEA technology brings a significant advantage toward reducing cost and increasing the performance of our systems. Our investment plan reflects its strategic goal to assemble significant global know-how of the HT-PEM industry.

 Following the expected availability of EU Innovation funds from the RHyno Project, we will expand R&D operations in the selected region of Western Macedonia, Greece. We expect to focus future activity plans in Greece and the USA (for MEA and defense-market-related reasons) while product development efforts will be across the USA and Greece.

 Business Strengths

 Highly Differentiated Technology: We believe that for the reasons explained above, HT-PEM is a highly differentiated technology that provides significant competitive advantages to Advent and our partners. HT-PEM technology is a new and promising technology when compared to LT-PEM (Low Temperature Proton Exchange Membrane), that was developed for the last 50 years and may have plateaued in terms of expected technology breakthroughs needed to overcome thermal control and environmental limitations.

 Experienced management team with a proven track record: We were founded and managed by world-class electrochemists, material scientists, and fuel cell specialists with significant industry and manufacturing expertise. We have received numerous R&D funds from the US DoE and the European Union and are considered a pioneer with years of experience in clean energy technology innovation. The team that we have recruited to bring innovation to the fuel cell industry is highly experienced and has a long pedigree in R&D and world-class manufacturing. Our team has been developing MEA components since 2006 and is led by Dr. Emory De Castro (CTO).

 Strategic Partnership with US DoE and Los Alamos National Laboratories: In addition, we initiated in 2021 a Cooperative Research and Development Agreement (CRADA) under the U.S. Department of Energy ("DoE") umbrella to commercialize next-generation MEAs and ultra-low platinum catalyst solutions developed by the National Laboratories at Los Alamos, Brookhaven, and NREL, in the U.S. We were selected as the scale-up and commercialization partner of the DoE and are working closely with the highly-skilled R&D teams of top U.S. government laboratories.

 MEA IP and Technology: We firmly believe in the transformative potential of the Advent MEA to redefine the global fuel cell market, enabling applications that were previously unattainable with conventional fuel cell materials. Our objective is to enhance the MEA's capabilities when operating at 160 C to 180 C for more than 20,000 hours, delivering a higher power density that will result in a simpler, more cost-effective system with superior performance in terms of weight, power, lifetime, total cost of ownership, and infrastructure investment. As we continue to strengthen our collaborations with some of the world's largest OEMs and Tier 1 Manufacturers, our aim is to capitalize on the growing momentum and demand for our HT-PEM technology.

 Products and Services

 We derive revenue from the following sources:

 1.

 Engineering and License Fees: In the mobility sector (e.g., heavy-duty automotive, mining equipment, marine, aerospace), we are entering into Joint Development Agreements ("JDAs") (as in the case of Hyundai and Airbus) to develop joint solutions for specific sectors. We plan to enter into Technology License Agreements ("TLAs") to allow 3rd party Tier 1 manufacturers or world-leading companies to market the licensed Advent technology in exchange for a license fee. We intend to be a provider of MEAs and core technology via licensing rather than producing complete fuel cells for the mobility industry. Revenue from JDAs may include engineering fees during the 1-3 year initial development cycle ("JDA fees"), MEA sales, and ongoing licensing fees.

 2.

 MEA Sales: We develop and manufacture the critical component of the fuel cell, the MEA. The operation of the MEA is key to the functionality and characteristics of a fuel cell system. In addition to our fuel cell system offerings, our MEA is a discrete product offering to third-party manufacturers. MEA sales are expected to be a rapidly growing market as more fuel cells are deployed globally by third parties, especially in the mobility space.

 3.

 Fuel Cell Systems and Stacks: As our JDAs mature and move to manufacturing partnerships we expect to derive revenue from fuel cell systems and stacks for portable and stationary power generation applications range from 20W to MWs. These fuel cells have applications in the data center, commercial and industrial backup, telecom tower and other critical infrastructure (e.g., 5G, 4G) power, defense (and other portable power applications), and heavy-duty mobility (automotive trucks, aviation, marine) power markets.

 Addressable Markets

 Based on the several critical advantages offered by our HT-PEM technology over batteries and LT-PEM technology, we expect to be highly competitive in numerous applications. Our HT-PEM fuel cells and MEAs are well-suited to off-grid power, portable power applications, combined heat and power, and mobility ( e.g., heavy-duty automotive, aviation, mining equipment, marine, and UAV). Our goal is to partner with Tier 1 suppliers and OEMs in these new markets, focusing on fuel cell technology development, licensing, and the mass production of the next-generation MEAs.

 Off-Grid & Backup Power: We have a strong presence in the off-grid power market, with our discontinued legacy product SereneU product offering having shipped about 1,200 systems worldwide to telecommunications providers for backup power systems and stationary power sectors. Methanol is easier and cheaper to deliver to remote locations compared to pure hydrogen, providing our HT-PEM technology with an advantage in the off-grid market. Off-grid fuel cell solutions can use methanol, which is already available at some remote industrial sites, like wellheads. Fuel cells in these applications produce significantly fewer greenhouse gases than ICE generators and produce power without ICEs' attendant high levels of nitrogen oxides, sulfur oxides, or particulate emissions. Off-grid power solutions have the potential to run full-time, 365 days a year, 24 hours per day.

 Portable Power for Construction, EV Charging Applications, and Events): In December 2023, Advent demonstrated a portable clean power solution designed for various applications, including construction sites, remote EV charging stations, events, and concerts. This innovative solution integrates both a battery and a fuel cell, operating seamlessly on liquid green fuels such as methanol, biomethanol, or eMethanol. Battery-only systems face challenges in off-grid applications as they require continuous relocation to the grid or alternative power sources for recharging. Diesel generators emit harmful emissions, noise, and pose risks of fuel theft. Pure hydrogen systems entail significant fuel sourcing, storage, and transportation costs in off-grid locations. Recognizing a specific market demand within the construction rental sector, particularly in anticipation of forthcoming regulations prohibiting diesel gensets,

 Human-Portable Power: Our acquisition of Silicon Valley-based UltraCell provided us with complete system technology for the portable power and defense markets. Electrification is one of the key initiatives in the defense industry as the needs for mobility and power on demand are increasing dramatically. Our fuel cells have already been deployed by the US DoD, in the XX-55 portable power system, while the next-generation "Honey Badger" product, a wearable fuel cell designed to provide soldiers with on-the-go power, is currently in the US DoD's demonstration/validation program.

 Marine: In the marine industry, neither compressed hydrogen nor batteries are a viable option for commercial shipping. The industry is evaluating alternative fuels to replace bunker fuel, and methanol appears to be among the most likely hydrogen carriers positioned to meet the European Union's 2050 decarbonization objectives. Our fuel cells are well-suited for methanol use, as the high-temperature operation can use low-grade hydrogen (converted from methanol via reformation) that does not work with current LT-PEM fuel cells. Applications in the marine industry are likely to develop initially in auxiliary power and smaller ships and eventually scale to the multi-MW range main propulsion market. Our fuel cells promise fuel flexibility with hydrogen gas, liquid organic hydrogen carriers, methanol, and natural gas and operate at high temperatures through proprietary chemistry. Marine applications could be scalable for divergent load requirements and applications such as powering the entire propulsion system or, alternatively, providing auxiliary power to a differently powered primary propulsion system. Marine fuel cell usage could offer long range and fast refill; unlike battery power, longer routes and larger vessels can be powered by fuel cells as compared to batteries. In addition, fuel cells can be used in a hybrid structure in conjunction with battery power. We are planning our initial focus on applications for auxiliary marine power, and then we plan to focus on the main power of vessels.

 The above markets define our current products, while the markets below constitute its largest opportunities for growth in the future:

 Combined Heat and Power ("CHP"): By virtue of their high-temperature operation, HT-PEM fuel cells are well suited for delivering heat in addition to power to large commercial buildings and single or multi-family homes. The CHP efficiency is in the 85%-90% range, making HT-PEM fuel cells highly efficient for such uses. HT-PEM fuel cells can be supplied by existing natural gas infrastructure and eventually by a future hydrogen-blend or pure-hydrogen pipeline network.

 Automotive: Our fuel cells can work together with EV batteries, charging batteries on-board by converting high-purity hydrogen or hydrogen-carrier fuels into electricity, and thus solve the range and recharging issues that battery-only electric vehicles currently face. This issue is a particular challenge in heavy-duty and commercial vehicles. Since our fuel cells can use hydrogen-carrier fuels such as eFuels and biofuels, we believe that our technology can be critical in accelerating the mass adoption of electric vehicles and the shift away from ICEs. Existing battery and LT-PEM technology have challenges in meeting heavy-duty transportation needs, which require long-range, heavy payloads, fast refill times, and the ability to operate in diverse environments. For example, LT-PEM fuel cells cannot operate efficiently in hot environments because the radiator required to cool the MEA to the appropriate temperature range would be too large and impractical. The use of battery-only technology has the added disadvantage of insufficient power capacity without a substantial volume and weight of batteries, which significantly reduces cargo capacity.

 Aerospace: The recent JDA with Airbus showcases the potential of HT-PEM technology for the Aerospace sector. The primary aim of our collaborative project is to expedite the advancement of Advent's Ion Pair MEA technology, aligning it with aviation standards and anticipated technological thresholds. Our overarching objective is to assist Airbus in realizing its vision of propelling aircraft solely through fuel cells. Central to the project's mission is addressing the requirements for future hydrogen-powered aircraft, emphasizing the potential for substantial weight and volume reduction in the powertrain system. This will be achieved through streamlining the balance of plant and cooling subsystems. We anticipate that our technology will play a pivotal role in realizing this milestone, potentially leading to widespread adoption across numerous aircraft in the near future. Given LT-PEM systems' heat exchange issues, high-temperature operation in aviation is essential. In addition, our fuel cells can deliver a much longer range (autonomy) and better utilization (through faster time to refill and greater payload) for aircraft, commercial drones, eVTOLs, and auxiliary power for traditional aircraft than battery power alone can deliver. Compared to battery-powered flights, aircraft powered by fuel cells using next-generation HT-PEMs and ultra-lightweight non-metal plates could increase range, payload/passenger capacity, and the number of trips made on one charge or fill-up. HT-PEM aircraft have the potential to refuel significantly faster than an equivalent battery could recharge. The high-purity hydrogen currently required by LT-PEM is considered unsafe for widespread commercial use. At the same time, our HT-PEM provides sufficient range using safer liquid fuels, and the Company believes it is critical to efficient real-world flight usage. Hydrogen gas and dimethyl ether are suitable for fuel for aviation fuel cells, and both work well with HT-PEM technology. Fuel cells have shown that drones can stay airborne for longer, enhancing their value proposition and business applications.

 Stationary Power for Data Centers, Microgrids, and Buildings: With a run-time of 200 hours per year (serving as backup) and typical power generator sizes ranging from 1 to 20MW, the total deployed capacity of power generators in data centers globally stands at 5.6GW. This highlights a substantial market for green power generation solutions, presenting a unique opportunity for Advent's fuel cells and clean power solutions to be widely deployed in the data center industry. There is significant potential for mass adoption in data center, off-grid and microgrid hybrid systems, as a source of power with global average run-hours ranging from 2,920 to 8,760 annually. Advent fuel cells also fit well in industrial facilities, hospitals, and hotels, with backup systems averaging 200 to 800 run hours annually.

 Business Strategy

 Our growth strategy is focused on targeting the following four sectors:

 The stationary off-grid market is expected to be a growing market.

 The large-scale fuel cell systems market (power generation, data centers and power to gas).

 The human-portable defense, surveillance, energy infrastructure, and leisure market based on our innovative Honey Badger products.

 The development of next-generation MEA and fuel cell solutions for the mobility market.

 Our approach extends beyond direct sales; we actively supply our membrane electrode assemblies (MEAs) to other fuel cell manufacturers, and we intend to supply core technology through technology transfer agreements to OEMs. This serves as a cornerstone for our expansion plans, focusing on scaling up through the licensing of our technology. Central to our strategy for future growth is the emphasis on licensing agreements with large-scale manufacturers possessing market access and robust service, support, and capital expenditure capabilities. Through partnerships with Tier1s and OEMs, we empower our collaborators to innovate and commercialize fuel cell systems powered by Advent's proprietary technology on a significant scale. Our collaborators actively manage the entire value chain, including sales, marketing, and after-sales service. Until these partnerships mature and reach the mass manufacturing stage, we derive revenues from major partners through Joint Development Agreements, which are pivotal in financing the early stages of market-specific product development.

 As our business ramps up to mass production, we plan to pursue a revenue model that includes fuel cell system sales, MEA sales, and hardware-technology licensing fees. Our customer relationship is split into two phases: 1) partner with OEMs to co-develop customized fuel cell systems based on our expertise in MEAs and HT-PEM fuel cell systems. During the product development phase, we earn engineering fees, and 2) once the industry and application-specific fuel cell system are qualified, we intend to license the hardware design to OEMs or Tier1s for large-scale manufacturing in exchange for license fees. In addition, we intend to manufacture and sell proprietary MEAs directly to OEMs and Tier1s. We expect high-margin licensing fees and MEA sales to become a larger component of our revenue mix over time (vs. direct fuel cell system sales) as our customers scale to mass manufacturing of fuel cells and other products.

 We intend to focus future production activities in the USA and potentially in Western Macedonia, Greece, upon IPCEI funding approval. We have significant capacity in place when it comes to MEA manufacturing. Regarding fuel cell manufacturing, we expect to license the technology to large-scale manufacturers and selectively manufacture it (for defense and other promising markets directly).

 Specific Product Offerings Under Development

 A.

 Advent MEA:

 The Advent MEA (also called the "Ion Pair MEA") allows HT-PEM fuel cells to operate between 80 C and 240 C with an optimal temperature of 160 C. The implications of high-temperature operation are:

 1.

 It is ideal for eFuel-based fuel cells (e-Methanol). The HT-PEM fuel cell can work with reformate gas, impure hydrogen, and eFuels, so there is no need for new infrastructure. The existing fossil liquid fuel infrastructure, with minimal changes but without the carbon footprint, can be used for shipping, powering off-grid generators, and solving the hardest mobility electrification applications where batteries are simply not enough. (Our systems require a single-stage methanol or alternative eFuel gas reformer, typically yielding approximately 70% hydrogen and 1-2% carbon monoxide, with the remaining balance being carbon dioxide. In contrast, competing systems necessitate costly multistage reformers and palladium-based purifiers to maintain carbon monoxide levels below 10-15 ppm, a requirement for the operation of LT PEM.

 2.

 It enables highly-efficient thermal management at the system level, making our fuel cells ideal for aviation and heavy-duty automotive. Airplanes, big trucks, excavators, and most heavy-duty applications face significant thermal management challenges. Efficient heat rejection is not possible, especially in areas of the world that keep getting hotter every year. From India to the Arizona desert, an HT-PEM fuel cell is the superior technology. By operating optimally at 160 C, the Advent MEA is the first technology to beat the US Department of Energy heat rejection target by reaching a Q/T level of 1.03 at a hot 50 C, far below the 2025 goal of 1.45 set at only 40 C, a target the current LT PEM technology can not reach. By running the MEA hot, you can keep the fuel cell engine cool and use smaller radiators for less drag.

 3.

 It enables simple design as the balance of plant is much simpler (due to nO-water management issues). The Advent MEA does not use water as the conducting medium. It is based on a unique proprietary chemistry developed by Advent and our collaborators. "No water needed" means that the HT-PEM fuel cell system's balance of plant and, thus, the design, testing, and manufacturing is much simpler. Thus the HT-PEM fuel cell can operate at extreme humidity high or low, extreme climates (temperature (-20 C to 55 C)), or air quality conditions (pollution, dust). All these factors have minimal or no effect on the HT-PEM fuel cell performance, but they can be life-ending for a typical LT-PEM system.

 B.

 Advent Fuel Cell Stack

 Following the discontinued operations in Denmark and the Serene product line, we have focused our efforts on the development of the next-generation fuel cell stack:

 The goal of this effort, which commenced in 2024 Q3 and will be ongoing, is to develop the next generation of HT-PEM fuel cells based on the Advent MEA. Performance-wise, our goal is to double the power density of the fuel cell stacks in the near future vs. the previous Serene product line (that was not based on Advent MEA) and also double the lifetime. These developments can result in a total capex reduction of approximately 3x vs. previous Serene systems, thus enabling a very attractive total cost of ownership model for almost all business cases in stationary and marine power. A further improvement target of 3x vs. previous MEAs resulting from improved Advent MEA and fuel cell stack performance can bring significant competitive advantages in the most challenging markets of Aerospace and Automotive.

 The Advent Fuel Cell Stack will be in the range of 7kW-10kW multiples of which can be placed in cabinets for higher power, such as 100kW to 150 kW; however, longer term Advent is designing a 50kW block, thus enabling multi-MW installations by deploying parallel cabinets. Other features under development are associated with Advent's proprietary edge-cooling technology, no methanol-water mix and metal bipolar plates use.

 C.

 Honey Badger

 The
Reformed Methanol Wearable Fuel Cell Power System, or "Honey Badger" is an offering marketed by our subsidiary Advent
Technologies LLC. On June 7, 2021, the US DoD, through the U.S. Army DEVCOM Command, Control, Communications, Computers, Cyber,
Intelligence, Surveillance, and Reconnaissance (C5ISR) Center, with funding through the Project Manager Integrated Visual
Augmentation System (PM IVAS), has entered into a contract with us to complete the MIL-STD certification of the cutting edge
"Honey Badger". "Honey Badger" is placed on a soldier-worn plate carrier and provides on-the-move battery
charging in the field. It has been selected by the US DoD's National Defense Center for Energy and Environment (NDCEE) to take
part in its 2021 demonstration/validation program and is the only fuel cell to take part in this program. The NDCEE is a US DoD
program that addresses high-priority environmental, safety, occupational health, and energy technological challenges that are
demonstrated and validated at active installations for military application. The product is offered at 50W and 100W power versions,
and both are in the testing and certification stages. Its core technology has completed successful field trials in Army
Expeditionary Warrior Experiments and high-altitude tests in California's Sierra Nevada. Advent Technologies LLC's
"Honey Badger 50" (the 50W power version) fuel cell is the only fuel cell that is part of this program that supports the
U.S. Army's goal of having a technology-enabled force by 2028. On August 4, 2022, we announced the launch of our HB50
power system, a compact portable fuel cell system and quiet power supply for use in off-grid field applications such as military and
rescue operations. The launch of Advent's portable power system coincided with the Company's fulfillment of its first
shipment order from the U.S. Department of Defense. The HB50 power system can be fueled by biodegradable methanol, allowing
near-silent generation of up to 50W of continuous power with clean emissions. Designed for covert operations, HB50 can easily power
radio and satellite communications gear, remote fixed and mobile surveillance systems, laptop computers, and more general battery
charging needs. HB50 is a unique technology that can save 65% of weight versus batteries over a typical 72-hour mission. The weight
savings benefit increases further for longer missions. In September and December 2023, contracts totaling $2.2 million and $2.8
million, respectively, were signed with the U.S. Department of Defense. These contracts focus on integrating the Ion Pair MEA
technology into HB50 and enhancing specific components/manufacturing processes. The objective is to facilitate the shift from
low-prototype volume to small manufacturing volume. Advent and the US DoD plan to strengthen their collaboration by
concentrating on the improved HB50 fuel cell system's manufacturing process, aiming to achieve high-volume production
capacity. Multiple applications of the HB50 are expected in the future in sectors such as robotics, agriculture, drones,
emergency operations, and consumer uses. HB50's unique design allows it to be used in soldier-worn configurations or
operated inside a portable backpack or vehicle while charging batteries and powering soldier systems, while its thermal features
allow it to operate within an ambient temperature range of -20 C to +55 C. Aside from its optimized compatibility with the
Integrated Visual Augmentation System ("IVAS"), HB50 can also power devices such as high-frequency radios, such as the
model 117G and B-GAN and StarLink terminals. HB50's durability allows it to be easily deployed in challenging conditions and
climates while supporting mission mobility for three to seven days without the need to re-supply. Since Honey Badger's fuel
cell technology can run on hydrogen or liquid fuels, the system can operate at a fraction of the weight of traditional
military-grade batteries to meet the U.S. Department of Defense's continuously evolving needs for 'on-the-go'
electronics needs. As military adoption and use of IVAS equipment continue to evolve, highly portable lightweight power solutions
like Honey Badger and HB50 will become a mission-critical necessity.

 Competition

 The market for alternative fuel and energy storage systems is still in the early stages of growth and is characterized by well-established battery and LT-PEM products. We believe the principal competitive factors in the markets in which it operates include, but are not limited to, the size, weight, lifetime, durability, and total cost of ownership of these systems to the end-user. We believe that our HT-PEM technology competes with these other technologies across a number of new and existing applications in the alternative energy fuel market, especially in the realm of fuel flexibility and heat management. We believe the total addressable market opportunity could be over $72 billion by the year 2030.

 HT-PEM vs Diesel Gensets: In contrast to polluting diesel gensets, HT-PEM fuel cell technology offers a clean and sustainable alternative ready for immediate deployment. Its adaptability extends to operating with various hydrogen-carrying fuels available in today's market. Diesel generators not only emit harmful pollutants but also pose a significant risk of fuel theft and contribute to noise pollution. With growing global concern over environmental issues, diesel gensets face escalating scrutiny and potential bans due to their emissions of pollutants such as NOx, SOx, and Particulate Matter (PM). Conversely, HT-PEM fuel cells operate without emitting harmful pollutants, while also generating minimal noise. This aligns seamlessly with evolving regulations aimed at reducing carbon footprints and underscores the viability of HT-PEM fuel cells as a sustainable energy solution.

 HT-PEM vs LT-PEM: HT-PEM technology operates at optimal temperatures for efficient heat rejection, maximizing overall efficiency and enabling operation in hot climate regions. In contrast, Low-Temperature Proton Exchange Membrane (LT-PEM) technology lacks rapid cooling capabilities, rendering it unsuitable for aerospace and heavy-duty truck applications. One of the key advantages of HT-PEM technology lies in its versatility in utilizing various hydrogen-carrying fuels, such as methanol and its derivatives. Methanol, being a liquid and easily transportable hydrogen carrier, is witnessing a steady increase in availability. Projections indicate the potential for significant growth, with 130 projects planning to produce 16 million metric tonnes (t) of methanol capacity by 2027 and 19.5 million t by 2028. Moreover, transporting compressed hydrogen off-grid presents economic challenges and safety risks. HT-PEM technology demonstrates resilience in extreme environments, offering a key differentiating factor. The absence of water in the fuel cell membrane simplifies the system and facilitates efficient operation in both hot and cold climates. Furthermore, HT-PEM fuel cells exhibit remarkable performance in extreme ambient temperatures and can function effectively even in highly polluted urban areas or harsh environmental conditions.

 HT-PEM vs SOFC: HT-PEM systems typically boast shorter start-up times compared to SOFCs, allowing for quicker deployment and response to power demands. SOFC systems are not suitable for backup or mobility applications as they are optimized to work continuously 24x7. Additionally, HT-PEM fuel cells tend to be more compact in size, offering greater flexibility in installation and integration into various applications. Cost-wise, HT-PEM systems often exhibit lower initial investment requirements compared to SOFCs, making them more accessible for a range of applications and markets. These distinctions underscore the unique advantages of HT-PEM technology in terms of efficiency, versatility, and affordability.

 HT-PEM vs Batteries: When operating as standalone power sources, batteries are often impractical and cumbersome, particularly in off-grid scenarios where they require daily transportation back to the grid for recharging. Additionally, they incur high costs and offer limited runtime, while recharging from the grid often results in higher net emissions in most countries. At Advent, we firmly believe in the transformative potential of hybrid power solutions that merge our HT-PEM fuel cell technology with batteries. Unlike traditional methods, where batteries draw power from the grid, our approach for certain applications favors charging batteries using our fuel cells to ensure unlimited green power generation and provide a consistent power supply constrained only by the availability of fuel. Furthermore, our hybrid solution offers significant cost savings and extended runtime compared to battery-only alternatives. Moreover, it achieves remarkable emission reductions, up to 80% when utilizing biomethanol fuel and 100% with e-Methanol.

 Research and Development

 Our R&D projects cover the full lifecycle of fuel cells, from their actual development and optimization for use in hard-to-abate industries such as heavy-duty mobility to the effective recycling of end-of-life systems, emphasizing our commitment to sustainability. We are actively engaged in over 20 research and development initiatives across the EU and the US, which serve as pivotal pillars for our strategic advancement. These programs afford us the opportunity to collaborate closely with some of the world's most esteemed research institutions, universities, and leading companies committed to decarbonized solutions. Through these partnerships, we continuously broaden our scope and expertise.

 Employees and Human Capital Resources

 Our employees are critical to our success. As of December 31, 2024, we had approximately 26 employees and 5 part-time contractors. We occasionally rely on additional independent contractors to support our operations. None of our employees are represented by a labor organization or are a party to any collective bargaining arrangement.

 We strive to create a collaborative environment where our colleagues feel respected and valued. We provide our employees with competitive compensation, opportunities for equity ownership, and a robust employment package, including health care, retirement benefits, and paid time off. In addition, we regularly interact with our employees to gauge employee satisfaction and identify focus areas.

 At Advent, we champion the belief that individual uniqueness enhances greatness. We uphold equal opportunities for all employees. Through rigorous protocols, we continuously work to identify and eradicate any form of harassment within our organization, fostering a fair and respectful workplace. We prioritize the value and respect of our employees, unequivocally condemning violence, discrimination, or harassment. Employees are encouraged to address any questions or concerns they may have regarding their employment or benefits with our Human Resources department. We honor and accommodate the physical or mental limitations of qualified employees with disabilities, enabling them to fulfill their job responsibilities. Furthermore, our compensation structure is determined by factors such as position, education, and experience.

 Performance Management: We are committed to optimizing performance management within our organization. Our focus lies in nurturing strong relationships between our management team and employees, fostering a culture of mutual respect across all operational sites and facilities. We conduct formal performance evaluations annually to track progress and provide feedback. Furthermore, we actively encourage ongoing dialogue between employees and supervisors to discuss development goals and performance metrics regularly.

 Talent and Training: Our employees engage in a range of inclusive training and development programs covering diverse subjects to enhance their skills and competencies. These include professional skills enhancement, human rights, ethics, health and safety in laboratory processes, and technological expertise. We also mandate standard business ethics training for all employees.

 Health Safety Wellness: To safeguard the well-being of our employees across all operational sites, we rigorously uphold and surpass relevant safety and health regulations. At every location, Advent maintains strict adherence to local health and safety standards. Our commitment to employee welfare is articulated in our comprehensive Group Health and Safety Policy. Within Advent's Employee Handbook, we delineate our existing protocols concerning health and safety matters and the oversight responsibilities of our management team.

 Intellectual Property

 Our intellectual property portfolio covers, among other things: membranes, electrodes, MEAs, and systems exploiting the unique operating characteristics of its materials. In general, our employees are party to agreements providing that all inventions, whether patented or not, made or conceived while being an Advent employee, which are related to or result from work or research that the Company performs, will remain our sole and exclusive property.

 We have been issued, acquired, licensed, or applied for approximately 150 international and United States patents, with a concentration in membranes, electrodes, and MEAs, which support its product offerings. Leveraging our membrane and electrode technologies, we also have the intellectual property for lightweight stacks made through advances in bipolar plate materials, which support water-cooled systems. This results in a simpler and more compact balance-of-plant design. Our own investments in developing leading next-generation fuel cell technology are supported by being able to leverage the research and development efforts of its strategic partners.

 Our rights to commercialize the next-generation HT-PEM materials technology from the DoE L'Innovator Program also includes rights to a portfolio of patents supporting this advanced technology. We were selected through a highly competitive bidding process by virtue of our management team's track record in taking laboratory inventions and processes through to a fully scaled and manufactured product. We expect that this technology will reduce production costs of its MEAs significantly through a 3-fold increase in power output per unit area of the membrane and will provide a longer operating lifetime and a wider temperature operating range as well as substantially lower platinum content. We expect these advantages will enable us to reduce the cost to end-users of fuel cells and encourage wider market adoption.

 Available Information

 Our principal executive offices are located at 5637 La Ribera St., Suite A, Livermore, CA 94550 and our telephone number is (925) 455-9400. We maintain a website at  Our website and the information contained on, or that can be accessed through, the website will not be deemed to be incorporated by reference in, and are not considered part of, this Annual Report on Form 10-K. Our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, including exhibits, proxy and information statements and amendments to those reports filed or furnished pursuant to Sections 13(a), 14, and 15(d) of the Securities Exchange Act of 1934, as amended, or the Exchange Act, are available through the "Investors" portion of our website free of charge as soon as reasonably practicable after we electronically file such material with, or furnish it to, the SEC. In addition, our filings with the SEC may be accessed through the SEC's Interactive Data Electronic Applications system at  All statements made in any of our securities filings, including all forward-looking statements or information, are made as of the date of the document in which the statement is included, and we do not assume or undertake any obligation to update any of those statements or documents unless we are required to do so by law.

 Item 1A.

 Risk Factors.

 An investment in our common stock involves a high degree of risks. You should consider carefully the risks described below as well as the other information contained in this Annual Report on Form 10-K before investing in our common stock. The risks described below are those that we believe are the material risks that we face. If any of the following risks actually occurs, our business, prospects, operating results and financial condition could suffer materially, the trading price of our common stock could decline and you could lose all or part of your investment. The risks and uncertainties described below are not the only ones we face. Additional risks and uncertainties not presently known to us or that we currently believe to be immaterial may also adversely affect our business. See "Forward-Looking Statements" in this Annual Report on Form 10-K.

 Risk Factors Relating to Our Operations and Business

 We have identified material weaknesses in our system of internal controls pursuant to Section 404 of the Sarbanes-Oxley Act of 2002. If not remediated, these material weaknesses could result in material misstatements in our consolidated financial statements. We may be unable to develop, implement and maintain appropriate controls in future periods.

 Our management identified material weaknesses in our internal control processes. A material weakness is a deficiency, or a combination of deficiencies, in internal control, such that there is a reasonable possibility that a material misstatement of our annual or interim financial statements will not be prevented or detected and corrected on a timely basis. Management has concluded that, because of these material weaknesses, we were unable to timely file our annual report on Form 10-K for the fiscal year ended December 31, 2023, and our quarterly reports on Form 10-Q for the quarters ended March 31, 2024, June 30, 2024, and September 30, 2024. These deficiencies primarily relate to our lack of an effective internal control structure and sufficient financial reporting and accounting personnel due to the resignation of key control operators in early 2024 including the Company's Chief Financial Officer and then the subsequent resignation of his successor soon thereafter. As a result of the material weaknesses, the Company's management, under the supervision of the Audit Committee of the Board of Directors and with participation of the Company's Chief Executive Officer and Interim Chief Financial Officer, concluded that the Company's internal control over financial reporting was not effective as of the December 31, 2023 and December 31, 2024 (including the interim periods therein).

 Although we are working to remedy the ineffectiveness of the Company's internal control over financial reporting, there can be no assurance as to when the remediation plan will be fully developed and implemented. Until our remediation plan is fully implemented, our management will continue to devote significant time, attention and financial resources to these efforts. If we do not complete our remediation in a timely fashion, or at all, or if our remediation plan is inadequate, there will continue to be an increased risk that we will be unable to timely file quarterly reports on Form 10-Q and Annual Reports on Form 10-K. Further and continued determinations that there are one or more material weaknesses in the effectiveness of the Company's internal control over financial reporting could also reduce our ability to obtain financing or could increase the cost of any financing we obtain and require additional expenditures of both money and our management's time to comply with applicable requirements. For more information relating to the Company's internal control over financial reporting, the material weaknesses that existed as of December 31, 2024 and 2023, and the remediation activities undertaken by us, see Part IJ, Item 9A, "Controls and Procedures" of this Annual Report on Form 10-K.

 If we fail to maintain an effective system of internal controls, we may not be able to accurately report our financial results or detect fraud. Consequently, shareholders could lose confidence in our financial reporting, and this may decrease the trading price of our common stock.

 We are subject to the reporting requirements of the Exchange Act, the Sarbanes-Oxley Act of 2002, or SOX, and Nasdaq rules and regulations. SOX requires, among other things, that we maintain effective disclosure controls and procedures and internal control over financial reporting. We perform system and process evaluation and testing of our internal controls over financial reporting to allow management to report on the effectiveness of our internal controls over financial reporting in our Annual Report on Form 10-K filing for that year, as required by Section 404 of SOX. As mentioned herein, we have identified material weaknesses in our internal control processes related to the separation of several members of our finance team. While we are currently working to remediate these material weaknesses, we cannot assure that, in the future, a material weakness or significant deficiency will not exist or otherwise be discovered. If that were to happen, it could harm our operating results and cause shareholders to lose confidence in our reported financial information. Any such loss of confidence would have a negative effect on the trading price of our securities.

 A control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the control system's objectives will be satisfied. Internal control over financial reporting and disclosure controls and procedures are designed to give a reasonable assurance that they are effective to achieve their objectives. We cannot provide absolute assurance that all our possible future control issues will be detected. These inherent limitations include the possibility that judgments in our decision making can be faulty, and that isolated breakdowns can occur because of simple human error or mistake. The design of our system of controls is based in part upon assumptions about the likelihood of future events, and there can be no assurance that any design will succeed absolutely in achieving our stated goals under all potential future or unforeseeable conditions. Because of the inherent limitations in a cost-effective control system, misstatements due to error could occur and not be detected. This and any future failures could cause investors to lose confidence in our reported financial information, which could have a negative impact on our financial condition and stock price.

 Our audited financial statements included a statement that there is a substantial doubt about our ability to continue as a going concern and a continuation of negative financial trends could result in our inability to continue as a going concern.

 Our audited financial statements as of and for the year ended December 31, 2024, were prepared on the assumption that we would continue as a going concern. Our audited financial statements as of and for the year ended December 31, 2024, did not include any adjustments that might result from the outcome of this uncertainty. Our management has determined that there is a substantial doubt about our ability to continue as a going concern over the next twelve months based on the insufficient amount of cash and cash equivalents and net revenue from operations, as of the financial statement filing date and our independent registered public accounting firm has included an explanatory paragraph in their report on our financial statements as of and for the year ended December 31, 2024, stating that we have concluded that a substantial doubt exists about our ability to continue as a going concern. In addition to cash inflows from operations, the Company pursues additional debt and/or equity funding.

 We have incurred losses since inception and we expect that we will continue to incur losses for the foreseeable future.

 We have not been profitable since operations commenced, and we may never achieve or sustain profitability. We expect to continue to incur net losses and generate negative cash flows until we can produce sufficient revenues and gross profit to cover our costs. We may never become profitable. Even if we do achieve profitability, we may be unable to sustain or increase our profitability in the future. We will require significant additional capital to continue operations and to implement our business strategy. We cannot estimate with reasonable certainty the actual amounts necessary to successfully complete the development, manufacture and commercialization of our products and there is no certainty that we will be able to raise the necessary capital on reasonable terms or at all.

 We may be unable to adequately control the costs associated with our operations.

 We will require significant capital to develop and grow our business, including developing and manufacturing our fuel cells and building Advent's brand. We expect to incur significant expenses which will impact our profitability, including research and development expenses, raw material procurement costs, sales and distribution expenses as we build Advent's brand and market our fuel cells, and general and administrative expenses as we scale our operations. Our ability to become profitable in the future will not only depend on our ability to successfully market our fuel cells and other products and services, but also to control our costs. If we are unable to cost efficiently design, manufacture, market, sell, distribute and service our fuel cells, our margins, profitability and prospects would be materially and adversely affected.

 We may need to raise additional funds and these funds may not be available to us when we need them. If we cannot raise additional funds when we need them, our operations and prospects could be negatively affected.

 The scale-up of production of our fuel cells, membranes and electrodes, together with the associated investment in our assembly line and product development activities, will consume capital. To ensure that we will have sufficient capital to fund our planned operations, we intend to raise additional funds through the issuance of equity, equity related or debt securities, or through obtaining credit from government or financial institutions. This capital will be necessary to fund our ongoing operations, continue research, development and design efforts, improve infrastructure, and introduce new technologies. We cannot be certain that additional funds will be available to us on favorable terms when required, or at all. If we cannot raise additional funds when we need them, our financial condition, results of operations, business and prospects could be materially adversely affected.

 We continue to generate a low level of revenue from our core products.

 Based on conversations with existing customers and incoming inquiries from new customers, we anticipate substantial increased demand for our MEAs and fuel cell systems from a wide range of customers as we scale up our production facilities and testing capabilities, and as the awareness our MEA capabilities become widely known in the industry. We expect both existing customers to increase order volume, and to generate substantial new orders from major organizations, with some of whom we are already in discussions regarding prospective commercial partnerships and joint development agreements. As of December 31, 2024, we were still generating a low level of revenues compared to our future projections and have not made major commercial sales to global OEM organizations.

 If we fail to manage our future growth effectively, we may not be able to market and sell our fuel cells successfully.

 Any failure to manage our growth effectively could materially and adversely affect our business, prospects, operating results and financial condition. We intend to expand our operations significantly. Our future expansion will include:

 training new personnel;

 forecasting production and revenue;

 geographic expansion;

 controlling expenses and investments in anticipation of expanded operations;

 entry into new material contracts;

 establishing or expanding design, production, licensing and sales; and

 implementing and enhancing administrative infrastructure, systems and processes.

 We intend to hire additional personnel, including design and production personnel. Because our technologies are different from traditional electric vehicle battery technology, individuals with sufficient training in alternative fuel and electric vehicles may not be available to hire, and as a result, we will need to expend significant time and expense training the employees we do hire. Competition for individuals with experience designing and manufacturing hydrogen fuel cells is high, and we may not be able to attract, integrate, train, motivate or retain additional highly qualified personnel in the future. The failure to attract, integrate, train, motivate and retain these additional employees could seriously harm our business and prospects.

 We will rely on complex machinery for our operations and production involves a significant degree of risk and uncertainty in terms of operational performance and costs.

 We will rely heavily on complex machinery for our operations and our production will involve a significant degree of uncertainty and risk in terms of operational performance and costs. Our membrane and fuel cell production plant will consist of large-scale machinery combining many components. The production plant components are likely to suffer unexpected malfunctions from time to time and will depend on repairs and spare parts to resume operations, which may not be available when needed. Unexpected malfunctions of the production plant components may significantly affect the intended operational efficiency. Operational performance and costs can be difficult to predict and are often influenced by factors outside of our control, such as, but not limited to, scarcity of natural resources, environmental hazards and remediation, costs associated with decommissioning of machines, labor disputes and strikes, difficulty or delays in obtaining governmental permits, damages or defects in electronic systems, industrial accidents, fire, and seismic activity and natural disasters. Should operational risks materialize, it may result in the personal injury to or death of workers, the loss of production equipment, damage to manufacturing facilities, monetary losses, delays and unanticipated fluctuations in production, environmental damage, administrative fines, increased insurance costs and potential legal liabilities, all which could have a material adverse effect on our business, results of operations, cash flows, financial condition or prospects.

 Our future growth is dependent upon the market's willingness to adopt our hydrogen-powered fuel cell and membrane technology.

 Our growth is highly dependent upon the adoption by the automotive, aerospace, power and energy industries. If the market for our fuel cells and membranes does not develop at the rate or to the extent that we expect, our business, prospects, financial condition and operating results will be harmed. The market for alternative fuel and energy storage systems is still new and is characterized by rapidly changing technologies, price competition, numerous competitors, evolving government regulation and industry standards and uncertain customer demands and behaviors.

 Factors that may influence the adoption of our fuel cell and membrane technology include:

 perceptions about safety, design, performance and cost, especially if adverse events or accidents occur that are linked to the quality or safety of alternative fuel or electric vehicles;

 improvements in the fuel economy of internal combustion engines and battery powered vehicles;

 the availability of service for alternative fuel vehicles;

 volatility in the cost of energy, oil, gasoline and hydrogen;

 government regulations and economic incentives promoting fuel efficiency, alternate forms of energy, and regulations banning internal combustion engines;

 the availability of tax and other governmental incentives to sell hydrogen;

 volatility in the cost of energy, oil, gasoline and hydrogen;

 government regulations and economic incentives promoting fuel efficiency, alternate forms of energy, and regulations banning internal combustion engines;

 the availability of tax and other governmental incentives to sell hydrogen;

 perceptions about and the actual cost of alternative fuel; and

 macroeconomic factors.

 Future product recalls could materially adversely affect our business, prospects, operating results and financial condition.

 Any product recall in the future may result in adverse publicity, damage our brand and materially adversely affect our business, prospects, operating results and financial condition. In the future, we may voluntarily or involuntarily, initiate a recall if any of our fuel cells or membranes prove to be defective. Such recalls involve significant expense and diversion of management attention and other resources, which could adversely affect our brand image in our target markets, as well as our business, prospects, financial condition and results of operations.

 If we are unable to attract and retain key employees and hire qualified management, technical and fuel cell and system engineering personnel, our ability to compete could be harmed.

 Our success depends, in part, on our ability to retain our key personnel. The unexpected loss of or failure to retain one or more of our key employees could adversely affect our business, including our recent turnover in the finance function. Our success also depends, in part, on our continuing ability to identify, hire, attract, train and develop other highly qualified personnel.

 Competition for these employees can be intense, and our ability to hire, attract and retain them depends on our ability to provide competitive compensation. We may not be able to attract, assimilate, develop or retain qualified personnel in the future, and our failure to do so could adversely affect our business, including the execution of our global business strategy. Any failure by our management team to perform as expected may have a material adverse effect on our business, prospects, financial condition and results of operations.

 Increases in costs, disruption of supply or shortage of raw materials could harm our business.

 Once we increase production, we may experience increases in the cost or a sustained interruption in the supply or shortage of raw materials. Any such increase or supply interruption could materially negatively impact our business, prospects, financial condition and operating results. We use various raw materials including precious group metals such as platinum; carbon black; polymer precursors, reactants, and solvents; as well as carbon cloth and carbon fiber paper. The prices for these raw materials fluctuate depending on market conditions and global demand and could adversely affect our business and operating results.

 We are or may be subject to risks associated with strategic alliances or acquisitions.

 We have entered into, and may in the future enter into additional, strategic alliances, including joint ventures or minority equity investments with various third parties to further our business purpose. These alliances could subject us to a number of risks, including risks associated with sharing proprietary information, non-performance by the third party and increased expenses in establishing new strategic alliances, any of which may materially and adversely affect our business. We may have limited ability to monitor or control the actions of these third parties and, to the extent any of these strategic third parties suffers negative publicity or harm to their reputation from events relating to their business, we may also suffer negative publicity or harm to our reputation by virtue of our association with any such third party.

 When appropriate opportunities arise, we may acquire additional assets, products, technologies or businesses that are complementary to our existing business. In addition to possible stockholder approval, we may need approvals and licenses from relevant government authorities for the acquisitions and to comply with any applicable laws and regulations, which could result in increased delay and costs, and may disrupt our business strategy if we fail to do so. Furthermore, acquisitions and the subsequent integration of new assets and businesses into our own require significant attention from our management and could result in a diversion of resources from our existing business, which in turn could have an adverse effect on our operations. Acquired assets or businesses may not generate the financial results we expect. Acquisitions could result in the use of substantial amounts of cash, potentially dilutive issuances of equity securities and exposure to potential unknown liabilities of the acquired business. Moreover, the costs of identifying and consummating acquisitions may be significant.

 We may experience difficulties integrating the operations of acquired companies into our business and in realizing the expected benefits of these acquisitions.

 Acquisitions involve numerous risks, any of which could harm our business and negatively affect our financial condition and results of operations. The success of various strategic acquisitions that the Company may make in the future will depend in part on our ability to realize the anticipated business opportunities from combining their and our operations in an efficient and effective manner. These integration processes could take longer than anticipated and could result in the loss of key employees, the disruption of each company's ongoing businesses, tax costs or inefficiencies, or inconsistencies in standards, controls, information technology systems, procedures and policies, any of which could adversely affect our ability to maintain relationships with customers, employees or other third parties, or our ability to achieve the anticipated benefits of the acquisitions, and could harm our financial performance. If we are unable to successfully or timely integrate the operations of such acquired businesses with our business, we may incur unanticipated liabilities and be unable to realize the revenue growth, synergies and other anticipated benefits resulting from the acquisitions, or fully offset the costs of the acquisition, and our business, results of operations and financial condition could be materially and adversely affected.

 We are subject to substantial regulation and unfavorable changes to, or failure by us to comply with, these regulations could substantially harm our business and operating results.

 Our fuel cells and membranes are subject to substantial regulation under international, federal, state, and local laws. We expect to incur significant costs in complying with these regulations. Regulations related to alternative energy are currently evolving and we face risks associated with changes to these regulations, including but not limited to:

 increased subsidies for corn and ethanol production, which could reduce the operating cost of vehicles that use ethanol or a combination of ethanol and gasoline; and

 increased sensitivity by regulators to the needs of established automobile manufacturers with large employment bases, high fixed costs and business models based on the internal combustion engine, which could lead them to pass regulations that could reduce the compliance costs of such established manufacturers or mitigate the effects of government efforts to promote alternative fuel vehicles. Compliance with changing regulations could be burdensome, time consuming, and expensive. To the extent compliance with new regulations is cost prohibitive, our business, prospects, financial condition and operating results would be adversely affected.

 We face risks associated with our international operations, including unfavorable regulatory, political, tax and labor conditions, which could harm our business.

 We face risks associated with our international operations, including possible unfavorable regulatory, political, tax and labor conditions, which could harm our business. We have international operations in Europe that are subject to the legal, political, regulatory and social requirements and economic conditions in these jurisdictions. We are subject to a number of risks associated with international business activities that may increase our costs, impact our ability to sell our fuel cells and membranes and require significant management attention. These risks include:

 difficulty in staffing and managing foreign operations;

 foreign government taxes, regulations and permit requirements, including foreign taxes that we may not be able to offset against taxes imposed upon us in the U.S., and foreign tax and other laws limiting our ability to repatriate funds to the U.S.;

 fluctuations in foreign currency exchange rates and interest rates;

 increased inflation rates and cost of goods;

 U.S. and foreign government trade restrictions, tariffs and price or exchange controls;

 foreign labor laws, regulations and restrictions;

 changes in diplomatic and trade relationships;

 political instability, natural disasters, war, or events of terrorism;

 the escalation or continuation of armed conflict, hostilities or economic sanctions between countries or regions, including the current conflict between Russia and Ukraine;

 the strength of international economies and economic relations between countries or regions; and

 economic uncertainties and potential disruptions include a slow-down in the general economy.

 If we fail to successfully address these risks, our business, prospects, operating results and financial condition could be materially harmed.

 The unavailability, reduction or elimination of government and economic incentives could have a material adverse effect on our business, prospects, financial condition and operating results.

 Any reduction, elimination or discriminatory application of government subsidies and economic incentives because of policy changes, the reduced need for such subsidies and incentives due to the perceived success of alternative energies or other reasons may result in the diminished competitiveness of the alternative fuel industry generally. This could materially and adversely affect the growth of the alternative fuel automotive markets and our business, prospects, financial condition and operating results.

 While certain tax credits and other incentives for alternative energy production and alternative fuel vehicles have been available in the past, there is no guarantee these programs will be available in the future. If current tax incentives are not available in the future, our financial position could be harmed.

 We may not be able to obtain or agree on acceptable terms and conditions for all or a significant portion of the government grants, loans and other incentives for which we may apply in the future. As a result, our business and prospects may be adversely affected.

 We anticipate continuing to apply for federal and state grants, loans and tax incentives under government programs designed to stimulate the economy and support the production of alternative fuel vehicles and related technologies. We anticipate that in the future there will be new opportunities for us to apply for grants, loans and other incentives from the U.S., state and foreign governments. Our ability to obtain funds or incentives from government sources is subject to the availability of funds under applicable government programs and approval of our applications to participate in such programs. The application process for these funds and other incentives will likely be highly competitive. We cannot assure you that we will be successful in obtaining any of these additional grants, loans and other incentives. If we are not successful in obtaining any of these additional incentives and we are unable to find alternative sources of funding to meet our planned capital needs, our business and prospects could be materially adversely affected.

 Certain members of our management team have limited experience managing a public company.

 Certain members of our management team have limited experience managing a publicly traded company, interacting with public company investors and complying with the increasingly complex laws pertaining to public companies. Our management team may not successfully or efficiently manage the requirements of being a public company subject to significant regulatory oversight and reporting obligations under the federal securities laws and the scrutiny of securities analysts and investors. These new obligations and constituents will require significant attention from our management team and could divert their attention away from the day-to-day management of our business, which could materially and adversely affect our business, financial condition, operating results, cash flows and prospects.

 Obtaining the MIL-STD certification for the Honey Badger and advancing it for U.S. army integration is subject to risks and uncertainty.

 Obtaining the MIL-STD certification for the Honey Badger and advancing it for U.S. army integration is subject to risks and uncertainty and may not be completed on the timeline we expect, or at all.

 Cybersecurity risks and attacks, security incidents, and data breaches could compromise our intellectual property or other proprietary information, could disrupt our electronic infrastructure, operations and manufacturing, and could impact our competitive position, reputation, results of operations, financial condition, and cash flows.

 We rely upon our information technology and electronic infrastructure and its capacity, reliability, and security in connection with various and critical aspects of our business activities. We also rely on our ability to expand and continually update these technologies and related infrastructure in response to the changing needs of our business and the risks presented. We face challenges related to supporting our older technologies and implementing necessary upgrades and the hardening of current technologies. In addition, some of these technologies are managed by third-party service providers and are not under our direct control. If we experience a problem with a critical technology, including during upgrades or new technology implementations, any resulting disruptions could have an adverse effect on our business operations and our performance.

 Our business operations rely upon our electronic infrastructure and that of our third-party vendors, including to handle information and data such as intellectual property, personal information, protected information, financial information and other confidential and proprietary information related to our business and our employees, prospects, customers, suppliers and other business partners. While we maintain certain administrative, technical, and physical safeguards and take preventive and proactive measures to combat known and unknown cybersecurity risks, our work and processes to build out and mature our electronic infrastructure, controls, policies and safeguards is ongoing. There is no assurance that our current controls and our ongoing efforts will be sufficient to eliminate security risks.

 Cyberattacks are increasing in frequency and evolving in nature. We and our third-party providers are at risk of attack through use of increasingly sophisticated methods, including malware, phishing, ransomware, and the deployment of technologies to find and exploit vulnerabilities. Like many organizations, we have been targeted by phishing attacks, for example. Our electronic infrastructure, and information technology systems maintained by our third-party providers, have been in the past, and may be in the future, subjected to attempts to gain unauthorized access, disable, destroy, maliciously control or cause other business disruptions. In some cases, it is difficult to anticipate or to detect immediately such incidents and any damage caused. While these types of incidents have not had a material impact on our business to-date, future incidents involving access to or improper use of our systems, or those of our third-parties, could compromise confidential, proprietary or otherwise sensitive information.

 In addition, cyberattacks could negatively impact our reputation and our competitive position and could result in litigation with third parties, regulatory action, significant remediation costs, and loss of business and customers relationships, any of which could adversely impact our business, our financial condition, and our operating results. Although we maintain some insurance coverage, we cannot be certain that coverage would apply to cyber risks, that it may be adequate for liabilities incurred, or that any insurer will not accept or deny coverage of future claims.

 We may experience problems with the operation of our electronic infrastructure or the technology systems of third parties on which we rely, as well as the development and deployment of new electronic infrastructure, that could adversely affect, or even disrupt, all or a portion of our operations until resolved. In addition, as a result of the COVID-19 pandemic a large percentage of our salaried employees continue to work remotely full or part-time. This remote working environment may pose a heightened risk for security breaches or other disruptions of our information technology environment.

 Our global operations are subject to data privacy laws and regulations that impose significant compliance costs and create reputational and legal risk.

 Due to the international scope of our operations, we may be subject to a complex system of regulatory requirements regarding data privacy, such as the European Union General Data Protection Regulation and California's Consumer Privacy Act and its amendments.

 Our numerous foreign operations are governed by laws, rules and business practices that differ from those of the U.S. We cannot predict now our future data privacy risks or the nature, scope or effect of future regulatory requirements to which our operations might be subject or the manner in which existing laws might be administered or interpreted.

 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 the Company's current and projected business operations and its 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 (SVB) was closed by the California Department of Financial Protection and Innovation, which appointed the Federal Deposit Insurance Corporation (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 indicated 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. Although we are not a borrower or party to any such instruments with SVB, Signature or any other financial institution currently in receivership, if any of our lenders or counterparties to any such instruments were to be placed into receivership, we may be unable to access such funds. In addition, if any of our customers, suppliers or other 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.

 Failure of our information technology systems could significantly disrupt the operation of our business.

 Our business increasingly depends on the use of information technologies, which means that certain key areas such as research and development, production and sales are to a large extent dependent on our information systems or those of third-party providers. Our ability to execute our business plan and to comply with regulatory requirements with respect to data control and data integrity, depends, in part, on the continued and uninterrupted performance of our information technology systems, or IT systems and the IT systems supplied by third-party service providers. These systems are vulnerable to damage from a variety of sources, including telecommunications or network failures, malicious human acts and natural disasters. Moreover, despite network security and backup measures, some of our servers are potentially vulnerable to physical or electronic break-ins, computer viruses and similar disruptive problems. Despite the precautionary measures we and our third-party service providers have taken to prevent unanticipated problems that could affect our IT systems, sustained or repeated system failures or problems arising during the upgrade of any of our IT systems that interrupt our ability to generate and maintain data, and in particular to operate our proprietary technology platform, could adversely affect our ability to operate our business.

 Risks Related to Ownership of Our Common Stock and Warrants

 NASDAQ may delist our securities from trading on its exchange, which could limit investors' ability to make transactions in our securities and subject us to additional trading restrictions.

 Our securities, including common stocks and warrants, are currently listed on the Nasdaq Capital Market. However, we cannot assure you that our securities will continue to be listed on the Nasdaq Capital Market in the future. In order to continue listing our securities on the Nasdaq Capital Market, we must maintain certain financial, distribution and stock price levels. Generally, we must maintain a minimum amount in stockholders' equity (generally $2,500,000) and a minimum number of holders of our securities (generally 300 public holders). Additionally, we are required to demonstrate compliance with other Nasdaq's continued listing requirements in order to continue to maintain the listing of our securities on the Nasdaq Capital Market.

 In the past, we have received deficiency letters from Nasdaq regarding our failure to satisfy continued listing requirements and are currently not in compliance with all such requirements. On May 24, 2023, the Company received a letter from the Listing Qualifications Staff (the "Staff") of Nasdaq Stock Market LLC ("Nasdaq") indicating that the bid price of the Common Stock had closed below $1.00 per share for 30 consecutive business days and, as a result, the Company was not in compliance with Nasdaq Listing Rule 5550(a)(2), which sets forth the minimum bid price requirement for continued listing on the Nasdaq Capital Market (the "Minimum Bid Requirement").

 On May 13, 2024, the Company effectuated the Reverse Stock Split, and our Common Stock began trading on a split-adjusted basis on the Nasdaq Capital Market at the opening of trading on May 14, 2024, in an effort to comply with the Minimum Bid Requirement. The Company has since received confirmation from Nasdaq that it has met the Minimum Bid Requirement.

 On April 17, 2024, we received a letter from Nasdaq notifying the Company that it is not in compliance with the periodic reporting requirements for continued listing set forth Nasdaq Listing Rule 5250(c)(1) (the "Timely Report Requirement") due to the fact that this Annual Report on Form 10-K was not filed by the required due date of March 31, 2024 (the "10-K Delinquency Letter"). Additionally, on May 24, 2024, we received a letter from Nasdaq notifying the Company that it is not in compliance with the periodic requirements for continued listing set forth Nasdaq Listing Rule 5250(c)(1) due to the fact that the Company did not file its Quarterly Report on Form 10-Q for the quarter ended March 31, 2024 (the "First Quarter 10-Q") by the required due date of May 14, 2024 (the "Q1 10-Q Delinquency Letter"). Further, on November 22, 2024, we received a letter from Nasdaq notifying the Company that it is not in compliance with the Timely Reporting Requirement due to the fact that the Company did not file its Quarterly Report on Form 10-Q for the quarter ended September 30, 2024 (the "Third Quarter 10-Q") by the required due date of November 20, 2024 (the "Q2 10-Q Delinquency Letter"). The Company submitted compliance plans to Nasdaq setting forth its plan to file both this Annual Report on Form 10-K, the First Quarter 10-Q and the Third Quarter 10-Q. The Company filed its Annual Report on Form 10-K on August 13, 2024, its First Quarter 10-Q on October 15, 2024 and its Third Quarter 10-Q on December 27, 2024.

 Additionally, on October 18, 2024, we received a letter from Nasdaq notifying the Company that since the Company's Form 10-Q for the period ended June 30, 2024, reported stockholders' equity of ($2,879,000), and as of the date of such letter the Company did not meet the alternatives of market value of listed securities or net income from continuing operations, the Company is no longer in compliance with Nasdaq's Listing Rule requiring the Company to maintain a minimum of $2,500,000 in stockholders' equity for continued listing. The Company submitted a compliance plan and supplement to Nasdaq setting forth its plan to increase its stockholders' equity and is working to regain compliance with this requirement.

 We cannot assure you that we will be able to meet Nasdaq's continued listing requirements at all times. If Nasdaq delists our securities from trading on its exchange and we are not able to list our securities on another national securities exchange, we expect our securities could be quoted on an over-the-counter market. If this were to occur, we could face significant material adverse consequences, including:

 a limited availability of market quotations for its securities;

 reduced liquidity for its securities;

 a determination that our common stock is a "penny stock" which will require brokers trading in the common stock to adhere to more stringent rules and possibly result in a reduced level of trading activity in the secondary trading market for our securities;

 a limited amount of news and analyst coverage; and

 a decreased ability to issue additional securities or obtain additional financing in the future.

 If our common stock were delisted and determined to be a "penny stock," a broker-dealer may find it more difficult to trade our common stock and an investor may find it more difficult to acquire or dispose of our common stock in the secondary market.

 If our common stock were removed from listing with The Nasdaq Capital Market, it may be subject to the so-called "penny stock" rules. The SEC has adopted regulations that define a "penny stock" to be any equity security that has a market price per share of less than $5.00, subject to certain exceptions, such as any securities listed on a national securities exchange, which is the exception on which we currently rely. For any transaction involving a "penny stock," unless exempt, the rules impose additional sales practice requirements on broker-dealers, subject to certain exceptions. If our common stock were delisted and determined to be a "penny stock," a broker-dealer may find it more difficult to trade our common stock and an investor may find it more difficult to acquire or dispose of our common stock on the secondary market.

 Delaware law and our second amended and restated certificate of incorporation and second amended and restated bylaws contain certain provisions, including anti-takeover provisions, that limit the ability of stockholders to take certain actions and could delay or discourage takeover attempts that stockholders may consider favorable.

 Our second amended and restated certificate of incorporation and our amended and restated bylaws, and the Delaware General Corporation Law ("DGCL"), contain provisions that could have the effect of rendering more difficult, delaying, or preventing an acquisition deemed undesirable by our board of directors and therefore depress the trading price of our common stock. These provisions could also make it difficult for stockholders to take certain actions, including electing directors or taking other corporate actions, including effecting changes in our management. Among other things, our second amended and restated certificate of incorporation and amended and restated bylaws include provisions regarding:

 a classified board of directors with three-year staggered terms, which could delay the ability of stockholders to change the membership of a majority of our board of directors;

 the ability of our board of directors to issue shares of preferred stock, including "blank check" preferred stock and to determine the price and other terms of those shares, including preferences and voting rights, without stockholder approval, which could be used to significantly dilute the ownership of a hostile acquirer;

 the limitation of the liability of, and the indemnification of, our directors and officers;

 the exclusive right of our board of directors to elect a director to fill a vacancy created by the expansion of our board of directors or the resignation, death or removal of a director, which prevents stockholders from being able to fill vacancies on our board of directors;

 the requirement that directors may only be removed from our board of directors for cause;

 a prohibition on stockholder action by written consent, which forces stockholder action to be taken at an annual or special meeting of stockholders and could delay the ability of stockholders to force consideration of a stockholder proposal or to take action, including the removal of directors;

 the requirement that a special meeting of stockholders may be called only by our board of directors, the chairperson of our board of directors, our chief executive officer or our president (in the absence of a chief executive officer), which could delay the ability of stockholders to force consideration of a proposal or to take action, including the removal of directors;

 controlling the procedures for the conduct and scheduling of board of directors and stockholder meetings;

 the requirement for the affirmative vote of holders of at least 65% of the voting power of all of the then outstanding shares of the voting stock, voting together as a single class, to amend, alter, change or repeal any provision of the second amended and restated certificate of incorporation or amended and restated bylaws, which could preclude stockholders from bringing matters before annual or special meetings of stockholders and delay changes in our board of directors and also may inhibit the ability of an acquirer to effect such amendments to facilitate an unsolicited takeover attempt;

 the ability of our board of directors to amend the amended and restated bylaws, which may allow our board of directors to take additional actions to prevent an unsolicited takeover and inhibit the ability of an acquirer to amend the amended and restated bylaws to facilitate an unsolicited takeover attempt; and

 advance notice procedures with which stockholders must comply to nominate candidates to our board of directors or to propose matters to be acted upon at a stockholders' meeting, which could preclude stockholders from bringing matters before annual or special meetings of stockholders and delay changes in our board of directors and also may discourage or deter a potential acquirer from conducting a solicitation of proxies to elect the acquirer's own slate of directors or otherwise attempting to obtain control of surviving entity.

 These provisions, alone or together, could delay or prevent hostile takeovers and changes in control or changes in our board of directors or management.

 In addition, as a Delaware corporation, we will be subject to provisions of Delaware law, including Section 203 of the DGCL, which may generally prohibit certain stockholders holding 15% or more of our outstanding capital stock from engaging in certain business combinations with us for a specified period of time unless certain conditions are met.

 Any provision of the second amended and restated certificate of incorporation, amended and restated bylaws or Delaware law that has the effect of delaying or preventing a change in control could limit the opportunity for stockholders to receive a premium for their shares of our capital stock and could also affect the price that some investors are willing to pay for our common stock.

 Our second amended and restated certificate of incorporation designates a state or federal court located within the State of Delaware as the exclusive forum for substantially all disputes between us and our stockholders, and also provide that the federal district courts will be the exclusive forum for resolving any complaint asserting a cause of action arising under the Securities Act, each of which could limit the ability of our stockholders to choose the judicial forum for disputes with us or our directors, officers, or employees.

 The second amended and restated certificate of incorporation provides that, unless we consent in writing to the selection of an alternative forum, the sole and exclusive forum for (1) any derivative action or proceeding brought on its behalf, (2) any action asserting a claim of breach of a fiduciary duty owed by any of its directors, officers, or other employees to us or our stockholders, (3) any action arising pursuant to any provision of the Delaware General Corporation Law, or the second amended and restated certificate of incorporation or the amended and restated bylaws or (4) any other action asserting a claim that is governed by the internal affairs doctrine shall be the Court of Chancery of the State of Delaware (or, if the Court of Chancery does not have jurisdiction, the federal district court for the District of Delaware), in all cases subject to the court having jurisdiction over indispensable parties named as defendants. The second amended and restated certificate of incorporation also provides that the federal district courts of the U.S. will be the exclusive forum for resolving any complaint asserting a cause of action arising under the Securities Act. The exclusive forum provision is applicable to the fullest extent permitted by applicable law, subject to certain exceptions. Section 27 of the Exchange Act creates exclusive federal jurisdiction over all suits brought to enforce any duty or liability created by the Exchange Act or the rules and regulations thereunder. As a result, the exclusive forum provision will not apply to suits brought to enforce any duty or liability created by the Exchange Act or any other claim for which the federal courts have exclusive jurisdiction. We note, however, that there is uncertainty as to whether a court would enforce this provision and that investors cannot waive compliance with the federal securities laws and the rules and regulations thereunder. Section 22 of the Securities Act creates concurrent jurisdiction for state and federal courts over all suits brought to enforce any duty or liability created by the Securities Act or the rules and regulations thereunder.

 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 this provision. This exclusive-forum provision 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 exclusive-forum provision be inapplicable or unenforceable in an action, we may incur additional costs associated with resolving the dispute in other jurisdictions, which could harm its results of operations.

 An active market for our securities may not develop, which would adversely affect the liquidity and price of our securities.

 The price of our securities may vary significantly due to factors specific to our business as well as to general market or economic conditions. Furthermore, an active trading market for our securities may never develop or, if developed, it may not be sustained. You may be unable to sell your securities unless a market can be established and sustained.

 Our common stock price may change significantly and you could lose all or part of your investment as a result.

 The trading price of our common stock is likely to be volatile. The stock market recently has experienced extreme volatility. This volatility often has been unrelated or disproportionate to the operating performance of particular companies. You may not be able to resell your shares of our common stock at an attractive price due to a number of factors such as those listed in " Risk Factors Relating to Our Operations and Business " and the following:

 results of operations that vary from the expectations of securities analysts and investors;

 results of operations that vary from our competitors;

 changes in expectations as to our future financial performance, including financial estimates and investment recommendations by securities analysts and investors;

 declines in the market prices of stocks generally;

 strategic actions by us or our competitors;

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

 any significant change in our management;

 changes in general economic or market conditions or trends in our industry or markets;

 changes in business or regulatory conditions, including new laws or regulations or new interpretations of existing laws or regulations applicable to our business;

 future sales of our common stock or other securities;

 investor perceptions of the investment opportunity associated with our common stock relative to other investment alternatives;

 the public's response to press releases or other public announcements by us or third parties, including our filings with the SEC;

 litigation involving us, our industry, or both, or investigations by regulators into our operations or those of our competitors;

 guidance, if any, that we provide to the public, any changes in this guidance or our failure to meet this guidance;

 the development and sustainability of an active trading market for our common stock;

 actions by institutional or activist stockholders;

 changes in accounting standards, policies, guidelines, interpretations or principles; and

 other events or factors, including those resulting from pandemics, natural disasters, war, acts of terrorism or responses to these events.

 These broad market and industry fluctuations may adversely affect the market price of our common stock, regardless of our actual operating performance. In addition, price volatility may be greater if the public float and trading volume of our common stock is low.

 In the past, following periods of market volatility, stockholders have instituted securities class action litigation. If we were involved in securities litigation, it could have a substantial cost and divert resources and the attention of executive management from our business regardless of the outcome of such litigation.

 Because there are no current plans to pay cash dividends on our common stock for the foreseeable future, you may not receive any return on investment unless you sell your common stock at a price greater than what you paid for it.

 We intend to retain future earnings, if any, for future operations, expansion and debt repayment and there are no current plans to pay any cash dividends for the foreseeable future. The declaration, amount and payment of any future dividends on shares of common stock will be at the sole discretion of the board of directors. The board of directors may take into account general and economic conditions, our financial condition and results of operations, our available cash and current and anticipated cash needs, capital requirements, contractual, legal, tax and regulatory restrictions, implications of the payment of dividends by us to our stockholders or by its subsidiaries to it and such other factors as the board of directors may deem relevant. As a result, you may not receive any return on an investment in our common stock unless you sell your common stock for a price greater than that which you paid for it.

 Our stockholders may experience dilution in the future.

 The percentage of shares of our common stock owned by current stockholders may be diluted in the future because of equity issuances for acquisitions, capital market transactions or otherwise, including, without limitation, equity awards that we may grant to its directors, officers and employees, or exercise of warrants. Such issuances may have a dilutive effect on our earnings per share, which could adversely affect the market price of our common stock.

 If securities or industry analysts do not publish research or reports about our business, if they change their recommendations regarding our common stock or if our operating results do not meet their expectations, our common stock price and trading volume could decline.

 The trading market for our common stock will depend in part on the research and reports that securities or industry analysts publish about us or our businesses. If no securities or industry analysts commence coverage of us or our business, the trading price for our common stock could be negatively impacted. In the event securities or industry analysts initiate coverage, if one or more of the analysts who cover us downgrade our securities or publish unfavorable research about our businesses, or if our operating results do not meet analyst expectations, the trading price of our common stock would likely decline. If one or more of these analysts cease coverage of us or fail to publish reports on us regularly, demand for our common stock could decrease, which might cause our common stock price and trading volume to decline.

 As a public company, we are subject to additional laws, regulations and stock exchange listing standards, which impose additional costs on us and may strain our resources and divert our management's attention.

 Advent previously operated on a private basis and following the Business Combination it became a wholly-owned subsidiary of a public company that is subject to the reporting requirements of the Exchange Act, the Sarbanes-Oxley Act, the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010, the listing requirements of Nasdaq and other applicable securities laws and regulations. Compliance with these laws and regulations will increase our legal and financial compliance costs and make some activities more difficult, time-consuming or costly, which may strain our resources or divert management's attention.

 We may redeem unexpired public warrants prior to their exercise at a time that is disadvantageous for warrant holders.

 We will have the ability to redeem outstanding public warrants at any time after they become exercisable and prior to their expiration, at a price of $0.01 per warrant, provided that the last reported sales price of our common stock equals or exceeds $540.00 per share (as adjusted for stock splits, stock dividends, reorganizations, recapitalizations and the like) for any 20 trading days within a 30 trading-day period ending on the third trading day prior to the date we send the notice of redemption to the warrant holders. If and when the public warrants become redeemable by us, we may exercise our redemption right when the registration statement to which this prospectus forms a part comes into effect with respect to the shares of common stock underlying such warrants. Redemption of the outstanding public warrants could force you to: (1) exercise your warrants and pay the related exercise price at a time when it may be disadvantageous for you to do so; (2) sell your warrants at the then-current market price when you might otherwise wish to hold your warrants; or (3) accept the nominal redemption price which, at the time the outstanding public warrants are called for redemption, is likely to be substantially less than the market value of your warrants. None of the placement warrants or working capital warrants will be redeemable by us for cash so long as they are held by our sponsor or its permitted transferees.

 Changes in accounting standards and subjective assumptions, estimates and judgments by management related to complex accounting matters could significantly affect our financial condition and results of operations.

 Accounting principles and related pronouncements, implementation guidelines and interpretations we apply to a wide range of matters that are relevant to our business, including, but not limited to, revenue recognition, leases and stock-based compensation, are complex and involve subjective assumptions, estimates and judgments by our management. Changes in accounting pronouncements or their interpretation or changes in underlying assumptions, estimates or judgments by our management could significantly change our reported or expected financial performance.

 The exercise of Warrants for our common stock would increase the number of shares eligible for future resale in the public market and result in dilution to our stockholders.

 As of June 2, 2025, we had Warrants to purchase an aggregate of 878,985 shares of our common stock outstanding. To the extent remaining Warrants are exercised, additional shares of common stock will be issued, which will result in dilution to the then-existing holders of common stock and increase the number of shares eligible for resale in the public market. Sales of substantial numbers of such shares in the public market or the fact that such Warrants may be exercised could adversely affect the market price of our common stock.

 The valuation of our Warrants could increase the volatility in our net income (loss) in our consolidated statements of earnings (loss).

 The change in fair value of our Warrants is the result of changes in stock price and Warrants outstanding at each reporting period. The Change in Fair Value of Warrant Liabilities represents the mark-to-market fair value adjustments to the outstanding Warrants issued in connection with the initial public offering of ACMI and the concurrent private placement. Significant changes in our stock price or number of Warrants outstanding may adversely affect our net income (loss) in our consolidated statements of earnings (loss).

 Changes in US trade policy, including the imposition of tariffs and the resulting consequences, may have a material adverse impact on our business and results of operations.

 The US government has indicated its intent to adopt a new approach to trade policy and in some cases to renegotiate, or potentially terminate, certain existing bilateral or multi-lateral trade agreements. It has also initiated or is considering the imposition of tariffs on certain foreign goods. Changes in US trade policy could result in one or more U.S. trading partners adopting responsive trade policies making it more difficult or costly for us to export our products to those countries. These measures could also result in increased costs for goods imported into the United States. This in turn could require us to increase prices to our customers which may reduce demand, or, if we are unable to increase prices, result in lowering our margin on products sold.

 We cannot predict future trade policy or the terms of any renegotiated trade agreements and their impact on our business. The adoption and expansion of trade restrictions, the occurrence of a trade war, or other governmental action related to tariffs or trade agreements or policies has the potential to adversely impact demand for our products, our costs, our customers, our suppliers, and the US economy, which in turn could adversely impact our business, financial condition and results of operations.

 Risks Related to Our Intellectual Property

 Our ability to protect our intellectual property and proprietary technology is uncertain.

 We rely primarily on patent, copyright, trademark and trade secret laws, as well as confidentiality and non- disclosure agreements and other methods, to protect our proprietary technologies and know-how. As of October 11, 2024, we owned 108 issued patents (38 domestic and 70 foreign), 35 pending patent applications (13 domestic and 22 foreign), 45 registered trademarks (5 domestic and 40 foreign) and 8 pending trademark applications (3 domestic and 5 foreign).

 We have applied for patent protection relating to certain existing and proposed products and processes. While we generally apply for patents in those countries where we intend to make, have made, use, or sell patented products, we may not accurately predict all the countries where patent protection will ultimately be desirable. If we fail to timely file a patent application in any such country, we may be precluded from doing so later. Furthermore, we cannot assure you that any of our patent applications will be approved. The rights granted to us under our patents, including prospective rights sought in our pending patent applications, may not be meaningful or provide us with any commercial advantage. In addition, those rights could be opposed, contested, or circumvented by our competitors or be declared invalid or unenforceable in judicial or administrative proceedings. The failure of our patents to adequately protect our technology might make it easier for our competitors to offer the same or similar products or technologies. Competitors may be able to design around our patents or develop products that provide outcomes which are comparable to ours without infringing on our intellectual property rights. Due to differences between foreign and U.S. patent laws, our patented intellectual property rights may not receive the same degree of protection in foreign countries as they would in the United States. Even if patents are granted outside the United States, effective enforcement in those countries may not be available. Since most of our issued patents are for the United States only, we lack a corresponding scope of patent protection in other countries. In countries where we do not have significant patent protection, we may not be able to stop a competitor from marketing products in such countries that are the same as or similar to our product.

 We plan to rely on our trademarks, trade names and brand names to distinguish our product from the products of our competitors and have registered or applied to register many of these trademarks. We cannot assure you that our trademark applications will be approved. Third parties may also oppose our trademark applications, or otherwise challenge our use of the trademarks. In the event that our trademarks are successfully challenged, we could be forced to rebrand our product, which could result in loss of brand recognition, and could require us to devote resources to advertising and marketing new brands. Further, we cannot assure you that competitors will not infringe upon our trademarks, or that we will have adequate resources to enforce our trademarks.

 We also rely on trade secrets, know-how, and technology, which are not protected by patents, to maintain our competitive position. We try to protect this information by entering into confidentiality and intellectual property assignment agreements with parties that develop intellectual property for us and/or have access to it, such as our officers, employees, consultants, contract manufacturers and advisors. However, in the event of unauthorized use or disclosure or other breaches of such agreements, we may not be provided with meaningful protection for our trade secrets or other proprietary information. In addition, our trade secrets may otherwise become known or be independently discovered by competitors. To the extent that our commercial partners, collaborators, employees, and consultants use intellectual property owned by others in their work for us, disputes may arise as to the rights in related or resulting know-how and inventions. If any of our trade secrets, know-how or other technologies not protected by a patent were to be disclosed to or independently developed by a competitor, our business, financial condition, and results of operations could be materially adversely affected.

 In the future, we may enter into licensing agreements to maintain our competitive position. If we enter into in-bound intellectual property license agreements, we may not be able to fully protect the licensed intellectual property rights or maintain those licenses. Future licensors could retain the right to prosecute and defend the intellectual property rights licensed to us, in which case we would depend on the ability of our licensors to obtain, maintain, and enforce intellectual property protection for the licensed intellectual property. These licensors may determine not to pursue litigation against other companies or may pursue such litigation less aggressively than we would. Further, entering into such license agreements could impose various diligence, commercialization, royalty, or other obligations on us. Future licensors may allege that we have breached our license agreement with them, and accordingly seek damages or to terminate our license, which could adversely affect our competitive business position and harm our business prospects.

 If a competitor infringes upon one of our patents, trademarks, or other intellectual property rights, enforcing those patents, trademarks, and other rights may be difficult and time consuming. Even if successful, litigation to defend our patents and trademarks against challenges or to enforce our intellectual property rights could be expensive and time consuming and could divert management's attention from managing our business. Moreover, we may not have sufficient resources to defend our patents or trademarks against challenges or to enforce our intellectual property rights. In addition, if third parties infringe any intellectual property that is not material to the products that we make, have made, use, or sell, it may be impractical for us to enforce this intellectual property against those third parties.

 We may need to defend ourselves against patent or trademark infringement claims, which may be time-consuming and cause us to incur substantial costs.

 Companies, organizations or individuals, including our competitors, may own or obtain patents, trademarks or other proprietary rights that would prevent or limit our ability to make, use, develop, license or sell our fuel cell and membrane technologies, which could make it more difficult for us to operate our business. We may receive inquiries from patent or trademark owners inquiring whether we infringe their proprietary rights. Companies owning patents or other intellectual property rights relating to fuel cells may allege infringement of such rights. In response to a determination that we have infringed upon a third party's intellectual property rights, we may be required to do one or more of the following:

 cease development, sales, license or use of fuel cells or membranes that incorporate the asserted intellectual property;

 pay substantial damages;

 obtain a license from the owner of the asserted intellectual property right, which license may not be available on reasonable terms or at all; or

 redesign one or more aspects or systems of our fuel cells or membranes.

 A successful claim of infringement against us could materially adversely affect our business, prospects, operating results and financial condition. Any litigation or claims, whether valid or invalid, could result in substantial costs and diversion of resources.

 We also plan to license patents and other intellectual property from third parties and we may face claims that our use of this in-licensed technology infringes the intellectual property rights of others. In such cases, we will seek indemnification from our licensors. However, our rights to indemnification may be unavailable or insufficient to cover our costs and losses.

 Our business may be adversely affected if we are unable to protect our intellectual property rights from unauthorized use by third parties.

 Failure to adequately protect our intellectual property rights could result in our competitors offering similar products, potentially resulting in the loss of some of our competitive advantage and a decrease in our revenue, which would adversely affect our business, prospects, financial condition and operating results. Our success depends, at least in part, on our ability to protect our core technology and intellectual property. To accomplish this, we will rely on a combination of patents, trade secrets (including know-how), employee and third-party nondisclosure agreements, copyright, trademarks, intellectual property licenses and other contractual rights to establish and protect our rights in our technology.

 The protection of our intellectual property rights will be important to our future business opportunities. However, the measures we take to protect our intellectual property from unauthorized use by others may not be effective for various reasons, including the following:

 any patent applications we submit may not result in the issuance of patents;

 the scope of our issued patents may not be broad enough to protect our proprietary rights;

 our issued patents may be challenged and/or invalidated by our competitors;

 the costs associated with enforcing patents, confidentiality and invention agreements or other intellectual property rights may make aggressive enforcement impracticable;

 current and future competitors may circumvent our patents; and

 our in-licensed patents may be invalidated, or the owners of these patents may breach our license arrangements.

 Patent, trademark, and trade secret laws vary significantly throughout the world. Some foreign countries do not protect intellectual property rights to the same extent as do the laws of the U.S. Further, policing the unauthorized use of our intellectual property in foreign jurisdictions may be difficult. Therefore, our intellectual property rights may not be as strong or as easily enforced outside of the U.S.

 Our patent applications may not issue as patents, which may have a material adverse effect on our ability to prevent others from commercially exploiting products similar to ours.

 We cannot be certain that we are the first inventor of the subject matter to which we have filed a particular patent application, or if we are the first party to file such a patent application. If another party has filed a patent application to the same subject matter as we have, we may not be entitled to the protection sought by the patent application. Further, the scope of protection of issued patent claims is often difficult to determine. As a result, we cannot be certain that the patent applications that we file will issue, or that our issued patents will afford protection against competitors with similar technology. In addition, our competitors may design around our issued patents, which may adversely affect our business, prospects, financial condition or operating results.

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

 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. Competitors may use our technologies in jurisdictions where we have not obtained patent protection to develop their own products and may also 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 product 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 emerging technologies, 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, whether or not successful, 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.

 If we are unable to protect the confidentiality of our trade secrets, our business and competitive position could be harmed.

 In addition to patent protection, we also rely upon copyright and trade secret protection, as well as non-disclosure agreements and invention assignment agreements with our employees, consultants, contract manufacturers and third parties, to protect our confidential and proprietary information. In addition to contractual measures, we try to protect the confidential nature of our proprietary information using commonly accepted physical and technological security measures. Such measures may not, for example, in the case of misappropriation of a trade secret by an employee or third party with authorized access, provide adequate protection for our proprietary information. Our security measures may not prevent an employee or consultant from misappropriating our trade secrets and providing them to a competitor, and recourse we take against such misconduct may not provide an adequate remedy to protect our interests fully. Unauthorized parties may also attempt to copy or reverse engineer certain aspects of our product that we consider proprietary. Enforcing a claim that a party illegally disclosed or misappropriated a trade secret can be difficult, expensive, and time-consuming, and the outcome is unpredictable. Even though we use commonly accepted security measures, trade secret violations are often a matter of state law, and the criteria for protection of trade secrets can vary among different jurisdictions. In addition, trade secrets may be independently developed by others in a manner that could prevent legal recourse by us. If any of our confidential or proprietary information, such as our trade secrets, were to be disclosed or misappropriated, or if any such information was independently developed by a competitor, our business and competitive position could be harmed.

 Third parties may assert that our employees or consultants have wrongfully used or disclosed confidential information or misappropriated trade secrets.

 We employ individuals who previously worked with other companies, including our competitors or potential competitors. Although we try to ensure that our employees and consultants do not use the proprietary information or know-how of others in their work for us, we may be subject to claims that we or our employees, consultants or independent contractors have inadvertently or otherwise used or disclosed intellectual property, including trade secrets or other proprietary information, of a former employer or other third party. Litigation may be necessary to defend against these claims. If we fail in defending any such claims or settling those claims, in addition to paying monetary damages or a settlement payment, we may lose valuable intellectual property rights or personnel. Even if we are successful in defending against such claims, litigation could result in substantial costs and be a distraction to management and other employees.

 Item 1B.

 Unresolved Staff Comments.

 None.

 Item 1C.

 Cybersecurity

 Risk Management and Strategy

 We
have established policies and processes for assessing, identifying, and managing material risks from cybersecurity threats, and have
integrated these processes into our overall risk management systems and processes. We routinely assess material risks from cybersecurity
threats, including any potential unauthorized 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.

 We conduct risk assessments at least annually to identify cybersecurity threats. These risk assessments include identifying reasonably foreseeable potential internal and external risks, the likelihood of occurrence and any potential damage that could result from such risks, and the sufficiency of existing policies, procedures, systems, controls and other safeguards we have put in place to manage such risks. Our risk management process also encompasses cybersecurity risks associated with the use of our major third-party vendors and service providers.

 Following these risk assessments, we design, implement, and maintain reasonable safeguards to minimize the identified risks; reasonably address any identified gaps in existing safeguards; update existing safeguards as necessary; and monitor the effectiveness of our safeguards. We believe we have allocated adequate resources related to our cybersecurity risk management processes and have designated our Director of Global IT with the responsibility of managing the cybersecurity risk assessment and mitigation process.

 As part of our overall risk management program, we provide training to employees in high risk areas on cybersecurity and have distributed standard operating procedures to all employees subsequent to this filing. For additional information regarding whether any risks from cybersecurity threats, including as a result of any previous cybersecurity incidents, have materially affected or are reasonably likely to materially affect our company, including our business strategy, results of operations, or financial condition, please refer to Item 1A, "Risk Factors," in this annual report on Form 10-K, including the risk factors entitled "Our internal computer systems, or those of our CROs or other contractors or consultants, may fail or suffer security breaches, which could result in a material disruption of our product development programs," "Our proprietary information, or that of our customers, suppliers and business partners, may be lost or we may suffer security breaches," and "Failure of our information technology systems could significantly disrupt the operation of our business.

 Governance

 One of the key functions of our Board of Directors is informed oversight of our risk management process, including risks arising from cybersecurity threats. Our Board of Directors is responsible for oversight of the monitoring and strategic risk assessments, and our executive officers are responsible for the day-to-day management, monitoring and reporting to our Board of Directors the material risks we face.

 Our Director of Global IT is primarily responsible for assessing and managing material risks from cybersecurity threats on a day-to-day basis.

 Item 2.

 Properties.

 Our principal office is located at 5637 La Ribera St., Suite A, Livermore, CA 94550. We also lease approximately 3,400 square feet of laboratory space in Patras, Greece, approximately 1,000 square feet of office space in Athens, Greece, and approximately 800 square feet of office space in Kozani, Greece.

 We believe that all our properties have been adequately maintained, are generally in good condition, and are suitable and adequate for our business.

 Item 3.

 Legal Proceedings.

 From time to time, we may become involved in various lawsuits and legal proceedings which arise in the ordinary course of business. However, litigation is subject to inherent uncertainties, and an adverse result in these or other matters may arise from time to time that may harm our business.

 On May 9, 2025, Chris Kaskavelis ("Kaskavelis"), a former employee of Advent SA, filed a claim against the Company's wholly owned subsidiary in Greece, Advent SA, before the Athens First Instance Court (LABOR CLAIMS). A hearing is on the claim is scheduled for October 20, 2025. In connection with the claim, Kaskavelis alleges that Advent should pay him the following amounts: (1) 107,194.90 for unpaid wages, (2) 612,206.40 for unpaid severance, (3) 50,000 for "moral damages" and (4) related court expenses stemming from the lawsuit. The Company denies the Kaskavelis claims as they are unsubstantiated and without merit as he was terminated by the Company for cause per the terms of his employment agreement. Notwithstanding the same, and as a contingency, the Company has accrued for the unpaid wages portion of his claim in the amount of 107,194.90 ($124,000). The Company believes that the remainder of the Kaskavelis claims are wholly without merit and intends to defend itself vigorously in these proceedings, although we cannot accurately predict the ultimate outcome of this matter.

 On August 16, 2024, the Company was informed that an arbitration decision and award was decided in favor of F.E.R. fischer Edelstahlrohre GmbH ("F.E.R."), pursuant to the arbitration provisions of the Share Purchase Agreement dated June 25, 2021, whereby the Company acquired SerEnergy and FES on August 31, 2021. The arbitration was held in Frankfurt am Main, Germany in accordance with the Arbitration Rules of the German Arbitration Institute. The award in favor of F.E.R. is in the amount of approximately 4.5 million euro. The Company appealed the decision and instructed its counsel to file a motion with the Higher Regional Court of Frankfurt to set aside the arbitral award. In February 2025, the parties met to discuss the possibility of a settlement and the framework for such a settlement, but there can be no guaranty that the parties will be able to finalize an agreement, and at this time, the Company cannot accurately predict the outcome of this matter.

 By letter dated September 14, 2023, a purported shareholder of the Company made a demand to inspect the Company's books and records pursuant 8 Del. C. § 220 ("Demand"). The Demand purported to request access to books and records of the Company and its predecessor, AMCI Acquisition Corp. ("AMCI"), to investigate possible alleged breaches of fiduciary duty by AMCI's board of directors and officers in connection with its merger with the Company on February 4, 2021. As of May 24, 2024, the purported shareholder entered into a tolling agreement with the Company and the former directors of AMCI that tolled all claims for the period January 29, 2024 through June 30, 2024. On June 5, 2024, the purported shareholder filed a putative class action complaint ("Complaint") on behalf of in the Delaware Court of Chancery alleging claims of breach of fiduciary duty and unjust enrichment in connection with the SPAC transaction against former officers and directors of AMCI. The Company is not named as a defendant in the Complaint. The Company is not aware as to whether the Complaint has been served on the defendants.

 Other than the matters disclosed herein, we are not currently aware of any such legal proceedings or claims that we believe will have a material adverse effect on our business, financial condition or operating results.

 Item 4.

 Mine Safety Disclosures.

 Not applicable.

 Item 5.

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

 Certain Information Regarding the Trading of Our Common Stock

 Our common stock and public warrants are listed on the Nasdaq Capital Market under the symbols "ADN" and "ADNW", respectively.

 Holders of Our Common Stock

 As of June 2, 2025, there were approximately 29 holders of record of shares of our common stock and 2 holders of record of our warrants. Such numbers do not include DTC participants or beneficial owners holding shares through nominee names.

 Dividends

 We have not declared any cash dividends since inception and we do not anticipate paying any dividends in the foreseeable future. Instead, we anticipate that all of our earnings will be used to provide working capital, to support our operations, and to finance the growth and development of our business, including potentially the acquisition of, or investment in, businesses, technologies or products that complement our existing business. The payment of dividends is within the discretion of the board of directors and will depend on our earnings, capital requirements, financial condition, prospects, applicable Delaware law (which provides that dividends are only payable out of surplus or current net profits) and other factors our board might deem relevant. There are no restrictions that currently limit our ability to pay dividends on our common stock other than those generally imposed by applicable state law.

 Securities authorized for issuance under equity compensation plans

 See Part III, Item 12 for information regarding securities authorized for issuance under our equity compensation plans.

 Recent sales of unregistered securities

 None.

 Purchases of Equity Securities

 We did not purchase any shares of common stock during the year ended December 31, 2024.

 Item 6.

 Reserved

 Item 7.

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

 The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our consolidated financial statements and related notes appearing elsewhere in this Annual Report on Form 10-K.

 Some of the information contained in this discussion and analysis or set forth elsewhere in this Annual Report on Form 10-K, including information with respect to our plans and strategy for our business, includes forward-looking statements that involve risks and uncertainties. As a result of many factors, including those factors set forth in the Item 1A. "Risk Factors" section of this Annual Report on Form 10-K, our actual results could differ materially from the results described in or implied by the forward-looking statements contained in the following discussion and analysis.

 This MD&A generally discusses 2024 and 2023 items and year-over-year comparisons between 2024 and 2023. See Note 1 "Basis of Presentation" in the accompanying consolidated financial statements for additional information.

 Overview

 Advent is an advanced materials and technology development company operating in the fuel cell and hydrogen technology space. Advent develops, manufactures and assembles the critical components that determine the performance of hydrogen fuel cells and other energy systems. Advent's core product offerings are full fuel cell systems and the Membrane Electrode Assembly (MEA) at the center of the fuel cell. The Advent MEA, which derives its key benefits from the properties of Advent's engineered membrane technology, enables a more robust, longer-lasting and ultimately lower-cost fuel cell product.

 Advent's principal operations have been to develop and manufacture MEAs, and to design fuel cell stacks and complete fuel cell systems for a range of customers in the stationary power, portable power, automotive, aviation, energy storage and sensor markets. Advent has its headquarters in Livermore, California, and we have MEA fabrication and system production facilities in Livermore, California and Patras, Greece.

 The majority of Advent's current revenue derives from the sale and servicing of fuel cell systems and MEAs, as well as the sale of membranes and electrodes for specific applications in the iron flow battery and cellphone markets, respectively. While fuel cell systems and MEA sales and associated revenues are expected to provide the majority of Advent's future income, both of these markets remain commercially viable and have the potential to generate material future revenues based on Advent's existing customers. Advent has also secured grant funding for a range of projects from research agencies and other organizations. Advent expects to continue to be eligible for grant funding based on its product development activities over the foreseeable future.

 Change in Independent Registered Public Accounting Firm

 Earlier on September 17, 2024, Ernst & Young (Hellas) Certified Auditors Accountants S.A. ("EY"), the Company's prior independent registered public accounting firm, was dismissed effective immediately. EY had served as the Company's independent registered public account firm since February 9, 2021, and also served as the independent registered public accounting firm of the Company's subsidiary, Legacy Advent, prior to the Business Combination pursuant to the Agreement and Plan of Merger.

 On September 20, 2024, the audit committee of the board of directors of the Company approved the engagement of M&K CPAS, PLLC ("M&K") as the Company's independent registered public accounting firm to audit the Company's consolidated financial statements for the year ending December 31, 2024.

 EY's audit reports on the Company's financial statements as of and for the fiscal years ended December 31, 2023 and 2022 did not contain an adverse opinion or a disclaimer of opinion and were not qualified or modified as to uncertainty, audit scope or accounting principles, provided that EY's audit report as of and for the year ended December 31, 2023 contained an explanatory paragraph regarding the Company's ability to continue as a going concern.

 Reverse Stock Split

 On May 13, 2024, the Company effected a 1-for-30 reverse stock split by filing an amendment to the Company's Second Amended and Restated Certificate of Incorporation, with the Delaware Secretary of State. The reverse stock split combined every thirty shares of our common stock issued and outstanding immediately prior to effecting the reverse stock split into one share of common stock. No fractional shares were issued in connection with the reverse stock split. All historical share and per share amounts reflected throughout this document have been adjusted to reflect the reverse stock split. The authorized number of shares and the par value per share of the Company's common stock were not affected by the reverse stock split.

 Danish Subsidiary Bankruptcy

 Additionally, on July 25, 2024, Advent Technologies A/S, a Danish subsidiary of the Company (the "Danish Subsidiary"), was declared bankrupt under and pursuant to the Denmark Bankruptcy Act (the "Danish Subsidiary Bankruptcy"), and, as a result, Advent Technologies A/S and its wholly-owned Philippines subsidiary, Green Energy Philippines Inc., was deconsolidated from the Company.

 Business Developments

 RHyno Project awarded 34.5 Million by EU Innovation Fund

 On March 5, 2025, the European Climate, Infrastructure and Environment Executive Agency (CINEA) and Advent's wholly owned Greek subsidiary, Advanced Energy Technologies S.A. each signed the grant agreement for the Company's monumental RHyno Project. This EU Innovation Fund grant will provide Advent with 34,534,318 in non-dilutive funding over the lifetime of the project.

 The Advent Renewable Hydrogen Innovative Technologies (RHyno) project involves the establishment of infrastructure for developing and manufacturing innovative fuel cells, electrolysers, and their key components including Advent ground-breaking Membrane Electrode Assembly technology at a megawatt (MW) scale. RHyno aims to pioneer the use of innovative materials to enhance power density and lifespan while significantly reducing the weight and volume of power systems through a streamlined balance of plant.

 The planned state-of-the-art facility is designed to optimize production processes, boost efficiency, and industrialize fuel cell and electrolyser technologies. These advancements are essential for decarbonizing carbon intense industries, such as the aviation, maritime and heavy-duty automotive sectors, with further potential for spillover to other sectors, positioning Advent at the forefront of the clean energy transition.

 Airbus Term Sheet to Launch a Joint Benchmarking Project

 On November 6, 2023, Advent announced that it entered into an agreement with Airbus, a global leader in aeronautics, space, and related services, for a joint benchmarking project regarding an optimized Ion Pair Membrane Electrode Assembly ("MEA") for hydrogen fuel cells. Airbus will provide financial support to the project and its extensive knowledge of the aviation industry. Advent will invest in people, materials, hardware, and third-party research centers, to contribute to the goals of the project. The multi-million-dollar collaboration is currently expected to take place over two years. On February 19, 2025, Advent and Airbus representatives met in Hamburg, Germany to kickoff Phase Two of the joint benchmarking project.

 The goal of the project is to accelerate the development of Advent's MEA and benchmark the Ion Pair MEA against aviation requirements and current/expected technological limits. HT-PEM MEAs operating at temperatures higher than 180 C (360 F) aim to solve one of the largest challenges in aviation fuel cell use: thermal management. High-temperature fuel cells allow increased performance, increased passenger carrying capability, and increased range compared to low-temperature fuel cell stack technology. Advent believes that HT-PEM is a superior option not only for aviation, but also for heavy-duty trucks, the automotive industry and marine use.

 Purchase Agreement with Lincoln Park Capital Fund, LLC ("Lincoln Park")

 On April 10, 2023, Advent entered into a purchase agreement (the "Purchase Agreement") with Lincoln Park, which provides that, upon the terms and subject to the conditions and limitations set forth therein, Advent has the right, but not the obligation, to sell to Lincoln Park up to $50 million worth of shares of its common stock from time to time over the 36-month term of the Purchase Agreement. Concurrently with entering into the Purchase Agreement, Advent also entered into a registration rights agreement with Lincoln Park, pursuant to which we agreed to register the resale of the shares of our common stock that have been and may be issued to Lincoln Park under the Purchase Agreement pursuant to a registration statement. Upon the execution of the Purchase Agreement, we issued 21,186 shares of common stock to Lincoln Park as consideration for its commitment to purchase shares of our common stock under the Purchase Agreement. Lincoln Park has agreed not to cause or engage in any manner whatsoever, any direct or indirect short selling or hedging of our common stock. As of December 31, 2024, Lincoln Park had sold an aggregate of 10,490 shares for net proceeds to the Company of $5.5 million.

 At the Market Offering Agreement

 On June 2, 2023, Advent entered into an At The Market Offering Agreement (the "ATM Agreement") with H.C. Wainwright & Co., LLC, as sales agent (the "Agent"), to create an at-the-market equity program under which it may sell up to $50 million of shares of Advent's Common Stock from time to time through the Agent (the "ATM Offering"). Under the ATM Agreement, the Agent will be entitled to a commission at a fixed rate of 3.0% of the gross proceeds from each sale of shares under the ATM Agreement.

 Sales of Common Stock, if any, under the ATM Agreement may be made in transactions that are deemed to be "at-the-market equity offerings" as defined in Rule 415 under the Securities Act of 1933, as amended (the "Securities Act"), including sales made by means of ordinary brokers' transactions, including on the Nasdaq Capital Market, at prevailing market prices at the time of sale or as otherwise agreed with the Agent. Advent has no obligation to sell, and the Agent is not obligated to buy or sell, any of the Common Stock under the Agreement and may at any time suspend offers under the Agreement or terminate the Agreement. The ATM Offering will terminate upon the termination of the ATM Agreement as permitted therein. As of December 31, 2024, the Agent had sold an aggregate of 233,061 shares for net consideration to the Company of $1.6 million.

 Common Stock was issued pursuant to Advent's previously filed Registration Statement on Form S-3 (File No. 333-271389) that was declared effective on May 2, 2023 and a prospectus supplement and accompanying prospectus relating to the ATM Offering filed with the Securities and Exchange Commission ("SEC") on June 2, 2023.

 Purchase Agreement with Joseph Gunnar & Co., LLC

 On December 22, 2023, the Company entered into a Securities Purchase Agreement (the "Gunnar Purchase Agreement") with those certain purchasers named therein (the "Purchasers") pursuant to which the Company agreed to issue and sell, in a public offering, directly to the Purchasers (the "Registered Direct Offering"), 333,333 shares of common stock. The purchase price per share of Common Stock is $6.00, resulting in gross proceeds of $2,000,000.

 As of the date of filing of this Annual Report on Form 10-K, the net proceeds to the Company are approximately $1.8 million, after deducting estimated expenses payable by the Company associated with the Registered Direct Offering.

 The Company paid Gunnar an aggregate cash fee equal to 9.0% of the gross proceeds of the Registered Direct Offering, and agreed to reimburse Gunnar up to a total of $25,000 for actual fees and expenses of legal counsel and other out-of-pocket expenses.

 Collaboration with the Department of Energy

 The efforts with the constellation of Department of Energy National Laboratories (Los Alamos National Laboratory, LANL; Brookhaven National Laboratory, BNL; National Renewable Energy Laboratory, NREL) continue to gain momentum. This group of leading scientists and engineers is working closely with Advent's development and manufacturing teams and are furthering the understanding of breakthrough materials that will advance HT-PEM fuel cells. This next generation HT-PEM appears to be well suited for heavy duty transportation, marine, and aeronautical applications, as well as delivering benefits in cost and lifetime for stationary power systems used in telecom and other remote power markets.

 Agreements with Hyundai Motor Company ("Hyundai")

 On April 6, 2022, Advent announced the signing of a technology assessment, sales, and development agreement with Hyundai, a leading multinational automotive manufacturer offering a range of world-class vehicles and mobility services in over 200 countries. Advent and Hyundai aim to deliver green energy solutions to current high carbon applications, using fuel cell technology. Under the agreement, Hyundai will provide catalysts to Advent for evaluation in its proprietary MEAs, while Advent intends to support Hyundai in fulfilling its fuel cell project needs, through:

 Developing inks and structures using Hyundai catalysts, which will then be evaluated by Hyundai. Following evaluation, Hyundai will determine whether their own or standard catalysts will be used for this project.

 Supplying MEAs throughout the development/commercialization cycle ("Advent MEAs") for testing, evaluation, and optimization under conditions set by Hyundai.

 Assisting Hyundai with the use and specifications of MEAs as well as their implementation into Hyundai's designs.

 On March 23, 2023, Hyundai announced a successful technology assessment with Advent and following its success, Advent and Hyundai have entered into a Joint Development Agreement ("JDA"). Under the agreement, Hyundai and Advent will work together to further develop HMC-Advent Ion Pair MEA, establish commercial criteria for MEA supply, and evaluate Advent's advanced fuel cell technology for Hyundai's heavy-duty and/or stationary application. Additionally, the parties will introduce advanced cooling technologies for mobility HT-PEM fuel cell stacks. Advent will work closely as Hyundai evaluates these stack cooling technologies and ensure optimal performance under different operating conditions.

 This partnership builds upon a commitment from both companies to develop sustainable energy solutions for carbon-intensive applications. Hyundai aims to accelerate the establishment of a hydrogen-based society based on its vision, Progress for Humanity, and this JDA aligns with that vision. The synergy generated by combining the two companies' advanced technology in this JDA is expected to revolutionize the global MEA market by providing significant improvement in lifetime and an increase in power density versus current HT-PEM MEAs.

 BASF Environmental Catalyst and Metal Solutions ("BASF")

 On May 9, 2023, Advent and BASF, a global leader in precious metals and catalysis, concluded on the terms of a new agreement to join efforts in building a closed loop component supply chain for fuel cells and enter discussions to extend the partnership into the field of water electrolysis. For 20 years, BASF has been a leader in membrane and MEA technology for HT-PEM fuel cells with a strong foundation in precious metal services and catalysis. HT-PEM fuel cells operate at 120 to 180 C, offer a broad operating window and tolerate impurities in the hydrogen fuel source. The fuel cells also enable simplified cooling and need no humidification. Advent offers competitive fuel cell systems for stationary and portable applications based on methanol and on-site reforming. In the future, HT-PEM fuel cells will also be available for heavy duty mobility and marine power. The scope of the agreement includes BASF's full portfolio of products and services to enable circularity in key materials. Both companies will cooperate on BASF's latest membrane development, Celtec -Z, and the new Ion Pair MEA by Advent, aiming for improved performance, lifetime and cost competitiveness.

 Advent and Safran Power Units Sign MoU to Advance HT-PEM Fuel Cell Technology for the Aerospace Sector

 On May 31, 2023, Advent signed a memorandum of understanding ("MoU") with Safran Power Units, a leader in auxiliary power systems and turbojet engines. Leveraging Advent's proprietary Ion Pair MEA technology, and Safran Power Units' knowledge and capabilities in aerospace, this new collaboration seeks to advance the development of next-generation HT-PEM fuel cell technology, specifically for the aerospace sector.

 HT-PEM enables more efficient heat management versus low temperature-PEM ("LT-PEM"). HT-PEM is more adapted for applications requiring high amounts of power combined with strong integration constraints such as aviation. HT-PEM is also more robust and can withstand tougher operating conditions, such as extreme temperatures and pollution, versus LT-PEM.

 As part of the MoU, Advent and Safran Power Units are exploring a joint development agreement for the advancement of HT-PEM fuel cells in aviation and for enhancing Advent's supply capability.

 As of December 31, 2024, there was no new activity in respect to this MoU.

 Launch of the Honey Badger 50 Fuel Cell System

 On August 4, 2022, we announced the launch of our HB50 power system, a compact portable fuel cell system and quiet power supply for use in off-grid field applications such as military and rescue operations. The launch of Advent's portable power system coincided with the Company's fulfilment of its first shipment order from the U.S. Department of Defense. The HB50 power system can be fueled by biodegradable methanol, allowing near silent generation of up to 50W of continuous power with clean emissions. Designed for covert operations, HB50 can easily power radio and satellite communications gear, remote fixed and mobile surveillance systems, and laptop computers along with more general battery charging needs. HB50 is a unique technology that can provide 65% of weight savings versus batteries over a typical 72-hour mission. The weight savings benefit increases further for longer missions.

 HB50's unique design allows it to be used in soldier-worn configurations or operated inside a portable backpack or vehicle while charging batteries and powering soldier systems, while its thermal features allow it to operate within an ambient temperature range of -20 C to +55 C. Aside from its optimized compatibility with Integrated Visual Augmentation System ("IVAS"), HB50 can also power devices such as high frequency radios like the model 117G, as well as B-GAN and StarLink terminals. HB50's durability allows it to be easily deployed in challenging conditions and climates while supporting mission mobility for three to seven days without the need to re-supply.

 Since Honey Badger's fuel cell technology can run on hydrogen or liquid fuels, the system can operate at a fraction of the weight of traditional military-grade batteries to meet the U.S. Department of Defense's continuously evolving needs for 'on-the-go' electronics needs. As military adoption and use of IVAS equipment continues to evolve, the highly portable lightweight power solutions like Honey Badger and HB50 will become a mission critical necessity.

 In September 2023, Advent secured a new $2.2 million contract with the US DoD. This milestone achievement comes under the General Technical Services prime contract and will play a crucial role in supporting the demanding defense mission requirements of the US Army. This contract is the continuation of a series of past contracts with the US DoD and its primary objective is to further optimize Advent's proprietary Honey Badger 50 portable fuel cell system by integrating the Company's innovative Ion Pair MEA technology. Upon the completion of this new 12-month contract, Advent and the US DoD aim to reinforce their long-term collaboration by focusing on the manufacturing process of the enhanced HB50 fuel cell system, that will enable high-volume production manufacturing capacity. MEAs form the heart of the fuel cell, and their performance determines the lifetime, efficiency, weight, and to a large extent, the cost of the end electrochemistry products. Advent's Ion Pair MEA technology is anticipated to significantly enhance HB50's performance, resulting in higher power density and improved compact packaging, making it an ideal solution for off-grid field applications, including military and rescue operations.

 In December 2023, Advent secured a new $2.8 million contract with the US DoD. Under this new defense contract which comes under the umbrella of the Envision Innovative Solutions (''EIS''), Advent will develop advanced manufacturing processes to enable a substantial increase in the production capacity while maintaining quality of the HB50 system. This new project is aligned with Advent's and the US DoD's shared objective to strengthen their long-term collaboration and transform HB50 into a portable and clean source of power.

 As of December 31, 2024, Advent continues to work with the US DoD to advance the HB50 technology.

 Nasdaq Deficiency Letters

 On May 24, 2023, the Company received a letter from the Listing Qualifications Staff (the "Staff") of Nasdaq Stock Market LLC ("Nasdaq") indicating that the bid price of the Common Stock had closed below $1.00 per share for 30 consecutive business days and, as a result, the Company was not in compliance with Nasdaq Listing Rule 5550(a)(2), which sets forth the minimum bid price requirement for continued listing on the Nasdaq Capital Market (the "Minimum Bid Requirement").

 On May 13, 2024, the Company effectuated the Reverse Stock Split, and our Common Stock began trading on a split-adjusted basis on the Nasdaq Capital Market at the opening of trading on May 14, 2024, in an effort to comply with the Minimum Bid Requirement. The Company has since received confirmation from Nasdaq that it has met the Minimum Bid Requirement.

 On April 17, 2024, we received a letter from Nasdaq notifying the Company that it is not in compliance with the periodic reporting requirements for continued listing set forth Nasdaq Listing Rule 5250(c)(1) (the "Timely Report Requirement") due to the fact that this Annual Report on Form 10-K was not filed by the required due date of March 31, 2024 (the "10-K Delinquency Letter"). Additionally, on May 24, 2024, we received a letter from Nasdaq notifying the Company that it is not in compliance with the periodic requirements for continued listing set forth Nasdaq Listing Rule 5250(c)(1) due to the fact that the Company did not file its Quarterly Report on Form 10-Q for the quarter ended March 31, 2024 (the "First Quarter 10-Q") by the required due date of May 14, 2024 (the "Q1 10-Q Delinquency Letter"). Further, on November 22, 2024, we received a letter from Nasdaq notifying the Company that it is not in compliance with the Timely Reporting Requirement due to the fact that the Company did not file its Quarterly Report on Form 10-Q for the quarter ended September 30, 2024 (the "Third Quarter 10-Q") by the required due date of November 20, 2024 (the "Q2 10-Q Delinquency Letter"). The Company submitted compliance plans to Nasdaq setting forth its plan to file both this Annual Report on Form 10-K, the First Quarter 10-Q and the Third Quarter 10-Q. The Company filed its Annual Report on Form 10-K on August 13, 2024, its First Quarter 10-Q on October 15, 2024 and its Third Quarter 10-Q on December 27, 2024.

 Additionally, on October 18, 2024, we received a letter from Nasdaq notifying the Company that since the Company's Form 10-Q for the period ended June 30, 2024, reported stockholders' equity of ($2,879,000), and as of the date of such letter the Company did not meet the alternatives of market value of listed securities or net income from continuing operations, the Company is no longer in compliance with Nasdaq's Listing Rule requiring the Company to maintain a minimum of $2,500,000 in stockholders' equity for continued listing. The Company thereafter submitted its plan to Nasdaq to regain compliance with the continued listing requirements and undertook remedial measures to correct the deficiency in its stockholders' equity. As of April 15, 2025, based on developments at the Company including the resolution of certain claims and the then-current value of its technology and licenses, the Company confirmed to Nasdaq its belief that it satisfied the Nasdaq continued listing requirements as its stockholders' equity exceeded the $2.5 million minimum requirement and that it would report the same in its Form 10-Q for Q2 2025.

 New Board Member

 On December 31, 2024, the Company's shareholders elected Robert Schwartz as a Class I director of the Company, with a term expiring at the 2027 annual meeting of the Company's stockholders or until his successor is duly elected and qualified in accordance with our second amended and restated certificate of incorporation and amended and restated bylaws, or his earlier death, resignation or removal.

 Termination of Former Chief Executive Officer

 On October 24, 2024, the Board approved the termination of the employment of Vassilios Gregoriou, the Chief Executive Officer, Acting Chief Financial Officer, for cause, effective immediately. Mr. Gregoriou was also removed as Chairman of the Board of Directors.

 Advent Technologies A/S declared bankrupt

 On July 25, 2024, Advent Technologies A/S was declared bankrupt by the court in Aalborg, Denmark. The petition was brought by IDA, the union of engineers with a claim for 402,000. As the Company did not have the ability to pay the full amount due, the Danish court declared Advent Technologies A/S bankrupt. Advent Technologies A/S and its wholly-owned subsidiary Green Energy Philippines, Inc. will be liquidated by the court appointed trustee to settle all claims under the bankruptcy. The Company anticipates it will receive no residual assets from the bankruptcy. The remainder of the Company's legal entities have no plans to declare bankruptcy and will continue as going concern entities.

 Arbitration Award

 On August 16, 2024, the Company was informed that an arbitration decision and award was decided in favor of F.E.R. fischer Edelstahlrohre GmbH ("F.E.R."), pursuant to the arbitration provisions of the Share Purchase Agreement dated June 25, 2021, whereby the Company acquired SerEnergy and FES on August 31, 2021. The arbitration was held in Frankfurt am Main, Germany in accordance with the Arbitration Rules of the German Arbitration Institute. The award in favor of F.E.R. is in the amount of approximately 4.5 million euro. The Company appealed the decision and instructed its counsel to file a motion with the Higher Regional Court of Frankfurt to set aside the arbitral award. In February 2025, the parties met to discuss the possibility of a settlement and the framework for such a settlement, but there can be no guaranty that the parties will be able to finalize an agreement, and at this time, the Company cannot accurately predict the outcome of this matter.

 Key Factors Affecting Our Results

 Advent believes that its performance and future success depend on several factors that present significant opportunities for Advent but also pose risks and challenges, including those discussed below.

 Increased Customer Demand

 Based on conversations with existing customers and incoming inquiries from new customers, Advent anticipates substantial increased demand for its fuel cell systems and MEAs from a wide range of customers as it scales up its production facilities and testing capabilities, and as the awareness of its MEA capabilities becomes widely known in the industry. Advent expects both its existing customers to increase order volume, and to generate substantial new orders from major organizations, with some of whom it is already in discussions regarding prospective commercial partnerships and joint development agreements. As of December 31, 2024, Advent was still generating a low level of revenues compared to its future projections and has not made any commercial sales to these major organizations.

 Successful development of the Advanced MEA product

 Advent's future success depends in large part on the increasing integration of the hydrogen fuel cell into the energy transition globally over the next decade. In order to become cost-competitive with existing renewable power generation and energy storage technology and achieve widespread adoption, fuel cells will need to achieve substantial improvement in the cost/kw performance ratio delivered to prospective fuel cell customers, predominantly OEMs, System Integrators and major energy companies. Advent expects to play an important enabling role in the adoption of hydrogen fuel cells, as its MEA technology is the critical determining factor in the cost/kw performance ratio of the fuel cells. In partnership with the Los Alamos National Laboratory, Advent is currently developing its next generation MEA technology ("Advanced MEA") which is anticipated to deliver as much as three times the power output of its current MEA product. While Advent is already projecting being able to pass through cost benefits to its customers through economies of scale as it increases MEA production, the successful development of the Advanced MEA will be an important factor in delivering the required improvement in cost/kw performance to Advent's customers.

 Basis of Presentation

 Advent's consolidated financial statements have been prepared in accordance with U.S. GAAP. The Company has determined that it operates in one reportable segment. See Note 1 "Basis of Presentation" in the accompanying consolidated financial statements for more information.

 Components of Results of Operations

 Revenue

 Revenues consist of sales of goods (MEAs, membranes, fuel cell stacks, fuel cell systems and electrodes) and servicing of those systems, as well as engineering fees and revenue from Joint Development Agreements (JDAs) and Technology Assessment Agreements (TAAs) with world-leading OEMs for the development of joint products. Advent expects revenues to increase materially and be weighted towards JDAs and TAAs over time.

 Cost of Revenues

 Cost of revenues consists of consumables, raw materials, processing costs and direct labor costs associated with the assembly, manufacturing, and servicing of MEAs, membranes, fuel cell stacks and systems and electrodes. Advent expects its cost of revenues to decrease as the focus on providing services under Joint Development Agreements and Technology Assessment Agreements and its shift from product sales. Advent also recognizes slow moving inventory reserve in cost of revenues. Advent recognizes cost of revenues in the period that revenues are recognized.

 Income from Grants

 Income from grants consists of cash subsidies received from research agencies and other national and international organizations in support of Advent's research and development activities. Advent expects to continue to be eligible for grant income and remains in discussion with a number of prospective grantors in relation to a number of product development activities.

 Research and Development Expenses

 Research and development expenses consist of costs associated with Advent's research and development activities, such as laboratory costs and sample material costs. Advent expects its research and development activities to increase substantially as it invests in improved technology and products.

 Administrative and Selling Expenses

 Administrative and selling expenses consist of travel expenses, indirect labor costs, fees paid to consultants, third parties and service providers, taxes and duties, legal and audit fees, depreciation, business development salaries and limited marketing activities, and incentive and stock-based compensation expense. Advent has implemented reductions to administrative and selling expenses to conserve cash until such time the business scales up and a shift in strategy to sell through strategic partnerships will further reduce selling expenses. The additional costs incurred are as a result of operating as a public company, including compliance with the rules and regulations of the SEC, legal, audit, additional insurance expenses, investor relations activities and other administrative and professional services.

 Other Income / (Expenses), Net

 Other income / (expenses) are mainly comprised of costs associated with the Lincoln Park equity line of credit for the year ended December 31, 2023, and other de minimis incidental income / (expenses) incurred by the business during the year ended December 31, 2024.

 Change in Fair Value of Warrant Liability

 Change in fair value of warrant liability amounting to $0.1 million and $0.4 million for the year ended December 31, 2024 and 2023, respectively, represents the change in fair value of the Private Placement Warrants and Working Capital Warrants for the year ended December 31, 2024 and 2023, respectively.

 Finance income / (expenses), Net

 Finance income / (expenses) consist mainly of bank and interest charges.

 Foreign Exchange Gains / (Losses), Net

 Foreign exchange gains / (losses) consists of foreign exchange gains or losses on transactions denominated in foreign currencies and on translation of monetary items denominated in foreign currencies. As the Company scales up, its foreign exchange exposure is likely to increase given its revenues are denominated in both euros and dollars, and a portion of the Company's costs are denominated in euros.

 Amortization of Intangibles

 The intangible assets of $4.7 million recognized on the acquisition of UltraCell is the Trade Name "UltraCell" ($0.4 million) and the Patented Technology ($4.3 million). The Trade Name has an indefinite useful life while the Patented Technology has a useful life of 10 years. Amortization expense of nil and $0.2 million has been recognized for the year ended December 31, 2024 and 2023, respectively.

 Income tax benefit (provision) amounting to $0.1 million and $0.1 million for the years ended December 31, 2024 and 2023, respectively. As of December 31, 2024, and 2023, we provided a valuation allowance to offset the deferred tax asset related to the net operating loss carryforwards.

 Results of Operations

 Comparison of the Years Ended December 31, 2024 and 2023

 The following table sets forth a summary of our consolidated results of operations for the years ended December 31, 2024 and 2023, and the changes between periods.

 Years Ended December 31,

 (Amounts in thousands, except share and per share amounts)

 2024

 2023

 $
 change

 %
 change

 $

 3,276

 $

 1,536

 $

 1,740

 113.3

 %

 (1,488

)

 (6,964

)

 5,476

 (78.6

)%

 Gross profit / (loss)

 1,788

 (5,428

)

 7,216

 (132.9

)%

 1,582

 (695

)

 (43.9

)%

 (3,225

)

 (7,567

)

 4,342

 (57.4

)%

 (14,318

)

 (28,825

)

 14,507

 (50.3

)%

 (398

)

 (73.3

)%

 Amortization of intangibles

 (29

)

 (207

)

 (86.0

)%

 (3,617

)

 (1,048

)

 (2,569

)

 245.1

 %

 -

 (9,763

)

 9,763

 N/A

 (18,369

)

 (50,713

)

 32,344

 (63.8

)%

 (335

)

 (85.0

)%

 (535

)

 (639

)

 (614.4

)%

 (272

)

 (373

)

 (369.3

)%

 Loss contingency

 (4,724

)

 -

 (4,724

)

 N/A

 Net gains/ (losses) on disposal/write-offs of property, plant and equipment and intangible assets

 (6,235

)

 -

 (6,235

)

 N/A

 (870

)

 (100.8

)%

 Loss before income taxes

 (30,069

)

 (50,984

)

 20,915

 (41.0

)%

 (27

)

 (32.9

)%

 (30,014

)

 (50,902

)

 20,888

 (41.0

)%

 (10,980

)

 (20,495

)

 9,515

 (46.4

)%

 $

 (40,994

)

 $

 (71,397

)

 $

 30,403

 (42.6

)%

 Net loss per share

 $

 (11.46

)

 $

 (26.55

)

 $

 15.09

 N/A

 Basic loss per share from discontinued operations

 (4.19

)

 (10.69

)

 6.50

 N/A

 Basic loss per share

 (15.65

)

 (37.24

)

 21.59

 N/A

 N/A

 N/A

 $

 (11.46

)

 $

 (26.55

)

 $

 15.09

 N/A

 Diluted loss per share from discontinued operations

 (4.19

)

 (10.69

)

 6.50

 N/A

 Diluted loss per share

 (15.65

)

 (37.24

)

 21.59

 N/A

 N/A

 N/A

 Revenue

 Our total revenue from continuing operations increased by approximately $1.7 million or 113.3% from approximately $1.5 million in the year ended December 31, 2023 to approximately $3.3 million in the year ended December 31, 2024. The increase in revenue was driven by an increase in Joint Development Agreements for the year ended December 31, 2024.

 Cost of Revenues

 Cost of revenues decreased by approximately $(5.5) million from approximately $7.0 million in the year ended December 31, 2023 to approximately $1.5 million in the year ended December 31, 2024. The decrease in cost of revenues was primarily related to a shift from product sales to Joint Development Agreements.

 Income from Grants

 Income from grants decreased by approximately $(0.7) million from $1.6 million in the year ended December 31, 2023 and $0.9 million in the year ended December 31, 2024.

 Research and Development Expenses

 Research and development expenses were approximately $7.6 million in the year ended December 31, 2023, and $3.2 million in the year ended December 31, 2024. Research and development expenses primarily relate to internal research and development costs, as well as our cooperative research and development agreements.

 Administrative and Selling Expenses

 Administrative and selling expenses were approximately $28.8 million in the year ended December 31, 2023, and $14.3 million in the year ended December 31, 2024. The decrease was primarily due to cost reductions and staff reductions throughout 2024.

 Amortization of Intangibles

 Amortization of intangible assets was less than $0.1 million in the year ended December 31, 2024, which was a decrease of $(0.2) million compared to the year ended December 31, 2023. The reduction in amortization expense is due to significant impairment charges that were recognized in 2023.

 Credit Loss – Customer Contracts

 We recognized credit losses on customer contracts of $3.6 million during the year ended December 31, 2024, which was an increase of $2.6 million from December 31, 2023.

 Impairment Losses

 We recognized impairment losses of $9.8 million in 2023, primarily related to goodwill and other intangible assets from the UltraCell and SerEnergy and FES acquisitions. Refer to Critical Accounting Policies and Estimates disclosure for further details.

 Change in Fair Value of Warrant Liability

 The change in fair value of warrant liability amounting to $0.1 million and $0.4 million was due to the change in fair value of the Private Placement Warrants and Working Capital Warrants for the year ended December 31, 2024 and 2023, respectively.

 Finance income (expenses), net

 Finance (expenses) increased by $(0.6) million from $0.1 million for the year ended December 31, 2023 to $(0.5) million for the year ended December 31, 2024. The increase is primarily due to interest expense related to the short-term loan payable.

 Foreign exchange gains / (losses) increased by $(0.4) million from $0.1 million for the year ended December 31, 2023 to $(0.3) million for the year ended December 31, 2024.

 Loss contingency

 We recognized $4.7 million loss continency related to the litigation with F.E.R. fischer Edelstahlrohre GmbH during the year ended December 31, 2024.

 Net gains/ (losses) on disposal/write-offs of property, plant and equipment and intangible assets

 We recognized losses of $(6.2) million during the year ended December 31, 2024, which is an increase of $(6.2) million from December 31, 2023. The losses primarily relate to the disposal of certain coating machines at the Hood Park facility and the termination of the Hood Park lease.

 We recognized expenses of $(0.9) million during the year ended December 31, 2023, which primarily relate to the Lincoln Park equity line of credit and $7 thousand of income during the year ended December 31, 2024.

 We recognized $11.0 million loss during the year ended December 31, 2024, down from $20.5 million during the year ended December 31, 2023. The reduction in loss from discontinued operations is primarily due to the partial period and reduced activity in 2024 of approximately 7 months relative to the full year in December 31, 2023.

 Liquidity and Capital Resources

 At December 31, 2024, the Company had $0.4 million in cash and cash equivalents. During the years ended December 31, 2024 and 2023 the Company incurred net losses from continuing operations of $30.0 and $51.0 million, respectively. At December 31, 2024, the Company had $2.7 million in current assets and $28.8 in current liabilities, leaving the Company a working capital deficit of $(26.1) million.

 A major financial challenge and significant risk facing the Company is a lack of positive cash flow and liquidity. The Company's ability to meet its liquidity needs will largely depend on its ability to raise capital in the very short term and generate cash in the future. If the Company is unable to obtain sufficient funding, it could be required to delay its development efforts, limit activities, and further reduce research and development costs, which could adversely affect its business prospects and delivery of contractual obligations. A cash shortfall at any point in time over the next twelve months could result in the Company failing to meet its overdue and current obligations which could trigger action against the Company and/or its subsidiaries for liquidation by employees, authorities, or creditors. Because of the uncertainty in securing additional funding, delays in growth of revenue, failure to materialize cost-cutting efforts and the insufficient amount of cash and cash equivalents as of the consolidated financial statement filing date, management has concluded that substantial doubt exists with respect to the Company's ability to continue as a going concern for one year from the date the consolidated financial statements are issued.

 The following table sets forth a summary of our consolidated cash flows for the years ended December 31, 2024 and 2023, and the changes between periods.

 Years Ended December 31,

 2024

 2023

 $
 change

 %
 change

 Net cash provided by/(used in) operating activities from continuing operations

 $

 1,398

 $

 (20,976

)

 $

 22,374

 (106.7

)%

 Cash flows from investing activities:

 Proceeds from sale of property and equipment

 1,294

 1,041

 411.5

 %

 Purchases of property and equipment

 (36

)

 (2,443

)

 2,407

 (98.5

)%

 Purchases of intangible assets

 (47

)

 -

 (47

)

 N/A

 Advances for the acquisition of property and equipment

 -

 (1,255

)

 1,255

 N/A

 Acquisition of a subsidiary, net of cash acquired

 -

 (1,864

)

 1,864

 N/A

 Net cash provided by/(used in) investing activities from continuing operations

 $

 1,211

 $

 (5,309

)

 $

 6,520

 (122.8

)%

 Cash flows from financing activities:

 Proceeds of issuance of common stock and paid-in capital

 9,059

 (8,768

)

 (96.8

)%

 Proceeds from borrowing

 -

 N/A

 Repayments of debt

 (101

)

 -

 (101

)

 N/A

 Net cash provided by financing activities from continuing operations

 $

 $

 9,059

 $

 (8,209

)

 (90.6

)%

 Net increase/(decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents from continuing operations

 $

 3,459

 $

 (17,226

)

 $

 20,685

 (120.1

)%

 Effect of exchange rate changes on cash, cash equivalents, restricted cash and restricted cash equivalents

 355.4

 %

 Net cash provided by / (used in) discontinued operations:

 Cash used in operating activities

 (8,011

)

 (11,138

)

 3,127

 (28.1

)%

 Cash used in investing activities

 (38

)

 (926

)

 (95.9

)%

 Cash provided by financing activities

 -

 N/A

 Net cash used in discontinued operations

 (7,506

)

 (12,064

)

 4,558

 (37.8

)%

 Net decrease in cash, cash equivalents, restricted cash and restricted cash equivalents

 (3,669

)

 (29,207

)

 25,538

 (87.4

)%

 Cash, cash equivalents, restricted cash and restricted cash equivalents at the beginning of year

 4,050

 33,619

 (29,569

)

 (88.0

)%

 Cash, cash equivalents, restricted cash and restricted cash equivalents at the end of year

 $

 $

 4,412

 $

 (4,031

)

 (91.4

)%

 Cash flows provided by/(used in) operating activities from continuing operations

 Net cash provided by operating activities from continuing operations was approximately $1.2 million for the year ended December 31, 2024, which primarily related to the Company's limited cash position, shift in sales strategy to focus on JDAs reducing cost of sales and increases in trade and other payables during 2024.

 Net cash used in operating activities from continuing operations was approximately $(21.0) million for the year ended December 31, 2023, which related to outflows in connection with administrative and selling expenses, an increase in inventory, research and development expenses, and costs associated with insurances services and other personnel costs.

 Cash flows provided by/(used in) investing activities from continuing operations

 Advent's cash flows provided by investing activities from continuing operations was approximately $1.2 million for the year ended December 31, 2024, which primarily related to the sale of equipment.

 Advent's cash flows used in investing activities from continuing operations was approximately $(5.3) million for the year ended December 31, 2023, which primarily related to the acquisition of plant and equipment. Investing cash flow also included a $1.9 million payment to complete the acquisition of our fuel cell systems business in Denmark, Germany and the Philippines.

 Cash flows from financing activities from continuing operations

 Advent's cash flows provided by financing activities from continuing operations was approximately $0.9 million for the year ended December 31, 2024, which represents $0.3 million of net proceeds of issuance of common stock and paid-in capital in connection with the At the Market Offering with H.C. Wainwright & Co., LLC and $0.7 million of proceeds from short-term debt, less repayments of $0.1 million.

 Advent's cash flows from financing activities from continuing operations were approximately $9.1 million for the year ended December 31, 2023, which related to the net cash proceeds from the sale of shares under the Lincoln Park facility, the At the Market Offering with H.C. Wainwright & Co., LLC and a private placement offering.

 Reverse Stock Split

 On April 29, 2024 and April 30, 2024, our stockholders and Board, respectively, approved a reverse stock split of our Common Stock, at a ratio of 1-for-30 (the "Reverse Stock Split"), as of the Effective Date. The Effective Date of the Reverse Stock Split with the Secretary of the State of Delaware was 5:00 p.m. on May 13, 2024 and May 14, 2024 in the marketplace.

 On the Effective Date, the total number of shares of our Common Stock held by each shareholder was converted automatically into the number of whole shares of Common Stock equal to (i) the number of issued and outstanding shares of Common Stock held by such shareholder immediately prior to the Reverse Stock Split, divided by (ii) 30.

 No fractional shares were issued in connection with the Reverse Stock Split, and stockholders who would otherwise be entitled to a fractional share received a proportional cash payment.

 The Company is authorized to issue 501,000,000 shares of Common Stock and that number did not change as a result of the Reverse Stock Split.

 The Reverse Stock Split did not have any effect on the stated par value of our Common Stock. The rights and privileges of the holders of shares of Common Stock are unaffected by the Reverse Stock Split. All of our options, warrants and convertible securities outstanding immediately prior to the Reverse Stock Split have been appropriately adjusted by dividing the number of shares of Common Stock into which the options, warrants and convertible securities are exercisable or convertible by 30.

 Contract Assets and Contract Liabilities

 Contract assets reflect revenue recognized and performance obligations satisfied in advance of customer billing. As of December 31, 2024, and 2023, Advent recognized contract assets of $623 thousand and $9 thousand, respectively on the consolidated balance sheets.

 Advent recognizes contract liabilities when the Company receives customer payments or has the unconditional right to receive consideration in advance of the performance obligations being satisfied on the Company's contracts. The Company receives payments from customers based on the terms established in the contracts. Contract liabilities are classified as either current or long-term liabilities in the consolidated balance sheets based on the timing of when the Company expects to recognize the related revenue. As of December 31, 2024, and 2023, The Company recognized contract liabilities of $3.2 million and $0.4 million, respectively, in the consolidated balance sheets. During the years ended December 31, 2024 and 2023, the Company recognized $0.1 million and $0.1 million in revenues.

 Off-Balance Sheet Commitments and Arrangements

 Since the date of our incorporation, Advent has not engaged in any off-balance sheet arrangements, as defined in the rules and regulations of the SEC.

 Critical Accounting Policies and Estimates

 Advent's consolidated financial statements have been prepared in accordance with U.S. GAAP. The preparation of these financial statements requires Advent to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities as of the balance sheet date, as well as the reported expenses incurred during the reporting period. Management bases its estimates on historical experience and on various other assumptions believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results could differ from those estimates, and such differences could be material to Advent's financial statements.

 Revenue Recognition from January 1, 2019

 In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), as amended, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. We adopted ASU No. 2014-09 on January 1, 2019, using the modified retrospective approach to all contracts not completed at the date of initial application.

 In accordance with ASC 606, revenue is recognized when control of the promised goods or services are transferred to a customer in an amount that reflects the consideration that the Company expects to receive in exchange for those services. We apply the following five steps in order to determine the appropriate amount of revenue to be recognized as it fulfills its obligations under each of its arrangements:

 identify the contract with a customer,

 identify the performance obligations in the contract,

 determine the transaction price,

 allocate the transaction price to performance obligations in the contract, and

 recognize revenue as the performance obligation is satisfied.

 With significant and recurring customers, we negotiate written master agreements as framework agreements (general terms and conditions of trading), following individual purchase orders. For customers with no master agreements, the approved purchase orders form the contract. Effectively, contracts under the revenue standard have been assessed to be the purchase orders agreed with customers.

 We have assessed that each product sold is a single performance obligation because the promised goods are distinct on their own and within the context of the contract. In cases where the agreement includes customization services for the contracted products, we are providing integrated services; therefore, the goods are not separately identifiable, but are inputs to produce and deliver a combined output and form a single performance obligation within the context of the contract. Furthermore, we assessed whether it acts as a principal or agent in each of its revenue arrangements and has concluded that in all sales transactions it acts as a principal. Additionally, we, taking into consideration the guidance and indicative factors provided by ASC 606, concluded that it provides assurance type warranties (warranty period is up to two years) as it does not provide a service to the customer beyond fixing defects that existed at the time of sale. We, based on historical performance, current circumstances, and projections of trends, estimated that no allowance for returns as per warranty policy should be recognized, at the time of sale, accounted for under ASC 460, Guarantees.

 Under ASC 606, we estimate the transaction price, including variable consideration, at the commencement of the contract and recognize revenue over the contract term, rather than when fees become fixed or determinable. In other words, where contracts with customers include variable consideration (i.e. volume rebates), we estimate at contract inception the variable consideration and adjust the transaction price only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. Furthermore, no material rights or significant financing components have been identified in our contracts. Payment terms generally include advance payment requirements. The time between a customer's payment and completion of the performance obligation is less than one year. Payment terms are in the majority fixed and do not include variable consideration, except from volume rebates.

 Revenue from satisfaction of performance obligations is recognized based on identified transaction price. The transaction price reflects the amount to which we have rights under the present contract. It is allocated to the distinct performance obligations based on standalone selling prices of the services promised in the contract. In cases of more than one performance obligation, we allocate transaction price to the distinct performance obligations in proportion to their observable stand-alone selling prices and recognize revenue as those performance obligations are satisfied.

 In the majority of cases of product sales, revenue is recognized at a point in time when the customer obtains control of the respective goods that is, when the products are shipped from our facilities as control passes to the customer in accordance with agreed contracts and the stated shipping terms. In cases where the contract includes customization services, in which one performance obligation is identified, revenue is recognized over time as our performance does not create an asset with alternative use and we have an enforceable right to payment for performance completed to date. We use the input method (i.e., cost-to-cost method) to measure progress towards complete satisfaction of the performance obligation.

 Income from grants and related deferred income

 Grants include cash subsidies received from various institutions and organizations. Grants are recognized as other income. Such amounts are recognized in the consolidated statements of operations when all conditions attached to the grants are fulfilled.

 Condition to the grants would not be fulfilled unless related costs have been characterized as eligible by the grantors, are actually incurred and there is certainty that costs are allowable. These grants are recognized as deferred income when received and recorded in income when the eligible and allowable related costs and expenses are incurred. Under all grant programs, a coordinator is specified. The coordinator, among other, receives the funding from the grantor and proceeds to its distribution to the parties agreed in the process specified in the program. We assessed whether it acts as a principal or agent in its role as a coordinator for specific grants and has concluded that in all related transactions it acts as an agent.

 Goodwill

 The Company allocates the fair value of purchase consideration transferred in a business acquisition to the tangible assets acquired, liabilities assumed, and intangible assets acquired based on their estimated fair values. The excess of the fair value of purchase consideration transferred over the fair values of these identifiable assets and liabilities is recorded as goodwill. Such valuations require management to make significant estimates and assumptions, especially with respect to intangible assets. Significant estimates in valuing certain intangible assets include, but are not limited to, future expected cash flows from acquired licenses, trade names, in process research and development ("R&D"), useful lives and discount rates, patents, customer clientele, customer contracts and know-how. Management's estimates of fair value are based upon assumptions believed to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ from estimates. During the measurement period, the Company may record adjustments to the assets acquired and liabilities assumed, with the corresponding offset to goodwill. Upon the conclusion of the measurement period, any subsequent adjustments are recorded in the consolidated statement of operations.

 For significant acquisitions, the Company obtains independent appraisals and valuations of the intangible (and certain tangible) assets acquired and certain assumed obligations as well as equity. The Company analyzes each acquisition individually and all acquisitions within each reporting period in aggregate to determine if those are material acquisitions in the context of ASC 805-10-50.

 The estimated fair values and useful lives of identified intangible assets are based on many factors, including estimates and assumptions of future operating performance and cash flows of the acquired business, estimates of cost avoidance, the nature of the business acquired, the specific characteristics of the identified intangible assets and our historical experience and that of the acquired business. The estimates and assumptions used to determine the fair values and useful lives of identified intangible assets could change due to numerous factors, including product demand, market conditions, regulations affecting the business model of our operations, technological developments, economic conditions and competition.

 We conduct a goodwill impairment analysis annually in the fourth fiscal quarter, or more frequently, if changes in facts and circumstances indicate that the fair value of our reporting units may be less than their carrying amounts. In testing goodwill for impairment, the Company first assesses qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, the Company determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then additional impairment testing is not required. When the Company determines a fair value test is necessary, it estimates the fair value of a reporting unit and compares the result with its carrying amount, including goodwill. If the carrying amount of a reporting unit exceeds its fair value, an impairment is recorded equal to the amount by which the carrying value exceeds the fair value, up to the amount of goodwill associated with the reporting unit. Currently, we identify three reporting units.

 As a part of the annual impairment assessment, the Company determined that a triggering event for two of our reporting units, UltraCell and SerEnergy / FES, had occurred which would require testing goodwill and long-lived assets, including definite-lived intangibles, for impairment.

 The Company considered the triggering events related to current and expected future economic and market conditions and their impact on the Company, as well as the current revenue forecasts. Given certain market factors, the Company determined that these triggering events had occurred and would require a quantitative analysis to be performed.

 As a part of the impairment assessment, the Company reviewed significant fair value input assumptions including revenues, margin, and capital expenditures to reflect current market conditions. Other changes in valuation assumptions included increases in interest rates and market volatility, resulting in higher discount rates.

 UltraCell Reporting Unit

 In the second quarter of 2023, the Company updated the forecasted future cash flows of UltraCell used in the fair value measurement of the intangible assets and goodwill using a combination of market, cost and income approach methods. The Company is phasing out use of the UltraCell trade name and therefore recognized an impairment charge of $0.4 million during the period. The Patented Technology was valued with the multi-period excess earnings method, which is an income approach. The discount rate used for the valuation of the Patented Technology increased to 17.7% from 11.6% at the time of the acquisition of UltraCell. The Company determined that the undiscounted cash flows related to the Patented Technology was less than the current carrying value and therefore recognized an impairment charge of $3.3 million during the period. The Company determined that the fair value of the reporting unit utilizing the updated forecast was less than its current carrying value. As a result, the Company recorded a goodwill impairment charge of $0.6 million during the year ended December 31, 2023. The Company did not record any goodwill impairment charge with respect to the UltraCell Reporting Unit during the year ended December 31, 2024.

 SerEnergy and FES Reporting Unit

 In the second quarter of 2023, the Company updated the forecasted future cash flows of SerEnergy and FES used in the fair value measurement of the intangible assets and goodwill using a combination of market, cost and income approach methods. The Company acquired finite-lived intangible assets, including patents, process know-how, and order backlog in conjunction with the SerEnergy and FES acquisition. The Company determined the undiscounted cash flows attributable to the IPR&D was greater than the current carrying value. As a result, the Company believes that the updated long-term forecast did not indicate impairment related to IPR&D. All other finite-lived intangible assets related to the SerEnergy and FES acquisition were previously fully amortized or impaired. The Company determined that the fair value of the reporting unit was $13.6 million utilizing the updated forecast, which was less than its current carrying value. As a result, the Company recorded a goodwill impairment charge of $5.1 million during the year ended December 31, 2023. The Company did not record any goodwill impairment charge with respect to the SerEnergy and FES Reporting Units during the year ended December 31, 2024.

 During the fourth quarter of 2023, the Company fully impaired IPR&D given it is unlikely to recognize a future benefit from the intangible asset. As a result, the Company did not record any goodwill impairment charge with reference to the IPR&D during the year ended December 31, 2024.

 Income Taxes

 Advent follows the asset and liability method of accounting for income taxes under ASC 740, Income Taxes. Under the asset and liability method, deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to temporary differences between the financial statements carrying amounts of existing assets and liabilities and their respective tax bases. This method also requires the recognition of future tax benefits, such as net operating loss carry forwards, to the extent that it is more likely than not that such benefits will be realized. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that included the enactment date. Valuation allowances are established, when necessary, to reduce deferred tax assets to the amount expected to be realized. Valuation allowances are reassessed periodically to determine whether it is more likely than not that the tax benefits will be realized in the future and if any existing valuation allowance should be released.

 Part of the Advent's business activities are conducted through its subsidiaries outside of U.S. Earnings from these subsidiaries are generally indefinitely reinvested in the local businesses. Further, local laws and regulations may also restrict certain subsidiaries from paying dividends to their parents. Consequently, Advent generally does not accrue income taxes for the repatriation of such earnings in accordance with ASC 740, "Income Taxes." To the extent that there are excess accumulated earnings that we intend to repatriate from any such subsidiaries, we recognize deferred tax liabilities on such foreign earnings.

 Advent assesses its income tax positions and records tax benefits for all years subject to examination based on the evaluation of the facts, circumstances, and information available at each reporting date. For those tax positions with a greater than 50 percent likelihood of being realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant information, Advent records a tax benefit. For those income tax positions that are not likely to be sustained, no tax benefit is recognized in the consolidated financial statements. Advent recognizes interest and penalties related to uncertain tax positions as part of the provision for income taxes.

 ASC 740 prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more likely than not to be sustained upon examination by taxing authorities. For those income tax positions that are not likely to be sustained, no tax benefit is recognized in the consolidated financial statements. Advent recognizes interest and penalties related to uncertain tax positions as part of the provision for income taxes.

 For the years ended December 31, 2024 and 2023, net income tax benefits (provisions) of $0.1 million and $0.1 million, respectively, have been recorded in the consolidated statements of operations. Advent is currently not aware of any issues under review that could result in significant accruals or material deviation from its position. The Company is currently not aware of any issues under review that could result in significant accruals or material deviation from its position. The Company is subject to income tax examinations by major taxing authorities.

 The Company and its U.S. subsidiaries may be subject to potential examination by U.S. federal, state and city, while the Company's subsidiaries outside U.S. may be subject to potential examination by their taxing authorities in the areas of income taxes. These potential examinations may include questioning the timing and amount of deductions, the nexus of income among various tax jurisdictions and compliance with the U.S. federal, state and city, and tax laws in the countries where business activities of Company's subsidiaries are conducted. On December 22, 2017, the Tax Cuts and Jobs Act of 2017 was signed into legislation. As part of the legislation, the U.S. corporate income tax rate was reduced from 35% to 21%, among other changes.

 Bond Loan

 On May 25, 2022, Advent SA and UNI.FUND entered into an agreement to finance Cyrus with a Bond Loan of 1.0 million. As a part of this transaction, Advent SA offered 0.3 million in bond loans with an annual interest rate of 8.00%. The term of the loan is three years and there is a surcharge of 2.5% for overdue interest.

 Mandatory conversion of the Bond Loan will occur in the event of qualified financing which is equivalent to a share capital increase by Cyrus in the first three years from the execution of the Bond Loan agreement with a total amount over 3 million which is covered by third parties unrelated to the basic shareholders or by investors related to them.

 The Company classifies the Bond Loan as an available for sale financial asset on the consolidated balance sheets. The Company recognizes interest income within the consolidated statement of operations. For the year ended December 31, 2023, the Company recognized $26 thousand of interest income related to the Bond Loan within the consolidated statements of operations.

 The Bond Loan is remeasured to its fair value at each reporting period and upon settlement. The estimated fair value of the Bond Loan is determined using Level 3 inputs by using a discounted cash flow model. The change in fair value is recognized within the consolidated statements of comprehensive loss. During the year ended December 31, 2023, the Company fully reserved the Bond Loan as an expected credit loss and continues to do so as of December 31, 2024.

 Warrant Liability

 The Company accounts for the 878,985 warrants (comprising of 813,314 Public Warrants and 65,671 Private Placement Warrants) issued in connection with the initial public offering and the 13,333 Working Capital Warrants issued at the consummation of the Business Combination in accordance with ASC 815-40-15-7D. If the warrants do not meet the criteria for equity treatment, they must be recorded as liabilities. We have determined that only the Private Placement Warrants and Working Capital Warrants must be recorded as liabilities and accordingly, the Company classifies these warrant instruments as liabilities at their fair value and adjusts the instruments to fair value at each reporting period. These liabilities are subject to re-measurement at each balance sheet date until exercised, and any change in fair value is recognized in the Company's statement of operations. The fair value of the Private Placement Warrants and the Working Capital Warrants has been determined using either the quoted price, if available, or was based on a modified Black-Scholes-Merton model. The fair value of the Private Placement Warrants and the Working Capital Warrants has been determined based on a modified Black-Scholes-Merton model for the years ended December 31, 2024 and 2023.

 Recent Accounting Pronouncements

 From time to time, new accounting pronouncements are issued by the FASB or other standard setting bodies that are adopted by Advent as of the specified effective date. Unless otherwise discussed, Advent believes that the impact of recently issued standards that are not yet effective will not have a material impact on Advent's financial position or results of operations under adoption.

 See Note 2 in the consolidated financial statements included elsewhere in this Annual Report on Form 10-K for more information about recent accounting pronouncements, the timing of their adoption and Advent's assessment, to the extent Advent has made one, of their potential impact on Advent's financial condition and results of operations.

 Supplemental Non-GAAP Measures and Reconciliations

 In addition to providing measures prepared in accordance with GAAP, we present certain supplemental non-GAAP measures. These measures are EBITDA, Adjusted EBITDA and Adjusted Net Income / (Loss), which we use to evaluate our operating performance, for business planning purposes and to measure our performance relative to that of our peers. These non-GAAP measures do not have any standardized meaning prescribed by GAAP and therefore may differ from similar measures presented by other companies and may not be comparable to other similarly titled measures. We believe these measures are useful in evaluating the operating performance of the Company's ongoing business. These measures should be considered in addition to, and not as a substitute for net income, operating expense and income, cash flows and other measures of financial performance and liquidity reported in accordance with GAAP. The calculation of these non-GAAP measures has been made on a consistent basis for all periods presented.

 EBITDA and Adjusted EBITDA

 These supplemental non-GAAP measures are provided to assist readers in determining our operating performance. We believe this measure is useful in assessing performance and highlighting trends on an overall basis. We also believe EBITDA and Adjusted EBITDA are frequently used by securities analysts and investors when comparing our results with those of other companies. EBITDA differs from the most comparable GAAP measure, net income / (loss), primarily because it does not include interest, income taxes, depreciation of property, plant and equipment, and amortization of intangible assets. Adjusted EBITDA adjusts EBITDA for items such as one-time transaction costs, asset impairment charges, fair value changes in the warrant liability.

 The following tables show a reconciliation of net loss from continuing operations to EBITDA and Adjusted EBITDA for the three months ended December 31, 2024 and 2023 and for the years ended December 31, 2024 and 2023.

 EBITDA and Adjusted EBITDA

 Three months ended December 31,

 (Unaudited)

 Years Ended December 31,

 (in Millions of US dollars)

 2024

 2023

 $ change

 2024

 2023

 $ change

 Net gain / (loss) from continuing operations

 $

 (0.77

)

 $

 (24.37

)

 23.60

 $

 (30.01

)

 $

 (50.90

)

 20.89

 Depreciation of property and equipment

 $

 0.41

 $

 0.72

 (0.31

)

 $

 1.57

 $

 2.32

 (0.75

)

 Amortization of intangibles

 $

 0.03

 $

 (0.32

)

 0.35

 $

 0.03

 $

 0.21

 (0.18

)

 $

 0.24

 $

 (0.62

)

 0.86

 $

 0.54

 $

 (0.10

)

 0.64

 Loss contingency

 $

 (0.15

)

 -

 (0.15

)

 $

 4.72

 -

 4.72

 Net gains/ (losses) on disposal/write-offs of property, plant and equipment and intangible assets

 $

 3.75

 -

 3.75

 $

 6.24

 -

 6.24

 $

 0.01

 $

 -

 0.01

 $

 0.01

 $

 0.87

 (0.86

)

 Foreign exchange differences, net

 $

 (1.57

)

 $

 0.01

 (1.58

)

 $

 0.27

 $

 (0.10

)

 0.37

 $

 -

 $

 0.12

 (0.12

)

 $

 (0.06

)

 $

 (0.08

)

 0.02

 EBITDA

 $

 1.95

 $

 (24.46

)

 26.41

 $

 (16.69

)

 $

 (47.78

)

 31.09

 Net change in warrant liability

 $

 -

 $

 (0.03

)

 0.03

 $

 (0.06

)

 $

 (0.39

)

 0.33

 $

 -

 $

 -

 -

 $

 -

 $

 9.76

 (9.76

)

 Adjusted EBITDA

 $

 1.95

 $

 (24.49

)

 26.44

 $

 (16.75

)

 $

 (38.41

)

 21.66

 Adjusted net income/(loss) from continuing operations

 This supplemental non-GAAP measure is provided to assist readers in determining our financial performance. We believe this measure is useful in assessing our actual performance by adjusting our results from continuing operations for changes in warrant liability and one-time transaction costs. Adjusted Net Loss from continuing operations differs from the most comparable GAAP measure, net loss from continuing operations, primarily because it does not include one-time transaction costs, asset impairment charges and warrant liability changes. The following table shows a reconciliation of net income/(loss) from continuing operations for three months ended December 31, 2024 and 2023 and for the years ended December 31, 2024 and 2023.

 Adjusted net loss from continuing operations

 Three months ended December 31,

 (Unaudited)

 Years Ended December 31,

 (in Millions of US dollars)

 2024

 2023

 $ change

 2024

 2023

 $ change

 $

 (0.77

)

 $

 (24.37

)

 23.60

 $

 (30.01

)

 $

 (50.90

)

 20.89

 Net change in warrant liability

 $

 -

 $

 (0.03

)

 0.03

 $

 (0.06

)

 $

 (0.39

)

 0.33

 $

 -

 $

 -

 -

 $

 -

 $

 9.76

 (9.76

)

 Adjusted net loss from continuing operations

 $

 (0.77

)

 $

 (24.40

)

 23.63

 $

 (30.07

)

 $

 (41.53

)

 11.46

 Item 7A.

 Quantitative and Qualitative Disclosures About Market Risk.

 Advent is exposed to a variety of market and other risks, including the effects of changes in interest rates and inflation, as well as risks to the availability of funding sources, hazard events and specific asset risks.

 Interest Rate Risk

 Advent holds cash and cash equivalents for working capital, investment and general corporate purposes. As of December 31, 2024, Advent had an unrestricted cash balance of approximately $0.4 million, consisting of operating and savings accounts which are not affected by changes in the general level of U.S. interest rates. Advent has short-term debt of $0.5 million but is not expected to be materially exposed to interest rate risk in the future as it intends to take on limited debt finance.

 Inflation Risk

 Advent does not believe that inflation currently has a material effect on its business. To mitigate cost increases caused by inflation, Advent has taken steps such as searching for alternative supplies at a lower cost and pre-buying materials and supplies at a more advantageous price in advance of its intended use.

 Foreign Exchange Risk

 Advent has costs and revenues denominated in Euros and therefore is exposed to fluctuations in exchange rates. To date, Advent has not entered into any hedging transactions to mitigate the effect of foreign exchange due to the relatively low exposure. As we increase in scale, we expect to continue to realize a portion of our revenues and costs in foreign currencies and therefore expect to put in place appropriate foreign exchange risk mitigation features in due course.

 Item 8.

 Financial Statements and Supplementary Data.

 This information required by this item may be found on pages F-1 through F-56 of this annual report on Form 10-K.

 Item 9.

 Changes in and Disagreements with Accountants on Accounting and Financial Disclosure.

 On September 17, 2024, EY, the Company's prior independent registered public accounting firm, was terminated. EY had served as the Company's independent registered public account firm since February 9, 2021, and also served as the independent registered public accounting firm of the Company's subsidiary, Legacy Advent, prior to the Business Combination pursuant to the Agreement and Plan of Merger.

 On September 20, 2024, the audit committee of the board of directors of the Company approved the engagement of M&K as the Company's independent registered public accounting firm to audit the Company's consolidated financial statements for the year ending December 31, 2024.

 EY's audit reports on the Company's financial statements as of and for the fiscal years ended December 31, 2023 and 2022 did not contain an adverse opinion or a disclaimer of opinion and were not qualified or modified as to uncertainty, audit scope or accounting principles, provided that EY's audit report as of and for the year ended December 31, 2023 contained an explanatory paragraph regarding the Company's ability to continue as a going concern.

 Item 9A.

 Controls and Procedures.

 Evaluation of Disclosure Controls and Procedures

 Our management, with the participation of our Chief Executive Officer (currently also serving as Interim Chief Financial Officer) has evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act), as of the end of the period covered by this Annual Report on Form 10-K.

 The term "disclosure controls and procedures," as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, means controls and other procedures of a company that are designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized, and reported, within the time periods specified in the SEC's rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the company's management, including its principal executive and principal financial officers, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure.

 Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives and our management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

 As described below, based on the evaluation of our disclosure controls and procedures as of the end of the period covered by this Annual Report on Form 10-K, management identified material weaknesses in our internal control over financial reporting. As a result of the material weaknesses, our Chief Executive Officer (currently also serving as Interim Chief Financial Officer) has concluded that, as of December 31, 2024 and 2023, our disclosure controls and procedures were not effective to provide reasonable assurance that information required to be disclosed in the reports we file and submit under the Exchange Act is recorded, processed, summarized, and reported as and when required.

 Notwithstanding this material weaknesses identified, our management, including our Chief Executive Officer (currently also serving as Interim Chief Financial Officer), has concluded that our financial statements included in this Annual Report on Form 10-K present fairly, in all material respects, our financial position, results of operations, and cash flows for the periods presented in accordance with U.S. GAAP.

 Management's Annual Report on Internal Control over Financial Reporting

 Our management is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rule 13a-15(f) or 15d-15(f) of the Exchange Act. Internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with U.S. GAAP, and includes those policies and procedures that:

 (i)

 pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of our assets;

 (ii)

 provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with U.S. GAAP, and that our receipts and expenditures are being made only in accordance with authorizations of our management and directors; and

 (iii)

 provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of our assets that could have a material effect on our financial statements.

 Because of its inherent limitations, internal control over financial reporting may not prevent or detect all misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

 Our management assessed the effectiveness of our internal control over financial reporting as of December 31, 2024 and 2023, using the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control-Integrated Framework (2013).

 Based on this assessment and the evaluation of those criteria, management, including our Chief Executive Officer (currently also serving as Interim Chief Financial Officer), concluded that our internal control over financial reporting was not effective as of December 31, 2024 and 2023, due to the material weaknesses described below.

 A material weakness (as defined in Rule 12b-2 under the Exchange Act) is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of a company's annual or interim financial statements will not be prevented or detected on a timely basis.

 Entity-Level Control Environment

 The entity-level control environment did not adequately support the prevention, detection or correction of material misstatements. We identified deficiencies in all five components of the entity-level control environment, including the control environment, control activities, information and communication, monitoring and risk assessment that aggregated into material weaknesses. Overall, we did not sufficiently establish internal control policies and procedures in our material business processes related to the financial reporting process.

 Financial Statement Close and Reporting Process

 We did not adequately design and execute controls that addressed the relevant financial statement assertions over the close and reporting process including review controls, journal entries and adjustments during the period-end reporting, changes to general ledger master data. We lacked in certain instances sufficient and appropriate documentation, reconciliation controls and segregation of duties controls.

 IT Processes

 Internal controls that address the IT risks of applications were not adequately designed and implemented. Management did not adequately perform controls or retain sufficient and appropriate evidence over 1) user access controls 2) application change controls and 3) the timeliness of segregation of duties access monitoring procedures.

 To mitigate the potential impact of material weaknesses, and prior to filing this annual report, we performed additional analysis and other post-closing procedures to determine that our consolidated financial statements are prepared in accordance with U.S. GAAP. These material weaknesses did not result in any material misstatements and there were no changes to previously released financial statements. Notwithstanding our material weaknesses, we have concluded that the financial statements and other financial information included in this Annual Report on Form 10-K fairly present in all material respects our financial position, results of operations, and cash flows for the periods presented in conformity with U.S. GAAP.

 Remediation Plan

 Following the identification of the material weaknesses in our internal control over financial reporting as of December 31, 2024 and 2023, and with the oversight of the Audit Committee of our Board of Directors, we will commence remediation efforts to enhance our control environment.

 Hiring and augmenting our team with knowledgeable and qualified IT, accounting, and finance professionals.

 Enhancing the robustness and effectiveness of our IT systems and control environment.

 Enhancing related policies and process documentation, implementing new controls or redesigning existing ones, and improving the skills of process owners.

 Training process owners, evaluating the adoption of revised policies and procedures, and monitoring results.

 Increasing the frequency and independence of testing the design and operating effectiveness of controls.

 Management are committed to successfully implementing the remediation plan as promptly as possible. Our plan can only be accomplished over time, and we can offer no assurance that these initiatives will ultimately have the intended effects. See "Risk Factors—Risks Related to Our Operations and Business — We have identified material weaknesses in our system of internal controls pursuant to Section 404 of the Sarbanes-Oxley Act of 2002. If not remediated, these material weaknesses could result in material misstatements in our consolidated financial statements. We may be unable to develop, implement and maintain appropriate controls in future periods."

 Changes in Internal Control over Financial Reporting

 Financial Statement Close and Reporting Process

 We did not adequately maintain accounting records at the consolidated level, resulting in a loss of access to underlying systems and records with the bankruptcy of Advent Technologies A/S in July 2024. The Company generated estimates using internal management reporting and bank statements as part of the September 30, 2024, close and reporting process.

 Except as otherwise noted above and also under "Remediation Plan," including the on-going remediation efforts described, there were no other changes in our internal control over financial reporting (as such term is defined in Exchange Act Rule 13a–15(f) and 15d-15(f)) during the year ended December 31, 2024, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. Our plans for remediating the material weaknesses, described above, will constitute changes in our internal control over financial reporting, prospectively, when such remediation plans are effectively implemented.

 Item 9B.

 Other Information.

 On March 3, 2025, the Company entered into a new agreement with H.C. Wainwright & Co., LLC, as exclusive underwriter, agent or advisor in any offering of the Company's securities, excluding the equity line of credit with Lincoln Park. Under the agreement, the Company will pay a cash fee to H.C. Wainwright & Co., LLC or, in case of an underwritten offering, will provide H.C. Wainwright & Co., LLC a discount of 7.0% of the aggregate gross proceeds raised at each closing of each underwritten offering. The Company has agreed to issue H.C. Wainwright & Co., LLC warrants to purchase the number of shares of common stock of the Company equal to 7.0% of the aggregate number of shares of common stock placed in each offering with a term of 5 years and an exercise price equal to 125% of the offering price per share. The Company has also agreed to reimburse H.C. Wainwright & Co., LLC up to $75 thousand for legal fees and out-of-pocket expenses and up to $150 thousand in the case of a public offering.

 Item 9C.

 Disclosure Regarding Foreign Jurisdictions that Prevent Inspections.

 None.

 Item 10.

 Directors, Executive Officers and Corporate Governance.

 Executive Officers and Board of Directors

 Our business and affairs are managed by or under the direction of our Board. The table below lists the persons who currently serve as executive officers and directors.

 Name

 Age

 Position

 Gary Herman

 Chief Executive Officer and Interim Chief Financial Officer

 Emory De Castro

 Chief Technology Officer and Director

 James F. Coffey

 Chief Operating Officer and General Counsel

 Marc Seelenfreund

 Director (Independent)

 Robert Schwartz

 Director (Independent)

 Seth Lukash

 Director (Independent)

 Joseph P. Celia

 Director (Independent)

 The following is a brief biography of each executive officer and director:

 Gary Herman has been a director of Advent since August 2024 and the Chief Executive Officer of the Company since October 2024. Mr. Herman is a seasoned investor with many years of investment and business experience. From 2005 to 2020 he co-managed the Strategic Turnaround Equity Partners, LP (Cayman) fund and its affiliates. From January 2011 to August 2013, he was a managing member of Abacoa Capital Management, LLC, which managed Abacoa Capital Master Fund, Ltd., focused on a Global-Macro investment strategy. From 2005 to 2020, Mr. Herman was affiliated with Arcadia Securities LLC, a New York-based broker-dealer. From 1997 to 2002, he was an investment banker with Burnham Securities, Inc. From 1993 to 1997, he was a managing partner of Kingshill Group, Inc., a merchant banking and financial firm with offices in New York and Tokyo. Mr. Herman has a B.S. from the University at Albany with a major in Political Science and minors in Business and Music. Mr. Herman has many years of experience serving on the boards of public and private companies. He presently sits on the boards of Siyata Mobile, Inc. (NASDAQ: SYTA), SRM Entertainment, Inc. (NASDAQ: SRM), and SusGlobal Energy Corp. (OTCQB: SNRG).

 Emory De Castro has been Advent's Chief Technology Officer since 2013. Dr. De Castro is responsible for the overall technical, manufacturing and business development operations for Advent. Prior to joining Advent, Dr. De Castro was a Vice President, Business Management and the site manager for BASF Fuel Cell Inc. in Somerset NJ. At BASF Dr. De Castro led marketing and sales, business development, quality control, and R&D direction all cumulating in nearly a four-fold increase in revenues. As the Executive Vice President at the E-TEK Division, De Nora North America he managed operations, created a global brand, and expanded the organization's fuel cell component business in Asia and Europe. Dr. De Castro has over 20 patent applications spanning fuel cell materials and catalysts, electrochemical technology, sensors, and a beer bottle cap that extends shelf life. He is the recipient of the 2024 Department of Energy Award for R&D in commercializing ion pair MEA technology; 2013 Department of Energy Award for Manufacturing R&D in lowering the cost of gas diffusion electrodes; and the 2005 ECS New Technology Award to E-TEK Division, for introducing and commercializing a new electrolysis technology. Emory De Castro received his Ph. D. from the Department of Chemistry at the University of Cincinnati and a B.S. in Chemistry from Duke University. Dr. De Castro is well-qualified to serve on our board of directors due to his extensive scientific and technological experience.

 James F. Coffey has served as General Counsel and Corporate Secretary of Advent since March 2020. Beginning in 2018, while a partner at a national Am Law 100 law firm, Jim served as Advent's outside legal counsel. Mr. Coffey has over thirty years of experience in corporate and securities law, mergers and acquisitions, venture capital and corporate finance, and intellectual property law. He has extensive international experience having closed transactions in both North and South America, Europe, and China. Throughout the course of his career, Jim has developed strong relationships and strategic contacts within the clean energy and technology sectors and specific experience in the fuel cell industry. From 2013 to 2017, he served as general counsel to another HT PEM fuel cell company that was a customer of Advent. Mr. Coffey was a Gerald L. Wallace Scholar at New York University School of Law where he received an LL.M. in Corporate Law. He received his J.D. from the New England School of Law, and his B.A., cum laude, from Providence College. Mr. Coffey is listed in The Best Lawyers in America for Mergers and Acquisitions. He is recognized for his work in intellectual property law by the IAM Patent 1000. Mr. Coffey was named a Massachusetts Super Lawyer by Law and Politics magazine. He is AV rated by Martindale-Hubbell. Mr. Coffey is a fellow of the Boston Bar Foundation and the American Bar Foundation.

 Marc Seelenfreund has been a director of Advent since August 2024. Mr. Seelenfreund is the Founder and has been the Chief Executive Officer of Siyata Mobile Inc. (NASDAQ: SYTA) since July 2015. Siyata is a leading vendor of mission critical Push to Talk Over Cellular products working with all the major cellular carriers in North America as well as in international markets. Marc has over 20 years of experience in the telecom and cellular arena as was founder of a leading telecom distribution company Accel Ltd (Tase: ACCL) representing multiple global telecom vendors in the Israeli telecom market. Marc was an officer in the IDF, received a law degree from Bar Ilan University and is the Chairman of Ono Academic College.

 Robert W. Schwartz is the Chairman & Founder of Schwartz Heslin Group, Inc., which he founded in 1985, and has been a director of the Company since January 2025. Mr. Schwartz specializes in corporate finance and M&A activities. Prior to starting Schwartz Heslin Group, he was a founder, President and Chief Executive Officer of Winsource, Inc., a venture-funded high-tech telecommunications company. In addition, he was the President and Chief Operating Officer of Coradian Corporation, an American Stock Exchange-listed company that he took public in 1979. He was also the Chief Financial Officer of Garden Way Manufacturing Corporation, a major manufacturer of outdoor power equipment. His earlier experience was with KPMG as a management consultant and with IBM. Since starting SHG, he has worked with over 750 businesses utilizing his experience in finance and general management to help achieve their objectives. Mr. Schwartz holds a BS from Cornell University and has done graduate work at The University at Albany. He has served as a director of a number of public, private and non-profit organizations; he currently serves on the boards of three corporations. He chaired The University at Albany Foundation's Council on Economic Outreach, is past non-executive chairman of the Statewide Zone Capital Corporation, a subsidiary of Pursuit, Inc., was chair of the New York State Industries for the Disabled and is a director of Dais Analytic Corporation and the Golub Corporation. Mr. Schwartz also serves on the board of Northeast Grocers, Inc., formed through the merger of Golub Corporation and Tops supermarkets. He also chairs the Audit Committee. He has been a frequent guest lecturer at universities and professional organizations and taught a graduate course in entrepreneurship at The University at Albany for 20 years. Mr. Schwartz is a graduate of Cornell University with a BS in Labor and Industrial Relations, and holds an MBA from The University of Albany.

 Seth Lukash is a seasoned corporate director, officer, and investor, and has been a director of the Company since November 2024. For 30 years he was a CEO for various technology and manufacturing companies. He was CEO and President of Tridex, Inc. (n/k/a TransAct Technologies (NASDAQ: TACT) a manufacturer of printers and peripherals to the banking, lottery/gaming, and retail sales markets. Mr. Lukash was Chairman and CEO of Progressive Software, a large provider of application software to the restaurant and hospitality industry. After the sale and divestiture of these companies he advised several technology companies. He has served as an advisor to OEM Capital a boutique investment banking firm and Strategic Turnaround Equity Partners, LP, a fund focused on investments in undervalued public companies. For the past two years he has advised an AI start-up with their organization and structuring for additional financing. He started his finance career as a research analyst for Carter Berlind & Weil. Mr. Lukash is a graduate of the University of Miami with a BA in Finance.

 Joseph P. Celia is a technology industry veteran with 30 years of experience with an impressive track record in building strategic partnerships, driving new business initiatives, and penetrating new markets, and has been a director of the Company since November 2024. His dynamic and results-oriented approach in sales leadership within the rapidly evolving tech sector has consistently led to significant achievements. Mr. Celia has held executive and senior-level sales management positions at some of the tech industry's most respected organizations, including Hewlett Packard, Motorola, 3Com, Symbol Technologies, Bradford Networks, Accton Technology, and FIS Global. Mr. Celia has a BS from Northeastern University in Computer Technology.

 Board Composition

 Our authorized board of directors consists of seven members. In accordance with the second amended and restated certificate of incorporation, our board of directors is divided into three classes, Classes I, II and III, each to serve a three-year term. At each annual meeting of stockholders, the successors to directors whose terms then expire will be elected to serve from the time of election and qualification until the third annual meeting following the election. Directors will not be able to be removed during their term except for cause. The directors are divided among the three classes as follows:

 the Class I directors is Robert Schwartz, and his term will expire at the annual meeting of stockholders to be held in 2027

 the Class II directors are Marc Seelenfreund, Seth Lukash and Joseph Celia, and their terms will expire at the annual meeting of stockholders to be held in 2025 and

 the Class III directors are Gary Herman and Emory De Castro, and their terms will expire at the annual meeting of stockholders to be held in 2026.

 We expect that any additional directorships resulting from an increase in the number of directors will be distributed among the three classes so that, as nearly as possible, each class will consist of one-third of the directors. The division of the board of directors into three classes with staggered three-year terms may delay or prevent a change of our management or a change in control.

 Director Independence

 The board of directors has determined that each of Mr. Seelenfreund, Mr. Lukash, Mr. Celia and Mr. Schwartz are independent directors as defined in Nasdaq rules and the applicable SEC rules. For further information, see "Item 13. Certain Relationships and Related Transactions, and Director Independence."

 Board Leadership Structure

 The Board has not appointed a Chairman or Lead Director to the Board. Our Board has concluded that our current leadership structure is appropriate at this time. However, our Board will continue to periodically review our leadership structure and may make such changes in the future as it deems appropriate.

 Committees of the Board of Directors

 The board of directors has the authority to appoint committees to perform certain management and administration functions. The Board has established an audit committee, compensation committee and nominating and corporate governance committee.

 Audit Committee

 Our audit committee consists of Mr. Lukash, Mr. Seelenfreund and Mr. Celia. The board of directors has determined that each member is independent under the Nasdaq Capital Market listing standards and Rule 10A-3(b)(1) under the Exchange Act. The chairperson of our audit committee is Mr. Lukash. Our board of directors has determined that Mr. Lukash qualifies as an "audit committee financial expert" as such term is defined in Item 407(d)(5) of Regulation S-K and possesses financial sophistication, as defined under the rules of Nasdaq Capital Market.

 The primary purpose of the audit committee is to discharge the responsibilities of the board of directors with respect to our accounting, financial, and other reporting and internal control practices and to oversee our independent registered accounting firm. Specific responsibilities of our audit committee include:

 selecting a qualified firm to serve as the independent registered public accounting firm to audit our financial statements

 helping to ensure the independence and performance of the independent registered public accounting firm

 discussing the scope and results of the audit with the independent registered public accounting firm, and reviewing, with management and the independent accountants, our interim and year-end operating results

 developing procedures for employees to submit concerns anonymously about questionable accounting or audit matters

 reviewing policies on risk assessment and risk management

 reviewing related party transactions;

 obtaining and reviewing a report by the independent registered public accounting firm at least annually, that describes our internal quality-control procedures, any material issues with such procedures, and any steps taken to deal with such issues when required by applicable law; and

 by the independent registered public accounting firm

 Compensation Committee

 The compensation committee consists of Mr. Lukash and Mr. Celia. The chairperson of the compensation committee is Mr. Celia. The primary purpose of the compensation committee is to discharge the responsibilities of the board of directors to oversee its compensation policies, plans and programs and to review and determine the compensation to be paid to its executive officers, directors and other senior management, as appropriate.

 Specific responsibilities of the compensation committee include:

 reviewing and approving on an annual basis the corporate goals and objectives relevant to our Chief Executive Officer's compensation, evaluating our Chief Executive Officer's performance in light of such goals and objectives and determining and approving the remuneration (if any) of our Chief Executive Officer based on such evaluation;

 reviewing and approving the compensation of our other executive officers;

 reviewing and recommending to our board of directors the compensation of our directors;

 reviewing our executive compensation policies and plans;

 reviewing and approving, or recommending that our board of directors approve, incentive compensation and equity plans, severance agreements, change-of-control protections and any other compensatory arrangements for our executive officers and other senior management, as appropriate;

 selecting independent compensation consultants and assessing whether there are any conflicts of interest with any of the committee's compensation advisors;

 assisting management in complying with our proxy statement and Annual Report disclosure requirements;

 if required, producing a report on executive compensation to be included in our annual proxy statement;

 reviewing and establishing general policies relating to compensation and benefits of our employees and

 reviewing our overall compensation philosophy.

 Nominating and Corporate Governance Committee

 Our nominating and corporate governance committee consists of Mr. Lukash and Mr. Celia. The board of directors has determined each proposed member is independent under Nasdaq listing standards. The chairperson of our nominating and corporate governance committee is Mr. Lukash.

 Specific responsibilities of our nominating and corporate governance committee include:

 identifying, evaluating and selecting, or recommending that our board of directors approve, nominees for election to our board of directors

 evaluating the performance of our board of directors and of individual directors;

 reviewing developments in corporate governance practices;

 evaluating the adequacy of our corporate governance practices and reporting

 reviewing management succession plans and

 developing and making recommendations to our board of directors regarding corporate governance guidelines and matters.

 Code of Business Conduct and Ethics

 The Company's Code of Business Conduct and Ethics applies to all of its employees, officers and directors, including those officers responsible for financial reporting. The Code of Business Conduct and Ethics is available on its website at www.advent.energy. Information contained on or accessible through such website is not a part of this Annual Report, and the inclusion of the website address in this Annual Report is an inactive textual reference only. The Company intends to disclose any amendments to the Code of Business Conduct and Ethics, or any waivers of its requirements, on its website to the extent required by the applicable rules and exchange requirements.

 Delinquent Section 16(a) Reports

 Section 16(a) of the Exchange Act requires our directors, executive officers and beneficial owners of more than 10% of our Common Stock to file with the Commission initial reports of ownership and reports of changes in ownership of our securities. Based solely upon a review of these filings, all Section 16(a) filing requirements applicable to such persons were complied with during 2024 on a timely basis with the following exceptions: Mr. Seth Lukash's Form 3 was due to be filed on September 8, 2024, but was not filed until March 11, 2025; Mr. Seth Herman's Form 3 was due to be filed on September 8, 2024, but was not filed until March 11, 2025; Mr. Joseph Celia's Form 3 was due to be filed on September 8, 2024, but was not filed until March 11, 2025; Mr. Marc Seelenfreund's Form 3 was due to be filed on September 8, 2024, but was not filed until March 11, 2025; Mr. Robert Schwartz's Form 3 was due to be filed on January 10, 2025, but was not filed until March 11, 2025; Mr. Avtar Dhaliwal's Form 3 was due to be filed on August 30, 2024, but was not filed until April 2, 2025; and Mr. Avtar Dhaliwal's Form 4 was due to be filed on December 31, 2024, but was not filed until April 2, 2025.

 Item 11.

 Executive Compensation.

 Summary Compensation Table

 The following table sets forth certain information about the compensation paid or accrued during the years ended December 31, 2024 and 2023 to our Chief Executive Officer and each of our two most highly compensated executive officers other than our Chief Executive Officer who were serving as executive officers at December 31, 2024, and whose annual compensation exceeded $100,000 during such year or would have exceeded $100,000 during such year if the executive officer were employed by the Company for the entire fiscal year (collectively the "named executive officers" or "NEOs").

 Name and Principal Position

 Fiscal
Year

 Salary
($)

 Bonus
($)

 Stock
Awards
($)

 Option
Awards
($)

 Non-Equity
Incentive Plan
Compensation
($)

 All Other Compensation
($)

 Total
($)

 Gary Herman*

 Chief Executive Officer and Interim Chief Financial Officer

 2024

 $

 -

 -

 -

 -

 -

 -

 $

 -

 Vassilios Gregoriou**

 2024

 $

 -

 -

 -

 -

 -

 $

 Former Chairman of the Board of Directors, Chief Executive Officer and Acting Chief Financial Officer

 2023

 $

 -

 -

 -

 -

 -

 $

 James Coffey**

 2024

 $

 475,000

 -

 -

 -

 -

 -

 $

 475,000

 Chief Operating Officer and General Counsel

 2023

 $

 475,000

 -

 -

 -

 -

 -

 $

 475,000

 Emory De Castro**

 2024

 $

 350,000

 -

 -

 -

 -

 -

 $

 350,000

 Chief Technology Officer & Director

 2023

 $

 350,000

 -

 -

 -

 -

 -

 $

 350,000

 *

 Gary Herman, Chief Executive Officer, did not receive any compensation during the year ended December 31, 2024, and his current compensation package is being finalized.

 **

 The compensation amounts set forth above reflect earned compensation, however, the executives elected to forgo compensation payments beginning in June 2024. Such deferred compensation is reflected as an accrued liability for the balance owed.

 Narrative Disclosure to Summary Compensation Table

 Compensation Philosophy and Objectives

 The Company operates in a dynamic and rapidly evolving environment, which requires a highly-skilled and technical workforce. As a result, the Company places great emphasis on its ability to attract, retain, and motivate top talent in the industry. The Company achieves these objectives by creating an appropriate balance between achieving short-term results and creating long-term sustainable value to shareholders that reinforces the linkage between pay and performance.

 Elements of Executive Compensation

 The compensation of executives of the Company includes three main elements: (i) base salary; (ii) an annual bonus; and (iii) long-term equity incentives. Perquisites and personal benefits are not a significant element of compensation for the Company's executive officers.

 Base Salaries

 Base salary is provided as a fixed source of compensation for the Company's executive officers. Adjustments to base salaries are reviewed annually and as warranted throughout the year to reflect promotions or other changes in the scope of an executive officer's role or responsibilities, as well as to maintain market competitiveness.

 Dr. Gregoriou's annual base salary was $800,000; Mr. Coffey's annual base salary was $475,000; Mr. De Castro's annual base salary was $350,000; and Mr. Herman did not receive any compensation for the year ended December 31, 2024.

 Annual Bonuses

 In 2024, the named executive officers were each eligible to receive an annual cash incentive award, based on the achievement of pre-approved key performance objectives determined by the Compensation Committee.

 As provided in their respective employment agreements, the target bonus amount for Dr. Gregoriou was 150% of his base salary and for Mr. Coffey and Mr. De Castro was 100% of their base salaries. Actual bonus payouts vary based on Compensation Committee assessment of executive performance versus pre-established key performance indicators.

 Management, at its discretion, decided there will not be performance related bonus payouts for fiscal year 2024.

 Equity Compensation

 In 2021, the Company adopted the Advent Technologies Holdings, Inc. 2021 Incentive Plan (the "2021 Equity Incentive Plan"). The 2021 Equity Incentive Plan advances the Company's interests by providing for the grant to our employees, directors, consultants and advisors of stock options, SARs, restricted and unrestricted stock and stock units, performance awards and other awards that are convertible into or otherwise based on our common stock. On April 29, 2024, the Company's stockholders approved an amendment to the 2021 Equity Incentive Plan to increase the number of shares of common stock issuable under the 2021 Equity Incentive Plan from 230,530 to 569,306.

 Following the Business Combination, on June 11, 2021, the Compensation Committee made grants to select senior executives. The grants were made to recognize each executive's role and contributions to date, including outstanding efforts towards a successful transaction, as well as to incentivize and to retain the executives, and to further align them with the post-Business Combination stockholders. The Compensation Committee elected to not make any additional annual grants in 2023 and 2024 to the NEOs.

 In recognition of Dr. Gregoriou's role and contributions related to the ratification of GreenHiPo by the EU, the Compensation Committee, in July 2022, granted a one-time special award of 5,833 time-vested restricted stock units ("RSUs") and stock options to purchase 5,833 shares of common stock to Dr. Gregoriou.

 Employment Agreements

 Advent is a party to certain offer letters with each of the named executive officers that set forth the initial terms and conditions of the officer's employment with Advent, each of which has since been superseded by new employment agreements as described in "Executive Compensation-Employment Agreements and Other Arrangements with Executive Officers and Directors-Employment and Consulting Arrangements with Executive Officers and Directors" below. The material terms of these offer letters are summarized below.

 Dr. Gregoriou entered into an employment agreement with the Company on October 12, 2020 to receive an annual base salary of $800,000, a one-time signing bonus of $500,000, and eligibility to receive an annual performance bonus of cash. Dr. Gregoriou is eligible to participate in the Company's 2021 Equity Incentive Plan. Mr. Gregoriou was terminated from all of his positions with the Company as of October 24, 2024.

 Mr. Coffey. As described in further detail in the "Executive Compensation-Employment Agreements and Other Arrangements with Executive Officers and Directors-Employment and Consulting Arrangements with Executive Officers and Directors" section of this report, in connection with the announcement of the Business Combination, Mr. Coffey entered into an employment agreement with Advent, which became effective as of the consummation of the Business Combination.

 Mr. De Castro. As described in further detail in the "Executive Compensation-Employment Agreements and Other Arrangements with Executive Officers and Directors-Employment and Consulting Arrangements with Executive Officers and Directors" section of this report, in connection with the announcement of the Business Combination, Mr. De Castro entered into an employment agreement with Advent, which became effective as of the consummation of the Business Combination.

 Employee Benefits

 The Company sponsors an employee savings plan under Section 401(k) of the Internal Revenue Code. Subsequent to the Business Combination, the Company made matching contributions equal to 100% of the participant's pre-tax contribution up to a maximum of 5% of the participant's eligible earnings for U.S employees. Total expense related to the Company's defined contribution plan was $0.1 million and $0.2 million for the years ended December 31, 2024 and 2023.

 As described in Note 2 of the Company's audited consolidated financial statements for fiscal years 2024 and 2023, pursuant to Greek Labor Law 2112/1920, employees in Greece are entitled to an indemnity in the event of dismissal or retirement, though as a former director, Dr. Gregoriou was not eligible for such indemnity.

 Pay versus Performance

 The following tables and related disclosures provide information about (i) the "total compensation" of our principal executive officer ("PEO"), and our other named executive officers (the "Other NEOs" or the "Non-PEO NEOs") as presented in the table under "Executive Compensation – Summary Compensation", (ii) the "compensation actually paid" to our PEO and our Other NEOs, as calculated pursuant to the SEC's pay-versus-performance rules, (iii) certain financial performance measures, and (iv) the relationship of the "compensation actually paid" to those financial performance measures.

 This disclosure has been prepared in accordance with Item 402(v) of Regulation S-K under the Securities Exchange Act of 1934, as amended, and does not necessarily reflect value actually realized by the executives or how our compensation committee evaluates compensation decisions in light of company or individual performance.

 Summary
Compensation
Table Total for
PEO (1)

 Compensation
Actually Paid
to PEO (3)

 Average Summary
Compensation Table
Total for
NEOs (2)

 Average
Compensation Actually
Paid to
NEOs (3)

 Value of Initial
Fixed $100
Investment Based On
Total Shareholder
Return (4)

 Net
Loss (5)

 2024

 $

 $

 424,713

 $

 412,500

 $

 403,682

 $

 (97.58

)

 $

 (40,994

)

 2023

 $

 $

 (1,263,182

)

 $

 425,000

 $

 (95,031

)

 $

 (96.77

)

 $

 (71,397

)

 2022

 $

 1,697,750

 $

 (4,533,070

)

 $

 425,000

 $

 (1,589,095

)

 $

 (73.77

)

 $

 (74,337

)

 (1)

 The dollar amounts reported are the amounts of total compensation reported for Vassilios Gregoriou, our Chief Executive Officer/PEO, for each corresponding year in the "Total" column of the Summary Compensation Table. Refer to "Executive Compensation—Summary Compensation Table." Gary Herman, the Company's current Chief Executive Officer/PEO did not receive any compensation during 2024 or prior.

 (2)

 The dollar amounts reported represent the average of the amounts reported for our company's Non-PEO NEOs as a group (excluding Mr. Gregoriou and Mr. Herman) in the "Total" column of the Summary Compensation Table in each applicable year. The names of each of the named executive officers (excluding Mr. Gregoriou and Mr. Herman) included for purposes of calculating the average amounts in each applicable year are as follows: Mr. Coffey and Mr. De Castro for 2024, and Mr. Coffey and Mr. Brackman for 2023 and 2022.

 (3)

 The dollar amounts reported represent the amount of "compensation actually paid" to our PEO and Non-PEO NEOs as computed in accordance with Item 402(v) of Regulation S-K. The dollar amounts do not reflect the actual amount of compensation earned by or paid during the applicable year. In accordance with the requirements of Item 402(v) of Regulation S-K, the following adjustments were made to total compensation for each year to determine the compensation actually paid:

 Stock Awards

 Option Awards

 (4)

 Cumulative total shareholder return ("TSR") is calculated by dividing the sum of the cumulative amount of dividends for the measurement period, assuming dividend reinvestment, and the difference between our company's share price at the end and the beginning of the measurement period by our company's share price at the beginning of the measurement period. No dividends were paid on stock or option awards in 2022, 2023 or 2024.

 (5)

 The dollar amounts reported represent the amount of net loss reflected in our consolidated audited financial statements for the applicable year.

 2024

 PEO

 Average
 NEOs

 Summary Compensation Table Totals for Non-PEO NEOs

 $

 $

 412,500

 Add (Subtract):

 Fair value of equity awards granted during the year from the Summary Compensation Table

 -

 -

 Fair value at year end of equity awards granted during the year

 -

 -

 Change in fair value of equity awards granted in prior years that were unvested as of the end of the year

 -

 (4,409

)

 Change in fair value of equity awards granted in prior years that vested during the year

 -

 (4,409

)

 Deduct the amount of fair value at the end of the prior fiscal year for awards granted in prior years that forfeited during the covered fiscal year (1)

 (375,287

)

 -

 Compensation Actually Paid Totals

 $

 424,713

 $

 403,682

 (1)

 On October 24, 2024, Mr. Gregoriou's termination for cause resulted in the forfeiture of 36,217 shares of vested stock options and 36,217 shares of vested restricted stock units, as well as 10,601 unvested stock options and 10,601 unvested restricted stock units.

 2023

 PEO

 Average
NEOs

 Summary Compensation Table Totals for Non-PEO NEOs

 $

 $

 425,000

 Add (Subtract):

 Fair value of equity awards granted during the year from the Summary Compensation Table

 -

 -

 Fair value at year end of equity awards granted during the year

 -

 -

 Change in fair value of equity awards granted in prior years that were unvested as of the end of the year

 (1,415,428

)

 (346,687

)

 Change in fair value of equity awards granted in prior years that vested during the year

 (647,754

)

 (173,344

)

 Compensation Actually Paid Totals

 $

 (1,263,182

)

 $

 (95,031

)

 2022

 PEO

 Average
NEOs

 Summary Compensation Table Totals for Non-PEO NEOs

 $

 1,697,750

 $

 425,000

 Add (Subtract):

 Fair value of equity awards granted during the year from the Summary Compensation Table

 (897,750

)

 -

 Fair value at year end of equity awards granted during the year

 537,133

 -

 Change in fair value of equity awards granted in prior years that were unvested as of the end of the year

 (4,402,652

)

 (1,510,571

)

 Change in fair value of equity awards granted in prior years that vested during the year

 (1,467,551

)

 (503,524

)

 Compensation Actually Paid Totals

 $

 (4,533,070

)

 $

 (1,589,095

)

 Analysis of the Information Presented in the Pay Versus Performance Table

 In accordance with Item 402(v) of Regulation S-K, the graphs below compare the compensation actually paid to our PEO and the average of the compensation actually paid to our remaining NEOs, with (i) our TSR, and (ii) our net loss, in each case, for the fiscal years ended December 31, 2024, 2023 and 2022. TSR amounts reported in the graph assume an initial fixed investment of $100.

 A portion of our PEOs' compensation consists of equity awards. As a result, the change between the values disclosed in our Summary Compensation Table and Compensation Actually Paid tends to be directionally aligned with changes in our TSR.

 While we are required by SEC rules to disclose the relationship between our net income and Compensation Actually Paid to our NEOs, this is not a metric our compensation committee currently uses in evaluating our NEOs' compensation as we are a company that has not generated any gross profit.

 All information provided above under the "Pay Versus Performance" heading will not be deemed to be incorporated by reference in any filing of our company under the Securities Act of 1933, as amended, whether made before or after the date hereof and irrespective of any general incorporation language in any such filing.

 Other Compensation Policies

 Stock Ownership/Holding Policy

 The Company maintains meaningful stock ownership guidelines to reinforce the importance of stock ownership. These guidelines are intended to align the interests of executives and shareholders and to focus the executives on our long-term success. Under these guidelines, each of our active executives and non-employee directors must own shares in accordance with the following schedule:

 Role

 Required Ownership Level

 Chief Executive Officer and Chairman

 6.0x Base Salary

 Other Executive Officers

 3.0x Base Salary

 Non-Employee Directors

 3.0x Annual Cash Retainer

 Shares that count towards satisfying the ownership requirements include:

 Shares owned by the executive/director, including those obtained through the vesting of restricted stock units and performance stock units;

 Shares owned jointly by the executive/director and spouse or held in trust established by the; executive/director for the benefit of the executive/director and/or family members;

 Unvested time-based restricted stock units;

 Note: Unvested performance stock units and unexercised stock options do not count towards satisfying stock ownership requirements.

 Each executive or non-employee director has 5 years to meet the ownership guidelines starting from when the executive/director first becomes subject to the policy. Executives/directors who do not meet the ownership guidelines after 5 years of being subject to the guidelines are expected to retain 50% of net shares (i.e., shares remaining after payment of taxes) upon vesting or exercise of stock options until they meet the guidelines. Executive and Non-Employee Directors are either already in compliance with the stock ownership guidelines or expected to be within the 5-year timeframe.

 Prohibition on Pledging and Hedging, Insider Trading Policy

 The Company maintains a comprehensive Insider Trading Policy that includes a prohibition on pledging Company securities or holding Company securities in a margin account. Additionally, the policy prohibits engaging in hedging, monetization and similar transactions in respect of Company securities. This policy, applicable to all officers, directors and associates, was put in place to ensure that the interests of these individuals remain aligned with those of stockholders, and that they continue to have the incentive to execute the Company's long-term plans and achieve the performance for which their equity awards are intended.

 Employment Agreements and Other Arrangements with Executive Officers and Directors

 Employment Agreements

 On October 12, 2020, in connection with the execution of the Merger Agreement and the announcement of the Business Combination Advent entered into employment agreements, with each of Dr. Gregoriou and Mr. Coffey. The material terms of these employment agreements are set forth below:

 Dr. Gregoriou served as our Chief Executive Officer (also served temporarily as Acting Chief Financial Officer) and Chairman of our board of directors, with an initial annual base salary of $800,000, a one-time signing bonus of $500,000, and beginning in fiscal year 2021, eligibility to earn an annual performance bonus with a target equal to 150% of his annual base salary.

 Mr. Coffey serves as our Chief Operating Officer and General Counsel, with an annual base salary of $475,000, a one-time signing bonus of $250,000, and beginning in fiscal year 2021, eligibility to earn an annual performance bonus with a target equal to 100% of his annual base salary.

 Mr. De Castro serves as our Chief Technology Officer, with an annual base salary of $350,000, a one-time signing bonus of $250,000, and beginning in fiscal year 2021, eligibility to earn an annual performance bonus with a target equal to 100% of his annual base salary.

 The sign-on bonuses were paid in two installments: (i) 50% on the first payroll date following the consummation of the Business Combination and (ii) 50% on the first payroll date following the one-year anniversary of the consummation of the Business Combination, subject to the applicable executive's employment through the relevant payment date.

 The employment agreements provide that if an executive's employment terminates without "cause" or by him for "good reason," (as such terms are defined in the employment agreement or term sheet, as applicable), the executive will be entitled to (i) up to 12 months' subsidized medical, dental and vision benefits continuation (18 months for Dr. Gregoriou) and (ii) payment of one times (two times for Dr. Gregoriou) the sum of such executive's annual base salary and target bonus, payable over 12 months. If such termination of employment without "cause" or resignation for "good reason" occurs within 60 days prior to, or 12 months following, a "change in control" (as such term is defined in the 2021 Equity Incentive Plan), severance is enhanced and provides for (i) up to 18 months' subsidized medical, dental and vision benefits continuation for all executives, (ii) two times (three times for Dr. Gregoriou) the sum of such executive's annual base salary and target bonus, payable over 12 months, and (iii) the initial grant of stock options and restricted stock units issued pursuant to the 2021 Equity Incentive Plan, shall become fully vested, and such options will remain exercisable for a period of one year following such termination of employment. Moreover, if the acquirer in such "change in control" does not agree to assume or substitute for equivalent stock options, any unvested portion of the initial grant of stock options shall become fully vested and exercisable at the time of such transaction.

 The employment agreements for Dr. Gregoriou, Mr. Coffey and Mr. De Castro each contain (i) a perpetual confidentiality covenant, (ii) an assignment of intellectual property covenant, (iii) a non-competition covenant for one year post-termination of employment (subject to, for Dr. Gregoriou, the Executive's receipt of at least 50% of the Executive's highest annualized base salary within the two (2) year period preceding termination) for the entire year, (iv) a covenant not to solicit any of our customers, vendors, suppliers or other business partners during the eighteen (18)-month period following termination and (v) a covenant not to solicit any of our employees or independent contractors during the eighteen (18)-month period following termination.

 Dr. Gregoriou was terminated for cause from his position as Chief Executive Officer of the Company on October 24, 2024.

 Non-Competition Agreements

 Simultaneously with the execution and delivery of the Merger Agreement, certain insider Advent stockholders entered into non-competition and non-solicitation agreements for the benefit of the Company, Advent and each of their respective present and future affiliates, successors and subsidiaries (each, a " Non-Competition Agreement "), to become effective at the Closing, pursuant to which the Advent stockholder party thereto agreed not to compete with the Company, Advent and their respective affiliates during the three (3) year period following the Closing in North America or the European Union (including Greece) or in any other markets in which the Company and Advent are engaged. The Advent stockholder party thereto also agreed during such three (3) year restricted period to not solicit employees or customers of such entities. The Non-Competition Agreement also contains customary confidentiality and non-disparagement provisions.

 Outstanding Equity Awards at Fiscal Year End

 The following table provides information with respect to awards held by the named executive officers as of December 31, 2024.

 Option Awards

 Stock Awards

 Name

Securities
Underlying
Unexercised
Options (#)
Exercisable

Securities
Underlying
Unexercised
Options (#)
Unexercisable

 Option
Exercise
Price ($)

 Option
Expiration
Date

Shares or
Units of Stock
that Have Not
Vested (#)

 Market
Value of
Shares or
Units of Stock
That Have Not
Vested ($) ( 3)

 Emory De Castro (1)(2)

 8,645

 2,882

 $

 310.80

 6/11/2031

 2,882

 $

 14,410

 James Coffey (1)(2)

 8,645

 2,882

 $

 310.80

 6/11/2031

 2,882

 $

 14,410

 (1)

 Option awards vest 25% upon each anniversary of February 4, 2021, the vesting commencement date, until the fourth anniversary of the vesting commencement date.

 (2)

 Stock awards consist of grants of restricted stock units that vest 25% upon each anniversary of February 4, 2021, the vesting commencement date, until the fourth anniversary of the vesting commencement date.

 (3)

 Market value of restricted stock unit awards is based on the closing price of $5.00 per share on December 31, 2024 on the Nasdaq Capital Market.

 Director Compensation

 Pursuant to offer letters with each of the Company's former non-employee directors (the "Director Offer Letters"), each director receives an annual retainer of $100,000, to be paid quarterly in arrears. In addition, each former non-employee director is eligible to receive an annual grant of stock awards for a number of shares of Company common stock determined by dividing $100,000 by the closing price per share of Company common stock on the applicable grant date. Each of the employee directors who served as members of the board of directors of the Company in 2024 did not receive any additional compensation for director services.

 The Company's non-employee directors who joined the board on or after August 30, 2024, are not currently entitled to receive any compensation with respect to their board service.

 The following table sets forth all compensation paid to or earned by each non-employee director of the Company during fiscal year 2024.

 December 31, 2024

 Name

 Fees Earned or
Paid in
Cash
 ($)

 Stock
Awards
($) (1)(2)

 Total
 ($)

 Anggelos Skutaris

 $

 57,222

 $

 25,861

 $

 83,083

 Lawrence Epstein

 $

 57,222

 $

 25,861

 $

 83,083

 Wayne Threatt

 $

 57,222

 $

 25,861

 $

 83,083

 Von McConnell

 $

 57,222

 $

 25,861

 $

 83,083

 (1)

 The amounts disclosed above reflect the full grant date fair values in accordance with FASB ASC Topic 718. See "Note 16 – Stock-Based Compensation Plans" to our consolidated financial statements for the year ended December 31, 2024.

 (2)

 On July 26, 2024, the Company granted to each non-employee director a total of 5,747 restricted stock units.

 Policy for Granting Certain Option Awards

 The Company does not have a formal policy regarding the granting of stock options. When granting stock options the Board takes into consideration any material non-public information when discussing and ultimately determining the date on which the options will be granted. In 2024 no options were granted during the four business day period prior to, or one business day following, the filing of the Company's periodic reports or the filing or furnishing of a Form 8-K that discloses material non-public information.

 Item 12.

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

 The following table sets forth information known to the Company regarding the beneficial ownership of our common stock as of June 2, 2025 by:

 each person known to us to be the beneficial owner of more than 5% of outstanding common stock;

 each of our named executive officers and directors; and

 all executive officers and directors as a group

 Beneficial ownership is determined according to the rules of the SEC, which generally provide that a person has beneficial ownership of a security if he, she or it possesses sole or shared voting or investment power over that security, including options and warrants that are currently exercisable or exercisable within 60 days. Stock issuable upon exercise of options and warrants currently exercisable within 60 days are deemed outstanding solely for purposes of calculating the percentage of total voting power of the beneficial owner thereof.

 The beneficial ownership of Company common stock is based on 2,670,286 shares of common stock outstanding as of June 2, 2025.

 Unless otherwise indicated, the Company believes that each person named in the table below has sole voting and investment power with respect to all shares of Company common stock beneficially owned by them.

 Name and Address of Beneficial Owner

 %

 Directors and Executive Officers:

 Emory De Castro (1)

 91,975

 3.4

 James F. Coffey (2)

 40,772

 1.5

 All directors and executive officers as a group (two individuals) ( 3)

 132,747

 5.0

 Five percent holders:

 Vassilios Gregoriou (4)

 212,256

 7.9

 (1)

 Share amount includes 17,289 shares issuable upon exercise of options.

 (2)

 Share amount includes an aggregate of 17,289 shares issuable upon exercise of options.

 (3)

 Share amount includes an aggregate of 34,578 shares issuable upon exercise of options. Unless otherwise indicated, the business address of each of the individuals is 5637 La Ribera St., Suite A, Livermore, CA 94550.

 (4)

 Pursuant to an SEC Form 4 filed with the SEC on September 8, 2023, Mr. Vassilios Gregoriou, the former Chief Executive Officer and former Chairman of the Board, has sole voting and dispositive power over such shares.

 Equity Compensation Plan Table

 The following table summarizes our equity compensation plan information as of December 31, 2024. Information is included for equity compensation plans approved by our stockholders and equity compensation plans not approved by our stockholders.

 Plan Category

 (a)
Number of securities
to be issued upon
exercise of outstanding options,
warrants and rights

 (b)
Weighted-average
exercise price per
share of outstanding options,
warrants and rights

 (c)
Number of securities
remaining available
for future issuance
under equity compensation
plans

 Equity compensation plans approved by stockholders

 70,007

 $

 243.43

 370,091

 Equity compensation plans not approved by stockholders

 -

 $

 -

 -

 Total

 70,007

 $

 243.43

 370,091

 Item 13.

 Certain Relationships and Related Transactions, and Director Independence.

 There have been certain transactions, as disclosed below, since January 1, 2023 to which we have been a participant in which the amount involved, exceeded or will exceed $120,000, and in which any of our directors, executive officers or holders of more than 5% of our capital stock, or any members of their immediate family, had or will have a direct or indirect material interest, other than compensation arrangements which are described under "Executive Officer and Director Compensation."

 Balances with related parties

2024

 June 2,
2025

 Due to related parties

 Emory S. De Castro (Chief Technology Officer and Director)

 Total

 $

 $

 The outstanding balance as of December 31, 2024, due to Mr. De Castro, the Company's Chief Technology Officer and member of the Board of Directors, relates to a short-term promissory note with the Company. The note is due by August 31, 2026 and bears interest at a rate of 5.00% per annum. The promissory note dated August 9, 2024, had an original principal balance of $128 thousand. As of December 31, 2024, and June 2, 2025, the Company did not make any payments against the outstanding principal or accrued interest pursuant to this note.

 Director Independence

 Our Board has determined that four (4) of our directors, Messrs. Schwartz, Seelenfreund, Lukash and Celia are independent directors in accordance with the listing requirements of the Nasdaq Capital Market, or Nasdaq. Under the rules of the Nasdaq Capital Market, independent directors must comprise a majority of a listed company's board of directors within one year of the completion of its initial public offering. In addition, the rules of the Nasdaq Capital Market require that, subject to specified exceptions, each member of a listed company's audit and compensation committees be independent and that director nominees be selected or recommended for the board's selection by independent directors constituting a majority of the independent directors or by a nominating and corporate governance committee comprised solely of independent directors. Under the rules of the Nasdaq Capital Market, a director will only qualify as "independent" if, in the opinion of that company's board of directors, that person does not have a relationship that would interfere with the exercise of independent judgment in carrying out the responsibilities of a director and that such person is "independent" as defined by the applicable rules of the Nasdaq Capital Market and the Exchange Act.

 Audit committee members must also satisfy the independence criteria set forth in Rule 10A-3 under the Exchange Act. In order to be considered independent for purposes of Rule 10A-3, a member of an audit committee of a listed company may not, other than in his or her capacity as a member of the audit committee, the board of directors or any other board committee: (1) accept, directly or indirectly, any consulting, advisory or other compensatory fee from the listed company or any of its subsidiaries or (2) be an affiliated person of the listed company or any of its subsidiaries.

 Based upon information requested from and provided by each director concerning his background, employment and affiliations, including family relationships, our board of directors has determined that four of our directors are "independent directors" as defined under applicable rules of the Nasdaq Capital Market, including, in the case of all the members of our audit committee, the independence criteria set forth in Rule 10A-3 under the Exchange Act, and in the case of all the members of our compensation committee, the independence criteria set forth in Rule 10C-1 under the Exchange Act. In making such determination, our board of directors considered the relationships that each such non-employee director has with our Company and all other facts and circumstances that our board of directors deemed relevant in determining his or her independence, including the beneficial ownership of our capital stock by each non-employee director. Mr. Herman is not an independent director under these rules because he is our Chief Executive Officer. Emory De Castro is not an independent director under these rules because he is our Chief Technology Officer.

 Item 14.

 Principal Accounting Fees and Services.

 On September 17, 2024, EY, the Company's prior independent registered public accounting firm, was terminated. EY had served as the Company's independent registered public account firm since February 9, 2021, and also served as the independent registered public accounting firm of the Company's subsidiary, Advent Technologies Inc. (the "Prior Company") prior to the Prior Company's business combination with the Company pursuant to that certain Agreement and Plan of Merger dated as of October 12, 2020, as amended (the "Business Combination").

 On September 20, 2024, the audit committee of the board of directors of the Company approved the engagement of M&K as the Company's independent registered public accounting firm to audit the Company's consolidated financial statements for the year ending December 31, 2024.

 EY's audit reports on the Company's financial statements as of and for the fiscal years ended December 31, 2023 and 2022 did not contain an adverse opinion or a disclaimer of opinion and were not qualified or modified as to uncertainty, audit scope or accounting principles, provided that EY's audit report as of and for the year ended December 31, 2023 contained an explanatory paragraph regarding the Company's ability to continue as a going concern.

 The following is a summary of fees paid or to be paid to EY and, to the extent applicable, M&K, for services rendered for the years ended December 31, 2024 and 2023.

 Audit Fees. Audit fees consist of fees for professional services rendered for the audit of our year-end financial statements and services that are normally provided by M&K and EY in connection with regulatory filings. The aggregate fees of M&K and EY related to audit and review services totaled $81,000 for the year ended December 31, 2024 and $778,745 for the year ended December 31, 2023. The above amounts include interim procedures and audit fees, as well as attendance at audit committee meetings.

 Audit-Related Fees. Audit-related fees consist of fees billed for assurance and related services that are reasonably related to performance of the audit or review of our financial statements and are not reported under "Audit Fees." These services include attest services that are not required by statute or regulation and consultations concerning financial accounting and reporting standards. With respect to audit-related work that was performed for financial statements pertaining to the years ended December 31, 2024 and December 31, 2023, we paid M&K and EY nil and $155,886, respectively, in audit-related fees.

 Tax Fees. Tax Fees consist of $19,464 for tax compliance services performed by EY for Advent Technologies GmbH for the year ended December 31, 2023.

 All Other Fees. We did not pay M&K or EY for any other services for each of the year ended December 31, 2024 and December 31, 2023.

 Pre-Approval Policy

 Our audit committee is responsible for approving or pre-approving all auditing services (including comfort letters and statutory audits) and all permitted non-audit services by the independent auditor and pre-approve the related fees. Pursuant to its charter, the audit committee delegated to each of its members, acting singly, the authority to pre-approve any audit services if the need for consideration of a pre-approval request arises between regularly scheduled meetings, with such approval presented to the audit committee at its next scheduled meeting or as soon as practicable thereafter.

 Item 15.

 Exhibits, Financial Statement Schedules.

 (1) Financial Statements

 For a list of the financial information included herein, see Index to the Financial Statements on page F-1.

 (2) Financial Statement Schedules:

 All financial statement schedules have been omitted because they are not applicable, not required or the information required is shown in the financial statements or the notes thereto.

 (3) Exhibits.

 The following is a list of exhibits filed as part of this Annual Report on Form 10-K.

 Exhibit Number

 Description

 2.1

 Agreement and Plan of Merger, dated as of October 12, 2020 by and among AMCI, our sponsor, in its capacity as Purchaser Representative thereunder, Advent and Vassilios Gregoriou in his capacity as Seller Representative thereunder (incorporated by reference to Exhibit 2.1 of AMCI Acquisition Corp.'s Registration Statement on Form S-4/A (Reg. No. 333-250946), filed with the SEC on January 14, 2021).

 2.2

 First Amendment to Agreement and Plan of Merger, dated as of October 19, 2020, by and among AMCI, our sponsor, in its capacity as Purchaser Representative thereunder, Advent and Vassilios Gregoriou in his capacity as Seller Representative thereunder (incorporated by reference to Exhibit 2.2 of AMCI Acquisition Corp.'s Registration Statement on Form S-4/A (Reg. No. 333-250946), filed with the SEC on January 14, 2021).

 2.3

 Second Amendment to Agreement and Plan of Merger, dated as of December 31, 2020, by and among AMCI, our sponsor, in its capacity as Purchaser Representative thereunder, Advent and Vassilios Gregoriou in his capacity as Seller Representative thereunder (incorporated by reference to Exhibit 2.3 of AMCI Acquisition Corp.'s Registration Statement on Form S-4/A (Reg. No. 333-250946), filed with the SEC on January 14, 2021).

 3.1

 Second Amended and Restated Certificate of Incorporation of Advent Technologies Holdings, Inc. (incorporated by reference to Exhibit 3.1 of the Company's Current Report on Form 8-K, filed with the SEC on February 9, 2021).

 3.2

 Certificate of Amendment to the Second Amended and Restated Certificate of Incorporation of Advent Technologies Holdings, Inc. (incorporated by reference to Exhibit 3.1 of the Company's Current Report on Form 8-K, filed with the SEC on June 20, 2023).

 3.3

 Certificate of Amendment to the Second Amended and Restated Certificate of Incorporation of Advent Technologies Holdings, Inc. (incorporated by reference to Exhibit 3.1 of the Company's Current Report on Form 8-K, filed with the SEC on May 16, 2024).

 3.4

 Second Amended and Restated Bylaws of Advent Technologies Holdings, Inc. (incorporated by reference to Exhibit 3.1 of the Company's Current Report on Form 8-K, filed with the SEC on September 9, 2022).

 4.1

 Warrant Agreement, dated November 15, 2018 by and between AMCI Acquisition Corp. and Continental Stock Transfer & Trust company, as warrant agent (incorporated by reference to Exhibit 4.1 of AMCI Acquisition Corp.'s Registration Statement on Form S-4/A (Reg. No. 333-250946), filed with the SEC on January 14, 2021).

 4.2

 Specimen Common Stock Certificate (incorporated by reference to Exhibit 4.2 of AMCI Acquisition Corp.'s Registration Statement on Form S-1/A (Reg. No. 333-227994), filed with the SEC on November 9, 2018).

 4.3

 Specimen Warrant Certificate (incorporated by reference to Exhibit 4.3 of AMCI Acquisition Corp.'s Registration Statement on Form S-1/A (Reg. No. 333-227994), filed with the SEC on November 9, 2018).

 4.4

 Description of Securities (incorporated by reference to Exhibit 4.4 of the Company's Annual Report on Form 10-K, filed with the SEC on May 20, 2021).

 10.1

 Registration Rights Agreement, dated November 15, 2018, by and among AMCI, our sponsor and the holders party thereto (incorporated by reference to Exhibit 10.3 of AMCI Acquisition Corp's Current Report on Form 8-K, filed with the SEC on November 20, 2018).

 10.2+

 Employment Agreement, dated as of October 12, 2020, by and between Advent Technologies Inc. and Vassilios Gregoriou (incorporated by reference to Exhibit 10.7 of the Company's Current Report on Form 8-K, filed with the SEC on February 9, 2021).

 10.3+

 Employment Agreement, dated as of October 12, 2020, by and between Advent Technologies Inc. and Emory De Castro (incorporated by reference to Exhibit 10.10 of the Company's Current Report on Form 8-K, filed with the SEC on February 9, 2021).

 10.4+

 Employment Agreement, dated as of October 12, 2020, by and between Advent Technologies, Inc. and James F. Coffey (incorporated by reference to Exhibit 10.11 of the Company's Current Report on Form 8-K, filed with the SEC on February 9, 2021).

 10.5+

 Form of Indemnification Agreement (incorporated by reference to Exhibit 10.13 of the Company's Current Report on Form 8-K, filed with the SEC on February 9, 2021).

 10.6+

 Form of Director Offer Letters (incorporated by reference to Exhibit 10.14 of the Company's Current Report on Form 8-K, filed with the SEC on February 9, 2021).

 10.9

 2021 Equity Incentive Plan (incorporated by reference to Exhibit 10.12 of the Company's Current Report on Form 8-K filed with the SEC on February 9, 2021)

 10.10

 Lease Agreement, dated as of September 2, 2019, by and between Advent Technologies S.A. and Patras Science Park S.A. (English summary of Greek original) (incorporated by reference to Exhibit 10.5 of the Company's Current Report on Form 8-K, filed with the SEC on February 9, 2021).

 10.11

 Lease Agreement, dated as of September 25, 2019, by and between Advent Technologies S.A. and Patras Science Park S.A. (English summary of Greek original) (incorporated by reference to Exhibit 10.6 of the Company's Current Report on Form 8-K, filed with the SEC on February 9, 2021).

 10.12

 Lease
 Agreement, dated as of August 30, 2021, by and between Advent Technologies GmbH and fisher group SE & Co., KG (English
 summary of German original) (incorporated by reference to Exhibit 10.21 of the Company's Annual Report on Form 10-K,
 filed with the SEC on March 31, 2022).

 10.14

 Purchase Agreement, dated as of April 10, 2023, by and between Advent Technologies Holdings, Inc. and Lincoln Park Capital Fund, LLC (incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K, filed with the SEC on April 11, 2023).

 10.15

 Registration Rights Agreement, dated as of April 10, 2023, by and between Advent Technologies Holdings, Inc. and Lincoln Park Capital Fund, LLC (incorporated by reference to Exhibit 10.2 to the Company's Current Report on Form 8-K, filed with the SEC on April 11, 2023).

 10.16

 Form of Securities Purchase Agreement, dated December 22, 2023, by and between Advent Technologies Holdings, Inc. and those certain purchasers named therein (incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K, filed with the SEC on December 27, 2023).

 14.1*

 Code of Business Conduct and Ethics

 16.1

 Letter from EY to the SEC dated October 1, 2024 (incorporated by reference to Exhibit 16.1 to the Company's Current Report on Form 8-K/A, filed with the SEC on October 1, 2024).

 19.1*

 Insider Trading Policy

 21.1*

 List of Subsidiaries

 23.1*

 Consent of Independent Registered Public Accounting Firm - M&K CPAS, PLLC

 23.2*

 Consent of Independent Registered Public Accounting Firm - Ernst & Young (Hellas)

 31.1*

 Certification of Principal Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a)

 31.2*

 Certification of Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a)

 32.1**

 Certification of Principal Executive Officer Pursuant to 18 U.S.C. Section 1350

 32.2**

 Certification of Principal Financial Officer Pursuant to 18 U.S.C. Section 1350

 97.1*

 Advent Technologies Holdings, Inc. Clawback Policy

 101.INS*

 101.SCH*

 101.CAL*

 101.LAB*

 101.PRE*

 104*

 *

 Filed herewith.

 **

 Furnished herewith

 +

 Indicated a management or compensatory plan, contract or arrangement.

 Item 16.

 Form 10-K Summary.

 None.

 SIGNATURES

 Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

 Advent Technologies Holdings, Inc.

 By:

 /s/ Gary Herman

 Name:

 Gary Herman

 Title:

 Chief Executive Officer

 Name

 Position

 Date

 /s/ Gary Herman

 Chief Executive Officer, Interim Chief Financial Officer and Director

 Gary Herman

 /s/ Emory De Castro

 Chief Technology Officer and Director

 Emory De Castro

 /s/ Marc Seelenfreund

 Director

 Marc Seelenfreund

 /s/ Robert Schwartz

 Director

 Robert Schwartz

 /s/ Seth Lukash

 Director

 Seth Lukash

 /s/ Joseph P. Celia

 Director

 Joseph P. Celia

 INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

 Page

 Report of Independent Registered Public Accounting Firm (PCAOB ID Number 2738)

 Report of Independent Registered Public Accounting Firm (PCAOB ID Number 1457)

 Consolidated Balance Sheets as of December 31, 2024 and 2023

 Consolidated Statements of Operations for the years ended December 31, 2024 and 2023

 Consolidated Statements of Comprehensive Loss for the years ended December 31, 2024 and 2023

 Consolidated Statements of Changes in Stockholders' Equity / (Deficit) for the years ended December 31, 2024 and 2023

 Consolidated Statements of Cash Flows for the years ended December 31, 2024 and 2023

 Notes to the Consolidated Financial Statements

 F- 1

 REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

 To the Board of Directors and Stockholders of
 Advent Technologies Holdings, Inc.

 Opinion on the Financial Statements

 We have audited the accompanying consolidated balance sheets of Advent Technologies Holdings, Inc. (the Company) as of December 31, 2024, and the related consolidated statements of operations, comprehensive loss, stockholders' equity (deficit), and cash flows for the period ended December 31, 2024, and the related notes (collectively referred to as the financial statements). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2024, and the results of its operations and its cash flows for the period ended December 31, 2024, in conformity with accounting principles generally accepted in the United States of America. The financial statements of Advent Technologies Holdings, Inc., as of December 31, 2023, were audited by other auditors whose report dated August 13, 2024, expressed an unqualified opinion on those financial statements.

 Going Concern

 The accompanying financial statements have been prepared assuming the Company will continue as a going concern. As discussed in Note 1 to the financial statements, the Company has yet to achieve profitable operations, has negative cash flows from operating activities, and is dependent upon future issuances of equity or other financings to fund ongoing operations all of which raises substantial doubt about its ability to continue as a going concern. Management's plans regarding these matters are also described in Note 1. The financial statements do not include any adjustments that might result from the outcome of this uncertainty.

 Basis for Opinion

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

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

 Our audits included performing procedures to assess the risks of material misstatement of the 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 financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

 Critical Audit Matters

 The critical audit matter communicated below is a matter arising from the current period audit of the 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 financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of the critical audit matter does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing separate opinions on the critical audit matter or on the accounts or disclosures to which it relates.

 F- 2

 Revenue Recognition

 As discussed in the notes to the financial statements, the Company recognizes revenue upon transfer of control of promised services to customers in an amount that reflects the consideration the Company expects to receive in exchange for those products or services.

 Auditing management's evaluation of agreements with customers involves significant judgement, given the fact that some agreements require management's evaluation and allocation of the standalone transaction prices to the performance obligation.

 To evaluate the appropriateness and accuracy of the assessment by management, we evaluated management's assessment in relationship to the relevant agreements.

 The procedures performed included evaluation of the methods and assumptions used by the Company, tests of the data used and an evaluation of the findings. We evaluated and tested the Company's significant judgments that determine the impairment evaluation of intangible assets.

 /s/ M&K CPAS, PLLC

 We have served as the Company's auditor since 2024.

 The Woodlands, TX

 F- 3

 Report of Independent Registered Public Accounting Firm

 To the Stockholders and the Board of Directors of

 Advent Technologies Holdings, Inc.

 Opinion on the Financial Statements

 We have audited the accompanying consolidated balance sheets of Advent Technologies Holdings, Inc. (the Company) as of December 31, 2023, the related consolidated statements of operations, comprehensive loss, stockholders' equity and cash flows for the year ended December 31, 2023, and the related notes (collectively referred to as the "consolidated financial statements"). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company at December 31, 2023, and the results of its operations and its cash flows for the year ended December 31, 2023, in conformity with U.S. generally accepted accounting principles.

 The Company's Ability to Continue as a Going Concern

 The accompanying consolidated financial statements have been prepared assuming that the Company will continue as a going concern. As discussed in Note 1 to the consolidated financial statements, the Company has suffered recurring operating losses, has a negative working capital position and has stated that substantial doubt exists about the Company's ability to continue as a going concern. Management's evaluation of the events and conditions and management's plans regarding these matters are also described in Note 1. The consolidated financial statements do not include any adjustments to reflect the possible future effects on the recoverability and classification of assets or the amounts and classification of liabilities that may result from the outcome of this uncertainty. As explained below, auditing the Company's evaluation and associated disclosures of its ability to continue as a going concern was a critical audit matter.

 Basis for Opinion

 These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's 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 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 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 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 financial statements. We believe that our audit provide a reasonable basis for our opinion.

 Critical Audit Matter

 The
critical audit matter communicated below is a matter arising from the current period audit of the financial statements that was communicated
or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the financial
statements and (2) involved our especially challenging, subjective or complex judgments. The communication of the critical audit matter
does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the
critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it
relates.

 F- 4

 Going Concern

 Description of the Matter

 As described in "The Company's Ability to Continue as a Going Concern" section of our report and as described further in Note 1 to the consolidated financial statements, the Company has suffered recurring operating losses, has a negative working capital position, and its ability to meet its liquidity needs will largely depend on raising capital in the very short term and to generate cash from operations in the future. If the Company is unable to obtain sufficient funding, it could be required to delay its operational efforts, limit activities and reduce research and development, which could adversely affect its business prospects and delivery of contractual obligations. Accordingly, the Company has determined that these factors raise substantial doubt as to the Company's ability to continue as a going concern for a period of one year from the date these consolidated financial statements are issued. The Company intends to continue to fund its business by way of operating cash flows, as well as equity raisings and loan financing. However, the Company has concluded that these plans do not alleviate the substantial doubt related to its ability to continue as a going concern.

 Auditing the Company's evaluation and associated disclosures of its ability to continue as a going concern involved complex auditor judgment, because the projections and associated assumptions with regards to the timing and probability of future cash flows, including external funding, have a high degree of uncertainty. Evaluating the adequacy of the Company's disclosures to reflect the uncertainty and risks pertaining to the Company's going concern position, also required complex auditor judgment and increased effort.

 How We Addressed the Matter in Our Audit

 To
 test the Company's evaluation and associated disclosures of its ability to continue as a going concern, we performed audit
 procedures that included, amongst others, evaluating the timing and probability of the cash inflows and outflows in the
 Company's cashflow projections (revenues, grants, operating expenses and inflows from loan and equity financing) by, where
 possible, agreeing cash flow projections to underlying contracts or other third-party documentation. In order to reflect the
 uncertainty inherent in the projections, we performed our own sensitivity analyses on projected cashflows, which included
 adjustments to the timing and amounts forecasted by the Company, based on historical data for operating expenses, historical
 information regarding the timing of revenues and grants and to reflect the uncertainty of financing inflows. We also assessed the
 Company's cashflow projections in the context of other evidence obtained during the audit, to determine whether it supported
 or contradicted the assumptions made by the Company. To assess the adequacy of the disclosures related to the going concern
 assessment, among other procedures, we compared the Company's disclosures of the uncertainties pertaining to its cash flow
 projections, to the results of the sensitivity analyses we performed.

 /s/ Ernst & Young (Hellas) Certified Auditors Accountants S.A.

 We served as the Company's auditor from 2020 to 2024.

 Athens, Greece

 August 13, 2024

 except for the presentation of discontinued operations as described in Note 24, as to which the date is June 6, 2025

 F- 5

 CONSOLIDATED BALANCE SHEETS

 ( Amounts in USD thousands, except share and per share amounts)

 2024

 2023

 ASSETS

 Current assets:

 Cash and cash equivalents

 $

 $

 3,200

 Restricted cash, current

 -

 Accounts receivable, net

 Contract assets

 Inventories

 Prepaid expenses and Other current assets

 Assets of discontinued operations

 -

 4,430

 Total current assets

 2,693

 8,835

 Non-current assets:

 Intangibles, net

 Property and equipment, net

 4,638

 20,833

 Right-of-use assets

 3,157

 Restricted cash, non-current

 -

 Other non-current assets

 Available for sale financial asset

 -

 -

 Assets of discontinued operations

 -

 Total non-current assets

 5,314

 25,902

 Total assets

 $

 8,007

 $

 34,737

 LIABILITIES AND STOCKHOLDERS' EQUITY/(DEFICIT)

 Current liabilities:

 Trade and other payables

 $

 16,730

 $

 3,996

 Due to related parties

 -

 Deferred income from grants, current

 Contract liabilities

 3,187

 Loss contingency liabilities

 5,126

 -

 Other current liabilities

 2,210

 1,035

 Operating lease liabilities

 2,138

 Short-term loan payable, net of discount

 -

 Income tax payable

 Liabilities of discontinued operations

 -

 3,628

 Total current liabilities

 28,772

 11,913

 Non-current liabilities:

 Warrant liability

 -

 Long-term operating lease liabilities

 8,218

 Defined benefit obligation

 Deferred income from grants, non-current

 Other long-term liabilities

 Liabilities of discontinued operations

 -

 Total non-current liabilities

 9,376

 Total liabilities

 29,302

 21,289

 Commitments and contingent liabilities

 Stockholders' equity/(deficit)

 Common stock ($ 0.0001 par value per share; Shares authorized: 500,000,000 and 110,000,000 at December 31, 2024 and December 31, 2023, respectively; Issued and outstanding: 2,636,508 and 2,580,159 at December 31, 2024 and December 31, 2023, respectively)

 -

 Preferred stock ($ 0.0001 par value per share; Shares authorized: 1,000,000 at December 31, 2024 and December 31, 2023; nil 0 issued and outstanding at December 31, 2024 and December 31, 2023)

 -

 -

 Additional paid-in capital

 199,015

 194,933

 Accumulated other comprehensive loss

 ( 157

)

 ( 2,334

)

 Accumulated deficit

 ( 220,153

)

 ( 179,159

)

 Total stockholders' equity/(deficit)

 ( 21,295

)

 13,448

 Total liabilities and stockholders' equity/(deficit)

 $

 8,007

 $

 34,737

 The accompanying notes are an integral part of these consolidated financial statements.

 F- 6

 CONSOLIDATED STATEMENTS OF OPERATIONS

 (Amounts in USD thousands, except share and per share amounts)

 2024

 2023

 $

 3,276

 $

 1,536

 ( 1,488

)

 ( 6,964

)

 Gross profit (loss)

 1,788

 ( 5,428

)

 1,582

 ( 3,225

)

 ( 7,567

)

 ( 14,318

)

 ( 28,825

)

 Amortization of intangibles

 ( 29

)

 ( 207

)

 ( 3,617

)

 ( 1,048

)

 -

 ( 9,763

)

 ( 18,369

)

 ( 50,713

)

 ( 535

)

 ( 272

)

 Loss Contingency

 ( 4,724

)

 -

 Net gains/ (losses) on disposal/write-offs of property, plant and equipment and intangible assets

 ( 6,235

)

 -

 ( 870

)

 Loss before income taxes

 ( 30,069

)

 ( 50,984

)

 ( 30,014

)

 ( 50,902

)

)

 ( 20,495

)

 $

)

 $

)

 Net loss per share

 $

 ( 11.46

)

 $

 ( 26.55

)

 Basic loss per share from discontinued operations

 ( 4.19

)

 ( 10.69

)

 Basic loss per share

 ( 15.65

)

 ( 37.24

)

 $

 ( 11.46

)

 $

 ( 26.55

)

 Diluted loss per share from discontinued operations

 ( 4.19

)

 ( 10.69

)

 Diluted loss per share

 ( 15.65

)

 ( 37.24

)

 The accompanying notes are an integral part of these consolidated financial statements.

 F- 7

 CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS

 (All amounts in USD thousands)

 2024

 2023

 $

)

 $

)

 Other comprehensive income / (loss), net of tax effect:

 Foreign currency translation adjustments

 ( 125

)

 Actuarial gains / (losses)

 -

 Total other comprehensive income / (loss) from continuing operations

 ( 110

)

 Other comprehensive loss from discontinued operations

 ( 83

)

 Total other comprehensive loss

 Comprehensive loss

 $

 ( 40,419

)

 $

 ( 71,127

)

 The accompanying notes are an integral part of these consolidated financial statements.

 F- 8

 CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY / (DEFICIT)

 ( Amounts in USD thousands, except share amounts)

 Preferred Stock
 Series A

 Preferred Stock
 Series Seed

 Common
 Stock

 Additional
 Paid-in
 Capital

Deficit

OCI

 Total
 Stockholders'
(Deficit)
 Equity

 Balance as of December 31, 2022

 -

 $

 -

 -

 $

 -

 1,723,924

 $

 $

 174,509

 $

 ( 107,762

)

 $

 ( 2,604

)

 $

 64,148

 Issuance of common stock

 -

 -

 -

 -

 824,352

 9,998

 -

 -

 10,000

 Stock issued under stock compensation plan

 -

 -

 -

 -

 31,883

 -

 -

 -

 Stock based compensation expense

 -

 -

 -

 -

 -

 -

 9,881

 -

 -

 9,881

 Reclassification of private warrants

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

)

 -

)

 Other comprehensive income

 -

 -

 -

 -

 -

 -

 -

 -

 Balance as of December 31, 2023

 -

 $

 -

 -

 $

 -

 2,580,159

 $

 $

 194,933

 $

 ( 179,159

)

 $

 ( 2,334

)

 $

 13,448

 Reclassification of par to APIC

 -

 -

 -

 -

 -

 ( 8

)

 -

 -

 -

 Issuance of common stock

 -

 -

 -

 -

 56,727

 -

 -

 -

 Reduction of fractional shares due to reverse stock split

 ( 378

)

 -

 -

 -

 -

 -

 Stock based compensation expense

 -

 -

 -

 -

 -

 -

 3,783

 -

 -

 3,783

 Disposal of subsidiaries

 -

 -

 -

 -

 -

 -

 -

 -

 1,602

 1,602

 -

 -

 -

 -

 -

 -

 -

)

 -

)

 Other comprehensive income

 -

 -

 -

 -

 -

 -

 -

 -

 Balance as of December 31, 2024

 -

 $

 -

 -

 $

 -

 $

 -

 $

 199,015

 $

 ( 220,153

)

 $

 ( 157

)

 $

 ( 21,295

)

 The accompanying notes are an integral part of these consolidated financial statements.

 F- 9

 CONSOLIDATED STATEMENTS OF CASH FLOWS

 (All amounts in USD thousands)

 2024

 2023

 Cash flows from operating activities:

 $

)

 $

)

 Net loss from discontinued operations

)

 ( 20,495

)

 ( 30,014

)

 ( 50,902

)

 Adjustments to reconcile net loss to net cash flows (used in)/provided by operating activities:

 Depreciation of property and equipment

 1,564

 2,325

 Amortization of intangible assets

 Impairment loss of tangible and intangible assets and goodwill

 -

 9,763

 Credit loss allowance

 3,617

 1,048

 Provision for litigation expenses

 4,724

 -

 Fair value gain of warrant liability

 ( 59

)

 ( 394

)

 Stock-based compensation expense

 3,783

 9,881

 Issuance of commitment shares

 -

 Benefit for current and deferred income taxes

 ( 55

)

 ( 82

)

 Net losses on disposal/write-offs of property, plant and equipment and intangible assets

 6,235

 Provision for inventories

 ( 32

)

 4,962

 Net periodic cost of defined benefit obligation

 Changes in operating assets and liabilities:

 Decrease/(increase) in accounts receivable

 Decrease/(increase) in contract assets

 ( 613

)

 Decrease/(increase) in inventories

 Decrease/(increase) in prepaid expenses and other current assets

 Decrease/(increase) in other non-current assets

 ( 2,479

)

 5,676

 (Decrease)/increase in trade payables

 9,528

 ( 5,522

)

 (Decrease)/increase in due to related parties

 -

 (Decrease)/increase in deferred income from grants

 ( 162

)

 -

 Increase in loss contingency liability

 -

 (Decrease)/increase in contract liabilities

 2,787

 (Decrease)/increase in other current liabilities

 1,236

 ( 724

)

 (Decrease) in income tax payable

 -

 ( 9

)

 (Decrease) in other long-term liabilities

 -

 ( 16

)

 Operating lease asset and liabilities

 ( 450

)

 ( 828

)

 Net cash provided by/(used in) operating activities from continuing operations

 $

 1,398

 $

 ( 20,976

)

 Cash flows from investing activities:

 Proceeds from sale of property and equipment

 1,294

 Purchases of property and equipment

 ( 36

)

 ( 2,443

)

 Purchases of intangible assets

 ( 47

)

 -

 Advances for the acquisition of property and equipment

 -

 ( 1,255

)

 Acquisition of subsidiaries

 -

 ( 1,864

)

 Net cash provided by/(used in) investing activities from continuing operations

 $

 1,211

 $

 ( 5,309

)

 Cash flows from financing activities:

 Issuance of common stock and paid-in capital, net of issuance costs paid

 9,059

 Proceeds from borrowings

 -

 Repayments of debt

 ( 101

)

 -

 Net cash provided by financing activities from continuing operations

 $

 $

 9,059

 Net increase/(decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents from continuing operations

 $

 3,459

 $

 ( 17,226

)

 Effect of exchange rate changes on cash, cash equivalent, restricted cash and restricted cash equivalents

 Net cash provided by / (used in) discontinued operations:

 Cash used in operating activities

 ( 8,011

)

 ( 11,138

)

 Cash used in investing activities

 ( 38

)

 ( 926

)

 Cash provided by financing activities

 -

 Net cash used in discontinued operations

 ( 7,506

)

 ( 12,064

)

 Net decrease in cash, cash equivalents, restricted cash and restricted cash equivalents

 ( 3,669

)

 ( 29,207

)

 Cash, cash equivalents, restricted cash and restricted cash equivalents, beginning of year

 4,050

 33,619

 Cash, cash equivalents, restricted cash and restricted cash equivalents, end of year

 $

 $

 4,412

 Reconciliation to Consolidated Balance Sheets:

 Cash and cash equivalents

 $

 $

 3,200

 Restricted cash, current

 -

 Restricted cash, non-current

 -

 Cash, cash equivalents, restricted cash and restricted cash equivalents

 $

 $

 4,050

 Cash, cash equivalents, restricted cash and restricted cash from continuing operations

 $

 $

 4,050

 Cash, cash equivalents, restricted cash and restricted cash from discontinued operations

 -

 Cash, cash equivalents, restricted cash and restricted cash equivalents

 $

 $

 4,412

 Supplemental Cash Flow Information

 Cash activities

 Interest paid

 $

 $

 Income taxes paid/(refunded)

 $

 ( 55

)

 $

 ( 82

)

 The accompanying notes are an integral part of these consolidated financial statements.

 F- 10

 NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

 AS OF DECEMBER 31, 2024

 (Expressed in U.S. Dollars)

 1. Basis of presentation:

 Overview

 Advent Technologies Holdings, Inc. and its subsidiaries (collectively referred to as "Advent" or the "Company") is an advanced materials and technology development company operating in the fuel cell and hydrogen technology space. Advent develops, manufactures and assembles the critical components that determine the performance of hydrogen fuel cells and other energy systems. To date, Advent's principal operations have been to develop and manufacture Membrane Electrode Assembly (MEA), and fuel cell stacks and complete fuel cell systems for a range of customers in the stationary power, portable power, automotive, aviation, energy storage and sensor markets.

 Advent has its headquarters in Livermore, California, and the Company has MEA and fuel cell product development facilities in Livermore, California and Patras, Greece. Previously, the Company's headquarters were located in Boston, Massachusetts. During 2023, the Company decided to consolidate certain of its German operations with its operations in Greece. During June 2024, the Company closed its facilities in Boston, Massachusetts, and no longer maintains its facilities in Denmark and the Philippines due to the bankruptcy of Advent Technologies A/S in July 2024.

 On February 4, 2021 ("Closing Date"), AMCI Acquisition Corp. ("AMCI"), consummated the previously announced business combination (the "Business Combination") pursuant to that certain merger agreement (the "Agreement and Plan of Merger"), dated October 12, 2020, by and among AMCI, AMCI Merger Sub Corp., a Delaware corporation and newly formed wholly-owned subsidiary of AMCI ("Merger Sub"), AMCI Sponsor LLC (the "Sponsor"), solely in the capacity as the representative from and after the effective time of the Business Combination for the stockholders of AMCI, Advent Technologies, Inc., a Delaware corporation ("Legacy Advent"), and Vassilios Gregoriou, solely in his capacity as the representative from and after the effective time for the Legacy Advent stockholders (the "Seller Representative"), as amended by Amendment No. 1 and Amendment No. 2 to the Agreement and Plan of Merger, dated as of October 19, 2020 and December 31, 2020, respectively, by and among AMCI, Merger Sub, Sponsor, Legacy Advent, and Seller Representative. In connection with the closing of the Business Combination (the "Closing"), AMCI acquired 100 % of the stock of Legacy Advent (as it existed immediately prior to the Closing) and its subsidiaries.

 On the Closing Date, and in connection with the closing of the Business Combination, AMCI changed its name to Advent Technologies Holdings, Inc. (the "Company" or "Advent"). Legacy Advent was deemed the accounting acquirer in the Business Combination based on an analysis of the criteria outlined in Accounting Standards Codification ("ASC") 805. This determination was primarily based on Legacy Advent's stockholders prior to the Business Combination having a majority of the voting interests in the combined company, Legacy Advent's operations comprising the ongoing operations of the combined company, Legacy Advent's board of directors comprising a majority of the board of directors of the combined company, and Legacy Advent's senior management comprising the senior management of the combined company. Accordingly, for accounting purposes, the Business Combination was treated as the equivalent of Legacy Advent issuing stock for the net assets of AMCI, accompanied by a recapitalization. The net assets of AMCI are stated at historical cost, with no goodwill or other intangible assets recorded.

 While AMCI was the legal acquirer in the Business Combination, because Legacy Advent was deemed the accounting acquirer, the historical financial statements of Legacy Advent became the historical financial statements of the combined company, upon the consummation of the Business Combination. As a result, the consolidated financial statements included in this report reflect (i) the historical operating results of Legacy Advent prior to the Business Combination; (ii) the results of the Company (combined results of AMCI and Legacy Advent) following the closing of the Business Combination; (iii) the assets and liabilities of Legacy Advent at their historical cost; and (iv) Company's equity structure for all periods presented.

 F- 11

 In accordance with guidance applicable to these circumstances, the equity structure has been restated in all comparative periods up to the Closing Date, to reflect the number of shares of the Company's common stock, $ 0.0001 par value per share, issued to Legacy Advent's stockholders in connection with the recapitalization transaction. As such, the shares and corresponding capital amounts and earnings per share related to Legacy Advent Preferred Stock ("Preferred Series A" and "Preferred Series Seed") and Legacy Advent common stock prior to the Business Combination have been retroactively restated as shares reflecting the exchange ratio established in the Business Combination Agreement. Activity within the statement of changes in stockholders' equity / (deficit) for the issuances of Legacy Advent's Preferred Stock, were also retroactively converted to Legacy Advent common stock.

 On February 18, 2021, Advent Technologies, Inc. entered into a Membership Interest Purchase Agreement with Bren-Tronics, Inc. ("Bren-Tronics") and UltraCell, LLC ("UltraCell"), a Delaware limited liability company and a direct wholly owned subsidiary of Bren-Tronics (the "UltraCell Purchase Agreement").

 UltraCell LLC was renamed to Advent Technologies LLC following its acquisition by the Company.

 On June 25, 2021, the Company entered into a Share Purchase Agreement (the "Purchase Agreement"), with F.E.R. fischer Edelstahlrohre GmbH, a limited liability company incorporated under the Laws of Germany (the "Seller") to acquire all of the issued and outstanding equity interests in SerEnergy A/S, a Danish stock corporation and a wholly-owned subsidiary of the Seller ("SerEnergy") and fischer eco solutions GmbH, a German limited liability company and a wholly-owned subsidiary of the Seller ("FES") together with certain outstanding shareholder loan receivables.

 SerEnergy and FES were renamed to Advent Technologies A/S and Advent Technologies GmbH, respectively, following their acquisition by the Company.

 The consolidated financial statements of the Company have been prepared to reflect the consolidation of the companies listed below:

 Schedule of subsidiaries in consolidation

 Country of

 Ownership Interest

 Statements of Operations

 Company Name

 Incorporation

 Direct

 Indirect

 2024

 2023

 Advent Technologies, Inc.

 USA

 %

 -

 Advent Technologies S.A.

 Greece

 -

 %

 Advent Technologies LLC

 USA

 -

 %

 Advent Technologies GmbH

 Germany

 %

 -

 On July 25, 2024, Advent Technologies A/S was declared bankrupt by the court in Aalborg, Denmark. The petition was brought by IDA, the union of engineers for 402,000. As the Company did not have the ability to pay the full amount due, the Danish court declared Advent Technologies A/S bankrupt. Advent Technologies A/S and its wholly owned subsidiary Advent Green Energy Philippines, Inc. will be liquidated by the court appointed trustee to settle all claims under the bankruptcy. The Company anticipates it will receive no residual assets. As a result of their bankruptcy, Advent Technologies A/S and Advent Green Energy Philippines, Inc. (collectively referred to as the "Discontinued Subsidiaries") have been presented as discontinued operations in the accompanying financial statements.

 Going Concern

 The accompanying consolidated financial statements have been prepared assuming the Company will continue as a going concern. The Company considers that the going concern basis is appropriate for the preparation of its consolidated financial statements, as it is pursuing additional fund raising as disclosed below and has no intentions to proceed with liquidation. The going concern basis of presentation assumes that the Company will continue in operation one year from the date these consolidated financial statements are issued and will be able to realize its assets and discharge its liabilities and commitments in the normal course of business. As such, the accompanying audited consolidated financial statements do not include any adjustments relating to the recoverability and classification of assets and their carrying amounts, or the amount and classification of liabilities that may result should the Company be unable to continue as a going concern.

 F- 12

 In accordance with the Financial Accounting Standards Board ("FASB") Accounting Standards Update ("ASU") 2014-15, Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern (Subtopic 205-40), the Company has evaluated whether there are conditions and events, considered in the aggregate, that raise substantial doubt about the Company's ability to continue as a going concern for one year from the date that the consolidated financial statements are issued. The Company's ability to meet its liquidity needs will largely depend on its ability to raise capital in the very short term and generate cash in the future. During the year ended December 31, 2024, the Company generated $1.4 million of cash in operating activities, and the Company's ability to raise and generate adequate capital and cash in the future is subject to general economic, financial, competitive, legislative, regulatory, and other factors that are beyond the Company's control. Furthermore, the Company has suffered recurring operating losses and has a net working capital position of $( 26.1) million as of December 31, 2024. In addition, as of the issuance date of these consolidated financial statements the Company is overdue in a number of its obligations which could give the right to creditors at any time from the issuance date of these consolidated financial statements to raise legal action against the Company which in turn could potentially lead to liquidation action against the Company and/or its subsidiaries. The transition to profitability and positive cash flow is highly dependent upon the successful development, approval, and commercialization of the Company's products and the achievement of a revenue level adequate to support its cost structure and the Company can give no assurances that this will occur. Based on the Company's current operating plan, the Company believes that its cash and cash equivalents as of December 31, 2024, of $ 0.4 million is not sufficient to fund operations and capital expenditures for the twelve months following the filing of this Annual Report on Form 10-K, and the Company will need to obtain additional funding in the very near term, otherwise the Company may immediately substantially curtail or terminate its operations.

 The Company performed a cash flow projection on a monthly basis for the twelve-month period following the issuance of the consolidated financial statements. The projected inflows from revenues and grants will be insufficient to cover the projected outflows, as such, the Company will continue to have a negative net working capital position and a delay in the projected timing of the short term financing and inflows and/or an immediate demand by creditors of repayment of the long outstanding payables may result in the Company being insolvent and short of cash at any specific time over the coming weeks and over the next twelve months.

 Until such time as the Company generates sufficient revenue to fund its operations (if ever), the Company plans to finance its operations and repay its existing and future liabilities and other obligations through the sale of equity and/or debt securities and, to the extent available, short-term and long-term loans.

 With regards to the projected revenues and grants, a delay in the projected timing of inflows may result in the Company remaining insolvent and short of cash at any specific time over the next twelve months. Also, there is no guarantee that the Company's plans to reduce monthly expenditures will be successful.

 If the Company is unable to obtain sufficient funding, it could be required to delay its development efforts, limit activities, and further reduce research and development costs, which could adversely affect its business prospects and delivery of contractual obligations. A cash shortfall at any point in time over the next twelve months could result in the Company failing to meet its overdue and current obligations which could trigger action against the Company and/or its subsidiaries for liquidation by employees, authorities, or creditors. Because of the uncertainty in securing additional funding, delays in growth of revenue, failure to materialize cost-cutting efforts and the insufficient amount of cash and cash equivalents as of the consolidated financial statement filing date, management has concluded that substantial doubt exists with respect to the Company's ability to continue as a going concern for one year from the date the consolidated financial statements are issued.

 2. Summary of Significant Accounting Policies:

 Basis of Presentation

 The accompanying consolidated financial statements are presented in United States ("U.S.") dollars and have been prepared in conformity with accounting principles generally accepted in the United States of America ("GAAP") and pursuant to the rules and regulations of the SEC.

 Principles of Consolidation

 The accompanying consolidated financial statements represent the consolidation of the accounts of the Company and its wholly owned subsidiaries.

 F- 13

 Subsidiaries: Subsidiaries are those entities in which the Company has an interest of more than one-half of the voting rights or otherwise has power to govern the financial and operating policies of the entity. The acquisition method of accounting is used to account for the acquisition of subsidiaries. The cost of an acquisition is measured as the fair value of the assets given up, shares issued, or liabilities undertaken at the date of acquisition. The excess of the cost of acquisition over the fair value of the net assets acquired and liabilities assumed is recorded as goodwill. In case the fair value of purchase consideration transferred is below fair values of these identifiable assets and liabilities, the Company recognizes a gain from a bargain purchase. The Company recognizes the fair value of estimated contingent consideration at the acquisition date as part of the consideration transferred in exchange for the acquired business. The contingent consideration is remeasured to fair value at each reporting date until the contingency is resolved. Any changes in fair value are recognized each reporting period in non-cash changes in fair value of estimated contingent consideration in the accompanying consolidated statements of operations.

 The subsidiaries are fully consolidated from the date on which control is obtained by the Company. All subsidiaries included in the accompanying consolidated financial statements are 100 % owned by the Company. Inter-company transaction balances and unrealized gains/(losses) on transactions between the companies are eliminated.

 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 disclosure of contingent assets and liabilities as of the dates of the financial statements and the reported amounts of revenues and expenses during the reporting periods. On an on-going basis, management evaluates the estimates and judgments, including those related to the selection of useful lives for tangible assets, expected future cash flows from long-lived assets to support impairment tests, the carrying value of goodwill, provisions necessary for accounts receivables and inventory write downs, provisions for legal disputes, and contingencies. Management bases its estimates and judgments on historical experience and on various other factors that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results could differ from those estimates under different assumptions and/or conditions.

 Foreign Currency Translation

 The Company's reporting currency is U.S. dollar. The financial statements of the Company's subsidiaries outside the U.S. have been translated into U.S. dollars. Assets and liabilities of foreign operations are translated from foreign currencies into U.S. dollars at the exchange rates in effect as of the balance sheet date. Revenue and expenses are translated at the weighted average exchange rates for the period. Equity accounts are translated at historical rates. Gains or losses resulting from translating foreign currency financial statements into U.S. dollar are reported as cumulative translation adjustments, a separate component of other comprehensive income (loss) in stockholders' equity.

 Transactions denominated in foreign currencies other than the functional currency of the Company and the functional currencies of the Company's subsidiaries are translated using the exchange rates in effect at the time of the transactions. At the balance sheet date, monetary assets and liabilities denominated in foreign currencies are translated at exchange rates in effect as of the balance sheet date. Resulting foreign exchange differences are included in the consolidated statements of operations.

 Comprehensive Income (Loss)

 Comprehensive income (loss) is comprised of net income (loss) and other comprehensive income (loss). Other comprehensive income (loss) consists of foreign currency translation adjustments that result from consolidation of Company's subsidiaries and actuarial losses related to the defined benefit obligation recognized in the Company's Greek subsidiary.

 F- 14

 Segment Information

 Under ASC 280, Segment Reporting, operating segments are defined as components of an enterprise where discrete financial information is available that is evaluated regularly by the chief operating decision-maker ("CODM"), in deciding how to allocate resources and in assessing performance. The Company's Chief Executive Officer (currently also serving as Interim Chief Financial Officer), Chief Technology Officer, Chief Operating Officer and General Counsel, jointly and collectively serve as CODM, making decisions and managing the Company's operations as a single operating segment for purposes of allocating resources and evaluating financial performance. For the above reasons, the Company has determined that it operates in one reportable operating segment. The disaggregation of Company's revenue by geographic location and segment expenses are presented in Note 21.

 Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents

 Cash and cash equivalents are highly liquid investments with original maturities of three months or less. Cash and cash equivalents consist of cash on hand, deposits held on call with banks and investments in money market funds with original maturities of three months or less at the date of acquisition. Restricted cash, current was cash the Company received on behalf of other grant partners and is offset by a corresponding liability in trade and other current payables. The restricted cash, non-current was a letter of credit required by the Company's lease agreement for the Hood Park facility in Boston, Massachusetts. The letter of credit was required for the duration of the lease agreement which had a term of eight years. The lease commenced in October 2022 and was terminated in June 2024.

 The Company reconciles cash, cash equivalents, restricted cash and restricted cash equivalents reported in the consolidated balance sheets that aggregate to the beginning and ending balances shown in the consolidated statements of cash flows as follows:

 Schedule of restricted cash and cash equivalents

 2024

 2023

 Cash and cash equivalents

 $

 $

 3,200

 Restricted cash, current

 -

 Restricted cash, non-current

 -

 Cash, cash equivalents, restricted cash and restricted cash equivalents

 $

 $

 4,050

 Inventories

 Inventories, which consist of raw materials, work-in-process and finished goods are stated at the lower of cost or net realizable value using the first-in, first-out cost method. Cost includes the cost of purchased materials, inbound freight charges, external and internal processing and applicable labor and overhead costs. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation.

 The Company periodically reviews quantities of inventories on hand and compares these amounts to the expected use of each product. Inventories are reviewed to determine if valuation allowances are required for obsolescence (excess, obsolete, and slow-moving inventory). This review includes analyzing inventory levels of individual parts considering the current design of our products and production requirements as well as the expected inventory requirements for maintenance on installed power platforms. The Company records a charge to cost of revenue for the amount required to reduce the carrying value of inventory to the net realizable value.

 F- 15

 Leases

 The Company is a lessee in noncancelable operating leases. The Company determines if an arrangement is or contains a lease at contract inception. This determination depends on whether the arrangement conveys the right to control the use of an explicitly or implicitly identified asset for a period of time in exchange for consideration. Control of an underlying asset is conveyed if the Company obtains the right to direct the use of and obtains substantially all of the economic benefits from using the underlying asset. The Company classifies leases with contractual terms greater than 12 months as either operating or finance. The Company recognizes a right of use asset and a lease liability at the lease commencement date. For operating leases, the lease liability is initially measured at the present value of the unpaid lease payments at the lease commencement date. For finance leases, the lease liability is initially measured in the same manner and date as for operating leases and is subsequently measured at amortized cost using the effective interest method.

 Key estimates and judgments include how the Company determines (1) the discount rate it uses to discount the unpaid lease payments to present value, (2) the lease term and (3) the lease payments.

 ASC Topic 842 requires a lessee to discount its unpaid lease payments using the interest rate implicit in the lease or, if that rate cannot be readily determined, its incremental borrowing rate. Generally, the Company cannot determine the interest rate implicit in the lease because it does not have access to the lessor's estimated residual value or the amount of the lessor's deferred initial direct costs. Therefore, the Company generally uses its incremental borrowing rate as the discount rate for the lease. The Company's incremental borrowing rate for a lease is the rate of interest it would have to pay on a collateralized basis to borrow an amount equal to the lease payments under similar terms.

 The lease term for all of the Company's leases includes the noncancelable period of the lease, plus any additional periods covered by either a Company option to extend (or not to terminate) the lease that the Company is reasonably certain to exercise, or an option to extend (or not to terminate) the lease controlled by the lessor.

 Lease payments included in the measurement of the lease liability comprise fixed payments, and for certain finance leases, the exercise price of a Company option to purchase the underlying asset if the Company is reasonably certain at lease commencement to exercise the option.

 Lease incentives, such as leasehold improvement and rent holidays, that are paid or payable to the lessee at lease commencement are deducted from the lease payments, which affects the lease classification test and reduces the initial measurement of the lessee's right-of-use asset. Lease incentives that are payable to the lessee at lease commencement also reduce a lessee's lease liability.

 The right of use asset is initially measured at cost, which comprises the initial amount of the lease liability adjusted for lease payments made at or before the lease commencement date, plus any initial direct costs incurred less any lease incentives received. For operating leases, the right of use asset is subsequently measured throughout the lease term at the carrying amount of the lease liability, plus initial direct costs, plus (minus) any prepaid (accrued) lease payments, less the unamortized balance of lease incentives received. Lease expense for lease payments is recognized on a straight-line basis over the lease term which included within administrative and selling expenses on the consolidated statements of operations.

 For finance leases, the right of use asset is subsequently amortized using the straight-line method from the lease commencement date to the earlier of the end of the useful life of the underlying asset or the end of the lease term unless the lease transfers ownership of the underlying asset to the Company or the Company is reasonably certain to exercise an option to purchase the underlying asset. In those cases, the right of use asset is amortized over the useful life of the underlying asset. Amortization of the right of use asset is recognized and presented separately from interest expense on the lease liability.

 Right of use assets for operating and finance leases are periodically reviewed for impairment losses. The Company uses the long-lived assets impairment guidance in ASC Subtopic 360-10, Property, Plant, and Equipment – Overall, to determine whether a right of use asset is impaired, and if so, the amount of the impairment loss to recognize.

 The Company monitors for events or changes in circumstances that require a reassessment of its leases. When a reassessment results in the remeasurement of a lease liability, a corresponding adjustment is made to the carrying amount of the corresponding right of use asset.

 F- 16

 Operating and finance lease right of use assets are presented separately on the Company's consolidated balance sheets. The current portions of operating and finance lease liabilities are also presented separately within current liabilities and the long-term portions are presented separately within noncurrent liabilities on the consolidated balance sheets.

 The Company has elected not to recognize right of use assets and lease liabilities for short-term leases that have a lease term of 12 months or less. The Company recognizes the lease payments associated with its short-term leases as an expense on a straight-line basis over the lease term.

 Variable payments related to a lease are expensed as incurred. These costs often relate to payments for real estate taxes, insurance, common area maintenance, and other operating costs in addition to base rent.

 Accounts Receivable and Credit Losses

 Accounts receivable are recorded at the invoiced amounts, net of an allowance for doubtful accounts based on the Company's best estimate of probable credit losses. In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses of Financial Instruments, which amends the requirement on the measurement and recognition of expected credit losses for financial assets held. Furthermore, amendments ASU 2019-10 and ASU 2019-11 provided additional clarification for implementing ASU 2016-13. ASU 2016-13 is effective for the Company beginning January 1, 2023, with early adoption permitted. The Company adopted the standard on January 1, 2023, in accordance with the adoption dates for private entities applicable to it under its emerging growth company status at that time and the standard did not have a material impact on the Company's consolidated financial statements and related disclosures. The Company is exposed to credit losses primarily through sales of its products. The Company assesses each customer's ability to pay by conducting a credit review which includes consideration of established credit rating or an internal assessment of the customer's creditworthiness based on an analysis of their payment history when a credit rating is not available. The Company monitors the credit exposure through active review of customer balances. The Company's expected loss methodology for accounts receivable is developed through consideration of factors including, but not limited to, historical collection experience, current customer credit ratings, current customer financial condition, current and future economic and market condition, and age of the receivables. Charges related to credit losses are included in administrative and selling expenses and are recorded in the period that the outstanding receivables are determined to be doubtful. Account balances are written-off against the allowance when they are deemed uncollectible.

 Property, Plant and Equipment

 Property, plant and equipment are stated at cost, adjusted for any impairment, less accumulated depreciation which is recorded based on the straight-line method over the estimated useful lives of the respective assets. Estimated useful lives range from 5 to 50 years for buildings and leasehold improvements and 3 to 20 years for machinery and other equipment. Leasehold improvements are depreciated on the straight-line method over the shorter of the estimated useful lives of the assets or the term of the lease. Land is not depreciated.

 Subsequent expenditures are capitalized, provided they increase the functionality, output or expected life of an asset and depreciated ratably over the identified useful life. Repairs and maintenance costs are expensed as incurred.

 Fixed assets under construction are shown at their cost. Fixed assets under construction are not depreciated until the fixed asset is completed and entered in operation.

 When property is sold or otherwise disposed of, the cost and related accumulated depreciation are removed from the consolidated balance sheet and any resulting gain or loss is reflected in the consolidated statements of operations for the period.

 F- 17

 Business Acquisitions, Goodwill and Intangible Assets

 The Company accounts for business acquisitions under ASC Topic 805, Business Combinations. The total purchase consideration for an acquisition is measured as the fair value of the assets given, equity instruments issued, and liabilities assumed at the acquisition date. The Company allocates the fair value of purchase consideration transferred in a business acquisition to the tangible assets acquired, liabilities assumed, and intangible assets acquired based on their estimated fair values. The excess of the fair value of purchase consideration transferred over the fair values of these identifiable assets and liabilities is recorded as goodwill. In case the fair value of purchase consideration transferred is below fair values of these identifiable assets and liabilities, the Company recognizes a gain from a bargain purchase. The Company recognizes the fair value of estimated contingent consideration at the acquisition date as part of the consideration transferred in exchange for the acquired business. The contingent consideration is remeasured to fair value at each reporting date until the contingency is resolved. Any changes in fair value are recognized each reporting period in non-cash changes in fair value of estimated contingent consideration in the accompanying consolidated statements of operations.

 Such valuations require management to make significant estimates and assumptions, especially with respect to intangible assets. Significant estimates in valuing certain intangible assets include, but are not limited to, future expected cash flows from acquired licenses, trade names, in process research and development ("R&D"), useful lives and discount rates, patents, customer clientele, customer contracts and know-how. Management's estimates of fair value are based upon assumptions believed to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ from estimates. During the measurement period, the Company may record adjustments to the assets acquired and liabilities assumed, with the corresponding offset to goodwill. Upon the conclusion of the measurement period, any subsequent adjustments are recorded in the consolidated statement of operations.

 For significant acquisitions, the Company obtains independent appraisals and valuations of the intangible (and certain tangible) assets acquired and certain assumed liabilities. The Company analyzes each acquisition individually and all acquisitions within each reporting period in aggregate to determine if those are material acquisitions in the context of ASC 805-10-50.

 The estimated fair values and useful lives of identified intangible assets are based on many factors, including estimates and assumptions of future operating performance and cash flows of the acquired business, estimates of cost avoidance, the nature of the business acquired, the specific characteristics of the identified intangible assets and our historical experience and that of the acquired business. The estimates and assumptions used to determine the fair values and useful lives of identified intangible assets could change due to numerous factors, including product demand, market conditions, regulations affecting the business model of our operations, technological developments, economic conditions and competition.

 The Company's most significant intangible assets are patents and developed technologies, trade names, in process know-how and order backlogs. The fair values of intangible assets are based on valuations using an income approach, with estimates and assumptions provided by management of the acquired companies and the Company. The process for estimating the fair values of identifiable intangible assets requires the use of significant estimates and assumptions, including revenue growth rates, royalty rates, discount rates and projected cash flows. All definite-lived intangible assets are amortized on a straight-line basis over the periods in which their economic benefits are expected to be realized, which range from 1 to 10 years. The Company reviews the useful life assumptions, including the classification of certain intangible assets as "indefinite-lived," on a periodic basis to determine if changes in circumstances warrant revisions to them.

 The Company conducts a goodwill impairment analysis annually in the fourth fiscal quarter, or more frequently if changes in facts and circumstances indicate that the fair value of our reporting units may be less than their carrying amounts. In testing goodwill for impairment, the Company first assesses qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, the Company determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then additional impairment testing is not required. When the Company determines a fair value test is necessary, it estimates the fair value of a reporting unit and compares the result with its carrying amount, including goodwill. If the carrying amount of a reporting unit exceeds its fair value, an impairment is recorded equal to the amount by which the carrying value exceeds the fair value, up to the amount of goodwill associated with the reporting unit. Currently, we identify three reporting units. During the year ended December 31, 2023, all remaining goodwill was impaired.

 F- 18

 Impairment of Long-Lived Assets Including Acquired Intangible Assets

 The Company reviews the property, plant and equipment, long-term prepayments and intangible assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. The Company measures recoverability by comparing the carrying amount to the future undiscounted cash flows that the asset is expected to generate. If the asset is not recoverable, its carrying amount is adjusted down to its fair value.

 Revenue Recognition

 In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), as amended, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The Company adopted ASU No. 2014-09 on January 1, 2019, using the modified retrospective approach to all contracts not completed at the date of initial application.

 In accordance with ASC 606, revenue is recognized when control of the promised goods or services are transferred to a customer in an amount that reflects the consideration that the Company expects to receive in exchange for those services. The Company applies the following five steps in order to determine the appropriate amount of revenue to be recognized as it fulfills its obligations under each of its arrangements:

 identify the contract with a customer,

 identify the performance obligations in the contract,

 determine the transaction price,

 allocate the transaction price to performance obligations in the contract, and

 recognize revenue as the performance obligation is satisfied.

 With significant and recurring customers, the Company negotiates written master agreements as framework agreements (general terms and conditions of trading), following individual purchase orders. For customers with no master agreements, the approved purchase orders form the contract. Effectively, contracts under the revenue standard have been assessed to be the purchase orders agreed with customers.

 The Company has assessed that each product sold is a single performance obligation because the promised goods are distinct on their own and within the context of the contract. In cases where the agreement includes customization services for the contracted products, the Company is providing integrated services; therefore, the goods are not separately identifiable, but are inputs to produce and deliver a combined output and form a single performance obligation within the context of the contract. Furthermore, the Company assessed whether it acts as a principal or agent in each of its revenue arrangements and has concluded that in all sales transactions it acts as a principal. Additionally, the Company, taking into consideration the guidance and indicative factors provided by ASC 606, concluded that it provides assurance type warranties (warranty period is up to two years) as it does not provide a service to the customer beyond fixing defects that existed at the time of sale. The Company, based on historical performance, current circumstances, and projections of trends, estimated that no allowance for returns as per warranty policy should be recognized, at the time of sale, accounted for under ASC 460, Guarantees.

 Under ASC 606, the Company estimates the transaction price, including variable consideration, at the commencement of the contract and recognize revenue over the contract term, rather than when fees become fixed or determinable. In other words, where contracts with customers include variable consideration (i.e. volume rebates), the Company estimates at contract inception the variable consideration and adjusts the transaction price only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. Furthermore, no material rights or significant financing components have been identified in the Company's contracts. Payment terms generally include advance payment requirements. The time between a customer's payment and completion of the performance obligation is less than one year. Payment terms are in the majority fixed and do not include variable consideration, except from volume rebates.

 F- 19

 Revenue from satisfaction of performance obligations is recognized based on identified transaction price. The transaction price reflects the amount to which the Company has rights under the present contract. It is allocated to the distinct performance obligations based on standalone selling prices of the services promised in the contract. In cases of more than one performance obligation, the Company allocates transaction price to the distinct performance obligations in proportion to their observable stand-alone selling prices and recognize revenue as those performance obligations are satisfied.

 In the majority of cases of product sales, revenue is recognized at a point in time when the customer obtains control of the respective goods that is, when the products are shipped from the Company's facilities as control passes to the customer in accordance with agreed contracts and the stated shipping terms. In cases where the contract includes customization services, which one performance obligation is identified, revenue is recognized over time as the Company's performance does not create an asset with alternative use and the Company has an enforceable right to payment for performance completed to date. The Company uses the input method (i.e., cost-to-cost method) to measure progress towards complete satisfaction of the performance obligation.

 Contract Assets and Contract Liabilities

 Contract assets reflect revenue recognized and performance obligations satisfied in advance of customer billing. As of December 31, 2024, and 2023, Advent recognized contract assets of $ 623 thousand and $ 9 thousand, respectively on the consolidated balance sheets.

 Advent recognizes contract liabilities when the Company receives customer payments or has the unconditional right to receive consideration in advance of the performance obligations being satisfied on the Company's contracts. The Company receives payments from customers based on the terms established in the contracts. Contract liabilities are classified as either current or long-term liabilities in the consolidated balance sheets based on the timing of when the Company expects to recognize the related revenue. As of December 31, 2024, and 2023, The Company recognized contract liabilities of $3.2 3,187 million and $0.4 414 million, respectively, in the consolidated balance sheets. During the years ended December 31, 2024 and 2023, the Company recognized $ 0.1 million and $ 0.1 million in revenues.

 Cost of revenues consists of consumables, raw materials, inventory provision, processing costs and direct labor costs associated with the assembly and manufacture of MEAs, membranes, fuel cell stacks and systems and electrodes. Advent recognizes cost of revenues in the period that revenues are recognized.

 Research and Development Expenses

 Research and development expenses consist of costs associated with Advent's research and development activities, such as laboratory costs, labor costs and sample material costs.

 Administrative and Selling Expenses

 Administrative and selling expenses consist of travel expenses, indirect labor costs, fees paid to consultants, third parties and service providers, taxes and duties, legal and audit fees, depreciation, business development salaries and limited marketing activities, and incentive and stock-based compensation expense.

 Income from grants and related deferred income

 Grants include cash subsidies received from various institutions and organizations. Grants are recognized as income from grants. Such amounts are recognized in the consolidated statements of operations when all conditions attached to the grants are fulfilled.

 Condition to the grants would not be fulfilled unless related costs have been characterized as eligible by the grantors, are actually incurred and there is certainty that costs are allowable. These grants are recognized as deferred income when received and recorded in income when the eligible and allowable related costs and expenses are incurred. Under all grant programs, a coordinator is specified. The coordinator, among other, receives the funding from the grantor and proceeds to its distribution to the parties agreed in the process specified in the program. The Company assessed whether it acts as a principal or agent in its role as a coordinator for specific grants and has concluded that in all related transactions it acts as an agent.

 F- 20

 During the years ended December 31, 2024 and 2023, the Company recognized income for grants of $ 0.9 million and $ 1.6 million, respectively, in connection with amounts received for fuel cell research and development. As of December 31, 2024 and 2023, the Company had receivables from grant income of $ 0.0 million and $ 0.2 million, respectively, which is included within prepaid expenses and other current assets in the consolidated balance sheets. As of December 31, 2024 and 2023, deferred income from grants in the consolidated balance sheets is $ 0.6 million and $ 0.8 million, respectively, and is split between current and non-current portion based on the estimated time of realization of eligible costs and expenses.

 Advent Technologies S.A. and Helical Systems for Chiral Organic Light Emitting Diodes ("HEL4CHIROLED Project")

 In January 2020 Advent Technologies S.A became a partner in the European Union ("EU") funded HEL4CHIROLED Project. The aim of the project is to improving organic light-emitting diodes (OLEDs) in Europe by training early-career researchers. The project aims to develop new thinking in OLED technologies, developing new material sets and approaches that take advantage of emerging technologies to improve the performance of displays based on OLEDs. Per the terms of the project, Advent Technologies S.A. was reimbursed for $0.2 million of research and development costs. The project ended in June 2024.

 During the year ended December 31, 2023, the Company recognized $ 0.1 million in reimbursements related to the project which is included as income from grants on the consolidated statement of operations.

 As of December 31, 2024 and 2023, the Company had receivables related to project of $ 0.1 million and $ 0.1 million, included within prepaid expenses and other current assets in the consolidated balance sheets.

 Advent Technologies GmbH and The Industrialization of Power Generation with High-Temperature Proton Exchange Membrane ("HT-PEM" or "HT-PEMs") Fuel Cell and Integrated Methanol Reformer Project ("ISEHM Project")

 In September 2020, Advent Technologies GmbH entered into an agreement with the German Federal Ministry for Economic Affairs and Climate Action as the project coordinator for the ISEHM Project. The aim of the project is to enable the marketable series production of 5kW power generators with fuel cell technology, based on HT-PEMs and an integrated methanol reformer. The project is in coordination with a consortium of partners including Advent Technologies A/S. The term of the ISEHM Project is from September 2020 through September 2023 and has a total budget of 5.4 million. The project partners can be reimbursed for expenses related to research and development up to 30% of the total budget.

 During the years ended December 31, 2023, the Company recognized $ 0.2 million, in reimbursements related to the project which is included as income from grants on the consolidated statement of operations.

 Advent Technologies GmbH and Innovation Competition for Climate-Neutral Production Using Industry 4.0 Solutions Project

 In June 2022, Advent Technologies GmbH signed an agreement with the State Parliament of Baden-W rttemberg and the Ministry of Economics, Labor, and Tourism to lead a consortium of partners for the innovation competition for climate-neutral production using industry 4.0 solutions. The project aim is to reduce waste production of fuel cell stacks through imaging quality control of the bipolar plates. Advent Technologies GmbH is eligible to receive reimbursements up to 0.1 million related to research and development related to the project. The project's term is through fiscal year 2023.

 During the year ended December 31, 2023, the Company recognized $ 0.1 million, in reimbursements related to the project which is included as income from grants on the consolidated statement of operations.

 Advent Technologies S.A. and Ni-Based Ferromagnetic Coatings with Enhanced Efficiency to Replace Pt in Energy & Digital Storage Applications Project ("NICKEFFECT Project")

 In June 2022 Advent Technologies S.A became a partner in the European Union ("EU") funded NICKEFFECT Project. The aim of the project is to find alternatives to platinum group metals ("PGMs") to replace PGMs in key applications as electrolysers electrodes, fuel cell catalysts and magneto-electronic devices. NICKEFFECT will develop and validate at least 3 new materials, together with the coating methodologies (including process modelling) and decision support tools for materials selection (integrating safe and sustainable by design criteria and materials modelling). Per the terms of the project, Advent Technologies S.A. can be reimbursed up to $0.4 million of research and development costs. The project ends in May 2026.

 During the years ended December 31, 2023,
the Company recognized $ 0.1 million,
in reimbursements related to the project which is included as income from grants on the consolidated statement of operations. As of
December 31, 2024 and 2023, $ 0.1 million
and $ 0.1
million, respectively, was included as deferred income from grants, current on the consolidated balance sheets. As of
December 31, 2024 and 2023, $ 0.1 million
and nil 0, respectively, was included as deferred income from grants, non-current on the consolidated balance sheets.

 F- 21

 Advent Technologies S.A. and GreenSkills4H2 - The European Hydrogen Skills Alliance Project ("GreenSkills4H2 Project")

 In July 2022 Advent Technologies S.A became a partner in the European Union ("EU") funded GreenSkills4H2 Project. The aim of the project is to bring together key industry and education stakeholders from across the European hydrogen sector to promote investments and stimulate clean hydrogen production and use. Per the terms of the project, Advent Technologies S.A. can be reimbursed up to $0.1 million or 80% of eligible of research and development costs. The project ends in May 2026.

 During the years ended December 31, 2024
and 2023, the Company recognized $ 0.01 million
and $ 0.1
million, respectively, in reimbursements related to the project which is included as income from grants on the consolidated
statement of operations. As of December 31, 2024 and 2023, 0 nil and $ 0.01 million,
 respectively, was included as receivable from grants in prepaid expenses and other current assets on the consolidated balance
sheets. As of December 31, 2024 and 2023, $ 0.01 million
and 0 nil, respectively, was included as deferred income from grants, non-current on the consolidated balance sheets.

 Advent Technologies S.A. and Liquid Fuel Electrochemical Generators Project ("Li. F.E. Project")

 In September 2022 Advent Technologies S.A became a partner in the European Union ("EU") funded Li. F.E. Project. The aims of the project are to improve and validate the next generation liquid fuel electrochemical engine technology for power generation and mobility, especially marine, create partnerships with Tier-1 and original equipment manufacturers, lead the transition e-fuels for the transport sector and provide zero-emission vehicles through the most environmentally friendly fuel cell stacks. Per the terms of the project, Advent Technologies S.A. can be reimbursed up to $1.9 million or 70% of eligible of research and development costs. The project ends in April 2025.

 During the year ended December 31, 2024 and 2023, the Company recognized $ 0.2 million and $ 0.5 million, respectively, in reimbursements related to the project which is included as income from grants on the consolidated statement of operations.

 As of December 31, 2023, $ 0.1 million was included within deferred income from grants, current on the consolidated balance sheet and as of December 31, 2024, $ 0.1 million was included as receivable from grants in prepaid expenses and other current assets on the consolidated balance sheets.

 Advent Technologies S.A. and Next Generation of Improved High Temperature Membrane Electrode Assembly for Aviation Project ("NIMPHEA Project")

 In December 2022 Advent Technologies S.A became a partner in the European Union ("EU") funded NIMPHEA Project. The aim of the project is to develop a new-generation HT MEA compatible with aircraft environment and requirements, considering a system size of 1.5 MW and contributing to higher level FC targets: a power density of 1.25 W/cm at nominal operating temperature comprised between 160 C-200 C. MEA components' upscale synthesis and assembly process will be assessed by identifying process parameters and improved through an iterative process with lab-scale MEA tests. Advent SA can be reimbursed up to $0.8 million of research and development costs. The project ends in December 2026.

 During the year ended December 31, 2024 and 2023, the Company recognized $ 0.1 million and $ 0.3 million, respectively, in reimbursements related to the project which is included as income from grants on the consolidated statement of operations.

 As of December 31, 2024 and 2023, $ 0.2 million and $ 0.1 million, respectively, was included as receivable from grants in prepaid expenses and other current assets on the consolidated balance sheets.

 F- 22

 Advent Technologies S.A. and Electrochemical Conversion of CO2 into Added Value Products via Highly Selective Bimetallic Materials and Innovative Process Design Network ("ECOMATES Network")

 In February 2023 Advent Technologies S.A became a partner in the European Union ("EU") funded ECOMATES network which gathers large European universities, international research laboratories, and other enterprises for cutting-edge Membrane Electrode Assemblies ("MEA" or "MEAs") research. Per the terms of the project, Advent Technologies S.A. can be reimbursed up to $0.2 million of eligible of research and development costs. The project ends in January 2027.

 During the years ended December 31, 2024 and 2023, the Company recognized $ 0.02 million and $ 0.1 million, respectively, in reimbursements related to the project which is included as income from grants on the consolidated statement of operations.

 As of December 31, 2024 and 2023, $ 0.1 million and $ 0.1 million, was included within deferred income from grants, current on the consolidated balance sheet. As of December 31, 2024 and 2023, $ 0.1 million and $ 0.02 million, respectively, was included within deferred income from grants, non-current on the consolidated balance sheet.

 Advent Technologies S.A. and Recycling Critical Metals from Fuel Cells ("LYDIA Project")

 In January 2023 Advent Technologies S.A became a partner in the EIT RawMaterials GmbH ("EIT") funded LYDIA project (co-funded by the European Union ("EU")), which aims to commercialize low-cost components (30% lower to commercial) for hydrogen devices (fuel cell, electrolyzers) through recycling end of life membrane electrode assembly (MEAs) and extraction of platinum group metals ("PGMs"). Per the terms of the project, Advent Technologies S.A. can be reimbursed up to $0.3 million of eligible of research and development costs. The project ends in December 2025.

 During the years ended December 31, 2024 and 2023, the Company recognized $ 0.1 million and $ 0.1 million, respectively, in reimbursements related to the project which is included as income from grants on the consolidated statement of operations.

 As of December 31, 2024 and 2023, $ 0.01 million and $ 0.1 million, respectively, was included as receivable from grants in prepaid expenses and other current assets on the consolidated balance sheets.

 Advent Technologies S.A. and Advanced MEAs ensuring high efficiency heavy duty vehicle ("MEAsureD Project")

 In January 2023 Advent Technologies S.A became a coordinator and partner in the European Union ("EU") funded MEAsureD project, which targets to provide advanced, cost-effective proton exchange membranes ("PEM") and stable electrodes for the membrane electrode assembly (MEA) at higher temperatures (>160 oC). Per the terms of the project, Advent Technologies S.A. can be reimbursed up to $0.8 million of eligible of research and development costs. The project ends in May 2026.

 During the year ended December 31, 2024 and 2023, the Company recognized $ 0.25 million and $ 0.1 million, respectively, in reimbursements related to the project which is included as income from grants on the consolidated statement of operations.

 As of December 31, 2024 and 2023, $ 0.2 million and $ 0.3 million, respectively, was included within deferred income from grants, current on the consolidated balance sheet. As of December 31, 2024 and 2023, $ 0.1 million and $ 0.3 million, respectively, was included within deferred income from grants, non-current on the consolidated balance sheet.

 Advent Technologies S.A. and promoting an environmentally-responsible hydrogen economy by enabling product environmental footprint studies ("HyPEF Project")

 In December 2023 Advent Technologies S.A became a partner in the European Union ("EU") funded HyPEF project, which targets to support and promote the establishment of an environmentally-responsible hydrogen economy by developing and testing the first Product Environmental Footprint Category Rules ("PEFCRs") specific to fuel cells and hydrogen ("FCH") products, while paving the way for subsequent related initiatives in the FCH sector. Per the terms of the project, Advent Technologies S.A. can be reimbursed up to $0.1 million of eligible of research and development costs. The project ends in January 2027.

 During the years ended December 31,
2024 and 2023, the Company recognized $ 0.1
million and 0 nil, respectively, in reimbursements related to the project which is included as income from grants on the
consolidated statement of operations.

 F- 23

 Advent Technologies S.A. ("CRUSADE")

 CRUSADE project aims to demonstrate a holistic technological solution on the recycling of end-of-life products to extract CRMs and disrupt the EU supply demand deficit of these materials, as well as the dependence on imports from third countries. Advent's contribution is to provide material (scrap) from end-of-life fuel cells or indicate specific recycling companies which could provide scrap from fuel cells (MEAs). As an end user Advent will further test/validate the electrodes that will be produced using recycled materials (single cell performance).

 During the year ended December 31, 2024, the Company recognized $ 0.3 million in reimbursements related to the project which is included as income from grants on the consolidated statement of operations.

 As of December 31, 2024, $ 0.04 million, was included within deferred income from grants, current on the consolidated balance sheet. As of December 31, 2024, $ 0.02 million, was included within deferred income from grants, non-current on the consolidated balance sheet.

 Advertising, Marketing and Promotional Costs

 Advertising marketing and promotional costs are expensed as incurred and are included as an element of administrative and selling expenses in the consolidated statement of operations. Advertising, marketing and promotional costs were $ 3 thousand and $ 0.1 million for the years ended December 31, 2024 and 2023, respectively.

 Advent follows the asset and liability method of accounting for income taxes under ASC 740, Income Taxes. Under the asset and liability method, deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to temporary differences between the financial statements carrying amounts of existing assets and liabilities and their respective tax bases. This method also requires the recognition of future tax benefits, such as net operating loss carry forwards, to the extent that it is more likely than not that such benefits will be realized. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that included the enactment date. Valuation allowances are established, when necessary, to reduce deferred tax assets to the amount expected to be realized. Valuation allowances are reassessed periodically to determine whether it is more likely than not that the tax benefits will be realized in the future and if any existing valuation allowance should be released.

 Part of the Advent's business activities are conducted through its subsidiaries outside of U.S. Earnings from these subsidiaries are generally indefinitely reinvested in the local businesses. Further, local laws and regulations may also restrict certain subsidiaries from paying dividends to their parents. Consequently, Advent generally does not accrue income taxes for the repatriation of such earnings in accordance with ASC 740, "Income Taxes." To the extent that there are excess accumulated earnings that the Company intends to repatriate from any such subsidiaries, the Company will recognize deferred tax liabilities on such foreign earnings.

 Advent assesses its income tax positions and records tax benefits for all years subject to examination based on the evaluation of the facts, circumstances, and information available at each reporting date. For those tax positions with a greater than 50 percent likelihood of being realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant information, Advent records a tax benefit. For those income tax positions that are not likely to be sustained, no tax benefit is recognized in the consolidated financial statements. Advent recognizes interest and penalties related to uncertain tax positions as part of the provision for income taxes.

 ASC 740 prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more likely than not to be sustained upon examination by taxing authorities. For those income tax positions that are not likely to be sustained, no tax benefit is recognized in the consolidated financial statements. Advent recognizes interest and penalties related to uncertain tax positions as part of the provision for income taxes.

 F- 24

 For the years ended December 31, 2024
and 2023, net income tax benefits (provisions) of $0.1
 55 million and $0.1
 82 million, respectively, have been recorded in the consolidated statements of operations. The Company is currently not aware of any
issues under review that could result in significant accruals or material deviation from its position. The Company is subject to
income tax examinations by major taxing authorities.

 The Company and its U.S. subsidiaries may be subject to potential examination by U.S. federal, state and city, while the Company's subsidiaries outside U.S. may be subject to potential examination by their taxing authorities in the areas of income taxes. These potential examinations may include questioning the timing and amount of deductions, the nexus of income among various tax jurisdictions and compliance with the U.S. federal, state and city, and tax laws in the countries where business activities of Company's subsidiaries are conducted. On December 22, 2017, the Tax Cuts and Jobs Act of 2017 ("Tax Reform") was signed into legislation. As part of the legislation, the U.S. corporate income tax rate was reduced from 35 % to 21 %, among other changes.

 Employee Benefits

 U.S. Retirement Savings Plan

 The Company sponsors an employee savings plan under Section 401(k) of the Internal Revenue Code. Subsequent to the Business Combination, the Company made matching contributions equal to 100 % of the participant's pre-tax contribution up to a maximum of 5 % of the participant's eligible earnings for U.S employees. Total expense related to the Company's defined contribution plan was $ 0.2 million and $ 0.2 million for the years ended December 31, 2024 and 2023, respectively.

 Defined Benefit Plans

 Under Greek labor law, employees are entitled to staff leaving indemnity in the event of dismissal or retirement with the amount of payment varying in relation to the employee's compensation, length of service and manner of termination (dismissed or retired). Employees who resign or are dismissed with cause are not entitled to staff leaving indemnity. Staff retirement obligations are calculated at the present value of the future retirement benefits deemed to have accrued at year-end, based on the employees earning retirement benefit rights accumulated throughout the working period in accordance with the Greek Labor Law 2112/1920.

 The provision for retirement obligations is classified as defined benefit plan under ASC 715-30 and is based on an actuarial valuation. Net costs for the period are separately reflected in the accompanying consolidated statements of comprehensive loss consist of the present value of benefits earned in the year, interest cost on the benefit obligation, past service cost and gains or losses on curtailment. Past service costs are recognized in the consolidated statements of operations on the earlier of the date of plan amendment and the date that the Company recognizes restructuring or termination costs. Actuarial gains or losses are recognized immediately in the consolidated balance sheets with a corresponding debit or credit to equity through other comprehensive income (loss) in the period in which they occur. Re-measurements are not reclassified to profit and loss in subsequent periods.

 Stock-based Compensation

 Stock-based compensation consists of stock options and restricted stock units ("RSUs"). Stock options and RSUs are equity classified and are measured at the fair market value of the underlying stock at the grant date. The fair value of stock option awards with only service is estimated on the grant date using the Black-Scholes option-pricing model. The fair value of RSUs is measured on the grant date based on the closing fair market value of our common stock. Under ASC 718, an entity may recognize stock-based compensation expense for an award with only a service condition that has a graded vesting schedule on either (1) an accelerated basis as though each separately vesting portion of the award was, in substance, a separate award or (2) a straight-line basis over the total requisite service period for the entire award. An entity's use of either a straight-line or an accelerated attribution method represents an accounting policy election and thus should be applied consistently to all similar awards. The Company has elected to recognize compensation cost on a straight-line basis over the total requisite service period for the stock options and restricted stock units. This election does not affect the Company's previous year's results since the Restricted Stock Awards granted in the prior period did not have a service requirement and therefore the stock compensation expense was recognized immediately. The Company also has a policy of accounting for forfeitures when they occur. Stock-based compensation expense is recorded in administrative and selling expenses in the consolidated statements of operations.

 F- 25

 Earnings / (Loss) Per Share

 Basic earnings / (Loss) per share is computed by dividing net earnings / (loss) by the weighted average number of common shares outstanding during the period. Diluted earnings / (loss) per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted at the beginning of the periods presented, or issuance date, if later. The treasury stock method is used to compute the dilutive effect of warrants, stock options and restricted stock units.

 Fair Value Measurements

 The Company follows the accounting guidance in ASC 820 for its fair value measurements of financial assets and liabilities measured at fair value on a recurring basis. Fair value is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or a liability.

 The accounting guidance requires fair value measurements be classified and disclosed in one of the following three categories:

 Level 1: Quoted prices in active markets for identical assets or liabilities.

 Level 2: Observable inputs other than Level 1 prices, for similar assets or liabilities that are directly or indirectly observable in the marketplace.

 Level 3: Unobservable inputs which are supported by little or no market activity and that are financial instruments whose values are determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant judgment or estimation.

 The fair value hierarchy also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Assets and liabilities measured at fair value are classified in their entirety based on the lowest level of input that is significant to the fair value measurement.

 Available for Sale Financial Asset

 On May 25, 2022, Advent Technologies S.A ("Advent SA") and UNI.FUND Mutual Fund ("UNIFUND") entered into an agreement to finance Cyrus SA ("Cyrus") with a convertible bond loan ("Bond Loan") of 1.0 million. As a part of this transaction, Advent SA offered 0.3 million in bond loans with an annual interest rate of 8.00 %. The term of the loan is three years and there is a surcharge of 2.5 % for overdue interest.

 Mandatory conversion of the Bond Loan will occur in the event of qualified financing which is equivalent to a share capital increase by Cyrus in the first three years from the execution of the Bond Loan agreement with a total amount over 3 million which is covered by third parties unrelated to the basic shareholders or by investors related to them.

 The Company classifies the Bond Loan as an available for sale financial asset on the consolidated balance sheets. The Company recognizes interest income within the consolidated statement of operations. For the year ended December 31, 2024, and 2023, the Company recognized $ 26 thousand and $ 26 thousand of interest income related to the Bond Loan within the consolidated statements of operations, respectively.

 The Company initially measured the available for sale Bond Loan at the transaction price plus any applicable transaction costs. The Bond Loan is remeasured to its fair value at each reporting period and upon settlement. The estimated fair value of the Bond Loan is determined using Level 3 inputs by using a discounted cash flow model. The change in fair value is recognized within the consolidated statements of comprehensive loss. As of December 31, 2024, the Company continues to fully reserve the Bond Loan as an expected credit loss. The Company did not recognize any unrealized gain / (loss) on the Bond Loan for the years ended December 31, 2024 and December 31, 2023.

 F- 26

 Warrants

 The Company may issue or assume common stock warrants with debt, equity or as standalone financing instruments that are recorded as either liabilities or equity in accordance with the respective accounting guidance. Warrants recorded as equity are recorded at their relative fair value or fair value determined at the issuance date and remeasurement is not required. Warrants recorded as liabilities are recorded at their fair value, within warrant liability on the consolidated balance sheets, and remeasured on each reporting date with changes recorded in fair value change of warrant liability on the Company's consolidated statements of operations.

 Warrant Liability

 As a result of the Business Combination, the Company assumed a warrant liability (the "Warrant Liability") related to previously issued 131,343 warrants, each exercisable to purchase one 1 share of common stock at an exercise price of $ 345.00 per share, originally sold to AMCI Sponsor LLC (the "Sponsor") in a private placement consummated in connection with AMCI's initial public offering (the "Private Placement Warrants") and the 13,333 warrants, each exercisable to purchase one 1 share of common stock at an exercise price of $ 345.00 per share, converted from the Sponsor's non-interest bearing loan to the Company of $ 0.4 million in connection with the closing of the Business Combination (the "Working Capital Warrants") (Note 14). The Private Placement Warrants and the Working Capital Warrants have substantially the same terms as the 734,309 warrants, each exercisable to purchase one share of common stock at an exercise price of $ 345.00 per share, issued by AMCI in its initial public offering (the "Public Warrants"). As of December 31, 2024, the Company had an aggregate of 65,671 Private Placement Warrants and Working Capital Warrants outstanding.

 The following tables summarize the fair value of the Company's assets and liabilities measured at fair value on a recurring basis as of December 31, 2024 and December 31, 2023.

 Schedule of liabilities measured at fair value on recurring basis

 As of
 2024

 Fair Value

 Unobservable Inputs
 (Level 3)

 Assets

 Available for sale financial asset

 $

 -

 $

 -

 $

 -

 $

 -

 Liabilities

 Warrant liability

 $

 -

 $

 -

 $

 -

 $

 -

 As of
 2023

 Fair Value

 Unobservable Inputs
 (Level 3)

 Assets

 Available for sale financial asset

 $

 -

 $

 -

 $

 -

 $

 -

 Liabilities

 Warrant liability

 $

 $

 $

 $

 F- 27

 The carrying amounts of the Company's remaining financial instruments reflected on the consolidated balance sheets and which consist of cash and cash equivalents, accounts receivables, net, other current assets, trade and other payables, and other current liabilities, approximate their respective fair values due to their short-term nature.

 Changes in the fair value of Level 3 assets and liabilities for the years ended December 31, 2024 and 2023 were as follows:

 Schedule of change in fair value of warrant liability

 Available for Sale Financial Asset

 For the
 2024

 For the
 2023

 Estimated fair value (beginning of period)

 $

 -

 $

 Estimated fair value of available for sale financial asset acquired

 -

 -

 Foreign exchange fluctuations

 -

 -

 Change in estimated fair value

 -

 ( 320

)

 Estimated fair value (end of period)

 $

 -

 $

 -

 Warrant Liability

 For the
 2024

 For the
 2023

 Estimated fair value (beginning of period)

 $

 $

 Change in estimated fair value

 ( 59

)

 ( 394

)

 Reclassification of private placement warrants

 -

 ( 545

)

 Estimated fair value (end of period)

 $

 -

 $

 The Warrant Liability is remeasured to its fair value at each reporting period and upon settlement. The change in fair value is recognized in "Fair value change of warrant liability" on the consolidated statements of operations.

 The estimated fair value of the Private Placement Warrants and the Working Capital Warrants (each as defined below) is determined using Level 3 inputs by using the Black-Scholes model. The application of the Black-Scholes model requires the use of a number of inputs and significant assumptions including volatility. Significant judgment is required in determining the expected volatility of our common stock. Due to the limited history of trading of our common stock, we determined expected volatility based on a peer group of publicly traded companies.

 The following tables provide quantitative information regarding Level 3 fair value measurement inputs as of their measurement date December 31, 2024:

 Schedule of fair value measurements input

 Available for Sale Financial Asset

 Interest Rate

 8.00

 %

 Discount Rate

 8.00

 %

 Remaining term (in years)

 0.40

 Warrant Liability

 Stock price

 $

 5.00

 Exercise price (strike price)

 $

 345.00

 Risk-free interest rate

 4.16

 %

 Volatility

 149.6

 %

 Remaining term (in years)

 1.09

 The Company performs routine procedures such as comparing prices obtained from independent sources to ensure that appropriate fair values are recorded.

 F- 28

 Concentration of Risk

 i)

 Credit risk

 Financial instruments that potentially subject us to a concentration of credit risk consist of cash, cash equivalents and accounts receivable. Our cash balances are primarily invested in money market funds or on deposits at high credit quality financial institutions.

 As of December 31, 2024 and 2023, the
Company had one 1 and two 2 major customers, respectively, that represented more than 10% of our accounts receivable balance.

 During the year ended December 31, 2024
and 2023, the Company had three 3 customers that represented more than 10% of its revenues.

 ii)

 Supply risk

 The Company obtains a limited number of components and supplies included in its products from a small group of suppliers. During the year ended December 31, 2024, the Company had no supplier who accounted for more than 10% of its total purchases. During the year ended December 31, 2023, the Company had one supplier who accounted for more than 10% of its total purchases.

 Recent Accounting pronouncements

 Recently issued accounting pronouncements adopted during the year:

 In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses of Financial Instruments, which, amends the requirement on the measurement and recognition of expected credit losses for financial assets held. Furthermore, amendments, ASU 2019-10 and ASU 2019-11 provided additional clarification for implementing ASU 2016-13. ASU 2016-13 is effective for the Company beginning January 1, 2023, with early adoption permitted. The Company adopted the standard on January 1, 2023 and included the related disclosures in the consolidated financial statements.

 Recently issued accounting pronouncements not yet adopted:

 On December 14, the FASB issued, ASU 2023-09, Improvements to Income Tax Disclosures, a final standard on improvements to income tax disclosures. The standard requires disaggregated information about a reporting entity's effective tax rate reconciliation as well as information on income taxes paid. The standard applies to all entities subject to income taxes and is intended to benefit investors by providing more detailed income tax disclosures that would be useful in making capital allocation decisions. For public business entities (PBEs), the new requirements will be effective for annual periods beginning after December 15, 2024. The guidance will be applied on a prospective basis with the option to apply the standard retrospectively. The Company is currently in the process of evaluating the effect of this guidance on its financial statements.

 In November 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standard Update ("ASU") No. 2023-07, "Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures", which requires companies to disclose significant segment expenses and other segment items used by the Chief Operating Decision Maker ("CODM") on an annual and interim basis as well as provide in interim periods all disclosures about a reportable segment's profit or loss and assets that are currently required annually. Additionally, the Company will be required to disclose the title and position of the CODM. The new standard is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. This ASU will have no impact on results of operations, cash flows or financial condition.

 F- 29

 3. Related party disclosures

 Balances with related parties

 Schedule of Related party disclosures

 2024

 2023

 Due to related parties

 Vassilios Gregoriou

 $

 $

 -

 Maria Gregoriou

 -

 Emory S. De Castro

 -

 Total

 $

 $

 -

 The outstanding balances as of December 31, 2024 due to the Company's executives and officers primarily relate to short-term promissory notes with the Company. The notes are due by August 31, 2026 and bear interest at a rate of 5.00 % per annum. Emory S. De Castro's balance of $180 thousand is comprised of $128 thousand related to the promissory note and $52 thousand relates to certain expenses paid for on behalf of the Company.

 Transactions with related parties

 Related parties' transactions are in the normal course of operations and are measured at the amount of consideration established and agreed to by related parties.

 4. Accounts receivable, net

 Accounts receivable consist of the following:

 Schedule of accounts receivable

 2024

 2023

 Accounts receivable from third party customers

 $

 2,799

 $

 Less: Allowance for credit losses

 ( 1,837

)

 ( 285

)

 Accounts receivable, net

 $

 $

 For the years ended December 31, 2024 and 2023, changes in the allowance for credit losses were as follows:

 Schedule of changes in allowance for credit losses

 2024

 2023

 Balance at beginning of year

 $

 ( 285

)

 $

 ( 218

)

 Additions

 ( 1,653

)

 ( 62

)

 Income from unused provisions

 -

 Utilized provisions during the year

 -

 -

 Foreign exchange fluctuations

 ( 5

)

 Balance at end of year

 $

 ( 1,837

)

 $

 ( 285

)

 F- 30

 5. Inventories

 Inventories consist of the following:

 Schedule of inventories

 2024

 2023

 Raw materials and supplies

 $

 4,540

 $

 4,864

 Work-in-process

 -

 Finished goods

 Total

 $

 4,769

 $

 5,213

 Provision for inventory

 ( 4,761

)

 ( 5,018

)

 Total

 $

 $

 The changes in the provision for inventory is as follows:

 Schedule of changes in provision for slow moving inventory

 2024

 2023

 Balance at beginning of year

 $

 ( 5,018

)

 $

 ( 45

)

 Additions

 ( 83

)

 ( 4,917

)

 Income from unused provisions during the year

 -

 Utilized provisions during the year

 -

 Foreign exchange fluctuations

 ( 56

)

 Balance at end of year

 $

 ( 4,761

)

 $

 ( 5,018

)

 Additions to provision for inventory includes provision for slow moving inventory at various locations, considering Company's high uncertainty over realization of inventory in future sales projects or in research and development projects and provision for reducing the carrying value of inventory to net realizable values.

 6. Prepaid expenses and other current assets

 Prepaid expenses are analyzed as follows:

 Schedule of prepaid expenses

 2024

 2023

 Prepaid insurance expenses

 $

 $

 Prepaid research expenses

 Prepaid rent expenses

 -

 -

 Other prepaid expenses

 Total

 $

 $

 Prepaid insurance expenses as of December 31, 2024 and 2023 mainly include prepayments to insurers for directors' and officers' insurance services for liabilities that may arise in their capacity as directors and officers of a public entity.

 Prepaid research expenses as of December 31, 2024 and 2023 mainly relate to prepayments for expenses under the grant agreements and Cooperative Research and Development Agreement as discussed in Note 18.

 F- 31

 Other prepaid expenses as of December 31, 2024 and 2023 mainly include prepayments for professional fees and purchases, which also include costs to fulfill a contract with customers which are expected to be recognized within 2024, upon delivery of services to these customers.

 Other current assets are analyzed as follows:

 Schedule of other current assets

 2024

 2023

 VAT receivable

 $

 $

 Grant receivable

 Purchases under receipt

 -

 Other receivables

 Accrued sublease income

 -

 Total

 $

 $

 Grant receivable as of December 31, 2024 and 2023 relate to accrued income from grants as disclosed in Note 2.

 7. Goodwill and Intangible Assets

 Goodwill

 As of December 31, 2024 and 2023, the Company had no remaining goodwill related to the acquisitions of UltraCell, SerEnergy, and FES, which is analyzed as follows:

 Schedule of goodwill

 Gross

 Cumulative
 Impairment

 Net

 Goodwill on acquisition of UltraCell

 $

 $

 ( 631

)

 $

 -

 Goodwill on acquisition of SerEnergy and FES

 29,399

 ( 29,399

)

 -

 Total goodwill

 $

 30,030

 $

 ( 30,030

)

 $

 -

 The Company performed a qualitative analysis for quarter ended June 30, 2023 and determined that triggering events for two of the Company's reporting units, UltraCell and SerEnergy / FES, had occurred which would require testing goodwill and long-lived assets, including definite-lived intangibles, for impairment.

 The Company considered the triggering events related to current and expected future economic and market conditions and their impact on the Company, as well as the current revenue forecasts. Given certain market factors, the Company determined that these triggering events had occurred and would require a quantitative analysis to be performed.

 As a part of the impairment assessment, the Company reviewed significant fair value input assumptions including revenues, margin, and capital expenditures to reflect current market conditions. Other changes in valuation assumptions included increases in interest rates and market volatility, resulting in higher discount rates.

 F- 32

 UltraCell Reporting Unit

 In the second quarter of 2023, the Company updated the forecasted future cash flows of UltraCell used in the fair value measurement of the intangible assets and goodwill using a combination of market, cost and income approach methods. The Company is phasing out use of the UltraCell trade name and therefore recognized an impairment charge of $ 0.4 million during the period. The Patented Technology was valued with the multi-period excess earnings method, which is an income approach. The discount rate used for the valuation of the Patented Technology increased to 17.7% from 11.6% at the time of the acquisition of UltraCell. The Company determined that the undiscounted cash flows related to the Patented Technology was less than the current carrying value and therefore recognized an impairment charge of $3.3 million during the period. The Company determined that the fair value of the reporting unit utilizing the updated forecast was less than its current carrying value. As a result, the Company recorded a goodwill impairment charge of $ 0.6 million for the year ended December 31, 2023, and did no t record a goodwill impairment charge for the year ended December 31, 2024.

 SerEnergy and FES Reporting Unit

 In the second quarter of 2023, the Company updated the forecasted future cash flows of SerEnergy and FES used in the fair value measurement of the intangible assets and goodwill using a combination of market, cost and income approach methods. The Company acquired finite-lived intangible assets, including patents, process know-how, and order backlog in conjunction with the SerEnergy and FES acquisition. The Company determined the undiscounted cash flows attributable to the IPR&D was greater than the current carrying value. As a result, the Company believes that the updated long-term forecast did not indicate impairment related to IPR&D. All other finite-lived intangible assets related to the SerEnergy and FES acquisition were previously fully amortized or impaired. The Company determined that the fair value of the reporting unit was $13.6 million utilizing the updated forecast, which was less than its current carrying value. As a result, the Company recorded a goodwill impairment charge of $ 5.1 million for the year ended December 31, 2023, and did no t record a goodwill impairment charge for the year ended December 31, 2024.

 During the fourth quarter of 2023, the Company fully impaired IPR&D given it is unlikely to recognize a future benefit from the intangible asset.

 Intangible Assets

 Information regarding our intangible assets, including assets recognized from our acquisitions, as of December 31, 2024 and 2023 is as follows:

 Schedule of intangible assets

 As of December 31, 2024

 Gross

 Amortization

 Cumulative
 Impairment

 Net

 Finite-lived intangible assets:

 Software

 ( 165

)

 -

 Total intangible assets

 $

 $

 ( 165

)

 $

 -

 $

 As of December 31, 2023

 Gross

 Amortization

 Cumulative
 Impairment

 Net

 Indefinite-lived intangible assets:

 Trade name "UltraCell"

 $

 $

 -

 $

 ( 406

)

 $

 -

 Total indefinite-lived intangible assets

 $

 $

 -

 $

 ( 406

)

 $

 -

 Finite-lived intangible assets:

 Patents

 21,221

 ( 3,247

)

 ( 17,974

)

 -

 Process know-how (IPR&D)

 2,612

 ( 1,017

)

 ( 1,595

)

 -

 Order backlog

 ( 266

)

 -

 -

 Software

 ( 154

)

 -

 Total finite-lived intangible assets

 $

 24,332

 $

 ( 4,684

)

 $

 ( 19,569

)

 $

 Total intangible assets

 $

 24,738

 $

 ( 4,684

)

 $

 ( 19,975

)

 $

 F- 33

 During the year ended December 31, 2024, the Company recorded additions of less than $0.1 million to software. The Company did not record any additions to indefinite-lived intangible assets in the year ended December 31, 2023.

 During the year ended December 31, 2023, the Company recorded $ 0.2 million of amortizing intangible assets related to software. The amortizing intangible assets consist of patents, process know-how (IPR&D), and software which are amortized over 10 years, 6 years, and 5 years respectively. The amortization expense for the intangible assets for the years ended December 31, 2024 and 2023 was $ 0.1 million and $ 0.2 million, respectively.

 All remaining intangible assets, other than software, from the UltraCell and SerEnergy and FES acquisitions were impaired during the year ended December 31, 2023.

 Amortization expense is recorded on a straight-line basis. Assuming constant foreign currency exchange rates and no change in the gross carrying amount of the intangible assets, future amortization expense related to the Company's intangible assets subject to amortization as of December 31, 2024 is expected to be as follows:

 Schedule of future amortization expense

 Fiscal Year Ended December 31,

 2025

 $

 2026

 2027

 2028

 2029

 Thereafter

 -

 Total

 $

 8. Property, plant and equipment, net

 Property, plant and equipment, net, consisted of the following:

 Schedule of property, plant and equipment, net

 2024

 2023

 Land, Buildings & Leasehold Improvements

 $

 $

 12,565

 Machinery

 4,512

 11,734

 Equipment

 1,747

 2,591

 Assets under construction

 -

 -

 $

 7,124

 $

 26,890

 Less: accumulated depreciation

 ( 102

)

 ( 3,673

)

 Less: impairment

 ( 2,384

)

 ( 2,384

)

 Total

 $

 4,638

 $

 20,833

 F- 34

 During the year ended December 31, 2024, the Company did no t have any additions to property, plant and equipment.

 During the year ended December 31, 2023, additions to property, plant and equipment of $ 9.1 million, primarily consisted of machines and assets under construction related to the Hood Park facility. Additionally, on April 27, 2023, the Company entered into an agreement with ETTEL S.A. to purchase land in Kozani, Greece in the amount of 0.8 million.

 On June 29, 2024, in an effort to reduce costs, the Company decided to relinquish the facility located at Hood Park and secured a substitute tenant to occupy the space. The Company and the landlord agreed to accelerate the expiration of the lease to occur on June 30, 2024. The Company had a letter of credit in the amount of $ 750 thousand in favor of the landlord, which letter of the credit was released to the landlord in satisfaction of any claims against the Company. During the year ended December 31, 2024, the Company wrote off $ 9.8 million of leasehold improvements, $ 0.5 million of furniture, $ 1.7 million of right-of-use asset, $ 1.5 million of operating lease liabilities and $ 6.9 M of long-term operating lease liabilities as part of the exit of Hood Park. As of December 31, 2023, the Company had $ 10.4 million of leasehold improvements and $ 0.5 million of furniture that would be forfeited as part of the exit of Hood Park. The Company recognized a net loss on disposal of $3.5 million in connection with the expiration of the lease at Hood Park during the year ended December 31, 2024.

 On May 7, 2024, the Company entered into an agreement to sell two coating machines (part of its property, plant and equipment) from the Hood Park facility for $0.9 million resulting in a loss of $2.5 million. On May 8, 2024, the Company received an initial deposit of $0.3 million of the purchase price, and received the remaining $0.6 million of the purchase price in July 2024. The remaining machinery and equipment from Hood Park were relocated for use at the Company's other locations.

 During the year ended December 31, 2024, the Company recognized losses of $ 0.3 million on the sale of machinery to the Discontinued Subsidiaries.

 During the year ended December 31, 2023, the Company transferred $ 11.5 million of assets under construction to land, buildings and leasehold improvements related to the Hood Park facility.

 Depreciation expense during the years ended
December 31, 2024 and 2023 was $1.6
 1,564 million and $3.0
 2,325 million respectively.

 During the three months ended June 30, 2023, the Company decided to consolidate certain of its German operations with its operations in Denmark and Greece. In July 2023, the Company initiated the process to communicate its plan to affected employees in Germany and to relocate certain equipment to either Denmark or Greece. As part of this consolidation, the Company anticipated it would dispose of equipment below its current carrying value, resulting in an impairment charge of $0.3 million during the second quarter of 2023. The affected employees continued to provide service through their termination dates, and as a result, the Company did not incur material severance charges.

 The Company has a short-term loan payable which is partially collateralized with the Company's property, plant and equipment, refer to Note 13.

 9. Other non-current assets

 Other non-current assets as of December 31, 2024 are comprised of advances to suppliers for the acquisition of fixed assets of $0.1 million and guarantees to suppliers of $ 0.2 million.

 Other non-current assets as of December 31, 2023 are mostly comprised of guarantees to suppliers of $ 0.2 million.

 10. Trade and other payables:

 Trade and other payables as of December 31,
2024 and December 31, 2023 include balances of suppliers and consulting service providers of $16.7 16,730 million and $4.0 3,996
million, respectively.

 The increase in trade and other payables for
the year ended December 31, 2024 is driven by an $11.6
 9,528 million payable between the Company and one of its Discontinued Subsidiaries which was previously eliminated as intercompany
activity.

 F- 35

 11. Other current liabilities

 As of December 31, 2024 and 2023, other current liabilities consist of the following:

 Schedule of other current liabilities

 2024

 2023

 Accrued expenses (1)

 $

 $

 Other short-term payables

 1,303

 Taxes and duties payable

 Provision for unused vacation

 -

 Social security funds

 Overtime provision

 -

 Total

 $

 2,210

 $

 1,035

 Other short-term payables largely consist of salary payable to the Company's officers who have not received a salary payment since May 2024.

 (1)

 Accrued expenses are analyzed as follows:

 Schedule of accrued expenses

 2024

 2023

 Accrued expenses for legal and consulting fees

 $

 $

 Accrued payroll fees

 -

 Other accrued expenses

 Total

 $

 $

 Other accrued expenses mainly consist of accrued staff expenses and audit fees.

 12. Leases

 The Company enters into operating lease agreements for the use of real estate and certain other equipment. The Company determines if an arrangement contains a lease at inception, which is the date on which the terms of the contract are agreed to and the agreement creates enforceable rights and obligations. The impacts of accounting for operating leases are included in Right-of-use assets, Operating lease liabilities, and Long-term operating lease liabilities in the Company's consolidated balance sheets.

 On February 5, 2021, the Company entered into a lease agreement by and among the Company, in its capacity as tenant, and BP Hancock LLC, a Delaware limited liability company, in its capacity as landlord. The lease provides for the rental by the Company of office space at 200 Clarendon Street, Boston, MA 02116 for use as the Company's executive offices. Under the terms of the lease, the Company leases 6,041 square feet at an initial fixed annual rent of $ 0.5 million. The term of the lease is for five 5 years (unless terminated as provided in the lease) and commenced on April 1, 2021. The Company provided security in the form of a security deposit in the amount of $ 0.1 million which is included in Other non-current assets on the consolidated balance sheet as of December 31, 2023. On April 17, 2024, the landlord terminated the lease for past due rent totaling $0.2 million and seized the security deposit of $0.1 million.

 F- 36

 On January 9, 2023, the Company entered into a sublease agreement by and among the Company, in its capacity as sublandlord, BP Hancock LLC, a Delaware limited liability company, in its capacity as landlord, and Hughes Boston, Inc. ("Hughes"), in its capacity as subtenant. The sublease provides for the rental by Hughes of office space at 200 Clarendon Street, Boston, MA 02116. Under the terms of the sublease, Hughes subleases 6,041 square feet at an initial fixed annual rent of $ 0.6 million and will increase 3.0% on each anniversary of the sublease commencement date. The term of the sublease is through March 2026 (unless terminated as provided in the sublease) and the sublease commencement date was February 1, 2023. The sublease was terminated on April 17, 2024 in connection with the termination of the lease agreement with BP Hancock LLC, in its capacity as landlord.

 Additionally, the Company's subsidiaries, Advent Technologies S.A. and Advent Technologies LLC, have in place rental agreements for the lease of office and factory spaces.

 On March 8, 2021, the Company entered into
a lease for 21,401 square
feet as a product development and manufacturing center at Hood Park in Charlestown, MA. Under the terms of the lease, the Company
will pay an initial fixed annual rent of $ 1.5
million. The lease had a term of eight years and five months 8.5,
with an option to extend for five 5 years, and commenced in October 2022. The Company was obliged to provide security in the
form of a security deposit in the amount of $ 0.8
million before commencement of the lease.

 On April 1, 2024, the Company agreed with the landlord of the Hood Park facility for a 4-month rate abatement period (March through June 2024) and to extend the term of the lease for 4 additional months. On June 29, 2024, in an effort to reduce costs, the Company decided to abandon the facility at Hood Park and was able to find a new tenant to occupy the space. The Company and the landlord agreed to accelerate the expiration of the lease to occur on June 30, 2024. The Company had a letter of credit in the amount of $ 750 thousand in favor of the landlord, which letter of the credit was released to the landlord in satisfaction of any claims against the Company. The Company wrote off $ 1.7 million of right-of-use asset and $ 8.5 million of operating lease liabilities with the acceleration of the expiration of the lease.

 Rental expense for all operating leases was $ 0.7 million and $ 1.5 million for the years ended December 31, 2024 and 2023, respectively. For the years ended December 31, 2024 and 2023, rental expense for short-term leases was less than $ 0.1 million and $ 0.3 million, respectively.

 As of December 31, 2024 and 2023, the right of
use assets, net associated with operating leases was $0.3 274
million and $3.2
 3,157 million, respectively.

 Other information related to the operating leases are presented in the following table:

 Schedule of operating leases

 Year ended

 Year ended

 2024

 2023

 Cash payments (in thousands)

 $

 1,385

 $

 2,139

 Weighted average remaining lease term (years)

 1.9

 6.04

 Weighted average discount rate

 5.7

 %

 7.2

 %

 As of December 31, 2024, undiscounted maturities of operating lease liabilities are as follows (amounts in thousands):

 Schedule of maturities of operating lease liabilities

 Operating
 Leases

 Fiscal Year Ended December 31,

 2025

 $

 2026

 2027

 2028

 -

 2029

 -

 Thereafter

 -

 Total undiscounted lease payments

 $

 Less: imputed interest

 ( 15

)

 Total discounted lease payments

 $

 Less: current portion

 ( 89

)

 Long-term lease liabilities

 $

 F- 37

 13. Short-term loan payable

 On November 5, 2024, the Company entered into a term loan agreement with Agile Capital Funding, LLC as collateral agent, and Agile Lending, LLC, a Virginia limited liability company as "Lead Lender". The Company borrowed $ 594 thousand, net of fees paid to the lenders of $ 66 thousand. The Company is required to make weekly payments of approximately $ 31 thousand through maturity on June 19, 2025. The effective interest rate is 292.82% per year, assuming all payments are made on time. If the Company fails to make a payment on time the loan will be in default and the Company will be subject to an additional 5.00 % default rate. Upon the prepayment of any principal amount, the Company is obligated to pay a prepayment fee comprising make-whole premium payment on account of such principal so paid, which Prepayment Fee shall be equal to the aggregate and actual amount of interest (at the contract rate of interest) that would be paid through the Maturity Date. The Company may pay off the loan 30 days after funding for $792 thousand and 60 days after funding for $858 thousand.

 The loan is collateralized with all of the Company's goods, accounts, equipment, inventory, contract rights or rights to payment of money, leases, license agreements, franchise agreements, general intangibles (including intellectual property), commercial tort claims, documents, instruments (including any promissory notes), chattel paper (whether tangible or electronic), cash, deposit accounts and other collateral accounts, all certificates of deposit, fixtures, letters of credit rights (whether or not the letter of credit is evidenced by a writing), securities, and all other investment property, supporting obligations, and financial assets, whether now owned or hereafter acquired, wherever located; and all of the Company's books and records relating to the foregoing, and any and all claims, rights and interests in any of the above and all substitutions for, additions, attachments, accessories, accessions and improvements to and replacements, products, proceeds and insurance proceeds of any or all of the foregoing.

 14. Private Placement Warrants and Working Capital Warrants

 In connection with the Business Combination, the Company assumed 131,343 Private Placement Warrants issued upon AMCI's initial public offering. In addition, upon the closing of the Business Combination, the working capital loan provided by AMCI's Sponsor to AMCI was converted into 13,333 Working Capital Warrants, which were also assumed. The terms of the Working Capital Warrants are the same as those of the Private Placement Warrants.

 As of December 31, 2024 and 2023, the Company had an aggregate of 65,671 Private Placement Warrants and Working Capital Warrants outstanding, respectively. Each Private Placement Warrant and Working Capital Warrant entitles the registered holder to purchase one 1 share of Common Stock at a price of $ 345.00 per share, subject to adjustment, at any time commencing 30 days after the completion of the Business Combination. The Public Warrants expire five 5 years after the closing of the Business Combination or earlier upon redemption or liquidation.

 The Private Placement Warrants and Working Capital Warrants are identical to the Public Warrants, except that the Private Placement Warrants and Working Capital Warrants and the common stock issuable upon the exercise of those warrants were not transferable, assignable or salable until 30 days after the completion of a Business Combination, subject to certain limited exceptions. Additionally, the Private Placement Warrants and Working Capital Warrants are exercisable on a cashless basis and be non-redeemable so long as they are held by the initial purchasers or their permitted transferees. If those warrants are held by someone other than the initial purchasers or their permitted transferees, they will be redeemable by the Company and exercisable by such holders on the same basis as the Public Warrants. As of December 31, 2024, an aggregate of 65,671 Private Placement Warrants and Working Capital Warrants are held by its initial purchasers.

 According to the provisions of the Private Placement Warrants and Working Capital Warrants warrant agreements, the exercise price and number of shares of common stock issuable upon exercise of those warrants may be adjusted in certain circumstances including in the event of a stock dividend, or recapitalization, reorganization, merger or consolidation. Private Placement Warrants and Working Capital Warrants are classified as liabilities in accordance with the Company's evaluation of the provisions of ASC 815-40-15, which provides that a warrant is not indexed to the issuer's common stock if the terms of the warrant require an adjustment to the exercise price upon a specified event and that event is not an input to the fair value of the warrant with a fixed exercise price and fixed number of underlying shares.

 F- 38

 15. Employee benefits

 Employee Tax-Deferred Savings Plans

 The Company offers a 401(k) savings plan (the "401(k) Plan") to all full-time employees that provides for tax-deferred salary deductions for eligible employees (beginning the first month following an employee's hire date). Employees may choose to make voluntary contributions of their annual compensation to the 401(k) Plan, limited to an annual maximum amount as set periodically by the IRS. Employee contributions are fully vested when made. Under the 401(k) Plan, there is no option available to the employee to receive or purchase the Company's common stock. Matching contributions of 5 % under the 401(k) Plan aggregated $ 0.2 and $ 0.2 million for the years ended December 31, 2024 and 2023, respectively.

 Employee Defined Benefit Plans

 Under Greek labor law, employees are entitled to staff leaving indemnity in the event of dismissal or retirement with the amount of payment varying in relation to the employee's compensation, length of service and manner of termination (dismissed or retired). Employees who resign or are dismissed with cause are not entitled to staff leaving indemnity. The provision for retirement obligations is classified as defined benefit plan under ASC 715-30 and is based on an actuarial valuation.

 As of December 31, 2024 and 2023, the defined
benefit obligation presented in the consolidated balance sheets was $0.1 97 million and $0.1 83 million, respectively.

 The changes in the defined benefit obligation for the years ended December 31, 2024 and 2023 were as follows (in thousands):

 Schedule of defined benefit plans disclosures

 2024

 2023

 Liability at beginning of year

 $

 $

 Interest cost

 Service cost

 Actuarial (gains) / losses

 -

 ( 15

)

 Foreign exchange fluctuations

 ( 5

)

 Liability at end of year

 $

 $

 For the years ended December 31, 2024 and 2023, the amounts included in the consolidated statements of operations and in the consolidated statements of comprehensive income (loss) were as follows (in thousands):

 Schedule of amounts included in the consolidated statements of operations

 2024

 2023

 Amounts included on the consolidated statements of operations:

 Interest cost

 $

 $

 Service cost

 Total

 $

 $

 Schedule of amounts included in the consolidated statements of comprehensive income (loss)

 2024

 2023

 Amounts included on the consolidated statements of comprehensive income (loss):

 Actuarial (gains) / losses

 $

 -

 $

 ( 15

)

 Total

 $

 -

 $

 ( 15

)

 F- 39

 Methodology

 ASC 715 requires that retirement benefit arrangements should be classified as defined benefit or defined contribution plans. Defined contribution plans are accounted for on a cash basis, i.e., the Net Periodic Benefit Cost in any period is equal to the employer cash contributions. The accounting treatment of defined benefit plans is more complicated and requires actuarial valuations because the standard requires the costs of defined benefit plans to be attributed to periods of employee service.

 The Retirement Indemnities Plan (under Greek Law 4093) has been classified by the Company as unfunded defined benefit plans for ASC 715 accounting purposes.

 The actuarial methodology uses an approach which considers the benefits in respect of service completed before the valuation date (past service) separately from benefits in respect of service expected to be completed after the valuation date (future service). This approach enables us to determine the defined benefit obligation and the cost of the benefits accruing in the year following the valuation date.

 The calculation is based on the Projected Unit Credit method.

 Actuarial Assumptions

 The actuarial assumptions are the best estimates at the valuation date and are taken into account at the calculation of the Defined Benefit Obligation.

 The principal actuarial assumptions used are:

 Schedule of actuarial assumptions

 Valuation Date

 Financial Assumptions

 2024

 2023

 Discount rate

 3.08

 %

 3.08

 %

 Future salary increases

 2.40

 %

 2.40

 %

 Inflation

 1.10

 %

 2.10

 %

 Valuation Date

 Demographic Assumptions

 2024

 2023

 Mortality (1)

 EVK 2000 (male and female)

 Disability (1)

 50% EVK 2000

 Retirement age limits (2)

 As defined by the Greek main insurance institution for each employee.

 Turnover (3)

 0.00 %

 (1)

 Mortality Table: The mortality rate of employees is defined according to EVK 2000 (male and female), which is widely accepted as unbiased.

 (2)

 Turnover Rates: For the purposes of the actuarial study, the turnover rate was estimated based on the Company's historical data, estimated future development and long-term economic trends.

 (3)

 Retirement ages are those provided by primary Greek insurance carrier and depend mainly on sex, class of worker, having incorporated the latest additions to the age limits of Greek Laws 4093/2012 and 4336/2015.

 F- 40

 Sensitivity Analysis

 The sensitivity analysis of defined benefit obligation against changes in principal assumptions is as follows:

 Schedule of sensitivity analysis

 Effect on liability in financial
 year 2024

 Change in
 assumption by

 Increase in
 assumption

 Decrease in
 assumption

 Discount rate

 0.50

 %

 - 9

 %

 + 10

 %

 Annual salary increase

 0.50

 %

 + 6

 %

 - 8

 %

 16. Stockholders' Equity / (Deficit)

 Shares Authorized

 As of December 31, 2024, the Company had authorized a total of 501,000,000 shares for issuance with 500,000,000 shares designated as common stock, par value $ 0.0001 per share and 1,000,000 shares designated as preferred stock, par value $ 0.0001 per share.

 Common Stock

 On February 6, 2023, 2,958 shares of common stock were issued in connection with the Company's 2021 Equity Incentive Plan (the "Plan").

 On February 8, 2023, 13,448 shares of common stock were issued in connection with the Plan.

 On March 23, 2023, 1,687 shares of common stock were issued in connection with the Plan.

 On March 24, 2023, 38 shares of common stock were issued in connection with the Plan.

 On June 12, 2023, 4,301 shares of common stock were issued in connection with the Plan.

 On July 7, 2023, 2,151 shares of common stock were issued in connection with the Plan.

 On July 26, 2023, 1,875 shares of common stock were issued in connection with the Plan.

 On September 8, 2023, 5,200 shares of common stock were issued in connection with the Plan.

 On October 12, 2023, 226 shares of common stock were issued in connection with the Plan.

 From April 12, 2023 through September 12, 2023, 314,696 shares of common stock were issued in connection with the Purchase Agreement with Lincoln Park.

 From October 25, 2023 through December 26, 2023, 176,323 shares of common stock were issued in connection with the At the Market Offering with H.C. Wainwright & Co., LLC.

 F- 41

 On December 27, 2023, 333,333 shares of common stock were issued in a Registered Direct Offering.

 From February 2, 2024, through March 28, 2024, 24,976 shares of common stock were issued in connection with the At the Market Offering with H.C. Wainwright & Co., LLC for net proceeds of $ 0.1 million.

 From April 1, 2024, through April 15, 2024, 31,751 shares of common stock were issued in connection with the At the Market Offering with H.C. Wainwright & Co., LLC for net proceeds of $ 0.2 million.

 As of December 31, 2024, and December 31, 2023, there were 2,636,508 and 2,580,159 shares of issued and outstanding common stock with a par value of $ 0.0001 per share, respectively.

 Reverse Stock Split

 On April 29, 2024 and April 30, 2024, our stockholders and Board, respectively, approved a reverse stock split of our Common Stock, at a ratio of 1-for-30 (the "Reverse Stock Split"), as of the Effective Date. The Effective Date of the Reverse Stock Split with the Secretary of the Commonwealth of Massachusetts was 5:00 p.m. on May 13, 2024 and May 14, 2024 in the marketplace.

 On the Effective Date, the total number of shares of our Common Stock held by each shareholder was converted automatically into the number of whole shares of Common Stock equal to (i) the number of issued and outstanding shares of Common Stock held by such shareholder immediately prior to the Reverse Stock Split, divided by (ii) 30.

 No fractional shares were issued in connection with the Reverse Stock Split, and stockholders who would otherwise be entitled to a fractional share received a proportional cash payment, resulting in the reduction of 378 shares. The Reverse Stock Split did not have any effect on the stated par value of the Company's Common Stock. The rights and privileges of the holders of shares of Common Stock will be unaffected by the Reverse Stock Split.

 The Company is authorized to issue 501,000,000 shares of Common Stock and that number did not change as a result of the Reverse Stock Split.

 The consolidated financial statements and footnote disclosures have been updated to reflect the retrospective effect of the reverse stock split for all periods presented.

 Purchase Agreement with Lincoln Park

 On April 10, 2023, the Company entered into the Purchase Agreement with Lincoln Park, which provides that the Company has the right, but not the obligation, to sell to Lincoln Park up to $ 50 million worth of shares of the Company's Common Stock ("Purchase Shares") from time to time over the 36 -month term of the Purchase Agreement. Concurrently with entering into the Purchase Agreement, the Company also entered into a registration rights agreement with Lincoln Park, pursuant to which the Company agreed to register the resale of the shares of the Company's Common Stock that have been and may be issued to Lincoln Park under the Purchase Agreement pursuant to a registration statement. The Company will control the timing and amount of any sales of Purchase Shares to Lincoln Park pursuant to the Purchase Agreement.

 Under the Purchase Agreement, on any business day selected by the Company, the Company may direct Lincoln Park to purchase up to 6,667 shares of its Common Stock on such business day (or the purchase date) (a "Regular Purchase"), provided that the closing sale price of the Company's Common Stock on the Nasdaq Stock Market ("Nasdaq") on the applicable purchase date is not below $15.00 and subject to other adjustments. A Regular Purchase may be increased to up to (i) 8,333 shares if the closing sale price of the Company's Common Stock on Nasdaq is not below $45.00 on the applicable purchase date; (ii) 10,000 shares if the closing sale price of the Company's Common Stock on Nasdaq is not below $90.00 on the applicable purchase date; and (iii) 13,333 shares if the closing sale price of the Company's common stock on Nasdaq is not below $150.00 on the applicable purchase date. The Company may direct Lincoln Park to purchase shares in Regular Purchases multiple times on the same business day, provided the Company has not failed to deliver Purchase Shares for the most recent prior Regular Purchase.

 The purchase price per share for each such Regular Purchase will be equal to the lesser of (a) the lowest sale price for the Company's Common Stock on Nasdaq on the purchase date of such shares; and (b) the average of the three lowest closing sale prices for the Company's Common Stock on Nasdaq during the 10 consecutive business days prior to the purchase date of such shares.

 F- 42

 In addition, the Company may also direct Lincoln Park, on any business day on which the Company has submitted a Regular Purchase notice for the maximum amount allowed for such Regular Purchase, to purchase an additional amount of the Company's Common Stock (an "Accelerated Purchase") of up to the lesser of (a) three times the number of shares purchased pursuant to such Regular Purchase; and (b) 30% of the aggregate shares of the Company's Common Stock traded on Nasdaq during all or, if certain trading volume or market price thresholds specified in the Purchase Agreement are crossed on the applicable Accelerated Purchase date, the portion of the normal trading hours on the applicable Accelerated Purchase date prior to such time that any one of such thresholds is crossed (the "Accelerated Purchase Measurement Period").

 The purchase price per share for each such Accelerated Purchase will be equal to 95% of the lower of (a) the volume-weighted average price of the Company's Common Stock on Nasdaq during the applicable Accelerated Purchase Measurement Period on the applicable Accelerated Purchase date; and (b) the closing sale price of the Company's Common Stock on Nasdaq on the applicable Accelerated Purchase date.

 The Company may also direct Lincoln Park on any business day on which an Accelerated Purchase has been completed and all of the shares to be purchased thereunder have been delivered to Lincoln Park in accordance with the Purchase Agreement, to purchase an additional amount of the Company's Common Stock (the "Additional Accelerated Purchase"), as described in the Purchase Agreement.

 In the case of Regular Purchases, Accelerated Purchases and Additional Accelerated Purchases, the purchase price per share will be equitably adjusted for any reorganization, recapitalization, non-cash dividend, stock split, reverse stock split or other similar transaction occurring during the business days used to compute the purchase price.

 The Purchase Agreement prohibits the Company from directing Lincoln Park to purchase any shares of Common Stock if those shares, when aggregated with all other shares of Common Stock then beneficially owned by Lincoln Park and its affiliates (as calculated pursuant to Section 13(d) of the Securities Exchange Act of 1934, as amended, and Rule 13d-3 thereunder), would result in Lincoln Park and its affiliates beneficially owning more than 9.99 % of the then total outstanding shares of the Company's Common Stock.

 Upon the execution of the Purchase Agreement, the Company issued 21,186 shares of Common Stock to Lincoln Park as consideration for its commitment to purchase shares of the Company's Common Stock under the Purchase Agreement. Lincoln Park has agreed not to cause or engage in any manner whatsoever, any direct or indirect short selling or hedging of the Company's Common Stock.

 The Company evaluated the contract that includes the right to require Lincoln Park to purchase additional shares of Common Stock in the future ("put right") considering the guidance in ASC 815-40, "Derivatives and Hedging - Contracts on an Entity's Own Equity" ("ASC 815-40") and concluded that it is an equity-linked contract that does not qualify for equity classification, and therefore requires fair value accounting. The Company has analyzed the terms of the put right and has concluded that it has immaterial value as of December 31, 2024 and December 31, 2023.

 During the year ended December 31, 2023, the Company incurred costs of approximately $0.9 million related to the execution of the Purchase Agreement. Of the total costs incurred, approximately $0.6 million was paid in Common Stock to Lincoln Park as a commitment fee and $ 0.03 million to reimburse Lincoln Park for expenses. These transaction costs were included in other income / (expenses), net in the consolidated statement of operations. Approximately $ 0.2 million was incurred for legal fees, which were included in administrative and selling expenses on the consolidated statement of operations.

 During the year ended December 31, 2023, the Company issued and sold an aggregate of 293,509 shares pursuant to the Purchase Agreement and received net proceeds of $ 5.5 million. During the year ended December 31, 2023, the Company incurred approximately $ 0.3 million of expenses, related to the discount on the issuance of common stock to Lincoln Park, which is included in other income / (expenses), net in the consolidated statement of operations.

 As the Company's common stock price is below $15.00 per share, the Company is unable to utilize the facility and did not transact under it for the year ended December 31, 2024.

 F- 43

 At the Market Offering Agreement

 On June 2, 2023, the Company entered into an At The Market Offering Agreement (the "ATM Agreement") with H.C. Wainwright & Co., LLC, as sales agent (the "Agent"), to create an at-the-market equity program under which it may sell up to $50 million of shares of the Company's common stock (the "Shares") from time to time through the Agent (the "ATM Offering"). Under the ATM Agreement, the Agent will be entitled to a commission at a fixed rate of 3.0 % of the gross proceeds from each sale of Shares under the ATM Agreement.

 Sales of the Shares, if any, under the ATM Agreement may be made in transactions that are deemed to be "at-the-market equity offerings" as defined in Rule 415 under the Securities Act, including sales made by means of ordinary brokers' transactions, including on the Nasdaq Capital Market, at prevailing market prices at the time of sale or as otherwise agreed with the Agent. The Company has no obligation to sell, and the Agent is not obligated to buy or sell, any of the Shares under the Agreement and may at any time suspend offers under the Agreement or terminate the Agreement. The ATM Offering will terminate upon the termination of the ATM Agreement as permitted therein. The Shares will be issued pursuant to the Company's previously filed Registration Statement on Form S-3 (File No. 333-271389) that was declared effective on May 2, 2023, and a prospectus supplement and accompanying prospectus relating to the ATM Offering filed with the SEC on June 2, 2023.

 Deferred offering costs associated with the ATM Agreement are reclassified to additional paid in capital on a pro-rata basis when the Company completes offerings under the ATM Agreement. Any remaining deferred costs will be expensed to the statements of operations should the planned offering be terminated.

 During the year ended December 31, 2023, the Company issued and sold an aggregate of 176,323 shares of common stock under the ATM Offering.

 During the year ended December 31, 2024, the Company issued and sold an aggregate of 56,727 shares of common stock under the ATM Offering.

 Registered Direct Offering and Engagement Letter with Joseph Gunnar & Co., LLC

 On December 22, 2023, the Company entered into a Securities Purchase Agreement (the "Gunnar Purchase Agreement") with those certain purchasers named therein (the "Purchasers") pursuant to which the Company agreed to issue and sell, in a public offering, directly to the Purchasers (the "Registered Direct Offering"), 333,333 shares of common stock. The purchase price per share of Common Stock was $6.00, resulting in gross proceeds of $2,000,000 and net proceeds of approximately $1.8 million, after deducting estimated expenses payable by the Company associated with the Registered Direct Offering.

 On December 22, 2023, the Company entered into an engagement letter with Gunnar, pursuant to which Gunnar agreed to serve as the exclusive placement agent for the Company, on a reasonable best-efforts basis, in connection with the Registered Direct Offering. The Company paid Gunnar an aggregate cash fee equal to 9.0 % of the gross proceeds of the Registered Direct Offering, and agreed to reimburse Gunnar up to a total of $ 25,000 for actual fees and expenses of legal counsel and other out-of-pocket expenses.

 Public Warrants

 In connection with the Business Combination, the Company assumed the Public Warrants issued upon AMCI's initial public offering.

 As of December 31, 2024, the Company had 735,069 Public Warrants outstanding. Each Public Warrant entitles the registered holder to purchase one share of common stock at a price of $ 345.00 per share, subject to adjustment, at any time commencing 30 days after the completion of the Business Combination. The Public Warrants will expire five years after the completion of the Business Combination or earlier upon redemption or liquidation. During the second quarter of 2021, certain warrant holders exercised their option to purchase an additional 760 shares at $ 345.00 per share. These exercises generated $ 262,177 additional proceeds to the Company and increased the Company's shares outstanding by 760 shares. During 2023, one original Private Warrant Holder sold all their Private Placement Warrants resulting in a reclassification to Public Warrants. Following these exercises, as of December 31, 2024, the Company's Public Warrants amounted to 813,314.

 F- 44

 Once the warrants become exercisable, the Company may redeem the Public Warrants:

 –

 in whole and not in part;

 –

 at a price of $ 0.01 per warrant;

 –

 upon not less than 30 days' prior written notice of redemption;

 –

 if, and only if, the reported last sale price of the Company's common stock equals or exceeds $ 540 per share for any 20 trading days within a 30-trading day period ending three business days before the Company sends the notice of redemption to the warrant holders; and

 –

 if, and only if, there is a current registration statement in effect with respect to the shares of common stock underlying such warrants.

 If the Company calls the Public Warrants for redemption, management will have the option to require all holders that wish to exercise the Public Warrants to do so on a "cashless basis," as described in the warrant agreement. The exercise price and number of shares of common stock issuable upon exercise of the warrants may be adjusted in certain circumstances including in the event of a stock dividend, or recapitalization, reorganization, merger or consolidation. However, the warrants will not be adjusted for issuance of common stock at a price below its exercise price. In addition, the warrant agreement provides that in case of a tender offer or exchange that involves 50% or more of the Company's stockholders, the Public Warrants may be settled in cash, equity securities or other assets depending on the kind and amount received per share by the holders of the common stock in such consolidation or merger that affirmatively make such election.

 The Public Warrants are classified in equity in accordance with the Company's evaluation of the provisions of ASC 480 and ASC 815. The Company analyzed the terms of the Public Warrants and concluded that there are no terms that provide that the warrant is not indexed to the issuer's common stock. The Company also analyzed the tender offer provision discussed above and considering that upon the Closing of the Business Combination the Company has a single class of common shares, concluded that the exception discussed in ASC 815-40-25 applies, and thus equity classification is not precluded.

 Stock-Based Compensation Plans

 2021 Equity Incentive Plan

 The Company's Board of Directors and shareholders previously approved the Plan to reward certain employees and directors of the Company. The Plan has been established to advance the interests of the Company by providing for the grant to Participants of Stock and Stock-based Awards. The maximum number of shares of Common Stock that may be delivered in satisfaction of Awards under the Plan is 569,306 shares. On April 29, 2024, the stockholders voted to increase the number of shares of Common Stock issuable under the Company's 2021 Equity Incentive Plan from 230,530 to 569,306.

 Stock Options

 Pursuant to and subject to the terms of the Plan the Company entered into separate Stock Option Agreements with each participant according to which each participant is granted an option (the "Stock Option") to purchase up to a specific number of shares of common stock set forth in each agreement with an exercise price equal to the market price of Company's common stock at the date of grant. The Company did not grant Stock Options during the years ended December 31, 2024 and December 31, 2023.

 F- 45

 The Stock Options are granted to each participant in connection with their employment with the Company. The Stock Options vest on a graded basis over four 4 years. The Company has a policy of recognizing compensation cost on a straight-line basis over the total requisite service period for the stock options. The Company recognized compensation cost of $ 1.6 million and $ 3.3 million in respect of Stock Options granted, which is included in administrative and selling expenses in the consolidated statement of operations for the years ended December 31, 2024 and 2023, respectively. The Company also has a policy of accounting for forfeitures when they occur.

 The following table summarizes the activities for the Company's unvested stock options for the year ended December 31, 2024:

 Schedule
 of activities for unvested stock option

 options

 Weighted Average
 Exercise Price

 Weighted Average
 Remaining
 Vesting Period

 Aggregate
 Intrinsic
 Value (1)

 Unvested as of December 31, 2023

 57,894

 $

 214.20

 Granted

 -

 -

 Vested

 ( 22,240

)

 $

 251.36

 Forfeited

 ( 25,327

)

 $

 182.63

 Unvested as of December 31, 2024

 10,327

 $

 212.02

 0.50 years

 $

 -

 (1)

 The aggregate intrinsic value is calculated as the difference between the closing market price of $5.00 per share of the Company's common stock on December 31, 2024 and the exercise price, times the number of stock options where the closing stock price is greater than the exercise price that would have been received by the option holders had all option holders exercised their options on that date.

 As of December 31, 2024, there was $ 0.4 million of unrecognized compensation cost related to unvested stock options. This amount is expected to be recognized over the remaining vesting period of stock options.

 Restricted Stock Units

 Pursuant to and subject to the terms of the Plan the Company entered into separate Restricted Stock Units ("RSUs") with each participant. On the grant date of RSUs, the Company grants to each participant a specific number of RSUs as set forth in each agreement, giving each participant the conditional right to receive without payment one 1 share of common stock. The RSUs are granted to each participant in connection with their ongoing employment with the Company. The Company has in place Restricted Stock Unit Agreements that vest within one 1 year and Restricted Stock Unit Agreements that vest on a graded basis over four 4 years. The Company has a policy of recognizing compensation cost on a straight-line basis over the total requisite service period. The Company recognized compensation cost of $ 3.2 million and $ 6.6 million in respect of RSUs, which is included in administrative and selling expenses in the consolidated statement of operations for the years ended December 31, 2024 and 2023, respectively. The Company also has a policy of accounting for forfeitures when they occur.

 Restricted Stock Units have been granted during the year ended December 31, 2024 as follows:

 Schedule of activities of restricted stock

 Grant Date
 Fair Value

 Granted on June 26, 2024

 22,988

 $

 4.50

 Total restricted stock units granted in 2024

 22,988

 F- 46

 The following table summarizes the activities for our unvested RSUs for the year ended December 31, 2024:

 Schedule
 of activities for unvested RSU stock

 Weighted Average
 Grant Date
 Fair Value

 Weighted Average
 Remaining
 Vesting Period

 Aggregate
 Intrinsic
 Value (1)

 Unvested as of December 31, 2023

 67,894

 $

 200.1

 Granted

 22,988

 $

 4.50

 Vested

 ( 52,728

)

 $

 114.28

 Forfeited

 ( 27,827

)

 $

 191.21

 Unvested as of December 31, 2024

 10,327

 $

 245.33

 0.5 years

 $

 51,635

 (1)

 The aggregate intrinsic value is calculated based on the fair value of $5.00 per share of the Company's common stock on December 31, 2024 due to the fact that the restricted stock units carry a $0 purchase price.

 As of December 31, 2024, there was $ 0.6 million of unrecognized compensation cost related to unvested RSUs. This amount is expected to be recognized over the remaining vesting period of Restricted Stock Unit Agreements.

 Accumulated Other Comprehensive Loss

 Other comprehensive income (loss) is defined as other changes in stockholders' equity that do not represent transactions with stockholders or in the Company's stock. Changes in accumulated other comprehensive loss were as follows:

 Schedule of changes in accumulated other comprehensive loss

 Foreign Currency Translation
 Adjustments

 Actuarial
 Gains / (Losses)

 Total Accumulated
 Other Comprehensive
 Income (Loss)

 Balance as of December 31, 2022

 $

 ( 2,587

)

 $

 ( 17

)

 $

 ( 2,604

)

 Other comprehensive (loss) from continuing operations

 ( 125

)

 ( 110

)

 Other comprehensive (loss) from discontinued operations

 -

 Balance as of December 31, 2023

 $

 ( 2,332

)

 $

 ( 2

)

 $

 ( 2,334

)

 Other comprehensive (loss) from continuing operations

 -

 Other comprehensive (loss) from discontinued operations

 1,519

 -

 1,519

 Balance as of December 31, 2024

 $

 ( 155

)

 $

 ( 2

)

 $

 ( 157

)

 F- 47

 17. Revenue

 Revenue is analyzed as follows:

 Schedule of revenue

 2024

 2023

 Sales of goods

 $

 $

 Sales of services

 3,077

 Total revenue from contracts with customers

 $

 3,276

 $

 1,536

 The timing of revenue recognition is analyzed as follows:

 2024

 2023

 Timing of revenue recognition

 Revenue recognized at a point in time

 $

 $

 Revenue recognized over time

 2,750

 Total revenue from contracts with customers

 $

 3,276

 $

 1,536

 As of December 31, 2024 and 2023, Advent recognized contract assets of $ 623 thousand and $ 9 thousand, respectively, on the consolidated balance sheets.

 As of December 31, 2024 and 2023, Advent recognized contract liabilities of $ 3.2 million and $ 0.4 million, respectively, in the consolidated balance sheets. During the years ended December 31, 2024 and 2023, the Company recognized the amount of $ 0.1 million and $ 0.1 million in revenues.

 18. Collaborative Arrangements

 Cooperative Research and Development Agreement

 In August 2020, the Company entered into a Cooperative Research and Development Agreement ("CRADA") with Triad National Security, LLC ("TRIAD"), Alliance for Sustainable Energy LLC ("ASE"), and Brookhaven Science Associates ("BSA"). The purpose of this project is to build a fuel cell prototype that moves this technology closer to commercial readiness which was sanctioned by the Los Alamos National Laboratory and the National Renewable Energy Laboratory. The Government's estimated total contribution, which is provided through TRIAD's, ASE's, and BSA's respective contracts with the Department of Energy is $ 1.2 million, subject to available funding. As a part of the CRADA, the Company is required to contribute $ 1.2 million in cash and $ 0.6 million of in-kind contributions, such as personnel salaries. The cash payments are capitalized and amortized on a straight-line basis over the life of the contract. In-kind contributions are expensed as incurred. To date, the Company has not recognized any revenue from the CRADA. In December 2022, the term of the agreement was extended until March 3, 2024. In January 2024, the term of the agreement was extended until September 3, 2024.

 Expenses from Collaborative Arrangements

 For the years ended December 31, 2024 and 2023 an amount of $ 0.1 million and $ 1.6 million, respectively, has been recognized in research and development expenses line on the consolidated statements of operations.

 F- 48

 19. Convertible Bond Loan

 On May 25, 2022, Advent SA and UNIFUND entered into an agreement to finance Cyrus with a convertible Bond Loan of 1.0 million. As a part of this transaction, Advent SA offered 0.3 million in bond loans with an annual interest rate of 8 %. The term of the loan is three 3 years and there is a surcharge of 2.5 % for overdue interest.

 Cyrus business relates to the research and experimental development in natural sciences and mechanics, the construction of pumps and hydrogen compressors and the wholesale of compressors. Hydrogen compressors are critical part of the Hydrogen Refueling Stations (HRS) to be used by transport applications. Cyrus has developed a prototype Metal Hydride Compressor which offers unique advantages. The proceeds from the Bond Loan are to cover Cyrus's working capital needs in the context of its operation and the product development.

 Mandatory conversion of the Bond Loan will occur in the event of qualified financing which is equivalent to a share capital increase by Cyrus in the first three years from the execution of the Bond Loan agreement with a total amount over 3 million which is covered by third parties unrelated to the basic shareholders or by investors related to them.

 The Company continues to fully reserve the Bond Loan as of December 31, 2024.

 20. Income Taxes

 The components of loss before income taxes for the years ended December 31, 2024 and 2023 were as follows:

 Schedule of components of loss before income taxes

 2024

 2023

 Domestic

 $

 ( 26,816

)

 $

 ( 35,233

)

 Foreign

 ( 3,253

)

 ( 15,751

)

 Total loss before income taxes

 $

 ( 30,069

)

 $

 ( 50,984

)

 The components of income tax provision (benefit) for the years ended December 31, 2024 and 2023 were as follows:

 Schedule of components of income tax provision (benefit)

 2024

 2023

 Federal:

 Current

 $

 ( 55

)

 $

 ( 52

)

 Deferred

 -

 -

 Total federal income tax (benefit) provision

 ( 55

)

 ( 52

)

 State:

 Current

 -

 ( 30

)

 Deferred

 -

 -

 Total state income tax (benefit) provision

 -

 ( 30

)

 International (Non-US):

 Current

 -

 -

 Deferred

 -

 -

 Total international income tax (benefit) provision

 -

 -

 Total income tax (benefit) provision

 $

 ( 55

)

 $

 ( 82

)

 F- 49

 Income tax (benefit) provision differs from the amount that would be provided by applying the statutory U.S. corporate income tax rate of 21 % for the years ended December 31, 2024 and 2023 due to the following items:

 Schedule of income tax (benefit) provision

 2024

 2023

 Current tax at U.S. statutory rate

 $

 ( 6,315

)

 $

 ( 10,707

)

 Effect of state tax

 ( 1,636

)

 ( 1,132

)

 Effect of valuation allowance

 8,963

 13,450

 Warranty Liability

 ( 12

)

 ( 83

)

 Effect of non-US income tax rates

 ( 288

)

 ( 4,100

)

 Impairment

 ( 875

)

 1,073

 Stock compensation

 1,677

 Other, net

 ( 91

)

 ( 260

)

 Total income tax (benefit) provision

 $

 ( 55

)

 $

 ( 82

)

 Deferred tax assets and liabilities are recognized for the anticipated future tax effects of temporary differences between the financial statement basis and the tax basis of the Company's assets and liabilities at the applicable tax rates in effect. The principal components of Company's deferred tax assets (liabilities) as of December 31, 2024, and 2023 include the following:

 Schedule of deferred tax assets and liabilities

 2024

 2023

 Deferred Tax Assets:

 Net operating loss carryforwards

 $

 31,425

 $

 26,759

 Capital loss

 12,345

 -

 Reserves and accruals

 1,348

 1,126

 Stock compensation

 3,496

 1,423

 Lease Liability

 2,511

 Sec 174 Cap

 1,714

 1,823

 Intangibles

 1,013

 1,073

 Other

 2,875

 1,137

 Total deferred tax assets before valuation allowance

 $

 54,287

 $

 35,852

 Less: Valuation Allowance

 ( 53,944

)

 ( 32,654

)

 Total deferred tax assets, net of valuation allowance

 $

 $

 3,198

 Deferred Tax Liabilities:

 Fixed assets

 ( 296

)

 ( 300

)

 Lease ROA

 ( 47

)

 ( 2,898

)

 Intangibles

 -

 Other

 -

 Total deferred tax liabilities

 $

 ( 343

)

 $

 ( 3,198

)

 Net deferred tax assets/(liabilities)

 $

 -

 $

 -

 F- 50

 A valuation allowance for deferred tax assets is recorded when it is more likely than not that some or all of the benefit from the deferred tax asset will not be realized. The Company provides a valuation allowance to offset deferred tax assets for net operating losses incurred during the year and for other deferred tax assets where, in the Company's opinion, it is more likely than not that the financial statement benefit of these losses will not be realized. The Company's valuation allowance increased by approximately $ 21.3 million during the year ended December 31, 2024 mainly due to net operating losses generated during the period.

 As of December 31, 2024, the Company had U.S. federal and state net operating loss carryforwards of $ 78.4 million and $ 70.3 million, respectively, which may be used to offset future taxable income, if any. As of December 31, 2023, the Company had U.S. federal and state net operating loss carryforwards of $ 64.9 million and $ 56.8 million, respectively, which may be used to offset future taxable income, if any. The Company's U.S. federal and state net operating loss carryforwards begin to expire in 2033 and the U.S. federal net operating losses generated in 2018- 2022 can be carried forward indefinitely. As of December 31, 2024, the Company had U.S. federal and state credit carryforwards of $ 0.7 million and $ 0.2 million, respectively, which may be used to offset future taxable income, if any. The Company's U.S. federal and state credit carryforwards begin to expire in 2043. The Company's ability to utilize these net operating loss carryforwards and tax credit carryforwards may be limited in the future if the Company experiences an ownership change pursuant to Internal Revenue Code Section 382 and 383. An ownership change occurs when the ownership percentages of 5% or greater stockholders change by more than 50% over a three-year period.

 The Company also has net operating loss carryforwards in Greece of approximately $ 14.0 million that begin to expire in 2026 and in Germany of approximately $ 25.5 million that can be carried forward indefinitely.

 The Company's policy is to classify interest and penalties, if any, as components of the income tax provision in the consolidated statement of operations. The Company has not recorded any interest or penalty in the consolidated statement of operations for the years ended December 31, 2024 and 2023. The Company considers many factors when evaluating and estimating its tax positions and the impact on income tax expense, which may require periodic adjustments, and which may not accurately anticipate actual outcomes. It is reasonably possible that the amount of the unrecognized benefit with respect to certain of the Company's unrecognized tax positions will significantly increase or decrease within the next twelve months. However, based on the uncertainties associated with finalizing audits with the relevant tax authorities including formal legal proceedings, it is not possible to reasonably estimate the impact of any such change. The provision for unaudited tax years as of December 31, 2024 and December 31, 2023 amounted to approximately $0.2 million, relating to possible tax liabilities which may arise from potential future examination for the tax years 2017, 2018 and 2019 by the Greek Independent Tax Authority.

 The Company conducts business globally and, as a result, files income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. In the normal course, the Company is subject to examinations by taxing authorities throughout the world. The material jurisdictions in which the Company is subject to potential examination include the United States, Germany and Greece. The Company's 2018 and subsequent tax years remain open to examination by the German Federal Central Tax Office and the Company's 2017 and subsequent tax years remain open to examination by the Greek Independent Authority for Public Revenue. Carryforward attributes that were generated prior to tax years mentioned may still be adjusted upon examination by certain jurisdiction tax authorities if they either have been, or will be, utilized in a future period.

 The Company's foreign subsidiaries have incurred losses since inception and the Company has no undistributed earnings as of December 31, 2024.

 F- 51

 21. Segment Reporting and Information about Geographical Areas

 Reportable Segments

 The Company develops and manufactures high-temperature proton exchange membranes ("HT-PEM" or "HT-PEMs") and fuel cell systems for the off-grid and portable power markets and plans to expand into the mobility market. The Company's current revenue is derived from the sale of fuel cell systems and from the sale of MEAs, membranes, and electrodes for specific applications in the fuel cell and energy storage (flow battery) markets. The research and development activities are viewed as another product line that contributes to the development, design, production and sale of fuel cell products; however, it is not considered a separate operating segment. The Company has identified one 1 business segment.

 As a single reportable segment entity, the determined measure of profit or loss is the Company's consolidated net income (loss). Consolidated asset information for the Company's single reportable segment is presented in the Company's consolidated balance sheets.

 The table below is a summary of the segment net loss from continuing operations before income taxes, including significant segment expenses:

 Schedule of significant segment expenses

 2024

 2023

 $

 3,276

 $

 1,536

 ( 1,488

)

 ( 6,964

)

 Gross profit (loss)

 1,788

 ( 5,428

)

 1,582

 ( 3,225

)

 ( 7,567

)

 ( 14,318

)

 ( 28,825

)

 Amortization of intangibles

 ( 29

)

 ( 207

)

 ( 3,617

)

 ( 1,048

)

 -

 ( 9,763

)

 ( 18,369

)

 ( 50,713

)

 ( 535

)

 ( 272

)

 Loss Contingency

 ( 4,724

)

 -

 Net gains/ (losses) on disposal/write-offs of property, plant and equipment and intangible assets

 ( 6,235

)

 -

 ( 870

)

 Segment and consolidated net loss before income taxes

 ( 30,069

)

 ( 50,984

)

 Geographic Information

 The following table presents revenues, by geographic location (based on the location of the entity selling the product or service) for the years ended December 31, 2024 and 2023:

 Schedule of revenues, by geographic location

 2024

 2023

 North America

 $

 3,101

 $

 1,268

 Europe

 Total net sales

 $

 3,276

 $

 1,536

 F- 52

 22. Commitments and contingencies:

 Litigation

 The Company is subject to legal and regulatory actions that arise from time to time in the ordinary course of business. The assessment as to whether a loss is probable or reasonably possible, and as to whether such loss or a range of such loss is estimable, often involves significant judgment about future events.

 There is no material pending or threatened litigation against the Company that remains outstanding as of December 31, 2024, that is considered probable or reasonably possible, with the following exceptions:

 On May 9, 2025, Chris Kaskavelis ("Kaskavelis"), a former employee of Advent SA, filed a claim against the Company's wholly owned subsidiary in Greece, Advent SA, before the Athens First Instance Court (LABOR CLAIMS). A hearing is on the claim is scheduled for October 20, 2025. In connection with the claim, Kaskavelis alleges that Advent should pay him the following amounts: (1) 107,194.90 for unpaid wages, (2) 612,206.40 for unpaid severance, (3) 50,000 for "moral damages" and (4) related court expenses stemming from the lawsuit. The Company denies the Kaskavelis claims as they are unsubstantiated and without merit as he was terminated by the Company for cause per the terms of his employment agreement. Notwithstanding the same, and as a contingency, the Company has accrued for the unpaid wages portion of his claim in the amount of 107,194.90 ($124,000). The Company believes that the remainder of the Kaskavelis claims are wholly without merit and intends to defend itself vigorously in these proceedings, although we cannot accurately predict the ultimate outcome of this matter.

 On August 16, 2024, the Company was informed that an arbitration decision and award was decided in favor of F.E.R. fischer Edelstahlrohre GmbH ("F.E.R."), pursuant to the arbitration provisions of the Share Purchase Agreement dated June 25, 2021, whereby the Company acquired SerEnergy and FES on August 31, 2021. The arbitration was held in Frankfurt am Main, Germany in accordance with the Arbitration Rules of the German Arbitration Institute. The award in favor of F.E.R. is in the amount of approximately 4.5 million euro. The Company appealed the decision and instructed its counsel to file a motion with the Higher Regional Court of Frankfurt to set aside the arbitral award. In February 2025, the parties met to discuss the possibility of a settlement and the framework for such a settlement, but there can be no guaranty that the parties will be able to finalize an agreement, and at this time, the Company cannot accurately predict the outcome of this matter.

 By letter dated September 14, 2023, a purported shareholder of the Company made a demand to inspect the Company's books and records pursuant 8 Del. C. § 220 ("Demand"). The Demand purported to request access to books and records of the Company and its predecessor, AMCI Acquisition Corp. ("AMCI"), to investigate possible alleged breaches of fiduciary duty by AMCI's board of directors and officers in connection with its merger with the Company on February 4, 2021. As of May 24, 2024, the purported shareholder entered into a tolling agreement with the Company and the former directors of AMCI that tolled all claims for the period January 29, 2024 through June 30, 2024. On June 5, 2024, the purported shareholder filed a putative class action complaint ("Complaint") on behalf of in the Delaware Court of Chancery alleging claims of breach of fiduciary duty and unjust enrichment in connection with the SPAC transaction against former officers and directors of AMCI. The Company is not named as a defendant in the Complaint. The Company is not aware as to whether the Complaint has been served on the defendants.

 Guarantee letters

 The Company had contingent liabilities in relation to performance guarantee letters and other guarantees provided to third parties that arise from its normal business activity and from which no substantial charges are expected to arise. As of December 31, 2024, and 2023, the Company did no t hold any letters of guarantee.

 F- 53

 Contractual obligations

 In December 2021, the Company entered into a supply agreement by and among the Company, in its capacity as Customer, and BASF New Business GmbH, in its capacity as Seller. The supply agreement provides for the purchase by the Company of 21,000 m2 (Minimum Quantity) of membrane from BASF during the contract duration from January 1, 2022 until December 31, 2025. The Company has not purchased any additional quantities in 2024 under this agreement and on July 12, 2024, has formally requested to terminate the supply contract. On March 11, 2025, the parties agreed to terminate the agreement. The Company will return 473 sqm of membrane (stored at BASF) and 4,000 sqm of membrane from its facility in Patras, Greece to BASF by December 15, 2025. BASF will agree to waive payment of 608,412. The Company agrees to pay unpaid license fees in the amount of 44,759 by April 30, 2025. BASF will no longer require the Company to purchase 14,000 m2 quantity.

 In May 2022, the Company entered into a supply agreement by and among the Company, in its capacity as Customer, and De Nora Deutschland GmbH ("De Nora"), in its capacity as Seller. The supply agreement provides for the purchase by the Company of 3,236 (Minimum Quantity) of electrodes from De Nora during the contract duration from May 3, 2022 until June 24, 2023. As of December 31, 2024, the Company has no remaining obligations under this agreement.

 In June 2022, the Company entered into a
supply agreement by and among the Company, in its capacity as Customer, and Shin-Etsu Polymer Singapore Pte, Ltd
("Shin-Etsu"), in its capacity as Seller. The supply agreement provides for the purchase by the Company of 318,400
pieces (Minimum Quantity) of bipolar plates from Shin-Etsu during the contract duration from June 1, 2022 until June 30,
2024. In May 2023, the Company amended the supply agreement with Shin-Etsu to reduce the Minimum Quantity of bipolar plates to 75,400
pieces. In January 2024, the Company amended the supply agreement with Shin-Etsu to shift the timing of the monthly minimum
requirements and extend the agreement until September 2024. The Company has not made any purchases under the amended agreement
in 2024, the contract is currently on hold pending negotiations with Shin Etsu. Under the contract, Shin- Etsu can claim Advent to
buy the remaining purchase requirement of 57,600 pieces with the agreed purchases by the end of September 2024.

 23. Net income / (loss) per share

 Net income (loss) per share is computed by dividing net income by the weighted-average number of shares of common stock outstanding during the year.

 The following table sets forth the computation of the basic and diluted net income / (loss) per share for the years ended December 31, 2024 and 2023:

 Schedule of computation of basic and diluted net loss per share

 (Amounts in thousands, except share and per share amounts)

 2024

 2023

 Numerator:

 $

 ( 30,014

)

 $

 ( 50,902

)

 Net loss from discontinued operations

 $

)

 $

 ( 20,495

)

 $

)

 $

)

 Denominator:

 Net loss per share:

 $

 ( 11.46

)

 $

 ( 26.55

)

 Basic loss per share from discontinued operations

 $

 ( 4.19

)

 $

 ( 10.69

)

 Basic loss per share

 $

 ( 15.65

)

 $

 ( 37.24

)

 $

 ( 11.46

)

 $

 ( 26.55

)

 Diluted loss per share from discontinued operations

 $

 ( 4.19

)

 $

 ( 10.69

)

 Diluted loss per share

 $

 ( 15.65

)

 $

 ( 37.24

)

 F- 54

 Basic net income / (loss) per share is computed by dividing net income / (loss) for the periods presented by the weighted-average number of common shares outstanding during these periods.

 Diluted net income /(loss) per share is computed by dividing the net income / (loss), by the weighted average number of common shares outstanding for the periods, adjusted for the dilutive effect of shares of common stock equivalents resulting from the assumed exercise of the Public Warrants, Private Placements Warrants, Working Capital Warrants, Stock Options and Restricted Stock Units. The treasury stock method was used to calculate the potential dilutive effect of these common stock equivalents.

 As the Company incurred losses for the years ended December 31, 2024 and 2023, the effect of including any potential common shares in the denominator of diluted per-share computations would have been anti-dilutive; therefore, basic and diluted losses per share are the same.

 24. Discontinued Operations

 The assets and liabilities associated with discontinued operations were as follows for December 31, 2024, and December 31, 2023:

 Schedule of discontinued operations

2024

2023

 ASSETS OF DISCONTINUED OPERATIONS

 Current assets of discontinued operations:

 Cash and cash equivalents

 $

 -

 $

 Accounts receivable, net

 -

 Contract assets

 -

 Inventories

 -

 2,512

 Prepaid expenses and Other current assets

 -

 1,416

 Total current assets of discontinued operations

 -

 4,430

 Non-current assets:

 Property and equipment, net

 -

 Right-of-use assets

 -

 Other non-current assets

 -

 Total non-current assets of discontinued operations

 -

 Total assets of discontinued operations

 $

 -

 $

 5,271

 LIABILITIES OF DISCONTINUED OPERATIONS

 Current liabilities of discontinued operations:

 Trade and other payables

 $

 -

 $

 1,091

 Deferred income from grants, current

 -

 Contract liabilities

 -

 1,601

 Other current liabilities

 -

 Operating lease liabilities

 -

 Total current liabilities of discontinued operations

 -

 3,628

 Non-current liabilities of discontinued operations:

 Long-term operating lease liabilities

 -

 Other long-term liabilities

 -

 Total non-current liabilities of discontinued operations

 -

 Total liabilities of discontinued operations

 $

 -

 $

 4,323

 F- 55

 The following table summarizes the Company's loss from discontinued operations for the years ended December 31, 2024, and December 31, 2023:

 2024

 2023

 $

 $

 3,323

 ( 716

)

 ( 11,322

)

 Gross profit (loss)

 ( 7,999

)

 -

 ( 4,546

)

 ( 4,311

)

 ( 3,643

)

 Amortization of intangible assets

 -

 ( 435

)

 -

 ( 222

)

 ( 3,705

)

 Operating loss from discontinued operations

 ( 3,847

)

 ( 19,628

)

 -

 ( 29

)

 ( 1,597

)

 ( 4

)

 Net gains / (losses) on disposal

 ( 5,536

)

 -

 -

 ( 33

)

 Loss before income taxes from discontinued operations

)

 ( 19,694

)

 Income taxes effect on discontinued operations

 -

 ( 801

)

)

 ( 20,495

)

 Other comprehensive income/(loss)

 ( 83

)

 Comprehensive loss from discontinued operations

 ( 11,063

)

 ( 20,115

)

 25. Subsequent Events

 On April 14, 2025, the Company issued 33,778 common shares related to the vesting of restricted stock units issued in connection with its stock compensation program.

 On April 15, 2025, the Company entered into a term loan agreement with Agile Capital Funding, LLC as collateral agent, and Agile Lending, LLC, a Virginia limited liability company as "Lead Lender". The Company entered into a term loan for $ 870 thousand. The Company received net proceeds of $ 443 thousand, net of fees paid to the lenders of $ 87 thousand and its outstanding unpaid balance of the term loan dated November 5, 2024 of $340 thousand. The Company is required to make weekly payments of approximately $ 37 thousand through maturity on December 18, 2025. The effective interest rate is 250.67% per year, assuming all payments are made on time. If the Company fails to make a payment on time the loan will be in default and the Company will be subject to an additional 5.00 % default rate. Upon the prepayment of any principal amount, the Company is obligated to pay a prepayment fee comprising make-whole premium payment on account of such principal so paid, which Prepayment Fee shall be equal to the aggregate and actual amount of interest (at the contract rate of interest) that would be paid through the Maturity Date.

 The loan is collateralized with all of the Company's goods, accounts, equipment, inventory, contract rights or rights to payment of money, leases, license agreements, franchise agreements, general intangibles (including intellectual property), commercial tort claims, documents, instruments (including any promissory notes), chattel paper (whether tangible or electronic), cash, deposit accounts and other collateral accounts, all certificates of deposit, fixtures, letters of credit rights (whether or not the letter of credit is evidenced by a writing), securities, and all other investment property, supporting obligations, and financial assets, whether now owned or hereafter acquired, wherever located; and all of the Company's books and records relating to the foregoing, and any and all claims, rights and interests in any of the above and all substitutions for, additions, attachments, accessories, accessions and improvements to and replacements, products, proceeds and insurance proceeds of any or all of the foregoing.

 F- 56

 26. Supplemental Quarterly Information (Unaudited)

 The following tables reflect the Company's unaudited condensed consolidated statements of operations for each of the quarterly periods in 2024 and 2023:

 Schedule of supplemental quarterly information

 Three Months Ended,

 (Amounts in USD thousands, except share and per share amounts)

 2024

 September 30,
 2024

 June 30,

 2024

 March 31,

 2024

 $

 ( 244

)

 $

 $

 $

 2,738

 ( 592

)

 ( 336

)

 ( 83

)

 ( 477

)

 Gross profit / (loss)

 ( 836

)

 ( 208

)

 2,261

 ( 512

)

 ( 704

)

 ( 411

)

 ( 695

)

 ( 1,415

)

 ( 7,364

)

 ( 3,135

)

 2,374

 ( 6,193

)

 -

 -

 -

 Amortization of intangible assets

 ( 26

)

 ( 1

)

 ( 1

)

 ( 1

)

 ( 4,309

)

 -

 -

 ( 8,750

)

 ( 7,927

)

 2,673

 ( 4,365

)

 -

 -

 -

 ( 235

)

 ( 14

)

 ( 54

)

 ( 232

)

 1,565

 ( 1,672

)

 ( 156

)

 ( 9

)

 Loss contingency

 -

 ( 4,907

)

 Net gains/ (losses) on disposal/write-offs of property, plant and equipment and intangible assets

 6,500

 -

 ( 12,714

)

 ( 21

)

 ( 2

)

 Income / (loss) before income taxes

 ( 770

)

 ( 9,615

)

 ( 10,213

)

 ( 9,471

)

 -

 -

 -

 Income (loss) from continuing operations

 $

 ( 770

)

 $

 ( 9,615

)

 $

 ( 10,213

)

 $

 ( 9,416

)

 ( 1,073

)

 ( 8,907

)

 ( 1,060

)

 Net income / (loss)

 ( 1,843

)

 ( 18,522

)

 ( 11,273

)

 ( 9,356

)

 Net income / (loss) per share

 $

 ( 0.29

)

 $

 ( 3.65

)

 $

 ( 3.88

)

 $

 ( 3.64

)

 2,634,179

 2,584,918

 $

 ( 0.29

)

 $

 ( 3.65

)

 $

 ( 3.88

)

 $

 ( 3.64

)

 2,634,179

 2,584,918

 F- 57

 Three Months Ended,

 (Amounts in USD thousands, except share and per share amounts)

 2023

 September 30,
 2023

 June 30,

 2023

 March 31,

 2023

 $

 1,314

 $

 $

 $

 ( 5,628

)

 ( 807

)

 ( 183

)

 ( 346

)

 Gross profit / (loss)

 ( 4,314

)

 ( 695

)

 ( 162

)

 ( 257

)

 ( 2,822

)

 ( 1,197

)

 ( 1,774

)

 ( 1,774

)

 ( 18,039

)

 ( 8,000

)

 4,932

 ( 7,718

)

 Amortization of intangible assets

 ( 117

)

 ( 188

)

 ( 221

)

 ( 985

)

 ( 3

)

 ( 60

)

 -

 Impairment loss – intangible assets and goodwill

 -

 -

 ( 9,763

)

 -

 ( 24,908

)

 ( 9,631

)

 ( 6,517

)

 ( 9,657

)

 ( 134

)

 ( 72

)

 ( 487

)

 ( 6

)

 ( 22

)

 ( 56

)

 Net gains/ (losses) on disposal/write-offs of property, plant and equipment and intangible assets

 -

 -

 -

 -

 ( 1

)

 ( 113

)

 ( 798

)

 Loss before income taxes

 ( 24,250

)

 ( 9,972

)

 ( 7,519

)

 ( 9,243

)

 ( 122

)

 $

 ( 24,372

)

 $

 ( 9,891

)

 $

 ( 7,518

)

 $

 ( 9,121

)

 ( 1,360

)

 ( 1,955

)

 ( 14,313

)

 ( 2,867

)

 Net income / (loss)

 ( 25,732

)

 ( 11,846

)

 ( 21,831

)

 ( 11,988

)

 Net loss per share

 $

 ( 11.41

)

 $

 ( 4.92

)

 $

 ( 4.22

)

 $

 ( 5.26

)

 2,136,840

 2,012,382

 1,780,574

 1,733,439

 $

 ( 11.41

)

 $

 ( 4.92

)

 $

 ( 4.22

)

 $

 ( 5.26

)

 2,136,840

 2,012,382

 1,780,574

 1,733,439

 F- 58