<div id="readability-page-1"> <time datetime="2025-08-25T13:31:00.000Z"> 08/25/2025 - 09:31 AM </time> LIVERMORE, Calif., Aug. 25, 2025 (GLOBE NEWSWIRE) -- Advent Technologies Holdings, Inc. (NASDAQ: ADN), an innovation driven leader in fuel cells and hydrogen technologies is pleased to announce that it has received an initial order for its Ion Pair High Temperature Proton Exchange Membrane electrode assemblies (“HT-PEM”) from one of the major players in the energy sector. With more than 50,000 employees in over 100 countries, this energy giant’s technology is used to generate a large percentage of the world's electricity. It is actively pursuing new opportunities in the energy transition, including: <ul type="disc"><li>Strategic investments:Expanding its manufacturing capacity to meet increasing demand.</li><li>Innovative projects:Building critical grid infrastructure and developing new energy solutions with global partners.</li><li>Digital integration:Acquiring AI specialists to improve its software and analytics for utility operations.</li></ul> Gary Herman, CEO of Advent stated: “we are thrilled to be working with this global energy leader. Our Ion Pair HT-PEM technology is poised to revolutionize how people think about fuel cell technology and receiving an order from a behemoth in energy technology validates what we already know.” Dr. Emory De Castro, Advent’s Chief Technology Officer added: “we are excited to commercialize the Los Alamos Ion Pair technology. Working with major partners will help us implement this technology and accelerate adoption. Ion Pair’s higher power density and simplified packaging system sets it far apart from the competition.” About Advent Technologies Holdings, Inc. Advent Technologies Holdings, Inc. is a U.S. corporation that develops, manufactures, and assembles complete fuel cell systems as well as supplying customers with critical components for fuel cells in the renewable energy sector. Advent is headquartered in Livermore, California, with offices in Athens, Patras and Kozani, Greece. With approximately 150 patents issued, pending, and/or licensed for fuel cell technology, Advent holds the IP for next-generation HT-PEM that enables various fuels to function at high temperatures and under extreme conditions – offering a flexible fuel option for the automotive, aviation, defense, oil and gas, marine, and power generation sectors. For more information, visitwww.advent.energy. Cautionary Note Regarding Forward-Looking Statements This press release includes forward-looking statements. These forward-looking statements generally can be identified by the use of words such as “anticipate,” “expect,” “plan,” “could,” “may,” “will,” “believe,” “estimate,” “forecast,” “goal,” “project,” and other words of similar meaning. Each forward-looking statement contained in this press release is subject to risks and uncertainties that could cause actual results to differ materially from those expressed or implied by such statement. Applicable risks and uncertainties include, among others, the Company’s ability to maintain the listing of the Company’s common stock on Nasdaq; future financial performance; public securities’ potential liquidity and trading; impact from the outcome of any known and unknown litigation; ability to forecast and maintain an adequate rate of revenue growth and appropriately plan its expenses; expectations regarding future expenditures; future mix of revenue and effect on gross margins; attraction and retention of qualified directors, officers, employees and key personnel; ability to compete effectively in a competitive industry; ability to protect and enhance Advent’s corporate reputation and brand; expectations concerning its relationships and actions with technology partners and other third parties; impact from future regulatory, judicial and legislative changes to the industry; ability to locate and acquire complementary technologies or services and integrate those into the Company’s business; future arrangements with, or investments in, other entities or associations; and intense competition and competitive pressure from other companies worldwide in the industries in which the Company will operate; and the risks identified under the heading “Risk Factors” in Advent’s Annual Report on Form 10-K filed with the Securities and Exchange Commission (“SEC”) on June 6, 2025, as well as the other information filed with the SEC. Investors are cautioned not to place considerable reliance on the forward-looking statements contained in this press release. You are encouraged to read Advent’s filings with the SEC, available atwww.sec.gov, for a discussion of these and other risks and uncertainties. The forward-looking statements in this press release speak only as of the date of this document, and the Company undertakes no obligation to update or revise any of these statements. Advent’s business is subject to substantial risks and uncertainties, including those referenced above. Investors, potential investors, and others should give careful consideration to these risks and uncertainties. Contacts Advent Technologies Holdings, Inc. press@advent.energy <img src="https://imageproxy.pbkrs.com/https://www.globenewswire.com/newsroom/ti/query-bmY9T1RVeE56VXhPU00zTVRFek9USXpJekl5T1RVMk16QT0?x-oss-process=image/auto-orient,1/interlace,1/resize,w_1440,h_1440/quality,q_95/format,jpg" width="1" height="1" original-src="https://imageproxy.pbkrs.com/https://www.globenewswire.com/newsroom/ti/query-bmY9T1RVeE56VXhPU00zTVRFek9USXpJekl5T1RVMk16QT0"/> <img src="https://imageproxy.pbkrs.com/https://ml.globenewswire.com/media/NjBkZTdiZDAtMzQzOC00MGU4LTllNDctYjljZWQ1YmM4NzhjLTEzMDcxODAtMjAyNS0wOC0yNS1lbg==/tiny/Advent-Technologies-Holdings-I.png?x-oss-process=image/auto-orient,1/interlace,1/resize,w_1440,h_1440/quality,q_95/format,jpg" width="1" height="1" original-src="https://imageproxy.pbkrs.com/https://ml.globenewswire.com/media/NjBkZTdiZDAtMzQzOC00MGU4LTllNDctYjljZWQ1YmM4NzhjLTEzMDcxODAtMjAyNS0wOC0yNS1lbg==/tiny/Advent-Technologies-Holdings-I.png"/> </div>

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Advent Technologies Holdings, Inc. has received an initial order for its Ion Pair High Temperature Proton Exchange Membrane (HT-PEM) electrode assemblies from a major global energy company. This partnership aims to enhance energy transition efforts, including expanding manufacturing capacity and developing innovative energy solutions. Advent's CEO expressed excitement about the collaboration, highlighting the potential of their technology to revolutionize fuel cell applications. The company, based in Livermore, California, holds numerous patents in fuel cell technology and is focused on commercializing its advanced HT-PEM systems.

Advent Technologies Receives Order from Global Energy Giant for Ion Pair HT- PEM Electrode Assemblies | ADN Stock News