ADNHAdvent Technologies Holdings, Inc.

About Advent Technologies Holdings, Inc. (ADNH)

Advent Technologies Holdings, Inc. (ADNH) is a company headquartered in Livermore, CA, United States whose shares trade over-the-counter on the OTCQB tier.

Advent Technologies Holdings, Inc., an advanced materials and technology development company, operates in the fuel cell and hydrogen technology markets in North America, Europe, and Asia. It develops, manufactures, and assembles fuel cell systems and critical components that determine the performance of hydrogen fuel cells and other energy systems. The company offers high-temperature proton exchange membrane (HT-PEM) fuel cells, including membrane electrode assemblies, bipolar plates, and reformers, as well as provides fuel-cell stack assembly and testing services. It serves stationary power, portable power, automotive, aviation, energy storage, and sensor markets.

Products and services

Advent Technologies Holdings, Inc. develops and manufactures high-temperature proton exchange membrane (HT-PEM) fuel cells and critical components like membrane electrode assemblies (MEAs) for a range of applications. Its products are designed to be fuel-flexible, able to use fuels such as hydrogen, methanol, natural gas, and other renewable fuels.

ADNH key facts

Ticker symbol

ADNH

Market tier

OTCQB

Headquarters

Livermore, CA, United States

Country of incorporation

US

Year of incorporation

2018

Employees

31

Estimated market cap

$1.52M (as of Jan 12, 2026)

Shares outstanding

3,788,634

Reporting standard

U.S. Reporting: SEC Reporting

Audit status

Audited

Fiscal year end

12/31

Advent Technologies Holdings, Inc. leadership

• Gary Herman — CEO
• James Coffey — COO, General Counsel
• Emory Sayre De Castro — CTO

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