Welcome to our dedicated page for Advent Technologies Holdng SEC filings (Ticker: ADNH), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Advent Technologies Holdings, Inc. filings document the company’s public-reporting status, capital structure and material corporate events. Recent records include a Form 25 covering removal of Class A common stock and warrants from Nasdaq listing and registration under Section 12(b), as well as a Form 12b-25 notice related to a delayed annual report.
The filing record also covers material financing arrangements, including secured promissory note terms, collateral provisions, maturity features and conversion mechanics. Advent’s disclosures identify common stock, warrants, late-reporting notices, exchange-listing status, governance matters and other corporate-status information relevant to its public-company record.
Advent Technologies Holdings, Inc. reports that its wholly owned subsidiary, Advanced Energy Technologies Single Member SA, received a notification from the Hellenic Republic Ministry of Development concerning its hydrogen project. The letter states that Project EL02 Green HIPo has been withdrawn from the Hydrogen IPCEI Hy2 Tech wave program due to a failure to meet certain internal requirements. This means the project will no longer participate in that European hydrogen innovation framework, which may affect how Advent advances this specific initiative.
Advent Technologies Holdings, Inc. filed a Form 12b-25 notifying the SEC that it cannot timely file its Annual Report on Form 10-K for the period ended December 31, 2025 because it requires additional time to complete the final review of financial statements and disclosures. The Company "anticipates that the Form 10-K will be filed within fifteen calendar days following the prescribed due date" in reliance on Rule 12b-25(b). The notice also references prior late 10-Q filings for periods ended September 30, 2025 and March 31, 2025 and is signed by CEO Gary Herman on March 31, 2026.
Advent Technologies Holdings, Inc. is being removed from listing and registration on the Nasdaq Stock Market under Section 12(b) of the Securities Exchange Act of 1934. Nasdaq filed Form 25 covering the company’s Class A common stock and warrants, meaning these securities will no longer trade on the exchange once the delisting process is complete. The filing states that Nasdaq has complied with its own rules to strike the securities from listing and registration, and that the issuer has complied with exchange rules and regulatory requirements for voluntary withdrawal where applicable.
Advent Technologies Holdings, Inc. is being removed from the Nasdaq Stock Market. Nasdaq filed a Form 25 to strike the company’s Class A common stock and warrants from listing and to withdraw their registration under Section 12(b) of the Securities Exchange Act of 1934. The exchange states it has complied with its own rules and the requirements of the securities laws for this delisting action. Once this process is complete, the company’s shares and warrants will no longer trade on Nasdaq, and investors would need to use alternative markets if trading continues elsewhere.
Advent Technologies Holdings, Inc. entered into a secured promissory note with Chris Antonopoulos for an aggregate principal amount of CHF 500,000, bearing annual interest of 8.5% and maturing on January 7, 2027. The note is secured by a first-priority security interest in certain company collateral and may be prepaid at any time without penalty.
At the lender’s option, amounts due can be converted into common stock at a price equal to the average of the three lowest trading prices during the 30 days before each conversion date. All outstanding principal and interest automatically convert into common stock upon a “Qualified Financing” that raises at least $25,000,000. The company received the funds on January 14, 2026 and plans to use them for corporate expenses and general working capital.
The terms provide for adjustments if the company later sells equity on more favorable terms. In connection with the note, Advent appointed Mr. Antonopoulos to its Board as a Class II director, serving until the 2028 annual shareholders’ meeting or his earlier departure.