Termination of Material Agreement (Form 8-K)

As previously disclosed in a Current Report on Form 8-K filed with the Securities and Exchange Commission on August 7, 2025, on August 1, 2025, Advent Technologies Holdings, Inc. (the "Company") entered into a Securities Purchase Agreement (the "Securities Purchase Agreement") with Hudson Global Ventures LLC ("Hudson"), pursuant to which Hudson made a loan to the Company, evidenced by a Convertible Promissory Note in the aggregate principal amount of $235,000.00, including an original issue discount of $25,000.00 (the "Promissory Note"), with interest accruing at an annual rate of twelve percent (12%) to be computed on the basis of a 360-day year, in addition to a pre-funded warrant to purchase 130,000 shares of the Company's common stock, par value $0.0001 per share.

As of November 5, 2025, the Company repaid all amounts owed pursuant to the Promissory Note and satisfied all conditions of the Promissory Note; as a result of such satisfaction, the Promissory Note is satisfied in full and terminated upon repayment and satisfaction.