Advent Technologies Reaches ~€5.37 Million Settlement with Fischer Over Share Purchase Dispute, May Pay Reduced ~€4.37 Million if Settled By June 2026

On July 1, 2025, Advent Technologies Holdings, Inc. (the "Company") entered into a settlement agreement and release (the "Settlement Agreement") with F.E.R. fischer Edelstahlrohre GmbH ("Fischer" and, together with the Company, the "Parties"). The Settlement Agreement was executed to resolve a previously disclosed dispute that arose in connection with that certain share purchase agreement entered into by the Parties on or about June 25, 2021 (the "Purchase Agreement"), with Fischer alleging the Company failed to make payment of the consideration due under the Purchase Agreement in full as of the date of closing under the Purchase Agreement.

In February 2025, the Parties met to discuss the possibility of a settlement and the framework for such a settlement, and on July 1, 2025, the Parties finalized and executed the Settlement Agreement.

Pursuant to the terms of the Settlement Agreement, the Company has agreed to pay Fischer €5,366,625.55 with such payment to be made in installments beginning on September 1, 2025. The Company will be entitled to a reduced settlement amount totaling €4,366,625.55 if payment is made by no later than June 30, 2026. In exchange for such reduced settlement amount, both Parties agreed to a mutual release of claims against the other Party.