Opap S.A.

Declaration of Voting Results & Voting Rights Announcements • Dec 19, 2025

Release of Regulated Information pursuant to Article 19 of Regulation (EU) No 596/2014

Transaction Notification

"OPAP S.A." (the "Company"), announces, pursuant to Article 19 of Regulation (EU) No 596/2014 and the relevant provisions of Greek law, that on 18 December 2025 it received a notification from "Allwyn International AG" ("AIAG"), a legal person closely associated with the following members of the Board of Directors of the Company:

• Pavel Šaroch, Vice Chairman / Non-Executive Board Member
• Katarina Kohlmayer, Non-Executive Board Member
• Robert Chvátal, Non-Executive Board Member

in relation to the following transaction in shares of the Company.

On 18 December 2025, AIAG acquired 351,964 ordinary shares of the Company (ISIN GRS419003009) at an average price of EUR 18.1911 per share, for a total consideration of approximately EUR 6,402,612.32. The transaction was executed on the Athens Stock Exchange and on private trading venues operated as Multilateral Trading Facilities (MTFs).

This announcement is made and published by the Company as required under Regulation (EU) 596/2014.

Athens, 19 December 2025 OPAP S.A.