Opap S.A.

Board/Management Information • Jan 2, 2026

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 31 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 31 December 2025, AIAG acquired 131,967 ordinary shares of the Company (ISIN GRS419003009) at an average price of EUR 18.7743 per share, for a total consideration of approximately EUR 2,477,588.05. 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, 2 January 2026 OPAP S.A.