Opap S.A.

Declaration of Voting Results & Voting Rights Announcements • Dec 22, 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 19 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 17 December 2025, AIAG purchased 5,000,000 ordinary shares of the Company (ISIN GRS419003009) for a total consideration of approximately EUR 90,000,000 through an accelerated share purchase programme. In connection with the programme, AIAG simultaneously entered into a share forward transaction with Citigroup Global Markets Limited ("Citi") relating to the same ordinary shares. The share forward transaction is subject to physical settlement at a price equal to the official closing price per share on 17 December 2025. Settlement of the share forward transaction will occur in one settlement cycle after 31 March 2026 or an earlier valuation date elected by AIAG.

The transaction was executed OTC / outside the trading venue.

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

Athens, 22 December 2025 OPAP S.A.