Opap S.A.

Notice of Dividend Amount • Sep 3, 2025

Announcement of the detachment and payment of the interim dividend

The Company OPAP S.A. announces that the Board of Directors of OPAP on the 2 nd of September 2025 approved the distribution of a total gross interim dividend of 0.50 euro per share for the financial year 2025.

The gross amount of interim dividend for the financial year 2025 amounts in total to 179,301,739.00 euros prior to the withholding tax and excluding the 11,459,263 own shares of the Company and corresponds to a gross amount of 0.50 euro per share of the Company. The amount of interim dividend of 0.50 euro per share is subject to 5% withholding tax, where applicable, in accordance with the provisions of articles 61, 62 and 62 of Greek law 4172/2013, as in force. Therefore, the net amount of interim dividend for the financial year 2025 payable to the shareholders following the above withholding tax amounts to 0.475 euro per share.

The shareholders being eligible to receive the interim dividend for the financial year 2025 are the shareholders of the Company being registered in Dematerialized Security System's records on Tuesday, 04.11.2025 (record date). As of Monday, 03.11.2025 (cut-off date), the shares of the Company will be trading in Athens Exchange without the right to the interim dividend for the financial year 2025.

The payment of the interim dividend for the financial year 2025 to the beneficiaries will commence on Monday, 10.11.2025, and will be processed through the paying bank "PIRAEUS BANK S.A.", as follows:

• 1. Through the operators of the beneficiaries in the Dematerialized Security System (Banks, custodians and securities firms), according to the ATHEXCSD Rulebook and ATHEXCSD's relevant resolutions.
• 1. Especially in cases of interim dividend payment to heirs of deceased beneficiaries, whose securities are kept in the Special Account of their Share in the DSS under the management of ATHEXCSD, dividend payment process will be carried out after the completion of the legitimation of their heirs, through "PIRAEUS BANK S.A." network for five (5) years from the end of this year (namely, until December 31st , 2031).

It is clarified that the right to collect interim dividend disperses if not collected within a period of five (5) years from the end of the year that the corresponding right was conferred to the beneficiaries (article 250, par. 15, of Greek Civil Code) and that following such term any relevant amount shall be reimbursed to the Hellenic Republic according to article 1 of legislative decree 1195/1942.

For any further information, shareholders are requested to directly contact the Company's Investor Relations Team (contact number +30 210 5798930).

ATHENS, 03.09.2025 OPAP S.A.

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