National Bank of Greece S.A.

Transaction in Own Shares • Jun 26, 2025

Athens, 26/06/2025

ANNOUNCEMENT ON PURCHASE OF OWN SHARES

National Bank of Greece S.A. ("the Bank"), following the resolutions of the Annual General Meeting of its Shareholders held on 30/05/2025 and its announcement of 04/06/2025 on the commencement of the implementation of the first tranche of the share buyback program approved by the above-mentioned Annual General Meeting (Tranche I), the respective approval of the Single Supervisory Mechanism (SSM) of the European Central Bank (ECB) on 28/05/2025 and its announcement of 16/06/2025 on purchase of own shares, announces that in the period from 17/06/2025 up to and including 24/06/2025 has purchased a total amount of 673,547 common shares of the Bank ("Own Shares") traded on the Athens Stock Exchange at a weighted average price of €10.7307 per share and at a total cost of €7,227,663.32. It is noted that in accordance with the resolutions of above-mentioned Annual General Meeting, the Bank intends to proceed with a subsequent cancellation of the above acquired own shares, in accordance with the relevant provisions regarding the time frame for the cancellation of Law 4548/2018.

Date	Number of Shares	Weighted Average Price (€)	Total cost (€)
17/6/2025	89,059	€ 10.7183	€ 954,561.08
18/6/2025	119,488	€ 10.6050	€ 1,267,170.24
19/6/2025	120,000	€ 10.6162	€ 1,273,944.00
20/6/2025	120,000	€ 10.7184	€ 1,286,208.00
23/6/2025	150,000	€ 10.6970	€ 1,604,550.00
24/6/2025	75,000	€ 11.2164	€ 841,230.00
Total	673,547	€ 10.7307	€ 7,227,663.32

The following transactions were executed during the abovementioned period:

Following the above transactions, the Bank holds directly a total of 4,221,669 Own Shares, which correspond to 0.46% of its share capital.

This announcement is issued in accordance with the provisions of (EU) Regulation No 596/2014, the Commission Delegated Regulation (EU) 2016/1052 and Resolution No 25 of the Stock Markets Steering Committee of the Athens Exchange.