National Bank of Greece S.A.

Transaction in Own Shares • Jan 13, 2026

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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 announcements of 16/06/2025, 26/06/2025, 04/07/2025, 14/07/2025, 21/07/2025, 29/07/2025, 07/08/2025, 18/08/2025, 26/08/2025, 02/09/2025, 09/09/2025, 17/09/2025, 26/09/2025, 06/10/2025, 13/10/2025, 21/10/2025, 30/10/2025, 10/11/2025, 19/11/2025, 26/11/2025, 04/12/2025, 12/12/2025, 22/12/2025 and 02/01/2026 on purchase of own shares, announces that in the period from 02/01/2026 up to and including 12/01/2026 has purchased a total amount of 320,000 common shares of the Bank ("Own Shares") traded on the Athens Stock Exchange at a weighted average price of €13.9370 per share and at a total cost of €4,459,833.00. 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.

The following transactions were executed during the abovementioned period:

Date	Number of Shares	Weighted Average Price (€)	Total cost (€)
2/1/2026	55,000	13.5429	744,859.50
5/1/2026	55,000	13.6202	749,111.00
7/1/2026	55,000	13.7047	753,758.50
8/1/2026	55,000	14.3408	788,744.00
9/1/2026	50,000	14.2595	712,975.00
12/1/2026	50,000	14.2077	710,385.00
Total	320,000	13.9370	4,459,833.00

Following the above transactions, the Bank holds directly a total of 11,545,957 Οwn Shares, which correspond to 1.26% 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.