National Bank of Greece S.A.

Transaction in Own Shares • Aug 26, 2025

Athens, 26/08/2025

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 announcements of 16/06/2025, 26/06/2025, 04/07/2025, 14/07/2025, 21/07/2025, 29/07/2025, 07/08/2025 and 18/08/2025 on purchase of own shares, announces that in the period from 18/08/2025 up to and including 22/08/2025 has purchased a total amount of 249,305 common shares of the Bank ("Own Shares") traded on the Athens Stock Exchange at a weighted average price of €12.8827 per share and at a total cost of €3,211,725.94. 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	Weighted	Total cost (€)
	Shares	Average Price (€)
18/08/2025	50,000	13.0502	652,510.00
19/08/2025	50,000	12.9681	648,405.00
20/08/2025	50,000	12.7843	639,215.00
21/08/2025	50,000	12.7984	639,920.00
22/08/2025	49,305	12.8116	631,675.94
Total	249,305	12.8827	3,211,725.94

The following transactions were executed during the abovementioned period:

Following the above transactions, the Bank holds directly a total of 6,931,557 Οwn Shares, which correspond to 0.76% 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.