PPC S.A.

Transaction in Own Shares • Sep 9, 2025

Announcement – Regulated information

September 9, 2025

Public Power Corporation S.A. ("PPC") announces that in the context of its buy-back programme for the purchase of up to 38,200,000of its own shares, for the period from 04.08.2025 until 08.09.2025, PPC purchased through transactions in the Athens Exchange,138,244Own Shares in total, as follows:

Date	Number of Shares	Weighted Average Price (€)
04.09.2025	54,336	14.0470
05.09.2025	44,968	14.1049
08.09.2025	38,940	14.1409

Following the above-mentioned purchases, PPC holds, since 08.09.2025,an aggregate of18,477,408 own shares, issued by it with equal voting rights, which correspond to 5.0038 % of the Company's total paid up share capital.

Following corporate actions and transactions during the current buyback programme that have already been announced – and which do not change the maximum number of shares that PPC may purchase – the total number of shares issued by PPC that it may purchase until the termination or the conclusion of the current buyback programme amounts to 86,563.

This announcement is issued pursuant to the provisions of the article 15 of L. 3556/2007, resolution No 1/434/03.07.2007 of the Hellenic Capital Market Commission's Board of Directors, as in force and in conjunction with the Circular No 33/2007 of the Hellenic Capital Markets Commission's Board of Directors, (EU) Regulation No 596/2014 of the European Parliament and of the Council dated 16.4.2014 and the Commission Delegated Regulation (EU) 2016/1052 dated 8.3.2016.

For further information please contact:

Investor Relations Department 30, Chalkokondyli str., 104 32 Athens Τ: +30 210 529 2153 +30 210 529 3665 +30 210 529 3207 ir@ppcgroup.com

The announcement may be accessed on the website of Public Power Corporation S.A. (www.ppcgroup.com) at the "Investors Relations" section.