PPC S.A.

Transaction in Own Shares • Dec 18, 2025

Announcement – Regulated information

December 18, 2025

Public Power Corporation S.A. ("PPC") announces that in the context of its buyback programme for the purchase of up to 36,927,000of its own shares, for the period from 11.12.2025 until 17.12.2025, PPC purchased through transactions in the Athens Exchange,83,741Own Shares in total, as follows:

Date	Number of Shares	Weighted Average Price (€)
11.12.2025	16,754	17.9070
12.12.2025	16,882	17.7729
15.12.2025	16,850	17.8136
16.12.2025	16,635	18.0349
17.12.2025	16,620	18.0518

Following the abovementioned purchases, PPC holds an aggregate of 20,552,276 shares issued by it, which correspond to 5.5657% of theCompany's total shares.

This announcement is issued in accordance with (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 Division 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.