PPC S.A. — Share Issue/Capital Change 2026

May 20, 2026

ppc

Announcement - Regulated information

Athens, 20 May 2026

NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION DIRECTLY OR INDIRECTLY IN OR INTO THE UNITED STATES, CANADA, AUSTRALIA, SOUTH AFRICA OR JAPAN.

ANNOUNCEMENT TO INVESTORS

Regarding the combined offering by Public Power Corporation S.A. ("PPC") of new ordinary, registered voting dematerialized shares of nominal value of €2.48 each ("New Shares"), in the context of its share capital increase with maximum offering price of €19.75 per share in cash

In accordance with Article 17(2) of Regulation (EU) 2017/1129, PPC announces that on May 19, 2026 the managers, acting solely in connection with the institutional offering, have informed the investors participating in the institutional offering that:

• In view of the strong demand received during the book-building process as of May 19, 2026, bids below €18.63 per New Share will most likely not be considered for allocation purposes.
• The target size of the offering is expected to be approximately €4.25 billion.
• Orders received as of May 19, 2026 represent demand multiple times in excess of the number of New Shares available at the aforementioned price and for this offering size.

PPC will duly inform all investors of any material developments regarding the process of the combined offering.

For further information please contact:

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

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

DISCLAIMER

This announcement constitutes a public disclosure of inside information by the Company under Article 17(1) of Regulation (EU) No 596/2014.

There can be no assurance that the Combined Offering will be completed or, if completed, as to the terms on which it will be completed.

This announcement does not constitute an offer to sell or issue, or any solicitation of an offer to purchase or subscribe for, any securities, including the New Shares, in any jurisdiction in which such offer or solicitation is unlawful. The New Shares have not been and will not be registered under the U.S. Securities Act of 1933, as amended (the "U.S. Securities Act"), and may not be offered or sold in the United States absent registration under the U.S. Securities Act or an applicable exemption from the registration requirements of the U.S. Securities Act. Subject to certain exceptions, the New Shares may not be offered or sold in Australia, Canada, South Africa or Japan or to, or for the account or benefit of, any national, resident or citizen of Australia, Canada, South Africa or Japan. The securities referred to herein have not been and will not be registered under the Securities Act or under the applicable securities laws of Australia, Canada, South Africa or Japan.

In the European Economic Area (the "EEA"), this announcement is directed only at persons who are "qualified investors" within the meaning of Article 2(e) of Regulation (EU) 2017/1129 (the "Prospectus Regulation"). This announcement is not a prospectus for the purposes of the Prospectus Regulation and is not intended and shall not constitute a public offer or advertisement of securities or an invitation to make offers to purchase any securities within the meaning of the Prospectus Regulation. This announcement has been prepared on the basis that any offer of the New Shares in any Member State of the European Economic Area ("EEA") (each, a "Relevant Member State"), other than in Greece, will be made pursuant to an exemption under the Prospectus Regulation from the requirement to publish a prospectus for offers of the New Shares. Accordingly, any person making or intending to make any offer in that Relevant Member State, other than in Greece, of the New Shares may only do so in circumstances in which no obligation arises for the Company or any of the managers to publish a prospectus pursuant to Article 3 of the Prospectus Regulation or supplement a prospectus pursuant to Article 16 of the Prospectus Regulation, in each case, in relation to such offer. Neither the Company nor the managers have authorized, nor do they authorize, the making of any offer of securities in circumstances in which an obligation arises for the Company or any managers to publish a prospectus for such offer.

In the United Kingdom ("UK"), this announcement is directed only at persons in the UK that are "qualified investors," as defined in paragraph 15 of Schedule 1 of Public Offers and Admissions to Trading Regulations 2024 (the "POATR"), who are persons (i) who have professional experience in matters relating to investments falling within Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005, as amended (the "Order"), (ii) falling within Article 49(2)(a) to (d) of the Order, and/or (iii) to whom such investment or investment activity may otherwise lawfully be

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communicated (all such persons together being referred to as "Relevant Persons"). This announcement has been prepared on the basis that any offer of the New Shares in the UK will be made pursuant to an exemption under the POATR from the prohibition in the POATR on offers of the New Shares in the UK. Accordingly, any person making or intending to make any offer in the UK of the New Shares may only do so in circumstances in which the offer falls within an exemption from the prohibition on public offers in Part 1 of Schedule 1 to the POATR. Neither the Company nor the managers have authorized, nor do they authorize, the making of any offer of securities in the UK in circumstances in which an obligation may arise for the Company or any managers to publish a prospectus for such offer.

Persons who are not "qualified investors" in the EEA or Relevant Persons in the UK should not act or rely on this announcement or any of its contents.