Terna

Capital/Financing Update • Sep 29, 2025

ANNOUNCEMENT CONCERNING THE RESULTS OF THE PUBLIC OFFERING OF THE BONDS OF

"GEK TERNA S.A."

"ALPHA BANK S.A.", "PIRAEUS BANK S.A.", "EUROBANK S.A." and "NATIONAL BANK OF GREECE S.A." in their capacity as Joint Coordinators and Bookrunners of the public offering (hereinafter "Public Offering") for the issue of a common bond loan by the company "GEK TERNA S.A." (the "Company") to trading on the Fixed Income Securities Segment of the Regulated Market of the Athens Exchange, announce that, following the completion of the Public Offering on 25.09.2025 and based on the aggregated allocation results produced using the Electronic Book-Building Service of the Athens Exchange, 500,000 dematerialized common registered bonds of the Company with a nominal value of €1,000 each (the "Bonds") were allocated and as a result funds of €500 mil. were raised.

The total valid demand from investors that participated in the Public Offering was €1,192.47 mil. The broad demand from investors resulted in an oversubscription of the Public Offering by 2.4 times, while the total number of participant investors was 15,251.

The offering price of the Bonds is at par, namely at €1,000 per Bond. The final yield of the Bonds was set at 3.20% and the Bonds' interest rate at 3.20% per annum.

The Bonds were allocated based on the valid demand at the yield of 3.20%, as follows:

• a) 350,000 Bonds (70.00% of the total number of issued Bonds) to Retail Investors, out of a total number of 587,471 Bonds for which valid offers were submitted (namely, a percentage of 59.58% of the expressed demand in this specific category of investors was satisfied at the specific yield) and
• b) 150,000 Bonds (30.00% of the total number of issued Bonds) to Qualified Investors, out of a total number of 605,000 Bonds for which valid offers were submitted (namely, a percentage of 24.79% of the expressed demand in this specific category of investors was satisfied at the specific yield).

Furthermore, out of the 150,000 Bonds that were allocated to Qualified Investors, the Underwriters have received for their own account 52,000 Bonds as follows:

THIS ANNOUNCEMENT AND THE INFORMATION CONTAINED HEREIN ARE NOT INTENDED TO AND SHALL NOT BE DISTRIBUTED, IN WHOLE OR IN PART, IN ANY COUNTRY WHERE THE RELEASE, PUBLICATION OR DISTRIBUTION OF SUCH INFORMATION IS CONTRARY TO THE APPLICABLE LAWS OR REGULATIONS OR WOULD REQUIRE A LICENSE OR REGISTRATION TO THAT END. THIS ANNOUNCEMENT IS NOT AN OFFER OF SECURITIES FOR SALE OR A SOLICITATION OF AN OFFER TO PURCHASE ANY SECURITIES OF THE COMPANY IN ANY JURISDICTION IN WHICH AN OFFER IS UNLAWFUL.

Underwriter	Allocated Bonds
ALPHA BANK S.A.	12,435
PIRAEUS BANK S.A.	11,305
EUROBANK S.A.	11,304
NATIONAL BANK OF GREECE S.A.	11,304
OPTIMA BANK S.A.	5,652
Total	52,000

According to the underwriting agreement, the Underwriters had no obligation to subscribe for the Bonds.

29.09.2025

THIS ANNOUNCEMENT AND THE INFORMATION CONTAINED HEREIN ARE NOT INTENDED TO AND SHALL NOT BE DISTRIBUTED, IN WHOLE OR IN PART, IN ANY COUNTRY WHERE THE RELEASE, PUBLICATION OR DISTRIBUTION OF SUCH INFORMATION IS CONTRARY TO THE APPLICABLE LAWS OR REGULATIONS OR WOULD REQUIRE A LICENSE OR REGISTRATION TO THAT END. THIS ANNOUNCEMENT IS NOT AN OFFER OF SECURITIES FOR SALE OR A SOLICITATION OF AN OFFER TO PURCHASE ANY SECURITIES OF THE COMPANY IN ANY JURISDICTION IN WHICH AN OFFER IS UNLAWFUL.