Business Update Announcement

Financial closing of the Sale of AKTOR CONCESSIONS

ELLAKTOR S.A.” (hereinafter referred to as the “Company” or “ELLAKTOR”) informs the investing public that, following the approval of the Hellenic Competition Commission on 15 September 2025 and the fulfillment of all other conditions precedent, the sale of AKTOR CONCESSIONS SINGLE MEMBER S.A. (“AKTOR CONCESSIONS”), to AKTOR SPECIAL PROJECTS, PPP CONCESSIONS SINGLE MEMBER S.A. (the “Purchaser”) was completed today, 29 September 2025. The Purchaser is a 100% subsidiary of AKTOR HOLDINGS, TECHNICAL AND ENERGY PROJECTS S.A. (the “Transaction”).

The Transaction concerns the sale by ELLAKTOR to the Purchaser of the entire issued share capital of AKTOR CONCESSIONS, consisting of 2,983,000 common registered voting shares, representing 100% of the fully paid share capital of the company, pursuant to the terms and conditions set forth in the binding agreement dated 30 April 2025. The Enterprise Value of AKTOR CONCESSIONS, following the necessary adjustments, amounted to €374.3m, based on the discounted cash flow method. The Transaction Consideration corresponds to the Enterprise Value, less AKTOR CONCESSIONS’ bank debt and other agreed adjustments, plus the company’s cash and cash equivalents as of the Transaction completion date, amounting to €194.6m. It is noted that AKTOR CONCESSIONS’ participation in Attiki Odos, a real estate asset, and certain other minor shareholdings were excluded from the Transaction perimeter.

UBS Europe SE acted as exclusive financial advisor to ELLAKTOR, while legal advisory services were provided by Potamitis-Vekris Law Firm and Fortsakis, Diakopoulos & Associates Law Firm.

This announcement is made in accordance with Regulation (EU) No. 596/2014 of the European Parliament and Council, as well as the applicable regulations of the Athens Stock Exchange.

Kifissia, 29.09.2025