Share Buyback

ELLAKTOR S.A. (hereinafter referred to as the "Company") announces that, in accordance with the decision of the Annual Shareholders General Meeting held on 10.07.2025 and the resolution of its Board of Directors dated 16.10.2025, as well as the Company’s relevant announcement dated 17.10.2025, it proceeded on 29.05.2026, through its EURONEXT ATHENS member, OPTIMA BANK SA, to purchase 15,000 of its own shares, at an average acquisition price of €1.4422 per share, for a total consideration of €21,633.70.

Following this, the Company holds 2,042,000 own shares, or 0.586% of the total outstanding shares.

This announcement is made in accordance with Regulation (EU) No. 596/2014 of the European Parliament and of the Council, Commission Delegated Regulation (EU) 2016/1052, and the Athens Stock Exchange Regulation.

Kifissia, 29.05.2026