Commencement of Share Buyback Program

ELLAKTOR S.A. (hereinafter the “Company”) informs the investment community that, in execution of the resolution of the Annual General Meeting of Shareholders dated 10.07.2025 regarding the approval of a share buyback program, the relevant announcement of the same date, and the resolution of the Board of Directors dated 16.10.2025, it intends to commence the implementation of the Share Buyback Program, pursuant to Article 49 of Law 4548/2018, for any use permitted by law.

The purchases of own shares will be carried out through the Athens Exchange. The maximum number of shares to be acquired shall not exceed one tenth (1/10) of the Company’s paid-up share capital at any given time, including treasury shares already acquired and held by the Company (currently totaling 2,027,000 treasury shares). The Program will run for a maximum period of 24 months from the date of its approval by the General Meeting, i.e., until 10.07.2027, with a minimum purchase price of thirty euro cents (€0.30) and a maximum purchase price of three euros (€3.00) per share.

The final number of treasury shares to be acquired during the aforementioned period, as well as the corresponding total consideration, will depend on market conditions, the share price, and the liquidity of the Company’s stock.

This announcement is issued 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 Exchange Rulebook.

Kifissia, 17.10.2025