Notification of Resignation of a Member of the Board of Directors 

Reconstitution of the Board of Directors

The management of ELLAKTOR S.A. (hereinafter the “Company”) informs the investment community, in accordance with the provisions of Regulation (EU) No. 596/2014 of the European Parliament, as well as the Rules of Euronext Athens (Athens Stock Exchange), that Mr. Georgios Prousanidis, Non-Executive Member of the Company’s Board of Directors, submitted on 13 May 2026 his resignation from his position and capacity as a member of the Board of Directors.

Following the above resignation, the Company’s Board of Directors, at its meeting held on 13 May 2026, was informed accordingly and accepted the resignation of the Non-Executive Member of the Board of Directors, Mr. Georgios Prousanidis. The Board did not proceed with his replacement, as the remaining members of the Board of Directors, pursuant to Article 82 para. 2 of Law 4548/2018, Article 13 para. 1 of the Company’s Articles of Association, and the relevant provisions of Law 4706/2020, are able to continue the administration, management, and representation of the Company without replacing the resigning member. Subsequently, the Board of Directors unanimously resolved to reconstitute itself in accordance with the law and the Company’s Articles of Association, as follows:

1.Georgios Mylonogiannis, son of Stamatios-Takis, Chairman of the Board of Directors, Non-Executive Member 

2. Aristeidis (Aris) Xenofos, son of Ioannis, Vice Chairman, Independent Non-Executive Member 

3.Efthymios Bouloutas, son of Theodoros, Chief Executive Officer, Executive Member 

4.Konstantinos Toumbouros, son of Pantazis, Director, Non-Executive Member 

5.Athena Chatzipetrou, daughter of Konstantinos, Director, Independent Non-Executive Member 

6.Ioanna Dretta, daughter of Grigorios, Director, Non-Executive Member 

7.Eugenia (Jenny) Leivadarou, daughter of Ioannis, Director, Independent Non-Executive Member 

8.Panagiotis Kyriakopoulos, son of Othon, Director, Non-Executive Member 

9.Georgios Triantafyllou, son of Eleftherios, Director, Non-Executive Member, and 

10.Odysseas Christoforou, son of Stamatios, Director, Independent Non-Executive Member. 

The above members of the Board of Directors meet the suitability criteria pursuant to Article 3 of Law 4706/2020, as in force, and the Company’s approved Suitability Policy. Furthermore, the requirements of Articles 3A and 5 of Law 4706/2020, as in force, regarding adequate gender representation and the total number of independent non-executive members of the Company’s Board of Directors, respectively, are also fulfilled, while the independent non-executive members fully satisfy the independence criteria of Article 9 of Law 4706/2020, as in force.

It is noted that the term of office of the current Board of Directors is five years, commencing on the date of its original election (27 January 2021) and expiring upon the election of a new Board of Directors by the Annual General Meeting of the year in which their term expires, and may not be extended beyond six (6) years.

Kifissia, May 14^th, 2026