Please see the attached announcement for the Share Buyback.

Athens, May 13^th 2024

Purchase of Own Shares

GR. SARANTIS S.A. (“the Company”) announces that, in implementation of the resolution of the Shareholders' Annual General Meeting dated April 23^rd 2024, the Company proceeded on May 10^th 2024 with the purchase of 15,685 own shares at the average price of 11.60 euros per share and at a total value of 181,908.96 euros.

Announcement

ELLAKTOR S.A. (hereinafter the “Company”) informs the investment community the following:

Following the Company's announcement dated 19.04.2024 regarding the decision of its Board of Directors dated 18.04.2024 to purchase additional shares of the issuer REDS SA, through the ATHEX, ELLAKTOR acquired on 10.05.2024, 55,968 common registered shares, with voting rights, issued by REDS SA, at a purchase price of €2.70 per share.

Kifissia, 10.05.2024

Please see the attached announcement.

Share Buyback

ELLAKTOR S.A. (hereinafter referred to as the "Company") announces that, in accordance with the decision of the Ordinary Shareholders General Meeting held on 22.06.2023, as well as the decision of the Board of Directors dated 14.09.2023, it proceeded on May 10^th, 2024, through the Athens Exchange member name OPTIMA BANK S.A., with the purchase of 50,000 own shares at an average price of 2.6946 euro per share and with a total transaction value of 134,729.70 euro.

In accordance with the provisions of Law 3556/2007, JUMBO S.A. announces that Mr. Vakakis Evangelos-Apostolos, Chairman of the BoD of Jumbo SA, although he does not own shares of the company, announced that on 09.05.2024 held indirectly 16,419% of the voting rights, through the foreign foundation “KARPATHIA FOUNDATION”, which controls the total of the shares of the shareholder “TANOCERIAN MARITIME CYPRUS LTD”. It is noted that the position of previous notification was 19,359%.