Athens International Airport S.A.

Transaction in Own Shares • Dec 1, 2025

Initiation of Share Buy-back Program

Athens International Airport S.A. (the "Company"), following (a) the resolution of the Ordinary General Meeting of its shareholders dated 14.04.2025 which approved, among others, the establishment of a Share Buy-back Program (the "Share Buy-back Program" or the "Program"), according to the article 49 of Law 4548/2018, as in force, and the granting of relevant authorizations to the Board of Directors of the Company and (b) the relevant decision of its Board of Directors dated 31.10.2025, announces to the investment community its intention to commence the implementation of the Program.

The maximum number of shares to be acquired under the Share Buy-back Program will not exceed the approved by Ordinary General Meeting limit of 1% of the Company's paid-up share capital; and it is estimated at approximately 330,000 shares with minimum acquisition price €1.00 and maximum acquisition price €15.00. The Share Buy-back Program will be implemented from 01.12.2025 to 31.03.2027. The final amount and the final number of own shares to be purchased during the aforementioned period shall depend on market conditions and Company's share price and trading liquidity.

The Company has assigned the execution of the Share Buy-back Program to Alpha Finance Investment Services Single Member S.A. ("Alpha Finance" or the "Lead Manager"), pursuant to article 4 par. 2(b) of the Commission Delegated Regulation (EU) 2016/1052. Alpha Finance will act as the Lead Manager of the Program, making its trading decisions concerning the purchases of the Company's shares under the Program independently of the Company and shall, at all times, comply with the requirements, limits, and conditions of the regulatory framework.

This announcement is issued in accordance with the Athens Exchange Regulation, the Regulation (EU) No 596/2014 of the European Parliament and of the Council of 16 April 2014 and the Commission Delegated Regulation (EU) 2016/1052 of 8 March 2016.

Spata, 1 December 2025