Athens International Airport S.A.

Notice of Dividend Amount • May 12, 2025

Announcement on the response to the Company's Dividend Reinvestment Program and the use of the funds raised, in accordance with decision no. 10A/1038/30.10.2024 of the Board of Directors of the Hellenic Capital Market Commission

The company under the name "ATHENS INTERNATIONAL AIRPORT S.A." (the "Company"), in the context of its share capital increase through the reinvestment of part of the dividend for the financial year 2024, totaling €100,000,000 (before withholding a 5% tax), by the beneficiaries of the dividend who chose to reinvest the above amount in an integer number of new shares, instead of cash (the "Share Capital Increase"), announces the following to the investor's community:

2,346 shareholders, including the Company's principal shareholders, AviAlliance GmbH and the Hellenic Corporation of Assets and Participations S.A., responded positively to the Dividend Reinvestment Program, by electing to reinvest in the Company a total amount of €84,751,492.56, resulting in a participation of 89.22%, % of the total share capital.

As a result, the Share Capital Increase has been completed and was partially subscribed, in accordance with article 28 para. 1 of Law 4548/2018, through raising of funds in the total amount of €84,751,492.56, by the reinvestment of an equal amount from the dividend for the financial year 2024 by beneficiaries, corresponding to the issuance of 9,544,087 new, common, dematerialized, registered voting shares of the Company, with a nominal value of €1.00 each (the "New Shares").

Following the above, the consideration corresponding to the New Shares, based on their offer price, was offset against the portion of the dividend selected for reinvestment by the beneficiary shareholders, pursuant to article 20 para. 4 of Law 4548/2018 and the Company's Board of Directors, by its resolution dated 12.05.2025, confirmed the certification of partial payment of the amount of the Share Capital Increase and adjusted the relevant article of the Company's Articles of Association concerning the share capital.

The final subscription percentage of the Share Capital Increase amounts to 89.22% and the amount of the funds raised amounts to €84,751,492.56.

Following the above, the Company's share capital was increased by the amount of €9,544,087.00 through the issuance of 9,544,087 New Shares with a nominal value of €1.00 each, while the difference between the nominal value of the New Shares and their offer price, totaling €75,207,405.56, was credited to the "Par amount difference" account. Consequently,

the total share capital of the Company amounts to €309,544,087.00, divided into 309,544,087 common, dematerialized, registered shares with voting rights, with a nominal value of €1.00 each.

The funds raised from the Share Capital Increase, as provided in the Company's Board of Directors Report dated 15.04.2025 pursuant to article 22, para. 1 of Law 4706/2020 and section 13 of decision No. 25 of the Stock Markets Steering Committee of Athens Exchange, constitute Air Activities Capital, in accordance with the Airport Development Agreement dated 31.07.1995, ratified by Law 2338/1995, as amended and in force (the "ADA") and will be used by the Company for the provision, construction, acquisition, maintenance, repair, renewal, upgrade and operation of the assets allocated to Air Activities, in accordance with the ADA. Particularly, the raised funds will be allocated to the following uses:

• (i) The amount of €15 million will be used for funding the initial phase of capacity optimisation projects in the Athens International Airport (the "Airport"), namely construction projects, which are gradually implemented and purport to accommodate demand for the period until the completion of the Airport Expansion Program (namely the expansion plan that is being implemented by the Company in the Airport with the ultimate objective to reach capacity to serve 40 million passengers annually by 2032), such as, indicatively, new bus gates, emigration area expansion, implementation of Advanced Visual Docking Guidance System (A-VDGS) at parking stands and paved area for aircraft parking overflow.
• (ii) The amount of €4 million will be used for funding part of the design cost for the Main Terminal Building and Satellite Terminal Building apron modifications, as part of the Airport Expansion Program.
• (iii) The amount of € 65.75 million will be used for funding part of the cost for the development of a new apron in Athens International Airport (North-West Apron), as part of the Airport Expansion Program. In specific, this includes, among others, the funding of the development of remote parking stands, the necessary taxiways and taxilanes, a ramp service station, ground support equipment areas and new service bridges.

The allocation of the funds raised from the Share Capital Increase, as described above, will be carried out gradually within three (3) years from the date of certification of the Share Capital Increase by a Certified Auditor-Accountant, i.e. until 09.05.2028.

If the abovementioned projects require additional funding, the excess amount required will be covered through funds that will be raised from share capital increases of the Company over the

subsequent three years, that will take place in the context of the Dividend Reinvestment Program.

Until they are allocated, the funds raised will be placed in immediately liquid, low-risk investments.

It is noted that the expenses of the Share Capital Increase, amounting to approximately €148 thousand, were funded through Company's cash and were not deducted from the proceeds of the Share Capital Increase.

The New Shares will be delivered to their beneficiaries in dematerialized form by crediting their securities accounts in the D.S.S.

The exact date of crediting the New Shares to the beneficiaries' securities accounts and the date of commencement of their trading on the Athens Stock Exchange will be published in a subsequent announcement by the Company.

For further information, shareholders are kindly requested to contact the Company's Shareholders and Corporate Announcements Service Department (Administration Building 17, P.C. 19019, Spata, Attica, tel.: +30 210 35 35000 and email: ir@aia.gr).

Spata, 12 May 2025