THESSALONIKI WATER AND SEWAGE COMPANY SA

ANNOUNCEMENT OF DIVIDEND PAY DATE USE 2024

DIVIDEND DISTRIBUTION FROM THE PROFITS

OF THE FISCAL YEAR 2024

EYATH SA, in the scope of providing reliable information to the investing public and its shareholders, in accordance with article 4.1.3.4 of the Athens Stock Exchange Regulation, announces the following:

The Annual Ordinary General Meeting of the Shareholders of EYATH S.A., held on May 22nd, 2025, decided, inter alia, to distribute a dividend of ¤0.0550 per share for the fiscal year 2024, which, after the application of withholding tax of 5% (i.e. ¤0.00275 per share), according to L. 4646/2019 (article 24, par. 1) and circular Ε.2012/2020 of the Independent Authority for Public Revenue (IAPR), amounts to ¤0.05225 per share.

The ex-dividend date was set at Tuesday, July 1st, 2025. From that date, the Company's shares will be traded on the Athens Exchange without the right to receive a dividend.

The beneficiaries of the dividend are the shareholders registered in the records of the Dematerialised Securities System (DSS) on Wednesday, July 2nd, 2025 (record date).

The payment of the dividend shall commence on Tuesday, July 8th, 2025, by the paying bank Eurobank as follows:

1. Through the Participants of the beneficiaries in the DSS (Banks and Brokerage Companies) in accordance with the applicable rules of operation of ATHEXCSD (Greek Central Securities Depository SA) and their relevant decisions.

2. Especially in the case of payment of a dividend to heirs of deceased beneficiaries whose securities are held in the Special Account of their Share in the DSS, under the supervision of ATHEXCSD, the process of payment of the dividend will be carried out after the completion of the legalisation of the heirs, through the network of branches of Eurobank S.A. Bank.

In the case of foreign dividend beneficiaries (natural persons or legal entities) who are residents in signatory countries, the tax deducted varies according to the provisions of the respective agreement for the avoidance of double taxation and in any case cannot exceed 5%.

Dividends for the year 2024 that are not collected by December 31st 2030, will be forfeited in favor of the Greek State.

It should be noted that EYATH S.A. does not possess own shares.

For further information, the Shareholders may contact the Company's Shareholder & Corporate Announcement Office, tel. +30 2310 966680, email investors@eyath.gr .

Additionally, they may also refer to Eurobank, Eurobank-Ergasias Services and Holdings S.A, Panagouli & Siniosoglou PO 14234, N. Ionia, telephone number +30 214 4046400.