The public limited company with the name "Water Supply and Sewerage Company SA " (hereinafter referred to as the "Company") announces to the investing public, pursuant to article 17 par. 1 of Regulation (EU) 596/2014 of the European Parliament and of the Council of 16 April 2014 and article 2 par. 2 letter (e) of the Decision of the Board of Directors of the Hellenic Capital Market Commission No. 3/347/12.07.2005, that Ms Marina Kairaktopoulou of Minas has assumed, pursuant to the Board of Directors' decisions No. 513/2024 and 094/2025 of EYATH S.A., the duties of Head of the Compliance Unit and Shareholders' Officer of the Company.

Ms Marina Kairaktopoulou holds a Master of Civil Engineering from the Aristotle University of Thessaloniki and an MBA.

Marina Kairaktopoulou

127 Egnatia Str, 54635, Thessaloniki

T: +30 2310 966 680

Ε: kairaktopoulou@eyath.gr