Announcement of Disposal of own shares

Athens, Greece – 28.12.2023 – Mytilineos S.A.  (MYTILINEOS), announces that, according to the resolution of the Annual General Meeting dated 15.06.2021 and the terms of the resolution of the Board of Directors dated 22.12.2021, issued pursuant to the former resolution of the Annual General Meeting, on 27.12.2023 259,287 in total of own ordinary shares of an aggregate value €9,427,675.32, resulting from the closing price of €36.36 of the previous working date as provided, were awarded to the total of 13 beneficiaries as detailed below:

• Chrisafis Evangelos - Vice Chairman and Executive Director of the BoD for Regulatory & Strategic Energy & Infrastructure Issues | Chairman, METKA ATE
• Spyrakos Fotios - Chief Administration Officer & Head of CEO's office
• Gardelinos Panagiotis - CΕΟ, M Concessions
• Stefanidis Dimitrios - Chief Executive Director, Metallurgy
• Benroubi Dinos - CEO, METKA ATE
• Kanellopoulos Panagiotis - Executive Director, M Integrated Supply & Trading
• Papapetrou Nikolaos - Executive Director, M Renewables
• Selekos Petros - Group General Counsel
• Kalafatas Ioannis - Chief Executive Director, Energy
• Karaindros Elenos - Chief Strategy and M&A Officer | Chairman, M Concessions
• Gavalas Christos - Executive BoD Member | Chief Treasury & IR Officer
• Papadopoulos Dimitrios - Executive BoD Member & Executive Director, Corporate Governance & Sustainable Development
• Bouzali Paraskevi - Chief Corporate Affairs & Communication Officer

in the context of executing the 3^rd phase of the approved by virtue of the aforementioned resolutions free distribution of shares to  executive members of the board of directors of MYTILINEOS (excluding the Chairman & CEO) or/and members of the executive management team who are key management personnel or/and higher officers of MYTILINEOS.

The said own shares were acquired from 01.06.2020 to 22.12.2023, in the context of MYTILINEOS’ own share buyback program that was approved by the Extraordinary General Meeting of shareholders on 27.03.2020, 23.03.2022 and 10.04.2023.

Following this disposal, MYTILINEOS held in aggregate 4,562,221 own shares, percentage 3.1928% of the total number of shares issued by it.

This announcement is issued pursuant to the provisions of the article 15 of law 3556/2007, resolution No 1/434/03.07.2007 of the Hellenic Capital Market Commission’s Board of Directors, as in force and in conjunction with the Circular No 33/2007 of the Hellenic Capital Markets Commission’s Board of Directors, the Regulation (EU) 596/2014 and Delegated Regulation (EU) 2016/1052