20 MAY 2024

Announcement of Acquisition of own shares

Athens, Greece – May 20, 2024 - MYTILINEOS S.A. (MYTILINEOS) announces that, according to the resolution of its Extraordinary Shareholders’ Meeting dated 27.03.2024, on 17.5.2024, acquired through the Athens Exchange 15,000 own shares at a weighted average price €38.5667 per share, of an aggregate value €578,500.00. Such acquisitions have been effected through the Athens Exchange member name EUROXX SECURITIES S.A..

Following this acquisition, MYTILINEOS holds in aggregate 4,862,569 own shares, percentage 3.4030% of the total number of shares issued by it.

This announcement is issued pursuant to Regulation (EU) 596/2014 and Delegated Regulation (EU) 2016/1052.