Tranche Update on Outokumpu Oyj's Equity Buyback Plan announced on December 4, 2023.

Outokumpu Oyj is one of the world's leading manufacturers of stainless steels. Net sales break down by activity as follows: - sales of generic steel products (95.3%): rolled products, plates, flat steels, etc. The group also develops ferrochrome production activity. Net sales break down by geographical area between Europe (71.6%) and America (28.4%); - ferrochrome production (3%); - other (1.7%): primarily holdings in industrial groups. Net sales are distributed geographically as follows: Finland (3.5%), Europe (61.2%), North America (28.7%), Asia/Pacific (5.3%) and other (1.3%).