Ternium's Steel Market and Financial Performance

Corporate Structure Techint Group: 65% 71% 63% Ternium Ternium México 29% Ternium Argentina³ ,4% Tenaris: 11% Ternium (treasury shares): 2% Public: 21% Subsidiaries Joint operations Non-consolidated companies 100% Las Encinas 37% Other 50% Peña Colorada 17% Usiminas Nippon Steel Corp: 19% TenarisConfab: 3% CEU: 3% 50% ArcelorMittal 100% Economic participation Ternium Brasil4 Other: 55% Direct Indirect² Total 51% 49% Tenigal Ternium Mexico 71% 18% 89% Nippon Steel Corp Ternium Argentina³ 62% 62% 100% Ternium Colombia Ternium Brasil 100% 100% Usiminas¹ 17% 2% 19% 100% Ternium del Atlántico Tenigal 51% 51% Ternium Colombia 100% 100% 100% Ternium USA TX Int. Guatemala 100% 100% TX USA 100% 100% 100% Ternium Int. Guatemala Las Encinas 71% 18% 89% Peña Colorada 36% 9% 44% 48% 30% Techgen Tecpetrol 1 Participation based on total shares distributed 22% 2 Net of non-controlling interest in TX Argentina 50% 3 Formerly known as Siderar Exiros 50% Tenaris 4 Formerly known as CSA Ternium I May 2023 30 30

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