Southern Copper — Jan 27, 2026 release

The current estimated capital budget is $1.8 billion. As of the end of 2025, the project was 24% complete and reported commitments for $0.8 billion. At current copper prices, Tia Maria could generate US$20.2 billion in exports and US$4.6 billion in taxes and royalties over its first 20 years of operation. The project has already created 3,589 jobs, with a strong focus on local hiring. When operations begin in 2027, Tia Maria will provide 764 direct jobs and nearly 5,900 indirect jobs, demonstrating our commitment to sustainable growth and long-term regional development. ​ Looking ahead to 2026, we will continue to advance a disciplined investment strategy focused on growth by strengthening our project pipeline to achieve our long-term objective of producing 1.6 million tons of copper by 2033.” ​ ​ ​ ​ 4Q25       www.southerncoppercorp.com Page 2 of 11 ​ ​ ​ ​ ​ FOURTH QUARTER AND YEAR 2025 RESULTS SOUTHERN COPPER ​ ​ ​ ​ Key Financial Data ​ ​ ​ Fourth Quarter ​ Twelve Months ​ ​ 2025 ​ 2024 ​ Variance ​ 2025 ​ 2024 ​ Variance ​ ​ ​ ​ ​ ​ $ ​ % ​ ​ ​ ​ ​ $ ​ % ​ ​ (in millions except per share amount and %s) Sales   ​ ​ ​ $ 3,869.8   ​ ​ ​ $ 2,784.3   ​ ​ ​ $ 1,085.5   ​ ​ ​ ​   ​ 39.0%   ​ ​ ​ $ 13,420.0   ​ ​ ​ $ 11,433.4   ​ ​ ​ $ 1,986.6   ​ ​ ​   ​ 17.4%   Cost of sales ​ ​ 1,471.5 ​ ​ 1,211.9 ​ ​ 259.6 ​ ​ 21.4% ​ ​ 5,359.2 ​ ​ 4,841.4 ​ ​ 517.8 ​ ​ 10.7%   Operating income ​ ​ 2,110.4 ​ ​ 1,307.3 ​ ​ 803.1 ​ ​ 61.4