Southern Copper — Jul 28, 2025 release

” ​ ​ ​ 2Q25 www.southerncoppercorp.com Page 2 of 13 ​ ​ ​ ​ ​ ​ ​ ​ ​ SECOND QUARTER AND SIX MONTHS 2025 RESULTS SOUTHERN COPPER ​ ​ ​ ​ Key Financial Data ​ ​ Second Quarter ​ First Six Months ​ ​ 2025 ​ 2024 ​ Variance ​ 2025 2024 ​ Variance ​ ​ ​ ​ $ % ​ ​ $ % ​ ​ (in millions except per share amount and %s) Sales      $ 3,051.0      $ 3,118.3      $ (67.3)      (2.2)%      $ 6,172.9      $ 5,718.1      $ 454.8      8.0% Cost of sales ​   1,211.7 ​   1,248.9 ​   (37.2) ​ (3.0)% ​   2,530.9 ​   2,406.5 ​   124.4 ​ 5.2% Operating income ​   1,587.0 ​   1,607.3 ​   (20.3) ​ (1.3) % ​   3,122.5 ​   2,797.0 ​   325.5 ​ 11.6% Net income ​ $ 973.4 ​ $ 950.2 ​ $ 23.2 ​ 2.4% ​ $ 1,919.4 ​ $ 1,686.2 ​ $ 233.2 ​ 13.8% Net income margin ​   31.9% ​   30.5% ​   1.4pp ​ 4.6% ​   31.1% ​   29.5% ​   1.6pp ​ 5.4% Adjusted EBITDA ​   1,790.9 ​   1,797.0 ​   (6.1) ​ (0.3)% ​   3,536.5 ​   3,214.7 ​   321.8 ​ 10.0% Adjusted EBITDA margin ​   58.7% ​   57.6% ​   1.1pp ​ 1.9% ​   57.3% ​   56.2% ​   1.1pp ​ 2.0% Income per share ​ $ 1.22 ​ $ 1.22 ​ $ – ​ 0.0% ​ $ 2.41 ​ $ 2.17 ​ $ 0.24 ​ 11.1% Capital investments ​   235.7 ​   331.8 ​   (96.1) ​ (29.0)% ​   553.5 ​   545.6 ​   7.9 ​ 1.4% ​ Capital Investments ​ Our current capital investment program for this decade exceeds $15 billion and includes investments in projects in Peru and Mexico. ​ Peruvian Projects ​ Our investments in Peruvian projects that are being built or for which basic or detail engineering is being conducted could surpass $10.3 billion in the next decade. ​ The openness of the Peruvian government and institutions to private investment; the strong support of local communities; and respect for the rule of law underpin our aggressive investment program.  With the support and assistance of Peruvian authorities, the Company is moving forward to secure the administrative permits and licenses that are required prior to investment. The projects ’ construction and subsequent operating phases will generate new poles of development; create significant job opportunities; and drive growth in tax revenues at both, national and regional levels. ​ Tia Maria - Arequipa: This greenfield project in Arequipa, Peru will use state-of-the- art SX-EW technology that meets the highest international environmental standards and has the capacity to produce 120,000 tonnes of SX- EW copper cathodes per year. ​ Tia Maria will generate significant revenues for the Arequipa region from day one of its operations. At current