Southern Copper — Oct 28, 2025 release

Molybdenum production registered an increase of 8.3% in 3Q25 compared to 3Q24, reflecting higher production at our La Caridad (+24.2%) and Toquepala (+10.0%) mines, which was partially offset by lower production at our Buenavista (-8.7%) and Cuajone (-2.4%) mines. On a YTD basis, production grew for zinc (+50.5%), silver (+15.3%) and molybdenum (+6.7%). · Dividends: On October 23, 2025, the Board of Directors authorized a quarterly cash dividend of $0.90 per share of common stock and a stock dividend of 0.0085 shares of common stock per share of common stock, payable on November 28, 2025, to shareholders of record at the close of business on November 12, 2025. Mr. German Larrea, Chairman of the Board , commenting on the Company´s progress and current circumstances, said: “We are very pleased with our third-quarter results, where our performance delivered new Company records for net sales, adjusted EBITDA and net income. These milestones are a testament to the strength of our strategy, execution and commitment to sustainable growth. This strong performance was primarily driven by a rise in by-product production and improved metal prices across all our products. Zinc production rose 46.3%, mainly on the back of notable production at our Buenavista zinc concentrator. Silver and molybdenum output grew 16.4% and 8.3%, respectively. The combination of higher production volumes and better copper and by-product prices enabled us to achieve a cash cost of $0.42 per pound of copper in 3Q25, one of the industry’s lowest. We remain firmly committed to enhancing productivity and cost efficiency, driven by a strategy anchored in discipline and focused on achieving a lon