Southern Copper — Jul 28, 2025 release

Its copper oxide mineralization contains estimated proven and probable reserves of 317 million tonnes of ore with an average copper grade of 0.249%. We anticipate that El Pilar will operate as a conventional open-pit mine with an annual production capacity of 36,000 tonnes of copper cathodes. This operation will use highly cost efficient and environmentally friendly SX-EW technology. ​ SCC has several projects in its Mexican pipeline that may boost organic growth if they are found to be of value for both stakeholders and the communities in which we operate. These projects are Angangueo, Chalchihuites and the Empalme Smelter, which could bolster our position as a fully integrated copper producer. ​ ​ ​ 2Q25 www.southerncoppercorp.com Page 4 of 13 ​ ​ ​ ​ ​ ​ ​ ​ ​ SECOND QUARTER AND SIX MONTHS 2025 RESULTS SOUTHERN COPPER ​ ​ ​ ​ ​ Environmental, Social & Corporate Governance (ESG) Practices ​ SCC continued to strengthen its focus on sustainability and transparency. For the first time, SCC ´ s Sustainable Development Report was verified by an independent third party. This verification complies with the standards of environmental, social, and governance (ESG) rating agencies and bolsters investor confidence by providing detailed information on our performance across 15 material sustainability topics. The most noteworthy results include a 24% reduction in the lost time injury frequency rate since 2023; 39% of our electricity consumption was sourced from renewable energy