Antofagasta Investor Day

RESILIENT BUSINESS WITH HIGH-QUALITY GROWTH PORTFOLIO Portfolio projects Chile 3rd Region Zaldívar Primary sulphides Twin Metals Chile 2nd Region Exploration 2030+ Los Pelambres Expansion Phase 2 Centinela 2nd Concentrator Phase 2 Centinela 2nd Concentrator Phase 1 Study - Environmental permits 2025 Sustainable long term production 120 ktpa Cu 50 ktpa Cu 35 ktpa Cu 15 ktpa Cu Los Pelambres Expansion Phase 1 Zaldívar Chloride Leach Esperanza Sur Pit Construction 2022 Sized to 50 ktpa for illustrative purposes only Production 10

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