Antofagasta Results Presentation Deck

Reliable and responsible copper producer With embedded growth portfolio Portfolio projects Chile 3rd Region Zaldívar Primary sulphides Twin Metals Chile 2nd Region Exploration 2030+ Cachorro Los Pelambres Expansion Phase 2 Centinela 2nd Concentrator Phase 2 Centinela 2nd Concentrator Phase 1 Development 2025 Antofagasta plc | 2021 Preliminary financial results 120 ktpa Cu 50 ktpa Cu 35 ktpa Cu 15 ktpa Cu Los Pelambres Expansion Phase 1 Zaldívar Chloride Leach Esperanza Sur Pit Production Construction Sized to 50 ktpa for illustrative purpose only 2022 Potential to grow up to 900ktpa by 2026 24

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