Antofagasta Results Presentation Deck

2021 guidance Antucoya & Zaldívar Centinela 725 120 248 Los Pelambres 358 2018 Copper production (kt) 770 130 277 363 2019 734 127 247 360 2020 Revised Guidance 710-740 361 60 132 169 2021 H1 ANTOFAGASTA PLC Copper production 710-740,000 tonnes Bottom end of range based on assumption that there is minimal precipitation for the rest of 2021 Net cash costs $1.25/lb Assuming by-product prices and FX rate remain at similar levels to H1 Capital expenditure $1.6 billion Opportunities to accelerate execution of selected capital expenditure programmes under review 6

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