Antofagasta Results Presentation Deck

Production and cash costs Cost pressure offset by by-products credits 1 734.0 kt FY 2020 $1.14/lb 0.42 (24.1) costs FY 2020 Grades $1.56/lb Net cash By-product Pre-credit credits FY 2020 Cost and Competitiveness Programme 12.7 Throughput 0.10 Copper production -12.5 kt (-2%) 0.10 (3.7) FX & Input prices inflation Recovery Cash costs +$0.06/lb (+5%) 0.05 Lower grades & recoveries Work-in-progress & inventories (0.04) 2.9 CCP savings Antofagasta plc | 2021 Preliminary financial results 0.02 Others (0.3) ROM/Others $1.79/lb 0.59 721.5 kt Pre-credit By-product FY 2021 credits FY 2021 $1.20/lb Net cash costs FY 2021 13

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