Antofagasta Results Presentation Deck

Robust EBITDA converts into dividends Policy unchanged, record of strong returns to shareholders c/lb and % 55% 3.00 1.25 2017 c/share 67% 50.9 2017 47% 2.81 1.29 2018 Net cash costs 66% 33.7 2018 Minimum pay-out 35% 49% 2.75 1.22 2019 Realised prices 35% 17.8 53% 2.98 2019 From excess cash 1.14 2020 Group EBITDA Margin 100% 54.7 2020 65% 4.37 Antofagasta plc | 2021 Preliminary financial results 1.20 2021 142.5 100% Pay-out ratio (%) 2021 EBITDA Margin 2021 65% Average 5-year pay-out ratio 73% 17

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