Antofagasta Results Presentation Deck

EBITDA and margin Underpinned by higher commodity prices 2 $ million and %² 53% $2,739m 17 2020 FY₁ Sales volumes EBITDA and TC/RCS 2,303 Realised prices (277) Mining costs + 11.3 ppt +$2,097m (18) Exploration & evaluation (11) Antofagasta plc | 2021 Preliminary financial results Corporate costs & non operating expenses 77 Associates & JVs 1 Results of continuing operations only and includes EBITDA from Associates and JVs 2 Calculated as EBITDA/Group revenue. If Associates and JVs' revenue is included the EBITDA margin was 61.1% in 2021 and 50.3% in 2020 6 Transport division 65% $4,836m 2021 FY₁ EBITDA 1 14

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