Antofagasta Results Presentation Deck

12 EBITDA and margin Resilient margins 1 65% $4,836m 2021 FY EBITDA² (987) Sales volumes and TC/RCS (644) Realised prices (260) Mining costs (15) ppt $(1,906)m (10) Exploration & evaluation (17) Associates & JVs Calculated as EBITDA/Revenue. If Associates and JVs revenue is included the EBITDA margin was 46.7% in 2022 and 61.1% in 2021 Results of continuing operations only. Includes EBITDA from Associates and JVs Antofagasta plc | 2022 Full Year Results 1 Corporate costs & non operating expenses 11 Transport division 1 50% ANTOFAGASTA PLC $2,930m 2022 FY EBITDA² 14

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