Antofagasta Results Presentation Deck

2021 financial highlights Record EBITDA and strong shareholder returns 1 Revenue $7.5 bn 个 46% Underlying earnings 142.5 c/share 个 161% Net cash costs $1.20/lb 个 5% Balance sheet Net cash $540m ↑ $622m EBITDA Margin calculated as EBITDA/Revenue. If Associates and JVS revenue is included EBITDA margin was 61.1% Antofagasta plc | 2021 Preliminary financial results EBITDA $4.8bn 个 77% ROCE 33% ↑ 17 ppt EBITDA margin¹ 65% ↑ 11 ppt Dividends per share 142.5 c/share 个 161% Pay-out ratio of 100% 12

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