Antofagasta Investor Conference Presentation Deck

2021 operational and financial highlights Reliable performance and record EBITDA 1 Operations Mines and plants consistently performing at or above design capacity Copper production at 721,500 tonnes and net cash costs of $1.20/lb Main challenges: COVID-19 and drought in central Chile EBITDA $4.8bn 个 77% EBITDA Margin¹ 65% ↑ 11 ppt ROCE 33% ↑ 17 ppt EBITDA Margin calculated as EBITDA/Revenue. If Associates and JVs revenue is included EBITDA margin was 61.1% Antofagasta plc | 2022 BMO Global Metals & Mining Conference Balance sheet Net cash $540m ↑ $622m Dividends per share 142.5 c/share 个 161% Pay-out ratio of 100% 5

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