Antofagasta Results Presentation Deck

Capital allocation drives decision making Operating Cash Flow Sustaining Capex & Mine Development Committed Dividends (35% pay-out) Growth Capex Strong Balance Sheet Excess Cash Dividend ↓ Debt Repayment Copper Price ● Balance Sheet ● DECISION FACTORS ● Economic outlook Stress test forecasts at various copper prices Free Cash Flow Capex • Future free cash flow generation Cash buffer ● ANTOFAGASTA PLC Debt structure • Strong liquidity Upcoming capital expenditure Approved and under study projects 2021 interim dividend of $233 million representing 35% of net earnings Any excess cash will be distributed as part of the final dividend 16

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