Antofagasta Results Presentation Deck

COVID-19 situation in Chile Some local lockdowns still in place Health system has responded well High levels of testing and tracking Successful vaccination campaign with more than 25% of population vaccinated I ■ ■ I COVID-19 response and recovery Focus on protecting our people and local communities ■ Highest rate of vaccination in the world¹ 1222 Impact on operations All sites have kept operating throughout the pandemic I Limited impact on production and supply chain Mine development and maintenance resumed as operations have adjusted to the new working conditions Growth projects restarted, integrating new COVID-19 health protocols into the revised project execution plans 1 Source: Ourworldindata.org. 7-day moving average per 100 people. 13 March 2021 BOLE Antofagasta's response Focus on protecting our people and local communities ■ ANTOFAGASTA PLC ■ Dedicated air and road transport for shift changes Remote working Launched a $6 million community fund to: Provide medical equipment and supplies, and financial support to local suppliers Sanitise public spaces KST 6

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