Final Dividend Payable

NEWS RELEASE, 1 MAY 2020

FINAL DIVIDEND PAYABLE

DIVIDEND NO. 49 - AMOUNT PAYABLE IN STERLING AND EURO

Further to the preliminary results announcement on 17 March 2020, the Sterling equivalent of the final dividend of 23.4 US cents will be 18.6841 pence per ordinary share, based on an exchange rate of £1 = US$1.2524, and the Euro equivalent will be 21.5212 Euro cents per ordinary share, based on an exchange rate of €1 = US$1.0873.

Payment of the dividend is scheduled for 22 May 2020.

Investors - London Media - London

Andrew Lindsay alindsay@antofagasta.co.uk Carole Cable antofagasta@brunswickgroup.com

Telephone +44 20 7808 0988 Telephone +44 20 7404 5959

Andres Vergara avergara@antofagasta.co.uk Will Medvei antofagasta@brunswickgroup.com

Telephone +44 20 7808 0988 Telephone +44 20 7404 5959

Media - Santiago

Pablo Orozco porozco@aminerals.cl

Paola Raffo praffo.van@aminerals.cl

Telephone +56 2 2798 7000