Antofagasta PLC — AGM Information 2021

May 12, 2021

Company number: 1627889

PUBLIC COMPANY LIMITED BY SHARES

RESOLUTION

OF

ANTOFAGASTA PLC

(the "Company")

At the separate meeting of the holders of the 5 per cent. cumulative preference shares of £1 each in the capital of the Company, duly convened and held at Cleveland House, 33 King Street, St James's, London SW1Y 6RJ on the 12th day of May 2021 at 2.15 p.m. (or as soon thereafter as the separate meeting of the holders of the ordinary shares of 5p each in the capital of the Company had been concluded) the following resolution was duly passed as a special resolution:

SPECIAL RESOLUTION

"THAT, this separate meeting of the holders of the 5 per cent. cumulative preference shares of £1 each in the capital of the Company (the "Preference Shares") hereby sanctions and consents to the passing and implementation of Resolution 22 set out in the notice dated 24 March 2021 convening the Annual General Meeting of the Company for 12 May 2021, and sanctions and consents to any variation or abrogation of the rights attaching to the Preference Shares which is or may be effected by or involved in the passing or implementation of the said resolution."

Julian Anderson

Company Secretary