Director Declaration - External Appointment

Director declaration - external appointment

In accordance with Listing Rule 6.4.9(2), Antofagasta plc (the "Company") announces that Ignacio Bustamante, a Non-Executive Director of the Company, has been appointed as a director of Pan American Silver Corp., a publicly quoted company, with effect from 30 April 2026.

Investors - London                                                                                 Media - London

Rosario Orchard                      rorchard@antofagasta.co.uk            Sara Powell             antofagasta@fticonsulting.com

Robert Simmons                     rsimmons@antofagasta.co.uk          Ben Brewerton

Telephone                               +44 20 7808 0988                                 Nick Hennis

                                                                                                       Telephone               +44 20 3727 1000

                                                                                                                Media - Santiago

                                                                                                                Pablo Orozco           porozco@aminerals.cl

                                                                                                                Carolina Pica           cpica@aminerals.cl

Telephone               +56 2 2798 7000

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