Antofagasta Regulatory News (ANTO)

NEWS RELEASE, 14 MARCH 2023

CHANGES TO BOARD COMMITTEES

In accordance with Listing Rule 9.6.11 and the Board's succession plan, the Company announces that with effect from today:

· Vivianne Blanlot has rotated off the Nomination and Governance and Remuneration and Talent Management Committees, and joined the Projects Committee;

· Francisca Castro has joined the Nomination and Governance Committee; and

· Eugenia Parot has joined the Remuneration and Talent Management Committee.

The members of the Committees are now as follows:

Nomination and Governance Committee: Jean-Paul Luksic (Chair), Tony Jensen and Francisca Castro;

Audit and Risk Committee: Tony Jensen (Chair), Jorge Bande and Francisca Castro;

Remuneration and Talent Management Committee: Francisca Castro (Chair), Michael Anglin, Tony Jensen and Eugenia Parot;

Projects Committee: Michael Anglin (Chair), Jorge Bande, Ramón Jara, Eugenia Parot and Vivianne Blanlot; and

Sustainability and Stakeholder Management Committee: Vivianne Blanlot (Chair), Juan Claro, Jorge Bande, Ramón Jara, Michael Anglin and Eugenia Parot.

Vivianne Blanlot will have served on the Board for nine years on 27 March 2023.