NEWS RELEASE, 22 JUNE 2021

DIRECTOR CHANGE AND CHANGES TO BOARD COMMITTEES

In accordance with Listing Rule 9.6.11 Antofagasta plc (the "Company") announces that Ollie Oliveira, a Non-Executive Director of the Company since 2011, has agreed to step down from the Antofagasta plc board with effect from 31 July 2021 given his tenure as an independent Director now exceeds nine years. He will therefore step down as a Director of the Company, Senior Independent Director, Chair of the Audit and Risk and Projects Committees and member of the Nomination and Governance Committee with effect from the same date.

The Company's Chairman, Jean-Paul Luksic, said; "I would like to thank Ollie for the significant contribution he has made to the Board and the Company as a Director, Senior Independent Director, Audit and Risk and Projects Committee Chair and for the wise counsel he has contributed to the Board over many years."

Mr. Oliveira has not and will not receive any loss of office payments, nor will he be paid any further remuneration for his service as a director of the Company, other than that accrued up to 31 July 2021.

In accordance with Listing Rule 9.6.11 and the Boards' succession plan, the Company announces that following a review of Board roles and the composition of the Board Committees, Tony Jensen will assume the role of Senior Independent Director and the Committees shall be comprised as follows, with effect from 1 August 2021:

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

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

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

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

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

Tony Jensen therefore assumes the role of Chair of the Audit and Risk Committee, joins the Nomination and Governance Committee and rotates off the Sustainability and Stakeholder Management Committee.

Michael Anglin therefore assumes the role of Chair of the Projects Committee and joins the Sustainability and Stakeholder Management Committee.

Eugenia Parot joins the Sustainability and Stakeholder Management and Projects Committees.