PUBLICATION OF 2025 ANNUAL REPORTING SUITE AND 2026 NOTICE OF ANNUAL GENERAL MEETING

Antofagasta plc (“Antofagasta” or the “Company”) has today published the following documents: the 2025 Annual Report and Accounts, the 2025 Sustainability Report, the 2026 Notice of Annual General Meeting and the Company’s 2025 Modern Slavery Statement.

Annual Report and Accounts and 2026 Notice of Annual General Meeting

In compliance with LR 6.4.1, the Company has submitted the following documents to the Financial Conduct Authority by uploading them to the National Storage Mechanism:

• 2025 Annual Report and Accounts
• 2026 Notice of Annual General Meeting
• Form of Proxy for Ordinary Shareholders for Annual General Meeting
• Form of Proxy for Preference Shareholders for Annual General Meeting
• Letter to Shareholders regarding Electronic Communications

These documents will shortly be available for inspection in unedited full text at the National Storage Mechanism at https://data.fca.org.uk/#/nsm/nationalstoragemechanism.

The 2025 Annual Report and Accounts and 2026 Notice of Annual General Meeting are also available to view on the Group's website at www.antofagasta.co.uk.

This announcement is made in accordance with DTR 6.3.5R(1A).

Arrangements for 2026 Annual General Meeting

The Annual General Meeting will be held in-person at Church House Westminster, Dean’s Yard, London SW1P 3NZ at 10:00am on Thursday 07 May 2026. The formal notice of the Annual General Meeting and resolutions to be proposed are set out in the Notice of Annual General Meeting.

2025 Sustainability Report and Databook

The 2025 Sustainability Report and associated Databook, have also been published today and are available to view on the Company’s website at www.antofagasta.co.uk.

Modern Slavery Statement

In compliance with section 54 of the UK Modern Slavery Act 2015, the Company’s Modern Slavery Statement has been published today and is available to view on the Company's website at www.antofagasta.co.uk.

Investors – London

Rosario Orchard rorchard@antofagasta.co.uk 

Robert Simmons rsimmons@antofagasta.co.uk

Telephone +44 20 7808 0988  

Media – London

Sara Powell antofagasta@fticonsulting.com

Ben Brewerton

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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