Publication of Supplementary Prospectus

Notice to LSE

Publication of Supplementary Prospectus

31 March 2026

The following document has been approved by the United Kingdom Financial Conduct Authority on 31 March 2026 and is available for viewing:

Supplementary Prospectus dated 31 March 2026 (the "Supplementary Prospectus") relating to the U.S.$10,000,000,000 Euro Medium Term Note Programme of Rio Tinto Finance (USA) Limited (ABN 84 062 129 551), Rio Tinto Finance (USA) plc and Rio Tinto Finance (USA) Inc. as issuers and unconditionally and irrevocably guaranteed by Rio Tinto plc and Rio Tinto Limited (ABN 96 004 458 404) as guarantors.

The Supplementary Prospectus should be read and construed in conjunction with the base prospectus dated 31 October 2025 (the "Base Prospectus", which definition includes the base prospectus and all information incorporated by reference therein).

To view the full document, please paste the following URL into the address bar of your browser.

http://www.rns-pdf.londonstockexchange.com/rns/8797Y_1-2026-3-31.pdf

A copy of the Supplementary Prospectus has also been submitted to the National Storage Mechanism and will shortly be available for inspection at https://data.fca.org.uk/#/nsm/nationalstoragemechanism.

For further information, please contact:

Rio Tinto plc

6 St James's Square

London SW1Y 4AD

Telephone: +44 20 7781 2000

Website: https://www.riotinto.com/

DISCLAIMER - INTENDED ADDRESSEES

Please note that the information contained in the Supplementary Prospectus may be addressed to and/or targeted at persons who are residents of particular countries only and is not intended for use and should not be relied upon by any person outside these countries. Prior to relying on the information contained in the Supplementary Prospectus you must ascertain from the Supplementary Prospectus whether or not you are part of the intended addressees of the information contained therein.

Your right to access this service is conditional upon complying with the above requirement.

Legal Entity Identifiers

1. Rio Tinto plc (LEI: 213800YOEO5OQ72G2R82)

2. Rio Tinto Limited (ABN 96 004 458 404) (LEI: 529900X2VMAQT2PE0V24)

3. Rio Tinto Finance (USA) plc (LEI: 2138006TSNBEUA761G16)

4. Rio Tinto Finance (USA) Limited: (LEI: 213800RX94ZKEZXPKH58)

5. Rio Tinto Finance (USA) Inc: (LEI: 875500ZLU9FC9N2OUE63)

Contacts

Please direct all enquiries to [email protected]

This announcement is authorised for release to the market by Andy Hodges, Rio Tinto's Group Company Secretary.

riotinto.com