Rio Tinto (RTNTF) files Form 6-K on projects, capital and Yarwun move

Rhea-AI Filing Summary

Rio Tinto plc and Rio Tinto Limited submitted a Form 6-K summarising several November 2025 corporate announcements. The report lists media releases covering a transaction with the Canada Growth Fund to advance Canadian scandium production, an update on total voting rights and issued capital, and the start of operations by Simandou partners. It also notes a breakthrough by ELYSIS with a commercial-size inert anode cell in aluminium production, a new wind power agreement for the Kennecott operations, and a partnership with Calix to test low-emissions steelmaking in Western Australia while pausing the BioIron project. In addition, Rio Tinto discloses plans to reduce production at the Yarwun Alumina Refinery to extend the asset’s operational life.

Form 6-K: How Foreign Companies Report to the SEC →

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13A-16 OR 15D-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of November 2025

Commission file number: 001-10533			Commission file number: 001-34121
Rio Tinto plc			Rio Tinto Limited
			ABN 96 004 458 404
(Translation of registrant’s name into English)			(Translation of registrant’s name into English)
6 St. James’s Square			Level 43, 120 Collins Street
London, SW1Y 4AD, United Kingdom			Melbourne, Victoria 3000, Australia
(Address of principal executive offices)			(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F ☒ Form 40-F ☐

EXHIBITS

99.1Media release dated 1 November 2025 entitled ‘Rio Tinto and Canada Growth Fund announce transaction to advance Canadian production of scandium’.

99.2Stock Exchange announcement dated 3 November 2025 entitled ‘Total Voting Rights and Issued Capital’.

99.3Media release dated 11 November 2025 entitled ‘Simandou partners celebrate start of operations'.

99.4Media release dated 13 November 2025 entitled ‘ELYSIS achieves breakthrough with commercial-size cell: a first in aluminium production using the inert anode technology’.

99.5Media release dated 14 November 2025 entitled ‘Rio Tinto signs new wind power deal for Kennecott’.

99.6Media release dated 17 November 2025 entitled ‘Rio Tinto partners with Calix to test low-emissions steel making in Western Australia, pauses BioIron’.

99.7Media release dated 18 November 2025 entitled ‘Rio Tinto to reduce production at Yarwun Alumina Refinery to extend operational life’.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned, thereunto duly authorised.

Rio Tinto plc						Rio Tinto Limited
(Registrant)						(Registrant)
By			/s/ Andrew Hodges			By			/s/ Tim Paine
Name			Andrew Hodges			Name			Tim Paine
Title			Company Secretary			Title			Company Secretary
Date			1 December 2025			Date			1 December 2025