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6-K 1 form6k2026august.htm 6-K Document

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

Month of August 2026


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

99.1Stock Exchange announcement dated 3 August 2026 entitled ‘Issue of Shares’.

99.2Stock Exchange announcement dated 3August 2026 entitled ‘Voting Rights and Issued Capital’.

99.3Stock Exchange announcement dated 13 August 2026 entitled ‘Rio Tinto welcomes agreement to secure long-term future of Tomago Aluminium’.

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/ Matthew Whyte	By	/s/ Tim Paine
Name	Matthew Whyte	Name	Tim Paine
Title	Company Secretary	Title	Company Secretary

Date	1 September 2026	Date	1 September 2026

EX-99.1 2 ex1d03issueofshares.htm EX-99.1 ex1d03issueofshares

EXHIBIT 99.1

Notice to LSE

Issue of Shares

3 August 2026

In accordance with PRM 1.6.4R, Rio Tinto plc (the "Company") (LEI:213800YOEO5OQ72G2R82) confirms

that between 1 July 2026 and 31 July 2026, it has issued and allotted 12,006 ordinary shares of 10 pence

each (ISIN GB0007188757) ("Shares") to satisfy awards under the Rio Tinto plc Global Employee Share

Plan.

The Shares were admitted to trading on the London Stock Exchange's Main Market under the Company’s

existing block admission arrangements and rank equally with the Company’s existing ordinary shares.

Following this issuance of Shares, the Company confirms that as at 31 July 2026, the Company's issued

share capital comprised 1,256,050,704 Shares, each with one vote. 897,389 Shares are held in treasury.

Accordingly, the total number of voting rights in the Company is 1,255,153,315

Notice to LSE2 / #NUM_PAGES#

Contacts

Please direct all enquiries to media.enquiries@riotinto.com


Media Relations, United Kingdom Matthew Klar M +44 7796 630 637 David Outhwaite M +44 7787 597 493	Media Relations, Australia Matt Chambers M +61 433 525 739 Alyesha Anderson M +61 434 868 118 Rachel Pupazzoni M +61 438 875 469 Bruce Tobin  M +61 419 103 454	Media Relations, Canada Vanessa Damha M +1 514 715 2152 Malika Cherry M +1 418 592 7293 Media Relations, US & Latin America Jesse Riseborough M +1 202 394 9480
Investor Relations, United Kingdom Rachel Arellano M +44 7584 609 644 David Ovington M +44 7920 010 978 Laura Brooks M +44 7826 942 797 Weiwei Hu M +44 7825 907 230	Investor Relations, Australia Tom Gallop M +61 439 353 948 Eddie Gan-Och M +61 477 599 714
Rio Tinto plc 6 St James’s Square London SW1Y 4AD United Kingdom T +44 20 7781 2000 Registered in England No. 719885	Rio Tinto Limited Level 43, 120 Collins Street Melbourne 3000 Australia T +61 3 9283 3333 Registered in Australia ABN 96 004 458 404

This announcement is authorised for release to the market by Matthew Whyte, Rio Tinto’s Group Company

Secretary.

riotinto.com

EX-99.2 3 ex2d03totalvotingright.htm EX-99.2 ex2d03totalvotingright

Exhibit 99.2

Notice to LSE

Total Voting Rights and Issued Capital

3 August 2026

In accordance with the Financial Conduct Authority’s (‘FCA’) Disclosure Guidance and Transparency Rule

5.6.1R, Rio Tinto plc notifies the market that as of 31 July 2026:

1.Rio Tinto plc’s issued share capital comprised 1,256,050,704 ordinary shares of 10p each, each

with one vote.

2.897,389 ordinary shares of 10p each are held in treasury. These shares are not taken into

consideration in relation to the payment of dividends and voting at shareholder meetings.

Accordingly, the total number of voting rights in Rio Tinto plc is 1,255,153,315. This figure may be used by

shareholders (and others with notification obligations) as the denominator for the calculation by which they

will determine if they are required to notify their interest in, or a change to their interest in, Rio Tinto plc under

the FCA’s Disclosure Guidance and Transparency Rules.

Note:

As at the date of this announcement:

(a)Rio Tinto plc has also issued one Special Voting Share of 10p and one DLC Dividend Share of 10p in

connection with its dual listed companies (‘DLC’) merger with Rio Tinto Limited which was designed to

place the shareholders of both companies in substantially the same position as if they held shares in a

single enterprise owning all of the assets of both companies;

(b)the Special Voting Share facilitates joint voting by shareholders of Rio Tinto plc and Rio Tinto Limited on

joint electorate resolutions; and

(c)there are 371,821,214 publicly held Rio Tinto Limited shares in issue which do not form part of the share

capital of Rio Tinto plc.

LEI: 213800YOEO5OQ72G2R82

Notice to LSE2 / #NUM_PAGES#

Contacts

Please direct all enquiries to media.enquiries@riotinto.com


Media Relations, United Kingdom Matthew Klar M +44 7796 630 637 David Outhwaite M +44 7787 597 493	Media Relations, Australia Matt Chambers M +61 433 525 739 Alyesha Anderson M +61 434 868 118 Rachel Pupazzoni M +61 438 875 469 Bruce Tobin  M +61 419 103 454	Media Relations, Canada Vanessa Damha M +1 514 715 2152 Malika Cherry M +1 418 592 7293 Media Relations, US & Latin America Jesse Riseborough M +1 202 394 9480
Investor Relations, United Kingdom Rachel Arellano M +44 7584 609 644 David Ovington M +44 7920 010 978 Laura Brooks M +44 7826 942 797 Weiwei Hu M +44 7825 907 230	Investor Relations, Australia Tom Gallop M +61 439 353 948 Eddie Gan-Och M +61 477 599 714
Rio Tinto plc 6 St James’s Square London SW1Y 4AD United Kingdom T +44 20 7781 2000 Registered in England No. 719885	Rio Tinto Limited Level 43, 120 Collins Street Melbourne 3000 Australia T +61 3 9283 3333 Registered in Australia ABN 96 004 458 404

This announcement is authorised for release to the market by Matthew Whyte, Rio Tinto’s Group Company

Secretary.

riotinto.com

EX-99.3 4 ex3d13tacannoucement.htm EX-99.3 ex3d13tacannoucement

Notice to ASX/LSE Rio Tinto welcomes agreement to secure long-term future of Tomago Aluminium 13 August 2026 MELBOURNE, Australia -- Rio Tinto has welcomed the agreement announced today between Tomago Aluminium, the Australian Government and the New South Wales Government to secure the long-term future of Australia’s largest aluminium smelter. The arrangements provide long-term certainty for Tomago Aluminium, its workforce, its customers and the Hunter region, delivering reliable, internationally competitive power to the smelter until 2038. Under the agreement, Tomago Aluminium will enter into a 10-year power purchase agreement (PPA) for electricity supply to the smelter through to 2038, with the power to be supplied by 100 per cent renewable sources from 2033. The PPA will begin following the 31 December 2028 expiry of the current electricity contract. Tomago Aluminium will support the new agreement with A$1.1 billion (in real terms) of investment in the smelter between now and 2038, including A$100 million for decarbonisation initiatives. The smelter will continue to provide important demand response services to the New South Wales electricity system. Rio Tinto Aluminium & Lithium Chief Executive Jérôme Pécresse said: “This agreement secures Tomago Aluminium's long-term future, supporting Australian manufacturing, skilled jobs and the Hunter community, as well as providing security of supply to the smelter’s global customers. "It demonstrates what can be achieved when industry, governments and workers come together to strengthen Australia’s manufacturing sector. “I want to recognise the significant work of the Commonwealth and New South Wales Governments, unions and the Tomago workforce, as well as the many people across Tomago Aluminium, Rio Tinto and our joint venture partners who helped reach this outcome. “It means Australia keeps a critical piece of sovereign manufacturing capability, while helping Tomago Aluminium continue competitively producing the aluminium needed for the global energy transition.” This Tomago agreement comes after a March 2026 agreement between Rio Tinto, the Commonwealth Government and the Queensland Government to secure a long-term future for the Boyne aluminium smelter at Gladstone and ensure it also remains internationally cost-competitive beyond its current power contract. This means Australia's two largest aluminium smelters now have a secured pathway to long-term, cost- competitive, low-carbon power beyond the expiry of their current electricity contracts. It also strengthens one of the world’s largest integrated aluminium supply chains, spanning Rio Tinto’s bauxite mines, alumina refineries and aluminium smelters in eastern Australia. Once Tomago Aluminium’s electricity is supplied by 100% renewable sources, from 2033 under the PPA, it will reduce the smelter’s Scope 1 and 2 operating carbon emissions by 7.1 million tonnes per year. Tomago Aluminium, New South Wales’ biggest electricity user, will also continue to provide large-scale demand response capability under the arrangements, helping reduce electricity use during periods of system stress, improving system reliability and supporting the integration of more renewable energy. EXHIBIT 99.3

Notice to ASX/LSE Tomago Aluminium is an independently managed joint venture owned by Rio Tinto (51.55 per cent), Gove Aluminium Finance Ltd (36.05 per cent) and Norsk Hydro (12.4 per cent). Rio Tinto continues to work towards halving its Scope 1 and 2 emissions by 2030 from a 2018 baseline. Our ability to meet our 2030 target will remain dependent on the timely delivery of renewable projects and the outcomes of other commercial discussions. Additional information Founded in 1983, Tomago Aluminium Company is Australia’s largest aluminium smelter, producing up to 590,000 tonnes of aluminium a year – almost 40 per cent of Australia’s annual aluminium production. The smelter directly employs around 1,000 people, alongside 200 full-time equivalent contractors, and supports an estimated 5,000 indirect jobs. The smelter is located at Tomago, New South Wales, approximately 13 kilometres west of Newcastle. Tomago Aluminium’s existing electricity supply contract with AGL expires in December 2028.

Notice to ASX/LSE Contacts Please direct all enquiries to media.enquiries@riotinto.com Media Relations, Media Relations, Media Relations, United Kingdom Australia Canada Matthew Klar Matt Chambers Vanessa Damha M +44 7796 630 637 M +61 433 525 739 M +1 514 715 2152 David Outhwaite Alyesha Anderson Malika Cherry M +44 7787 597 493 M +61 434 868 118 M +1 418 592 7293 Rachel Pupazzoni M +61 438 875 469 Media Relations, US & Latin America Bruce Tobin M +61 419 103 454 Jesse Riseborough M +1 202 394 9480 Investor Relations, Investor Relations, United Kingdom Australia Rachel Arellano Tom Gallop M +44 7584 609 644 M +61 439 353 948 David Ovington Eddie Gan-Och M +44 7920 010 978 M +61 477 599 714 Laura Brooks M +44 7826 942 797 Weiwei Hu M +44 7825 907 230 Rio Tinto plc Rio Tinto Limited 6 St James’s Square Level 43, 120 Collins Street London SW1Y 4AD Melbourne 3000 United Kingdom Australia T +44 20 7781 2000 T +61 3 9283 3333 Registered in England Registered in Australia No. 719885 ABN 96 004 458 404 This announcement is authorised for release to the market by Matthew Whyte, Rio Tinto’s Group Company Secretary. riotinto.com