6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13A-16 OR 15D-16 OF

THE SECURITIES EXCHANGE ACT OF 1934

 Month of August 2021

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 7, 360 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 ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ☐

Indicate by check mark whether by furnishing the information contained in this Form, the registrant is also thereby furnishing the information to the Commission pursuant to

Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes ☐ No ☒

If "Yes" is marked, indicate below the file number assigned to the registrant in connection

with Rule 12g3-2(b): 82- ________

EXHIBIT 99

1.Stock Exchange announcement dated 2 August 2021 entitled ‘Total voting rights and issued capital’

2.Media release dated 2 August 2021 entitled ‘Rio Tinto and Komatsu partnering for zero-emission mining’

3.Stock Exchange announcement dated 6 August 2021 entitled ‘Appendix 3Y – Change of Director’s Interest Notice’

4.Stock Exchange announcement dated 9 August 2021 entitled ‘Shareholdings of person discharging managerial responsibility (PDMR) / Key Management Personnel (KMP)’

5.Stock Exchange announcement dated 24 August 2021 entitled ‘Rio Tinto resumes operations at Richards Bay Minerals’

6.Media release dated 24 August 2021 entitled ‘Rio Tinto and Sumitomo to assess hydrogen pilot plant at Gladstone’s Yarwun alumina refinery’

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/ Steve Allen	By	/s/ Steve Allen
Name	Steve Allen	Name	Steve Allen
Title	Company Secretary	Title	Joint Company Secretary
Date	1 September 2021	Date	1 September 2021

EX-99.1

EXHIBIT 99.1

Notice to ASX/LSE

Total voting rights and issued capital

2 August 2021

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 30 July 2021:

1.Rio Tinto plc’s issued share capital comprised 1,255,782,286 Ordinary shares of 10p each, each with one vote.

2.7,905,357 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 1,247,876,929. 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 371,216,214 publicly held Rio Tinto Limited shares in issue which do not form part of the share capital of Rio Tinto plc.

LEI: 213800YOEO5OQ72G2R82

Classification: 2.5 Total number of voting rights and capital disclosed under article 15 of the Transparency Directive

This announcement is authorised for release to the market by Steve Allen, Rio Tinto’s Group Company Secretary.

Steve Allen

Group Company Secretary

Rio Tinto plc

6 St James’s Square

London SW1Y 4AD

United Kingdom

T +44 20 7781 2000

Registered in England

No. 719885

EX-99.2

EXHIBIT 99.2

Media release

Rio Tinto and Komatsu partnering for zero-emission mining

02 August 2021

SHARE

TOKYO--(BUSINESS WIRE)-- Rio Tinto and Komatsu are partnering to fast-track the development and implementation of zero-emission mining haulage solutions, including haul trucks.

Rio Tinto will conduct a pre-production trial of the new equipment at a Rio Tinto site and has the option to purchase some of the first trucks from Komatsu once they are commercially viable.

Alf Barrios, Rio Tinto’s Chief Commercial Officer said: “Rio Tinto and Komatsu have a shared history of partnership on innovation going back to when we built the world’s largest Komatsu autonomous haulage fleet in 2008.”

“Our support of a trial, and the option to buy some of the first trucks from Komatsu, underscores our shared commitment to actively collaborate on product planning, development, testing and deployment of the next generation of zero-emission mining equipment and infrastructure as we look to decarbonise our business.”

Rio Tinto is also one of the first companies to join Komatsu’s newly launched Greenhouse Gas (GHG) Alliance which has an initial target of advancing Komatsu’s power agnostic truck concept for a haulage vehicle that can run on a variety of power sources including battery and hydrogen.

Max Moriyama, President, Mining Business Division of Komatsu Ltd said Komatsu was honoured to continue to partner with Rio Tinto.

“Rio Tinto and Komatsu both recognise the critical role zero-emission haul trucks play in meeting the Greenhouse Gas (GHG) emission reduction goals for the mining industry and the need to focus on developing practical haulage solutions.

“We are looking forward to advanced collaboration with them,” said Max.

Rio Tinto is also a founding patron of the Charge On Innovation Challenge, which is focused on solving the power distribution infrastructure needed to support zero-emission haul trucks.

“We know that addressing climate change effectively requires businesses, governments and society to work together. Our collaboration with Komatsu recognises the role zero-emission haul trucks will play in meeting the emission reduction goals of not only Rio Tinto, but the entire mining industry,” said Alf.

About Rio Tinto

Rio Tinto produces high-quality iron ore, copper, aluminium, and minerals that have an essential role in enabling the low-carbon transition.

We have publicly acknowledged the reality of climate change for over two decades and have reduced our emissions footprint by over 30 percent in the decade to 2020.

We have set 2030 targets to reduce our absolute emissions by 15% and our emissions intensity by 30% relative to our 2018 baseline. These targets are consistent with a 45% reduction in absolute emissions, relative to 2010 levels, and the Intergovernmental Panel on Climate Change (IPCC) pathways to 1.5°C. They are supported by our commitment to spend approximately $1 billion on emissions reduction initiatives over the first five years of the ten-year target period. In 2020, we set new Scope 3 emissions reduction goals to guide our partnership approach across our value chain.

Read more about our approach to climate change:www.riotinto.com/invest/reports/climate-change-report

About Komatsu

Komatsu develops and supplies technologies, equipment and services for the construction, mining, forklift, industrial and forestry markets. For a century, the company has been creating value for its customers through manufacturing and technology innovation, partnering with others to empower a sustainable future where people, business and the planet thrive together. Frontline industries worldwide use Komatsu solutions to develop modern infrastructure, extract fundamental minerals, maintain forests and create consumer products. The company's global service and distributor networks support customer operations to enhance safety and productivity while optimizing performance.

View source version on businesswire.com: https://www.businesswire.com/news/home/20210802005282/en/

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

Media Relations, UK Illtud Harri M +44 7920 503 600 David Outhwaite M +44 7787 597 493 Media Relations, Americas Matthew Klar T +1 514 608 4429 Investor Relations, UK Menno Sanderse M: +44 7825 195 178 David Ovington M +44 7920 010 978 Clare Peever M +44 7788 967 877	Media Relations, Australia Jonathan Rose M +61 447 028 913 Matt Chambers M +61 433 525 739 Jesse Riseborough M +61 436 653 412 Investor Relations, Australia Natalie Worley M +61 409 210 462 Amar Jambaa M +61 472 865 948
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 7, 360 Collins Street Melbourne 3000 Australia T +61 3 9283 3333 Registered in Australia ABN 96 004 458 404

riotinto.com

EX-99.3

Appendix 3Y Change of Director’s Interest Notice + See chapter 19 for defined terms. 01/01/2011 Appendix 3Y Page 1 Rule 3.19A.2 Appendix 3Y Change of Director’s Interest Notice Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public. Introduced 30/09/01 Amended 01/01/11 Name of entity Rio Tinto Limited ABN 96 004 458 404 We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act. Name of Director Simon McKEON Date of last notice 2 January 2019 Part 1 - Change of director’s relevant interests in securities In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust Note: In the case of a company, interests which come within paragraph (i) of the definition of “notifiable interest of a director” should be disclosed in this part. Direct or indirect interest Indirect Nature of indirect interest (including registered holder) Note: Provide details of the circumstances giving rise to the relevant interest. Interest in securities held by CVM and Co Pty Limited, a body corporate controlled by Mr McKeon. Date of change 6 August 2021 No. of securities held prior to change Nil Class Ordinary shares Number acquired 5,000 Rio Tinto Limited ordinary shares (“Shares”). Number disposed Nil Value/Consideration Note: If consideration is non-cash, provide details and estimated valuation $130.00 per Share No. of securities held after change 5,000 Shares Nature of change Example: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy- back Acquisition of 5,000 Shares by way of off-market transfer. EXHIBIT 99.3

Appendix 3Y Change of Director’s Interest Notice + See chapter 19 for defined terms. Appendix 3Y Page 2 01/01/2011 Direct or indirect interest Indirect Nature of indirect interest (including registered holder) Note: Provide details of the circumstances giving rise to the relevant interest. Interest in securities held by Thompson McKeon Pty Ltd, a body corporate controlled by Mr McKeon. Date of change 6 August 2021 No. of securities held prior to change 5,000 Shares Class Ordinary shares Number acquired Nil Number disposed 5,000 Shares Value/Consideration Note: If consideration is non-cash, provide details and estimated valuation $130.00 per Share No. of securities held after change Nil Nature of change Example: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy- back Sale of 5,000 Shares by way of off-market transfer. Direct or indirect interest Direct Nature of indirect interest (including registered holder) Note: Provide details of the circumstances giving rise to the relevant interest. N/A (Registered holder: Mr Simon McKeon <Est Late N H McKeon A/c>) Date of change N/A No. of securities held prior to change 5,000 Shares Class Ordinary shares Number acquired Nil Number disposed Nil Value/Consideration Note: If consideration is non-cash, provide details and estimated valuation N/A No. of securities held after change 5,000 Shares Nature of change Example: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy- back N/A

Appendix 3Y Change of Director’s Interest Notice + See chapter 19 for defined terms. 01/01/2011 Appendix 3Y Page 3 Part 2 – Change of director’s interests in contracts Note: In the case of a company, interests which come within paragraph (ii) of the definition of “notifiable interest of a director” should be disclosed in this part. Detail of contract N/A Nature of interest N/A Name of registered holder (if issued securities) N/A Date of change N/A No. and class of securities to which interest related prior to change Note: Details are only required for a contract in relation to which the interest has changed N/A Interest acquired N/A Interest disposed N/A Value/Consideration Note: If consideration is non-cash, provide details and an estimated valuation N/A Interest after change N/A Part 3 – +Closed period Were the interests in the securities or contracts detailed above traded during a +closed period where prior written clearance was required? No If so, was prior written clearance provided to allow the trade to proceed during this period? N/A If prior written clearance was provided, on what date was this provided? N/A

EX-99.4

Notice to LSE 9 August 2021 Shareholdings of person discharging managerial responsibility (PDMR) / Key Management Personnel (KMP) As part of its dual listed company structure, Rio Tinto notifies dealings in Rio Tinto plc and Rio Tinto Limited securities by PDMR / KMPs to both the Australian Securities Exchange (ASX) and the London Stock Exchange (LSE). On 6 August 2021 the Company was notified that Simon McKeon, a Non-Executive Director, had transferred 5,000 Rio Tinto Limited shares of AUD1.00 each from Thompson McKeon Pty Limited to CVM and Co Pty Limited, both persons closely associated. The transfer took place on 6 August 2021. EXHIBIT 99.4

Notice to ASX/LSE Page 2 of 2 Contacts Please direct all enquiries to media.enquiries@riotinto.com Media Relations, UK Illtud Harri M +44 7920 503 600 David Outhwaite M +44 7787 597 493 Media Relations, Americas Matthew Klar T +1 514 608 4429 Investor Relations, UK Menno Sanderse M: +44 7825 195 178 David Ovington M +44 7920 010 978 Clare Peever M +44 7788 967 877 Media Relations, Australia Jonathan Rose M +61 447 028 913 Matt Chambers M +61 433 525 739 Jesse Riseborough M +61 436 653 412 Investor Relations, Australia Natalie Worley M +61 409 210 462 Amar Jambaa M +61 472 865 948 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 7, 360 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 Steve Allen, Rio Tinto’s Group Company Secretary. riotinto.com

EX-99.5

Notice to ASX/LSE 24 August 2021 Rio Tinto resumes operations at Richards Bay Minerals Rio Tinto has today commenced the process of restarting operations at Richards Bay Minerals (RBM) in South Africa. This follows a stabilisation of the security situation around the mine, supported by the national and provincial government, as well as substantive engagement with host communities and their traditional authorities. Rio Tinto chief executive Minerals Sinead Kaufman said “The safety and security of our people has been our priority throughout and we recognise the collaboration and constructive dialogue we have had with all stakeholders to get us into a position where we can restart operations and resume contributing to the host communities, KwaZulu-Natal and South Africa. I also acknowledge the resilience and dedication shown by all our people at RBM over the past weeks.” Operations will be ramping up to capacity as soon as possible. The overall impact of the suspension of operations, including the shutdown of furnace number 4 as announced on 21 July 2021, is still to be assessed. At this time, the force majeure declared on customer contracts remains in place. EXHIBIT 99.5

Notice to ASX/LSE Page 2 of 2 Contacts Please direct all enquiries to media.enquiries@riotinto.com Media Relations, UK Illtud Harri M +44 7920 503 600 David Outhwaite M +44 7787 597 493 Media Relations, Americas Matthew Klar T +1 514 608 4429 Investor Relations, UK Menno Sanderse M: +44 7825 195 178 David Ovington M +44 7920 010 978 Clare Peever M +44 7788 967 877 Media Relations, Australia Jonathan Rose M +61 447 028 913 Matt Chambers M +61 433 525 739 Jesse Riseborough M +61 436 653 412 Investor Relations, Australia Natalie Worley M +61 409 210 462 Amar Jambaa M +61 472 865 948 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 7, 360 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 Steve Allen, Rio Tinto’s Group Company Secretary. riotinto.com

EX-99.6

EXHIBIT 99.6

Media release

Rio Tinto and Sumitomo to assess hydrogen pilot plant at Gladstone’s Yarwun alumina refinery

24 August 2021

SHARE

MELBOURNE, Australia--(BUSINESS WIRE)-- Rio Tinto and Sumitomo Corporation today announced a partnership to study the construction of a hydrogen pilot plant at Rio Tinto’s Yarwun alumina refinery in Gladstone and explore the potential use of hydrogen at the refinery.

The two global companies have signed a letter of intent that focuses on Yarwun as the location for a Gladstone hydrogen plant that Sumitomo has been studying. If the project proceeds, the pilot plant would produce hydrogen for the recently announced Gladstone Hydrogen Ecosystem.

The study supports the efforts of Australian, Queensland and local governments to establish Gladstone as a clean hydrogen hub of the future.

Rio Tinto Australia Chief Executive Kellie Parker said “Rio Tinto has a long relationship with Sumitomo and we are delighted to partner with them to explore the possibilities of hydrogen, not only for our own refinery, but for Sumitomo to supply industry more broadly in Gladstone.

“Reducing the carbon intensity of our alumina production will be key to meeting our 2030 and 2050 climate targets. There is clearly more work to be done, but partnerships and projects like this are an important part of helping us get there.”

Sumitomo Corporation’s Energy Innovation Initiative Director Hajime Mori said “We are excited about working together with Rio Tinto as our long-term partner to develop this hydrogen project in Gladstone and working toward our company’s vision of achieving carbon neutrality by 2050.

“We believe the pilot plant will play a significant role in establishing the Gladstone Hydrogen Ecosystem.

“Sumitomo has commenced the Design Study and Preliminary Master Planning to build the Gladstone hydrogen ecosystem and we will continue to work towards future hydrogen exports from Gladstone.

Deputy Premier and Minister for State Development Steven Miles said Gladstone is an industrial powerhouse and this partnership presents a great opportunity for the region and for Queensland.

“This is only the beginning of a wave of international collaborations that will lead to new industries and new jobs underpinned by the supply of renewable energy,” Mr Miles said.

“With the Palaszczuk Government’s strong commitment to creating more jobs in emerging industries, we will work to keep Queensland at the forefront of renewable hydrogen and the opportunities that come with it.”

Minister for Energy, Renewables and Hydrogen Mick de Brenni said the Palaszczuk Government was developing Queensland’s Energy Plan to reinforce our platform for international partnerships focused on new technology and a stronger Australia.

“This is a plan to create a renewable energy ecosystem that will power our low-carbon ambitions to transform industry, create thousands of jobs for Queenslanders, and decarbonise not only Queensland but the nation.”

Minister for Regional Development and Manufacturing and Minister for Water Glenn Butcher said the partnership would provide important economic opportunities for the entire Central Queensland region.

“Gladstone’s world-class deep water port, water security through Awoonga Dam, and industry attraction via the local State Development Area have set Gladstone up to become the hydrogen capital of Australia, providing massive employment and supply chain opportunities both locally and in the Central Queensland region.”

The Sumitomo partnership complements a recently announced feasibility study into using hydrogen to replace natural gas in the alumina refining process at Yarwun and provides the potential for larger-scale implementation if the studies are successful.

About Rio Tinto:

Rio Tinto produces high-quality iron ore, copper, aluminium, and minerals that have an essential role in enabling the low-carbon transition. We have publicly acknowledged the reality of climate change for over two decades and have reduced our emissions footprint by over 30 percent in the decade to 2020. We have set 2030 targets to reduce our absolute emissions by 15% and our emissions intensity by 30% relative to our 2018 baseline. These targets are consistent with a 45% reduction in absolute emissions, relative to 2010 levels, and the Intergovernmental Panel on Climate Change (IPCC) pathways to 1.5°C. They are supported by our commitment to spend approximately $1 billion on emissions reduction initiatives over the first five years of the ten-year target period. In 2020, we set new Scope 3 emissions reduction goals to guide our partnership approach across our value chain. Read more about our approach to climate change: www.riotinto.com/invest/reports/climate-change-report

About Sumitomo Corporation:

Sumitomo Corporation (“SC”) is a leading Fortune 500 global trading and business investment company with 135 locations (Japan: 22, Overseas: 113) in 66 countries and regions. The entire SC Group consists of more than 900 companies. SC conducts commodity transactions in all industries utilising worldwide networks, provides customers with financing, serves as an organiser and a coordinator for various projects, and invests in companies to promote greater growth potential. SC’s core business areas include six business units: Metal Products; Transportation & Construction Systems; Infrastructure; Media & Digital; Living Related & Real Estate; and Mineral Resources, Energy, Chemical & Electronics, and one initiative: Energy Innovation.

Sumitomo Corporation established a new business organisation entitled the Energy Innovation Initiative (EII) in April 2021 which will carry this Gladstone project. In order to greatly contribute to the achievement of our long-term goals toward climate change mitigation, "Carbon neutralisation in 2050" and "Realisation of a sustainable energy cycle", we will accelerate our efforts for the materialisation of a hydrogen society by promoting hydrogen related businesses.

View source version on businesswire.com: https://www.businesswire.com/news/home/20210823005690/en/

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

Media Relations, UK Illtud Harri M +44 7920 503 600 David Outhwaite M +44 7787 597 493 Media Relations, Americas Matthew Klar T +1 514 608 4429 Investor Relations, UK Menno Sanderse M: +44 7825 195 178 David Ovington M +44 7920 010 978 Clare Peever M +44 7788 967 877	Media Relations, Australia Jonathan Rose M +61 447 028 913 Matt Chambers M +61 433 525 739 Jesse Riseborough M +61 436 653 412 Investor Relations, Australia Natalie Worley M +61 409 210 462 Amar Jambaa M +61 472 865 948
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 7, 360 Collins Street Melbourne 3000 Australia T +61 3 9283 3333 Registered in Australia ABN 96 004 458 404

riotinto.com