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 UNDER

THE SECURITIES EXCHANGE ACT OF 1934

December 19, 2022

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): ☐

EXHIBITS

99.1Stock Exchange announcement dated 19 December 2022 entitled ‘Kaisa Hietala to join Rio Tinto Board’

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.

Document

EXHIBIT 99.1

Notice to ASX/LSE

Kaisa Hietala to join Rio Tinto Board

Rio Tinto has appointed Kaisa Hietala as a non-executive director. Ms Hietala, a Finnish citizen, will join the Board on 1 March 2023.

Ms Hietala is an experienced executive with a strong track record of helping companies transform the challenges of environmental megatrends into business opportunities and growth. She began her career in upstream oil and gas exploration and, as Executive Vice President of Renewable Products at Neste, a petroleum refining and marketing company, she played a central role in its commercial transformation into the world’s largest and most profitable producer of renewable products.

An experienced non-executive director, Ms Hietala serves on the Boards of Exxon Mobil and Smurfit Kappa Group, a global packaging company, and is Chair of the Board at Tracegrow, a private Finnish sustainable fertilisers company. She is a member of the Supervisory Board of Oulu University and was formerly a Board member of Kemira Oy, a Finnish specialty chemicals company.

Rio Tinto Chairman Dominic Barton said “I am delighted to welcome Kaisa to the Rio Tinto Board. She brings a deep understanding of the resources industry, sustainability and renewables that will be invaluable as we work to ensure Rio Tinto thrives in a decarbonising world.

“As part of our continuing refresh of Board capabilities, we are progressing well with a number of other searches to identify non-executive directors with expertise in both mining and sustainability, and expect to announce further appointments in due course.”

Ms Hietala said “I am excited by the significant opportunity in front of Rio Tinto. The company demonstrates a real commitment to cultural change and is progressing with its long-term strategy to deliver value by supplying the materials needed for the transition to net zero. I look forward to working with my fellow Board members to support this ongoing transformation and strengthening of Rio Tinto.

Rio Tinto confirms that there are no further matters to be disclosed pursuant to Rule 9.6.13(1) - (6) of the Listing Rules of the UK Listing Authority.

LEI: 213800YOEO5OQ72G2R82

Classification: 3.1. Additional regulated information required to be disclosed under the laws of a Member State.

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

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