RIO TINTO LTD

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 20-F

(Mark One)

or

or

or

Julie Parent, T:514-848-8519, E: julie.parent@riotinto.com

(Name, Telephone, E-mail and/or Facsimile number and Address of Company Contact Person)

Securities registered or to be registered pursuant to Section 12(b) of the Act:

Securities registered or to be registered pursuant to Section 12(g) of the Act:

Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act:

Indicate the number of outstanding shares of each of the issuer’s classes of capital or common stock as of the close of the period

covered by the annual report:

Indicate by check mark if the registrants are well-known seasoned issuers, as defined in rule 405 of the Securities Act.

If this report is an annual or transition report, indicate by check mark if the registrants are not required to file reports pursuant to

Section 13 or 15(d) of the Securities Exchange Act of 1934.

Yes☐ No ☒

Note – Checking the box above will not relieve any registrant required to file reports pursuant to Section 13 or 15(d) of the Securities

Exchange Act of 1934 from their obligations under those Sections.

Indicate by check mark whether the registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities

Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrants were required to file such

reports), and (2) have been subject to such filing requirements for the past 90 days:

Indicate by check mark whether the registrants have submitted electronically every

Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during

the preceding 12 months (or for such shorter period that the registrants were required to submit such files).

Indicate by check mark whether the registrants are large accelerated filers, accelerated filers, non-accelerated filers, or emerging growth companies. See definition

of “large accelerated filer”, “accelerated filer” and “emerging growth company” and in Rule 12b-2 of the Exchange Act.:

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark

if the registrants have elected not to use the extended transition period for complying with any new or revised

financial accounting standards* provided pursuant to Section 13(a) of the Exchange Act.☐

*The term “new or revised financial accounting standard” refers to any update issued by the Financial Accounting Standards Board to its Accounting Standards Codification after April 5, 2012.

Indicate by check mark whether the registrants have filed a report on and attestation to their management’s assessment of the

effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C.

7262(b)) by the registered public accounting firm that prepared or issued their audit report.☒

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the

registrants included in the filing reflect the correction of an error to previously issued financial statements.☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrants' executive officers during the relevant recovery period pursuant to §240.10D-1(b).☐

Indicate by check mark which basis of accounting the registrants have used to prepare the financial statements included in this filing:

US GAAP☐ International Financial Reporting Standards as issued by the International Accounting Standards Board☒

Other ☐

If “Other” has been checked in response to the previous question, indicate by check mark which financial statement item the

registrants have elected to follow:

Item 17☐ Item 18 ☐

If this is an annual report, indicate by check mark whether the registrants are shell companies (as defined in Rule 12b-2 of the Exchange

Act).

Yes☐ No☒

(APPLICABLE ONLY TO ISSUERS INVOLVED IN BANKRUPTCY PROCEEDINGS DURING THE PAST FIVE YEARS)

Indicate by check mark whether the registrants have filed all documents and reports required to be filed by Sections 12, 13 or

15(d) of the Securities Exchange Act of 1934 subsequent to the distribution of securities under a plan confirmed by a court.

Yes☐ No☐

Annual Report on Form 20-F 2025

Other information contained within Rio Tinto’s Annual Report on Form 20-F 2025 (Form 20-F) is not included in this Form 20-F unless

specifically identified above and is furnished to the SEC for information only.

Many of our operations are located on land and waters

that have belonged to Indigenous and land-connected

Peoples for thousands of years. We respect their ongoing

deep connection to, and their vast knowledge of, the land,

water and environment. We pay our respects to Elders,

both past and present, and acknowledge the important

role Indigenous and land-connected Peoples play within

communities and our business.

Contents

On the cover: Bauxite stockpiles at Weipa Operations, Australia.

Our 2025 reporting suite

Scan the QR code or visit riotinto.com/reports

References to information on websites in the Form 20-F are

included as an aid to their location and such information is not

incorporated in, and does not form part of, this Form 20-F. We have

included any website as an inactive textual reference.

The independent assurance report related to sustainability is not

included within this Form 20-F and therefore any references to

this report are not incorporated in, and do not form part of this