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Form SD RIO TINTO PLC

April 8, 2026 11:23 AM

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549


FORM SD
Specialized Disclosure Report







Commission file number: 001-10533
Commission file number: 001-34121
Rio Tinto plc
Rio Tinto Limited
ABN 96 004 458 404
(Exact name of the registrant as specified in its charter)
(Exact name of the registrant as specified in its charter)
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)





Julie Parent, T: 514-848-8519
(Name and telephone number, including area code, of the person to contact in connection with this report)


Check the appropriate box to indicate the rule pursuant to which this form is being filed, and provide the period to which the information in this form applies:

_X_ Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, 2025.

___ Rule 13q-1 under the Securities Exchange Act (17 CFR 240.13q-1) for the reporting period from January 1 to December 31, 2025.




Section 1 - Conflict Minerals Disclosure Item 1.01 Conflict Minerals Disclosure
This Specialized Disclosure Form (“Form SD”) of Rio Tinto plc and Rio Tinto Limited (hereafter “Rio Tinto”) is being filed in accordance with Rule 13p-1 under the Securities Act of 1934 (“Rule”) for the reporting period ending December 31, 2025. The Rule imposes disclosure requirements of certain information when a company manufactures or contracts to manufacture products for which the Conflict Minerals (defined below) are necessary to the functionality or production of those products. The term “Conflict Minerals” means cassiterite, columbite-tantalite (coltan), gold, wolframite and their derivatives which are limited to tantalum, tin and tungsten.

Rio Tinto finds, mines, processes and supplies metals and minerals. Our products include aluminum, copper, iron ore, and industrial minerals (borates, titanium dioxide, iron ore pellets and concentrate, and salt), as well as diamonds, scandium, lithium, metallic powders, gold, silver, sulfuric acid, and molybdenum.

Rio Tinto undertook an assessment of all of its products and identified one subsidiary of Rio Tinto that is within the scope of the Rule: Kennecott Utah Copper LLC (“Kennecott”).

Based on a reasonable country of origin inquiry (“RCOI”), Rio Tinto has no reason to believe that the Conflict Minerals contained in its products originated in the Democratic Republic of the Congo or an adjoining country (“Covered Countries”).

Kennecott
Kennecott is based in the United States of America and produces gold bars. Kennecott’s gold production is independently assured and assessed as conforming with the London Bullion Market Association (LBMA) Responsible Gold Guidance. As part of Kennecott’s raw materials purchasing procedure to produce gold bars, its chain custody management system requires that all purchased copper concentrate have a certificate of origin. Kennecott has used this information to complete its RCOI and has determined that gold used in Kennecott’s gold bars did not originate in the Covered Countries. Kennecott is listed on the Responsible Minerals Initiative Conflict Free Gold Refiners List (CID000969) as compliant with the relevant Responsible Minerals Assurance Process.


In accordance with Rule, the Form SD is posted on Rio Tinto’s web site at https://www.riotinto.com/en/invest/reports.



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 plcRio Tinto Limited
(Registrant)(Registrant)
By/s/ Andrew Hodges        By/s/ Tim Paine             
NameAndrew HodgesNameTim Paine
TitleCompany SecretaryTitleCompany Secretary
Date 8 April 2026Date 8 April 2026


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