Company: RTNTF
Filing Date: 2025-03-10
Form Type: 424B2
Source: 0001104659-25-022024
Chunk: 15

Company: RIO TINTO LTD
Filing Date: 2025-03-10
Form: 424B2
Chunk 15
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 Tinto plc, Rio Tinto Limited, Rio Tinto Finance plc, and the banks and financial institutions named therein (the “Bridge Loan Facility”) in order to finance the acquisition of Arcadium Lithium plc by Rio Tinto BM Subsidiary Limited, an indirect wholly owned subsidiary of Rio Tinto plc. Approximately US$ in aggregate principal amount of indebtedness, which bears interest at an average annual rate of %, which was incurred pursuant to the Bridge Loan Facility, is intended to be repaid with the proceeds of issuance of the Notes. See “Use of Proceeds” and “Underwriting”.

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#### Risk Factors
You should carefully consider all of the information in this prospectus supplement and in the Base Prospectus (including the documents incorporated by reference in this Prospectus) and, in particular, the risks described under “Risk Factors” beginning on page S-8 of this prospectus supplement before deciding to invest in the Notes and “Item 3D Risk Factors” beginning on page 91 of our Annual Report on Form 20-F for the year ended December 31, 2024.

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### RISK FACTORS
An investment in the Notes involves risks. Risks may materialize individually, simultaneously or in combination. There may be additional risks unknown to the Rio Tinto Group and other risks, currently believed to be immaterial, which could turn out to be material. The risk factors outlined below, in addition to those incorporated by reference info this prospectus supplement, including the section entitled “Item 3D Risk Factors” beginning on page 91 of our Annual Report on Form 20-F for the year ended December 31, 2024, omit the management detail on how each risk is managed and mitigated. These risk factors, and those incorporated herein, are not intended to be exhaustive and there may be other risks and uncertainties that are not mentioned below that could impact the Group’s future performance or ability to meet published targets. The risks and uncertainties should be considered in connection with any forward-looking statements in this prospectus supplement and the cautionary statement on page S-4 of this prospectus supplement. Prior to making a decision about investing, you should carefully consider, among other matters, these principal risks and uncertainties, as well as those incorporated by reference in other filings Rio Tinto may make from time to time with the SEC, including in the section