Company: RTNTF
Filing Date: 2025-03-13
Form Type: 424B5
Source: 0001104659-25-023282
Chunk: 42

Company: RIO TINTO LTD
Filing Date: 2025-03-13
Form: 424B5
Chunk 42
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) if such redemption occurs on or after the 2065 Par Call Date, 100% of the principal amount of the Notes to be redeemed, together, in either case, with accrued interest on the principal amount of the Notes to be redeemed to the date of redemption.

<div align='center'>S-29</div>

TABLE OF CONTENTS

“Treasury Rate” means, with respect to any redemption date, the yield determined in accordance with the following:

The Treasury Rate shall be determined by us, Rio Tinto or any other designated agent of us or Rio Tinto after 4:15 p.m., (New York City time) (or after such time as yields on U.S. government securities are posted daily by the Board of Governors of the Federal Reserve System), on the third business day preceding the redemption date based upon the yield or yields for the most recent day that appear after such time on such day in the most recent statistical release published by the Board of Governors of the Federal Reserve System designated as “Selected Interest Rates (Daily) — H.15” (or any successor designation or publication) (“H.15”) under the caption “U.S. government securities — Treasury constant maturities — Nominal” (or any successor caption or heading) (“H.15 TCM”). In determining the Treasury Rate, we, Rio Tinto or any other designated agent shall select, as applicable:

(1)

the yield for the Treasury constant maturity on H.15 exactly equal to the period from the redemption date to the relevant Par Call Date (and in the case of the 2027 Notes, the maturity date of the 2027 Notes) (the “Remaining Life”); or

(2)

if there is no such Treasury constant maturity on H.15 exactly equal to the Remaining Life, the two yields — one yield corresponding to the Treasury constant maturity on H.15 immediately shorter than and one yield corresponding to the Treasury constant maturity on H.15 immediately longer than the Remaining Life — and shall interpolate to the relevant Par Call Date (and in the case of the 2027 Notes, the maturity date of the 2027 Notes) on a straight-line basis (using the actual number of days) using such yields and rounding the result to three decimal places; or

(3)

if there is no such Treasury constant maturity on H.15 shorter than or longer than the Remaining Life, the yield for the single Treasury constant maturity on H.15 closest to the Remaining Life.

For purposes of the foregoing