Company: RTNTF
Filing Date: 2025-03-13
Form Type: 424B5
Source: 0001104659-25-023282
Chunk: 14

Company: RIO TINTO LTD
Filing Date: 2025-03-13
Form: 424B5
Chunk 14
---
0 Par Call Date, 2032 Par Call Date, 2035 Par Call Date and 2055 Par Call Date, the “Par Call Dates” and each a “Par Call Date”), the greater of (x) 100% of the principal amount of the notes to be redeemed and (y) as certified to the trustee by us or Rio Tinto, the sum of the present values of the Remaining Scheduled Payments discounted to the date of redemption on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus a spread of 20 basis points less interest accrued at the date of redemption or (ii) if such redemption occurs on or after the 2065 Par Call Date, 100% of the principal amount of the 2065 Notes to be redeemed, together, in either case, with accrued interest on the principal amount of the 2065 Notes to be redeemed to the date of redemption.

See “Description of Guaranteed Notes — Optional Redemption” beginning on page S-24 of this prospectus supplement for more information.

### Business Day Convention
Following, Unadjusted.

#### Day Count Fraction
30/360.

#### CUSIP
76720A AW6

#### ISIN
US76720AAW62

<div align='center'>S-10</div>

TABLE OF CONTENTS

#### Floating Rate Notes

#### Stated Maturity
March 14, 2028

#### Principal Amount of Notes Being Issued
U.S.$500,000,000

#### Issue Price
100.000%

#### Interest
Interest will accrue at a floating rate, reset quarterly on each Interest Payment Date (as defined herein), equal to Compounded SOFR, plus 0.840% (as described in “Description of the Guaranteed Notes”).

#### Interest Payment Dates
Interest will be payable quarterly in arrears on March 14, June 14, September 14 and December 14 of each year, commencing on June 14, 2025, and on the Stated Maturity Date.

#### Interest Reset Dates
Each Interest Payment Date.

#### Interest Determination Date
The second U.S. Government Securities Business Day preceding each Interest Payment Date.

#### Interest Period
The period from and including an Interest Payment Date (or, in the case of the initial Interest Period, the Settlement Date) to, but excluding, the immediately succeeding Interest Payment Date (such succeeding Interest Payment Date, the “Latter Interest Payment Date