Company: RTNTF
Filing Date: 2025-03-13
Form Type: 424B5
Source: 0001104659-25-023282
Chunk: 15

Company: RIO TINTO LTD
Filing Date: 2025-03-13
Form: 424B5
Chunk 15
---
”); provided that the final interest period for the Floating Rate Notes will be the period from and including the Interest Payment Date immediately preceding the maturity date or redemption date, as applicable, of the Floating Rate Notes to, but excluding, the maturity date, or redemption date.

#### Observation Period
The period from and including two U.S. Government Securities Business Days preceding the first date of such relevant Interest Period to but excluding two U.S. Government Securities Business Days preceding the Latter Interest Payment Date for such Interest Period; provided that the first Observation Period shall be the period from and including two U.S. Government Securities Business Days preceding the settlement date of the Floating Rate Notes to, but excluding, the two U.S. Government Securities Business Days preceding the first Interest Payment Date.

### Business Day Convention
Modified following, unadjusted.

#### Day Count Convention
Actual/360.

#### Calculation Agent
The Bank of New York Mellon.

#### CUSIP
76720A AY2

#### ISIN
**US76720AAY29

The following terms apply to the Notes:**

#### Issuer
Rio Tinto Finance (USA) plc

#### Guarantees
Full and unconditional guarantees of the principal, interest, premium, if any, and any other additional amounts payable in respect of the Notes are given by Rio Tinto plc and Rio Tinto Limited.

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TABLE OF CONTENTS

#### Ranking
The Notes and guarantees are not secured by any of our or Rio Tinto’s respective property or assets and will rank equally with all other unsecured and unsubordinated indebtedness. Since Rio Tinto plc and Rio Tinto Limited are holding companies and currently conduct their operations through subsidiaries, payments on the guarantees are effectively subordinated to the other liabilities of those subsidiaries.

#### Tax Redemption
In the event of various tax law changes that require us, Rio Tinto plc or Rio Tinto Limited to pay additional amounts and other limited circumstances, as described in the Base Prospectus on page 19 under “Description of Guaranteed Debt Securities — Special Situations — Payment of Additional Amounts”, we, Rio Tinto plc or Rio Tinto Limited may call all, but not less than all, of the Notes for redemption at 100% of their aggregate principal amount plus accrued interest to the date of redemption.

#### Form of Notes; Clearance and Settlement
We will issue the Notes in fully registered form. The Notes will be represented by one or more global securities registered in the name of a nominee of DTC