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

Company: RIO TINTO LTD
Filing Date: 2025-03-13
Form: 424B5
Chunk 25
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 are calculated or determined (in consultation with the calculation agent).

<div align='center'>S-18</div>

TABLE OF CONTENTS

This Benchmark Replacement may result in interest payments that are lower than, or that do not otherwise correlate over time with, the payments that would have been made on the Notes if SOFR was available in its current form. Additionally, if SOFR is no longer calculated or administered and no Benchmark Replacement is calculated (including because the same costs and risks that may lead to the discontinuation or unavailability of SOFR make the Benchmark Replacement impossible or impracticable to determine), the floating interest rate on the Floating Rate Notes may accrue at the same rate as the immediately preceding Interest Period (or, in the case of the initial Interest Period, the initial rate of interest which would have been applicable to such Floating Rate Notes for the first Interest Period had such Floating Rate Notes been outstanding for a period equal in duration to the scheduled first Interest Period but ending on (and excluding) the Issue Date), effectively converting the Floating Rate Notes into fixed rate instruments. Due to the uncertainty concerning the availability of benchmark replacements, the relevant fallback provisions may not operate as intended at the relevant time. Any of the foregoing may have an adverse effect on the value of the Floating Rate Notes.

The rate of interest on the Floating Rate Notes may be determined by reference to a Benchmark Replacement even if SOFR continues to be published.

If a Benchmark Transition Event and related Benchmark Replacement Date occur with respect to SOFR, the rate of interest on the Floating Rate Notes will thereafter be determined by reference to the Benchmark Replacement. A Benchmark Transition Event includes, among other things, a public statement or publication of information by the regulatory supervisor for the administrator of SOFR announcing that SOFR is no longer representative. The rate of interest on the Floating Rate Notes may therefore cease to be determined by reference to SOFR, and instead be determined by reference to the Benchmark Replacement, even if SOFR continues to be published. Such rate may be lower than SOFR for so long as SOFR continues to be published, and the value of and return on the Notes may be adversely affected.

Any Benchmark Replacement will likely be a relatively new market index that may be altered or discontinued.

The Benchmark Transition Provisions specify a “waterfall” of alternative rates that may become the Benchmark Replacement. These alternative rates are uncertain and no market convention currently exists, or may ever exist, for their determination. For example, the ISDA Fallback Rate, which is the rate referenced in the ISDA