Company: RTNTF
Filing Date: 2025-03-10
Form Type: 424B2
Source: 0001104659-25-022024
Chunk: 74

Company: RIO TINTO LTD
Filing Date: 2025-03-10
Form: 424B2
Chunk 74
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 next interest reset date. The calculation agent’s determination of any interest rate, and its calculation of the amount of interest for any interest period, will be final and binding in the absence of manifest error. All percentages resulting from any calculation relating to a note will be rounded upward or downward, as appropriate, to the next higher or lower one hundred- thousandth of a percentage point. All amounts used in or resulting from any calculation will be rounded upward or downward, as appropriate, to the nearest cent. The calculation agent for a particular series will be named in the applicable prospectus supplement.

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#### Day count fraction
. We will compute interest on fixed rate debt securities on the basis of a 360-day year of twelve 30-day months. In the case of floating rate debt securities, the calculation agent will calculate the amount of interest that has accrued during each interest period — i.e., the period from and including the original issue date, or the last date to which interest has been paid or made available for payment, to, but excluding, the payment date. For each such interest period, the calculation agent will calculate the amount of accrued interest by multiplying the face amount of the floating rate debt security by the applicable interest rate and an accrued interest factor for the interest period. This factor will be determined in accordance with the day count convention specified in the applicable prospectus supplement. If “Actual/360 (ISDA)”, “Act/360 (ISDA)” or “A/360 (ISDA)” is specified, the factor will be equal to the number of days in the interest period divided by 360.

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#### Regular record dates for interest
. With respect to each interest payment date, the regular record date for interest will be the date that is 15 calendar days prior to such interest payment date, whether or not such date is a business day, unless otherwise specified in the applicable prospectus supplement.

#### Interest rates
In addition to debt securities that bear interest at fixed rates, we may, from time to time, issue floating rate debt securities that bear interest at rates based on other interest rates as may be described in the applicable prospectus supplement.

#### Guarantees
Both Rio Tinto plc and Rio Tinto Limited will fully and unconditionally guarantee the payment of the principal of, premium, if any, and interest on the debt securities, including any additional amounts which may be payable in respect of the debt securities, as described under “— Special Situations — Payment of Additional Amounts ”. Rio Tinto plc and Rio T