FRN Variable Rate Fix

LONDON, June 17, 2026–(BUSINESS WIRE)–

As Agent Bank, please be advised of the following rate determined on: 6/15/2026

Issue

¦ Westpac Banking Corporation Series 1595 GBP 250,000,000 FRN due March 2027

ISIN Number

¦ XS3323666373

ISIN Reference

¦ 332366637

Issue Nomin GBP

¦ 250000000

Period

¦ 3/20/2026 to 6/22/2026

Payment Date 6/22/2026

Number of Days

¦ 94

Rate

¦ 4.1472

Denomination GBP

¦ 100000

¦ 250000000

¦

Amount Payable per Denomination

¦ 1068.05

¦ 2670125

¦

Bank of New York

Rate Fix Desk

Telephone

¦ 44 1202 689580

Corporate Trust Services

Facsimile

¦ 44 1202 689601

As Agent Bank, please be advised of the following rate determined on: 6/15/2026

¦ Westpac Banking Corporation Series 1595 GBP 250,000,000 FRN due March 2027

Amount Payable per Denomination

View source version on businesswire.com: https://www.businesswire.com/news/home/20260617071305/en/

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