LONDON–(BUSINESS WIRE)– As Agent Bank, please be advised of the following rate determined on: 9/16/2026 Issue ¦ Westpac Banking Corporation – Series 1507 USD 30,000,000 FRN due March 2028 ISIN Number ¦ XS2601462893 ISIN Reference ¦ 260146289 Issue Nomin USD ¦ 30000000 Period ¦ 6/23/2026 to 9/23/2026 Payment Date 9/23/2026 Number of Days ¦ 92 Rate ¦ 4.44735 Denomination USD ¦ 200000 ¦ 30000000 ¦ Amount Payable per Denomination ¦ 2273.09 ¦ 340963.5 ¦ Bank of New Yor