Company: WEBNF
Filing Date: 2025-06-26
Form Type: 424B5
Source: 0001104659-25-062718
Chunk: 11

Company: WESTPAC BANKING CORP
Filing Date: 2025-06-26
Form: 424B5
Chunk 11
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 runoff and was sold in March 2025. The segment operates under the Westpac, St.George, BankSA, Bank of Melbourne and BT brands.

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WIB services predominantly corporate, institutional and government clients through three areas of specialization: Corporate & Institutional Banking, which we refer to as CIB; Global Transaction Services, which we refer to as GTS; and Financial Markets, which we refer to as FM. CIB uses dedicated industry relationship and specialist product teams to support clients’ borrowing needs. GTS provides payments and liquidity management solutions to WIB’s clients and Westpac’s domestic and international payments infrastructure. FM provides a range of risk management, investment and debt capital markets solutions to WIB clients and access to financial markets products for consumer and business customers. Clients are supported throughout Australia and via branches and subsidiaries located in New Zealand, New York, London, Frankfurt and Singapore.

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Westpac New Zealand provides banking and wealth products and services for consumer, business and institutional customers in New Zealand.

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The Group Businesses segment comprises:

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Treasury, which is responsible for the management of the Group’s balance sheet including wholesale funding, capital and liquidity. Treasury also manages interest rate risk and foreign exchange risks associated with wholesale funding;

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Enterprise services, which include earnings on capital not allocated to segments, certain intra-group transactions and gains/losses from asset sales, earnings and costs associated with the Group’s fintech investments; and

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Other costs not directly attributable to segments include Corporate Affairs, a portion of enterprise technology costs related to UNITE in prior periods, certain customer remediation expenses and enterprise provisions.

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TABLE OF CONTENTS

#### The Offering
The following is a brief summary of some of the terms of this offering. For a more complete description of the terms of the notes, see “Description of the Notes” in this prospectus supplement and “Description of the Senior Debt Securities” in the accompanying prospectus.

#### Issuer
Westpac Banking Corporation.

#### Notes Offered
US$750,000,000 aggregate principal amount of 4.354% notes due July 1, 2030.

US$750,000,000 aggregate principal amount of floating rate notes due July 1, 2030.

#### Maturity Date
The fixed rate notes and the floating rate notes will mature on July 1, 2030.

#### Interest Rate
We will pay interest on the fixed rate notes at a rate of 4.354% per year. We