WESTPAC SECURITIES NZ LIMITED and WESTPAC NEW ZEALAND LIMITED

Update of US$15,000,000,000 Programme for the Issuance of Debt Instruments
unconditionally and irrevocably guaranteed by Westpac New Zealand Limited (in the case of instruments issued by Westpac Securities NZ Limited)

Westpac Securities NZ Limited and Westpac New Zealand Limited have updated the US$ 15,000,000,000 programme for the issuance of debt instruments, unconditionally and irrevocably guaranteed by Westpac New Zealand Limited (in the case of instruments issued by Westpac Securities NZ Limited) (the "Programme").

The base prospectus in relation to the Programme is dated 24 November 2025 (the "Prospectus") and has been approved by the UK Financial Conduct Authority.

To view the full document, please paste the following URL into the address bar of your browser:

http://www.rns-pdf.londonstockexchange.com/rns/7744I_1-2025-11-24.pdf

A copy of the Prospectus has been submitted to the National Storage Mechanism and will shortly be available for inspection at https://data.fca.org.uk/#/nsm/nationalstoragemechanism.

For further information, please contact:

Malika Hariharan
Westpac Securities NZ Limited (London branch)
Camomile Court
23 Camomile Street
London EC3A 7LL

DISCLAIMER - INTENDED ADDRESSEES

Please note that the information contained in the Prospectus may be addressed to and/or targeted at persons who are residents of particular countries (specified in the Prospectus) only and is not intended for use and should not be relied upon by any person outside these countries and/or to whom the offer contained in the Prospectus is not addressed.  Prior to relying on the information contained in the Prospectus you must ascertain from the Prospectus whether or not you are part of the intended addressees of the information contained therein.

This publication does not constitute an offering of debt instruments (the "Instruments") or the guarantee by Westpac New Zealand Limited of Instruments issued by Westpac Securities NZ Limited (the "Guarantee"), and is not for distribution in or into the United States. The Instruments and the Guarantee have not been and will not be registered under the United States Securities Act of 1933 as amended (the "Securities Act"), or any relevant securities laws of any state of the United States and, subject to certain exceptions, the Instruments may not be offered, sold or delivered in the United States or to, or for the account or benefit of, U.S. persons, as such terms are defined in Regulation S under the Securities Act.  Instruments (and the Guarantee) in bearer form are subject to U.S. tax law requirements and may not be offered, sold or delivered within the United States or its possessions or to a U.S. person, except in certain transactions permitted by U.S. tax regulations.  Terms used in the preceding sentence have the meanings given to them by the U.S. Internal Revenue Code and regulations thereunder. There will be no public offering of the Instruments or the Guarantee in the United States.

Your right to access this service is conditional upon complying with the above requirement.  In particular, your accessing this service will constitute your representation that you are not in the United States and you are not a U.S. person within the meaning of Regulation S under the Securities Act and the U.S. Internal Revenue Code and regulations thereunder.