Westpac Banking Corp (“WBC”) – Trading Halt of Securities

Memorandum To: Market Participants From: NZX Product Operations Date: Monday 06 November 2023 Subject: Westpac Banking Corporation ("WBC") - Trading Halt of Securities Message: NZ RegCo advises that, at the request of the Westpac Banking Corporation ("WBC"), it has placed a trading halt on WBC ordinary shares. The trading halt was placed at premarket open today, Monday 06 November 2023. The trading halt has been put in place pending the release of WBC's 2023 Full Year Financial Results. The trading halt will remain in place until the release of WBC 2023 Annual Results or market open on Tuesday 07 November 2023. Please contact NZX Product Operations on +64 4 496 2853 or productoperations@nzx.com with any queries. ENDS End CA:00421065 For:WBC Type:HALT Time:2023-11-06 08:33:39