Westpac Banking Corporation (“WBC”) - Trading Halt

Memorandum To: Market Participants From: NZX Product Operations Date: Tuesday, 5 May 2026 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 equity securities. The trading halt was placed at pre-market open today. Attached is the trading halt application, for further information. Please contact NZX Product Operations on +64 4 496 2853 or productoperations@nzx.com with any queries. ENDS