Capital Change Notice relating to DRP

Mercury NZ Limited provides the attached Capital Change Notice under NZX Listing Rule 3.13.1. This Notice relates to the issue of 7,647,925 ordinary shares under Mercury’s Dividend Reinvestment Plan (DRP), announced on 22 February 2022, in respect of the FY2026 interim dividend. ENDS Howard Thomas General Counsel and Company Secretary Mercury NZ Limited For investor relations queries, please contact: Paul Ruediger Head of Business Performance & Investor Relations 027 517 3470 investor@mercury.co.nz For media inquiries, please contact: Catherine Morab Reputation and Social Impact Lead 027 210 5337 mercurycommunications@mercury.co.nz