NZD/AUD FX rate for FY2025 final dividend

The foreign exchange rate used for Mercury’s FY2025 final dividend paid to Australian investors in Australian Dollars (NZD/AUD) has been set at 0.8875. The dividend will be paid on 30 September 2025. Attached is an amended ASX Appendix 3A.1 Notification of Dividend/Distribution released to the ASX. 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