International investor presentations

Mercury is holding a series of international investor meetings in September and October 2025. The presentation materials are attached. 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