Notice of Annual Shareholders' Meeting

Mercury’s 2026 Annual Shareholders’ Meeting is being held as a hybrid meeting (in person and online) on Friday 18 September 2026. The following materials relating to Mercury’s 2026 Annual Shareholders’ Meeting are shortly being sent to Mercury’s Shareholders: > Notice of Meeting 2026 > Voting/Proxy Form 2026 > Virtual Meeting Guide 2026 ENDS Howard Thomas General Counsel and Company Secretary Mercury NZ Limited For investor relations queries, please contact: Paul Ruediger Investor Relations 027 517 3470 investor@mercury.co.nz For media inquiries, please contact: Catherine Morab Communications 09 282 1158 mercurycommunications@mercury.co.nz