Capital Change Notice

17/09/2026 16:26 NZST, SECISSUE

Attached is a Capital Change Notice in respect of an issue of unquoted performance share rights pursuant to Mercury’s FY27–FY29 Long Term Incentive Plan.

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

Communications

09 282 1158

mercurycommunications@mercury.co.nz