Mercury Green Bond offer – books closed

25/03/2026 12:53 NZDT, OFFER

Following the bookbuild process for its offer of 7 year unsecured, unsubordinated, fixed rate green bonds (Green Bonds), Mercury NZ Limited (Mercury) confirmed today that the offer has closed and $250 million of Green Bonds have been allocated to the participants (or their clients) involved in the bookbuild process. This includes oversubscriptions of $50 million. There was no public pool for the offer.

The issue margin for the Green Bonds has been set at 0.95% per annum and the interest rate will be announced later today alongside the release of the final terms sheet.

For further details investors can contact the Joint Lead Managers (details below) or their usual financial advice provider.

Arranger and Joint Lead Manager

Westpac - 0800 772 142

Joint Lead Managers

BNZ - 09 924 9602

Craigs Investment Partners - 0800 272 442

Forsyth Barr - 0800 367 227

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

09 282 1158

mercurycommunications@mercury.co.nz