Mercury Green Bond offer – interest rate set

Mercury NZ Limited (Mercury) today announced that, following a bookbuild for its offer of 7 year unsecured, unsubordinated, fixed rate green bonds (Green Bonds), $250 million of Green Bonds have been allocated to participants (or their clients) involved in the bookbuild process. There was no public pool for the offer. The interest rate for the Green Bonds has been set at 5.17% per annum. This reflects an issue margin of 0.95% per annum over the underlying swap rate. The Green Bonds will be issued on 1 April 2026 and will mature on 1 April 2033. The Green Bonds are expected to be quoted on the NZX Debt Market under the ticker code MCY080 on 2 April 2026. A copy of the final terms sheet (updated for the interest rate set out above) will be provided to NZX. For further details investors can contact one of the Joint Lead Managers 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