Quotation Notice - Mercury NZ Limited Bonds ("MCY080")

QUOTATION NOTICE: NZX DEBT MARKET MERCURY NZ LIMITED (“MCY080”) BONDS Company: Mercury NZ Limited (NS) (“MCY”) Security Code: MCY080 ISIN: NZMCYDG008C7 Details of Issue: NZ$250,000,000 of unsecured, unsubordinated, fixed rate green bonds Offer Opening Date: Monday, 23 March 2026 Offer Closing Date: 11:00am, Wednesday, 25 March 2026 Maturity Date: Friday, 1 April 2033 Interest Rate: 5.17% per annum Interest Payment Dates: 1 April and 1 October of each year up to and including the Maturity Date Date of First Interest Payment: Thursday, 1 October 2026 First Interest Paid To: Holder on Record Date Record Date: 10 calendar days before the relevant Interest Payment Date, or if that date is not a business day, the immediately preceding business day Minimum Application Amount: NZ$5,000 and multiples of $1,000 thereafter Minimum Holding: NZ$5,000 Minimum Transferable Amount: NZ$1,000 Face Value: NZ$1.00 per Bond Supervisor: The New Zealand Guardian Trust Company Limited Joint Lead Managers: Westpac Banking Corporation (ABN 33 007 457 141) (acting through its New Zealand Branch) as Arranger and Joint Lead Manager Bank of New Zealand, Craigs Investment Partners Limited and Forsyth Barr Limited as Joint Lead Managers Green Bond Co-ordinator: Westpac New Zealand Limited Trust Deed Dated: Master Trust Deed dated 4 April 2003 (as amended from time to time) and Supplemental Trust Deed dated 23 March 2026 Registrar: Computershare Investor Services Limited Settlement Status: NZCDC Settlement System Issue Date: Wednesday, 1 April 2026 Expected Commencement of Trading on the NZX Debt Market: Thursday, 2 April 2026 Mark Peterson Chief Executive Officer NZX Limited 25 March 2026