CORRECTION: HY2023 Results Announcement

The text of the previous announcement incorrectly stated the difference between HY2022 and HY2023 operating earnings (EBITDAF) as $223m. The correct figure is $209m. The tabular HY23 Financial Results Summary showed the correct HY2022 and HY2023 figures. The difference is not material and is corrected for completeness. An updated News Release is attached. ENDS Howard Thomas General Counsel and Company Secretary Mercury NZ Limited For investor relations queries, please contact: William Meek Chief Financial Officer 0275 173 470 investor@mercury.co.nz For media queries, please contact: Shannon Goldstone Head of Communications 027 210 5337 media@mercury.co.nz End CA:00407041 For:MCY Type:GENERAL Time:2023-02-21 09:42:08