Business
Grant of Options
NIOX Group plc announced the grant of options to Executive Directors over 1,563,605 new ordinary shares under its 2026 Performance Share Plan. The options are exercisable at a nominal value of 0.08p each and will vest on the third anniversary of the grant date, subject to performance conditions including absolute shareholder return and clinical revenue growth over a three-year period. Jonathan Emms received options for 1,060,071 shares, and Sarah Duncan received options for 503,534 shares. These options are exercisable until the tenth anniversary of the grant date. Disclaimer*

About this update from Niox Group Plc
NIOX Group plc (the "Company") Grant of options Oxford, UK - 9 April 2026: NIOX Group plc (AIM: NIOX) announces that it has today granted options to certain Executive Directors (the "Options") over a total of 1,563,605 new ordinary shares in the Company ("Ordinary Shares") under the Company's 2026 Performance Share Plan (the "Plan"). The Options are exercisable at nominal value over the same number of Ordinary Shares and will vest on the third anniversary of the date of grant. The Options remain exercisable until the tenth anniversary of the date of grant, subject to the Plan's rules. Vesting of the Options is subject to performance over a three-year period and will be determined by reference to absolute shareholder return and clinical revenue growth. The Options awarded to each Executive Director are shown below: Number of Options Jonathan Emms 1,060,071 Sarah Duncan 503,534 1,563,605 Additional disclosure in relation to PDMR dealing is included at the end of this announcement. For further information, please contact: NIOX Group plc Jonathan Emms, Chief Executive Officer Sarah Duncan, Chief Financial Officer Rebecca Clayton-Wherity, Company Secretary +44 (0) 3303 309 356 Singer Capital Markets (Nominated Adviser and Broker) Jen Boorer / James Fischer +44 (0) 20 7496 3000 Notification and public disclosure of transactions by persons discharging managerial responsibilities and persons closely associated with them 1. Details of the person discharging managerial responsibilities / person closely associated a. Name 1. Jonathan Emms 2. Sarah Duncan 2. Reason for the notification a. Position/status 1. Chief Executive Officer 2. Chief Financial Officer b. Initial notification /Amendment Initial notification 3. Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor a. Name NIOX Group plc b. &...