Business
Director/PDMR Shareholding and Total Voting Rights
NIOX Group plc announced that on March 31, 2026, Chief Executive Officer Jonathan Emms was issued 135,188 new ordinary shares valued at 0.08p each under the Deferred Share Bonus Plan, bringing his total holding to 3,399,076 shares, representing a 0.813% interest. This issuance increases the company's total issued share capital to 418,074,453 ordinary shares, each with one voting right, which shareholders should use for disclosure calculations under FCA rules. Disclaimer*

About this update from Niox Group Plc
NIOX Group plc ("NIOX" or the "Company") Director/PDMR Shareholding and Total Voting Rights 1 April 2026 NIOX Group plc (AIM: NIOX) announces that on 31 March 2026 it issued 135,188 new ordinary shares in the Company ("Ordinary Shares") to Jonathan Emms, Chief Executive Officer, under the Company's Deferred Share Bonus Plan (the "Plan"). The share issue was made in respect of the annual bonus for the 2023 financial year, which was granted on 20 March 2024. Under the terms of the Company's remuneration policy, 25% of this bonus was paid in shares at that time, with the remaining 75% of this bonus deferred for two years, other than for the sale of shares to satisfy any tax liability created on grant. The 135,188 new Ordinary Shares issued in connection with this award are subject to an existing block admission for the respective Plan and rank pari passu with the Company's existing Ordinary Shares. Following this allotment, Jonathan Emms' interest in the Company is as follows: Number of Ordinary Shares issued Resulting number of Ordinary Shares held Resulting interest in the Company Jonathan Emms 135,188 3,399,076 0.813% Total voting rights Following the above share issue, the Company's issued share capital comprises 418,074,453 Ordinary Shares, each carrying one voting right. This number may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, the Company under the FCA's Disclosure and Transparency Rules. Additional details are provided below in accordance with the requirements of UK MAR. 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.&n...