Replacement: Director/PDMR Shareholding

NIOX Group plc

("NIOX" or the "Company")

The following announcement, originally released on the 28 March 2024 at 16:45 (RNS:7922I), has been amended for the resulting Directors' interests (shareholdings and percentages). The figures in the original release did not reflect the increases arising from the exercise of SAYE options announced on the 27 March 2024.

Replacement: Director/PDMR Shareholding

Oxford, UK - 28 March 2024: NIOX Group plc (AIM: NIOX) announce it has today granted share awards to the Executive Directors over a total of 1,340,626 new ordinary shares in the Company ("Ordinary Shares") in respect of their 2023 bonus. These awards were made under the terms of the Deferred Share Bonus Plan (the "Plan").

As per the Company's remuneration policy, 25% of the shares awarded are issued immediately and 75% of the shares awarded are to be deferred for a two-year period, other than for the sale of shares to satisfy any tax liability created on grant. Whilst a total of 638,987 shares have been sold by the Executive Directors to satisfy tax liabilities, each Executive Director's holding has increased following these awards.

The total awards granted today under the Plan were as follows:

Note:

1      Calculated on the basis of closing mid-market price on 27 March 2024 of 64p

2      These 385,032 Ordinary Shares will be issued to the Executive Directors on or around 28 March 2026. A further announcement will be made at the relevant time.

As a result, the following shares were today allotted to the Executive Directors:

The following shares were sold on behalf of the Executive Directors:

Note:

1    Calculated on the basis of sale price of 62.38p

In addition, the following shares were allotted to the Executive Directors in respect of their deferred balances due under the 2022 Plan:

The 1,224,557 new Ordinary Shares issued in connection with these awards are subject to an existing block admission for the respective Plans and rank pari passu with the existing ordinary shares of the Company.

Resulting Interests

Following these transactions, Ian Johnson holds 996,825 Ordinary Shares, Jonathan Emms holds 1,005,942 Ordinary Shares and Michael Roller holds 748,174 Ordinary Shares. This equates to 0.24%, 0.24% and 0.18% of the issued share capital of the Company respectively.

Voting rights

Following the above, the Company's issued share capital now consists of 423,971,260 Ordinary Shares, each carrying one voting right. Therefore, the total number of voting rights in the Company is 423,971,260. 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 detail is provided below in accordance with the requirements of UK MAR.

Notification and public disclosure of transactions by persons discharging managerial responsibilities and persons closely associated with them