Total Voting Rights

NIOX Group plc

(the "Company")

Total Voting Rights

5 November 2026

In accordance with the requirements of the FCA's Disclosure and Transparency Rule, NIOX Group plc (the "Company") (AIM: NIOX) confirms that as at 30 October 2026 the Company's issued share capital consisted of 405,273,133 Ordinary Shares, each carrying one voting right. No shares are held in treasury.

Since the last total voting rights disclosure on completion of the recent Tender Offer, certain employees exercised options over a total of 31,820 Ordinary Shares of 0.08p (“Ordinary Shares”) under the Company’s share option schemes.

Admission of the new Ordinary Shares issued has been satisfied via the block listing for the relevant option scheme and rank pari passu with the existing ordinary shares of the Company.

The above figure of 405,273,133 Ordinary Shares 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.

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