Exercise of Share Options

THIS ANNOUNCEMENT CONTAINS INSIDE INFORMATION FOR THE PURPOSES OF REGULATION 11 OF THE MARKET ABUSE (AMENDMENT) (EU EXIT) REGULATIONS 2019/310

26 March 2025

SulNOx Group Plc

(the "Company" or "SulNOx")

Exercise of Share Options

(Aquis Stock Exchange: SNOX)

The board of directors of the Company (the "Board") announces that a former employee has exercised 166,666 options for ordinary shares of 2 pence each in the capital of the Company ("Ordinary Shares"), at an exercise price of 36 pence per Ordinary Share (the "Option Shares").  The £60,000 received by the Company will be used for general working capital purposes.

Admission and Total Voting Rights

An application will be made to admit the Option Shares for trading on AQSE Growth Market, which is anticipated to occur on or around 31 March 2025 ("Admission").

On Admission, the Company will have 127,191,739 Ordinary Shares in issue, each with one voting right. The Company does not hold any shares in treasury and therefore the total number of voting rights in the Company is 127,191,739. This figure should be used by shareholders from Admission 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 Guidance and Transparency Rules.

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