Holding(s) in Company

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NOTIFICATION OF MAJOR HOLDINGS (to be sent to the relevant issuer and to the FCA in Microsoft Word format if possible)ⁱ

1a. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attachedⁱⁱ:			NIOX GROUP PLC
1b. Please indicate if the issuer is a non-UK issuer (please mark with an "X" if appropriate)
Non-UK issuer
2. Reason for the notification (please mark the appropriate box or boxes with an "X")
An acquisition or disposal of voting rights						X
An acquisition or disposal of financial instruments
An event changing the breakdown of voting rights
Other (please specify)ⁱⁱⁱ:
3. Details of person subject to the notification obligation^iv
Name			Artemis Investment Management LLP
City and country of registered office (if applicable)			London, United Kingdom
4. Full name of shareholder(s) (if different from 3.)^v
Name
City and country of registered office (if applicable)
5. Date on which the threshold was crossed or reached^vi:			20/01/2026
6. Date on which issuer notified (DD/MM/YYYY):			21/01/2026
7. Total positions of person(s) subject to the notification obligation
	% of voting rights attached to shares (total of 8. A)	% of voting rights through financial instruments (total of 8.B 1 + 8.B 2)		Total of both in % (8.A + 8.B)	Total number of voting rights held in issuer^vii
Resulting situation on the date on which threshold was crossed or reached	3.214428%			3.214428%	13,432,997.00
Position of previous notification (if applicable)

8. Notified details of the resulting situation on the date on which the threshold was crossed or reached^viii
A: Voting rights attached to shares
Class/type of shares ISIN code (if possible)	Number of voting rights^ix		% of voting rights
	Direct (DTR5.1)	Indirect (DTR5.2.1)	Direct (DTR5.1)	Indirect (DTR5.2.1)
Equity: GB00BJVD3B28		13,432,997.00		3.214428%

SUBTOTAL 8. A	13,432,997.00		3.214428%

B 1: Financial Instruments according to DTR5.3.1R (1) (a)
Type of financial instrument	Expiration date^x	Exercise/ Conversion Period^xi	Number of voting rights that may be acquired if the instrument is exercised/converted.	% of voting rights

		SUBTOTAL 8. B 1

B 2: Financial Instruments with similar economic effect according to DTR5.3.1R (1) (b)
Type of financial instrument	Expiration date^x	Exercise/ Conversion Period ^xi	Physical or cash settlement^xii	Number of voting rights	% of voting rights

			SUBTOTAL 8.B.2

9. Information in relation to the person subject to the notification obligation (please mark the applicable box with an "X")
Person subject to the notification obligation is not controlled by any natural person or legal entity and does not control any other undertaking(s) holding directly or indirectly an interest in the (underlying) issuer^xiii
Full chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held starting with the ultimate controlling natural person or legal entity^xiv (please add additional rows as necessary)				X
Name^xv	% of voting rights if it equals or is higher than the notifiable threshold	% of voting rights through financial instruments if it equals or is higher than the notifiable threshold	Total of both if it equals or is higher than the notifiable threshold
Artemis Investment Management LLP	3.214428	0.000000	3.214428
Artemis Fund Managers Limited	3.214428	0.000000	3.214428


10. In case of proxy voting, please identify:
Name of the proxy holder
The number and % of voting rights held
The date until which the voting rights will be held

11. Additional information^xvi

Summary by AI ^BETAClose X

Companies

UK 100

Latest directors dealings

Place of completion	Edinburgh
Date of completion	21/01/2026

Holding(s) in Company

Summary by AI BETAClose X

Companies

UK 100

Latest directors dealings

Summary by AI ^BETAClose X