NIOX GROUP PLC

Share Issue/Capital Change • Oct 1, 2025

National Storage Mechanism | Additional information

RNS Number : 6945B

Niox Group PLC

01 October 2025

NIOX Group plc

Block Listing Interim Review  

Oxford, UK - 01 October 2025:    NIOX Group plc (AIM: NIOX) makes the following notification pursuant to Schedule Six of the AIM Rules for Companies regarding its existing block listing arrangements.

Name of the company:

NIOX Group plc

Name of relevant scheme:

1.	Circassia 2015 Performance Share Plan Scheme
2.	Circassia 2016 Performance Share Plan Scheme
3.	Circassia 2017 Performance Share Plan Scheme
4.	Circassia 2020 Save As You Earn Scheme (UK)
5.	NIOX 2022 Deferred Share Bonus Plan
6.	NIOX 2020 Performance Share Plan Scheme
7.	NIOX 2021 Save As You Earn Scheme (US)
8.	NIOX 2023 Deferred Share Bonus Plan
9.	NIOX 2022 Performance Share Plan Scheme
10.	NIOX 2019 Performance Share Plan Scheme
11.	NIOX 2022 Save As You Earn Scheme (UK)

Period of return:

From:

31 March 2025

To:

30 September 2025

Balance of unallotted securities under scheme(s) from previous return:

1.	135,427
2.	542,111
3.	112,115
4.	309,633
5.	617,762
6.	3,137,154
7.	-
8.	514,406
9.	-
10.	-
11.	-
Total	5,368,608

Plus:    The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

1.	-
2.	-
3.	-
4.	-
5.	-
6.	-
7.	-
8.	-
9.	6,862,848
10.	1,128,966
11.	78,927

Less:    Number of securities issued/allotted under scheme(s) during period:

1.	7,504
2.	15,729
3.	-
4.	-
5.	363,006
6.	2,479,339
7.	-
8.	249,844
9.	5,567,752
10.	1,128,966
11.	78,927

Equals:    Balance under scheme(s) not yet issued/allotted at end of period:

1.	127,923
2.	526,382
3.	112,115
4.	309,633
5.	254,756
6.	657,815
7.	-
8.	264,562
9.	1,295,096
10.	-
11.	-
Total	3,548,282

Number and class of securities originally listed and the date of admission:

1.	400,000 - 21 May 2018
2.	930,000 - 1 July 2019
3.	980,000 - 22 May 2020
3.	250,000 - 11 October 2021
4.	1,141,658 - 8 April 2021
5.	1,470,000 - 28 March 2023
6.	5,009,135 - 2 August 2023
7.	71,885 - 10 November 2023
8.	1,470,000 - 28 March 2024
9.	6,862,848 - 16 April 2025
10.	1,128,966 - 28 May 2025
11.	78,927 - 28 May 2025

Name of contact:	Rebecca Clayton-Wherity
Telephone number of contact:	+44 3303 309 356

For further information, please contact:
Singer Capital Markets (Nominated Adviser & Broker) Jen Boorer / James Fischer / James Todd	+44 (0) 20 7496 3000
Investec Bank plc Ben Lawrence / Lydia Zychowska	+44 (0) 20 7597 4000

This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. For further information, please contact [email protected] or visit www.rns.com.

RNS may use your IP address to confirm compliance with the terms and conditions, to analyse how you engage with the information contained in this communication, and to share such analysis on an anonymised basis with others as part of our commercial services. For further information about how RNS and the London Stock Exchange use the personal data you provide us, please see our Privacy Policy.

END

BLRPKDBPQBDDPKK