| 21/05/25 | 17:15:00 | 21 May 2025 | | Holding(s) in Company | RNS |
| 21/05/25 | 17:15:00 | 21 May 2025 | | Block Listing Application | RNS |
| 21/05/25 | 17:00:01 | 21 May 2025 | | Holding(s) in Company | RNS |
| 21/05/25 | 12:30:00 | 21 May 2025 | | Exercise of Options, Director Dealing and TVR | RNS |
| 14/05/25 | 15:00:43 | 14 May 2025 | | Result of Annual General Meeting | RNS |
| 14/05/25 | 07:00:01 | 14 May 2025 | | AGM Statement | RNS |
| 01/05/25 | 07:00:02 | 1 May 2025 | | Total Voting Rights Update | RNS |
| 24/04/25 | 10:49:46 | 24 Apr 2025 | | Dividend Declaration | RNS |
| 15/04/25 | 08:00:01 | 15 Apr 2025 | | Notice of 2025 Annual General Meeting | RNS |
| 11/04/25 | 11:31:33 | 11 Apr 2025 | | PDMR / PCA Shareholding | RNS |
| 11/04/25 | 07:00:08 | 11 Apr 2025 | | Response to Rule 2.8 Announcement | RNS |
| 10/04/25 | 15:30:01 | 10 Apr 2025 | | Block Listing Application | RNS |
| 08/04/25 | 16:00:01 | 8 Apr 2025 | | Form 8.3 - Niox Group | RNS |
| 02/04/25 | 13:02:37 | 2 Apr 2025 | | Form 8 (OPD) NIOX Group PLC | RNS |
| 02/04/25 | 08:00:00 | 2 Apr 2025 | | Form 8.3 - NIOX Group PLC | RNS |
| 01/04/25 | 08:00:00 | 1 Apr 2025 | | Director/PDMR Shareholding | RNS |
| 01/04/25 | 07:00:09 | 1 Apr 2025 | | Final Results | RNS |
| 31/03/25 | 11:27:37 | 31 Mar 2025 | | Block listing Interim Review | RNS |
| 26/03/25 | 14:22:33 | 26 Mar 2025 | | Form 8.3 - NIOX Group PLC - Amendment | RNS |
| 26/03/25 | 11:00:36 | 26 Mar 2025 | | Holding(s) in Company | RNS |
| 25/03/25 | 16:30:00 | 25 Mar 2025 | | Holding(s) in Company | RNS |
| 24/03/25 | 17:01:13 | 24 Mar 2025 | | Form 8.3 - NIOX Group PLC | RNS |
| 20/03/25 | 16:28:26 | 20 Mar 2025 | | Statement re Media Speculation | RNS |
| 20/03/25 | 12:52:37 | 20 Mar 2025 | | Statement re Media Speculation | RNS |
| 21/02/25 | 18:19:37 | 21 Feb 2025 | | Holding(s) in Company | RNS |
| 16/01/25 | 07:00:06 | 16 Jan 2025 | | Board Changes | RNS |
| 16/01/25 | 07:00:03 | 16 Jan 2025 | | Full Year Trading Update | RNS |
| 06/01/25 | 12:13:49 | 6 Jan 2025 | | Change of Registered Office | RNS |
| 20/12/24 | 11:06:24 | 20 Dec 2024 | | Holding(s) in Company | RNS |
| 18/12/24 | 18:15:01 | 18 Dec 2024 | | Director/PDMR Shareholding | RNS |
| 17/12/24 | 09:15:09 | 17 Dec 2024 | | Holding(s) in Company | RNS |
| 05/12/24 | 17:40:41 | 5 Dec 2024 | | Holding(s) in Company | RNS |
| 11/11/24 | 17:05:01 | 11 Nov 2024 | | Holding(s) in Company | RNS |
| 28/10/24 | 17:12:45 | 28 Oct 2024 | | PCA Dealing | RNS |
| 25/10/24 | 17:08:50 | 25 Oct 2024 | | Director/PDMR Shareholding, RPT Update & TVR | RNS |
| 25/10/24 | 13:58:52 | 25 Oct 2024 | | Holding(s) in Company | RNS |
| 17/10/24 | 07:00:01 | 17 Oct 2024 | | Result of Tender, Related Party Transaction & TVR | RNS |
| 16/10/24 | 11:45:00 | 16 Oct 2024 | | Result of General Meeting | RNS |
| 01/10/24 | 07:00:03 | 1 Oct 2024 | | Total Voting Rights Update | RNS |
| 30/09/24 | 13:00:01 | 30 Sept 2024 | | Block Listing Interim Review | RNS |
| 24/09/24 | 07:01:00 | 24 Sept 2024 | | Proposed Tender Offer & Notice of General Meeting | RNS |
| 24/09/24 | 07:00:08 | 24 Sept 2024 | | INTERIM RESULTS FOR SIX MONTHS ENDED 30 JUNE 2024 | RNS |
| 18/07/24 | 15:40:29 | 18 Jul 2024 | | Holding(s) in Company | RNS |
| 17/07/24 | 07:00:06 | 17 Jul 2024 | | Trading Update | RNS |
| 01/07/24 | 07:00:08 | 1 Jul 2024 | | Directorate Change | RNS |
| 25/06/24 | 17:52:41 | 25 Jun 2024 | | PDMR / PCA Shareholding | RNS |
| 20/06/24 | 16:03:01 | 20 Jun 2024 | | Holding(s) in Company | RNS |
| 06/06/24 | 18:27:34 | 6 Jun 2024 | | Holding(s) in Company | RNS |
| 06/06/24 | 13:29:21 | 6 Jun 2024 | | Director/PDMR Shareholding | RNS |
| 23/05/24 | 12:26:24 | 23 May 2024 | | Holding(s) in Company | RNS |
