| 11/09/25 | 16:13:39 | 11 Sept 2025 | | Director/PDMR Shareholding | RNS |
| 08/09/25 | 18:00:05 | 8 Sept 2025 | | Holding(s) in Company | RNS |
| 04/09/25 | 17:19:55 | 4 Sept 2025 | | Holding(s) in Company | RNS |
| 02/09/25 | 16:07:14 | 2 Sept 2025 | | Holding(s) in Company | RNS |
| 29/08/25 | 12:05:14 | 29 Aug 2025 | | Total Voting Rights | RNS |
| 26/08/25 | 14:07:28 | 26 Aug 2025 | | Director/PDMR Shareholding | RNS |
| 13/08/25 | 16:38:19 | 13 Aug 2025 | | Director/PDMR Shareholding | RNS |
| 13/08/25 | 13:51:29 | 13 Aug 2025 | | Director/PDMR Shareholding | RNS |
| 05/08/25 | 17:19:01 | 5 Aug 2025 | | Holding(s) in Company | RNS |
| 05/08/25 | 16:50:12 | 5 Aug 2025 | | Director/PDMR Shareholding | RNS |
| 25/07/25 | 14:12:52 | 25 Jul 2025 | | Holding(s) in Company | RNS |
| 23/07/25 | 14:23:18 | 23 Jul 2025 | | Holding(s) in Company | RNS |
| 18/07/25 | 12:07:34 | 18 Jul 2025 | | Director/PDMR Shareholding | RNS |
| 18/07/25 | 09:18:29 | 18 Jul 2025 | | Holding(s) in Company | RNS |
| 17/07/25 | 14:20:11 | 17 Jul 2025 | | Result of AGM | RNS |
| 17/07/25 | 07:00:10 | 17 Jul 2025 | | Appointment of Andrew Cosslett as Chair | RNS |
| 09/07/25 | 16:48:44 | 9 Jul 2025 | | Holding(s) in Company | RNS |
| 08/07/25 | 09:55:13 | 8 Jul 2025 | | Holding(s) in Company | RNS |
| 01/07/25 | 07:00:10 | 1 Jul 2025 | | Holding(s) in Company | RNS |
| 23/06/25 | 15:51:04 | 23 Jun 2025 | | Holding(s) in Company | RNS |
| 20/06/25 | 15:28:39 | 20 Jun 2025 | | Director/PDMR Shareholding | RNS |
| 17/06/25 | 16:41:28 | 17 Jun 2025 | | Holding(s) in Company | RNS |
| 12/06/25 | 09:00:03 | 12 Jun 2025 | | Annual Financial Report - Part 2 | RNS |
| 12/06/25 | 09:00:01 | 12 Jun 2025 | | Annual Financial Report - Part 1 | RNS |
| 11/06/25 | 15:50:10 | 11 Jun 2025 | | Holding(s) in Company | RNS |
| 06/06/25 | 16:10:38 | 6 Jun 2025 | | Holding(s) in Company | RNS |
| 05/06/25 | 13:28:53 | 5 Jun 2025 | | Holding(s) in Company | RNS |
| 04/06/25 | 16:38:07 | 4 Jun 2025 | | Holding(s) in Company | RNS |
| 30/05/25 | 15:38:53 | 30 May 2025 | | Holding(s) in Company | RNS |
| 28/05/25 | 14:46:19 | 28 May 2025 | | Holding(s) in Company | RNS |
| 27/05/25 | 16:36:47 | 27 May 2025 | | Holding(s) in Company | RNS |
| 27/05/25 | 16:24:13 | 27 May 2025 | | Holding(s) in Company | RNS |
| 27/05/25 | 07:01:01 | 27 May 2025 | | Holding(s) in Company | RNS |
| 27/05/25 | 07:00:14 | 27 May 2025 | | Holding(s) in Company | RNS |
| 22/05/25 | 17:09:30 | 22 May 2025 | | Director/PDMR Shareholding | RNS |
| 22/05/25 | 16:38:13 | 22 May 2025 | | Holding(s) in Company | RNS |
| 22/05/25 | 07:01:01 | 22 May 2025 | | Johnson Matthey Full Year Results | RNS |
| 22/05/25 | 07:00:08 | 22 May 2025 | | Agreement to sell Catalyst Technologies business | RNS |
| 20/05/25 | 10:35:31 | 20 May 2025 | | Holding(s) in Company | RNS |
| 19/05/25 | 16:15:28 | 19 May 2025 | | Holding(s) in Company | RNS |
| 19/05/25 | 07:00:09 | 19 May 2025 | | Holding(s) in Company | RNS |
| 15/05/25 | 17:53:06 | 15 May 2025 | | Holding(s) in Company | RNS |
| 25/04/25 | 14:43:32 | 25 Apr 2025 | | Holding(s) in Company | RNS |
| 24/04/25 | 15:28:06 | 24 Apr 2025 | | Holding(s) in Company | RNS |
| 24/04/25 | 08:00:00 | 24 Apr 2025 | | Holding(s) in Company | RNS |
| 17/04/25 | 15:35:51 | 17 Apr 2025 | | Director/PDMR Shareholding | RNS |
| 26/03/25 | 15:46:46 | 26 Mar 2025 | | Holding(s) in Company | RNS |
| 25/03/25 | 16:50:10 | 25 Mar 2025 | | Holding(s) in Company | RNS |
| 24/03/25 | 15:08:53 | 24 Mar 2025 | | Holding(s) in Company | RNS |
| 21/03/25 | 16:41:52 | 21 Mar 2025 | | Holding(s) in Company | RNS |
