| 05/08/26 | 13:21:17 | 5 Aug 2026 | | Director/PDMR Shareholding |
| 29/07/26 | 17:29:48 | 29 Jul 2026 | | Updated timetable for ADS consolidation |
| 27/07/26 | 07:00:09 | 27 Jul 2026 | | Circular and Notice of General Meeting published |
| 23/07/26 | 14:38:22 | 23 Jul 2026 | | Completion of the acquisition of Cormetech |
| 17/07/26 | 09:40:00 | 17 Jul 2026 | | Completion of the sale of Catalyst Technologies |
| 16/07/26 | 13:50:52 | 16 Jul 2026 | | Result of AGM |
| 16/07/26 | 07:00:04 | 16 Jul 2026 | | Board change |
| 13/07/26 | 15:28:25 | 13 Jul 2026 | | Director/PDMR Shareholding |
| 06/07/26 | 16:01:33 | 6 Jul 2026 | | Agreed completion date for sale of CT |
| 03/07/26 | 11:45:00 | 3 Jul 2026 | | China regulatory approval for sale of CT |
| 11/06/26 | 12:17:36 | 11 Jun 2026 | | Director/PDMR Shareholding |
| 10/06/26 | 10:00:00 | 10 Jun 2026 | | Annual Financial Report |
| 03/06/26 | 09:03:48 | 3 Jun 2026 | | Director/PDMR Shareholding |
| 02/06/26 | 16:40:56 | 2 Jun 2026 | | Director/PDMR Shareholding |
| 01/06/26 | 16:02:49 | 1 Jun 2026 | | Holding(s) in Company |
| 28/05/26 | 07:05:00 | 28 May 2026 | | Board Changes |
| 28/05/26 | 07:01:00 | 28 May 2026 | | Johnson Matthey acquisition of Cormetech |
| 28/05/26 | 07:00:05 | 28 May 2026 | | Johnson Matthey Full Year Results |
| 14/05/26 | 11:42:16 | 14 May 2026 | | Director/PDMR Shareholding |
| 16/04/26 | 11:51:07 | 16 Apr 2026 | | Director/PDMR Shareholding |
| 24/03/26 | 11:30:46 | 24 Mar 2026 | | Director/PDMR Shareholding |
| 12/03/26 | 14:23:04 | 12 Mar 2026 | | Director/PDMR Shareholding |
| 27/02/26 | 07:00:13 | 27 Feb 2026 | | Director Declaration |
| 24/02/26 | 15:30:22 | 24 Feb 2026 | | Director/PDMR Shareholding |
| 24/02/26 | 09:48:57 | 24 Feb 2026 | | Director/PDMR Shareholding |
| 23/02/26 | 17:19:47 | 23 Feb 2026 | | Director/PDMR Shareholding |
| 23/02/26 | 07:00:12 | 23 Feb 2026 | | Update on Catalyst Technologies sale |
| 12/02/26 | 12:44:08 | 12 Feb 2026 | | Director/PDMR Shareholding |
| 14/01/26 | 14:22:23 | 14 Jan 2026 | | Director/PDMR Shareholding |
| 08/01/26 | 10:01:05 | 8 Jan 2026 | | Holding(s) in Company |
| 30/12/25 | 07:00:01 | 30 Dec 2025 | | Holding(s) in Company |
| 29/12/25 | 07:00:06 | 29 Dec 2025 | | Holding(s) in Company |
| 11/12/25 | 16:51:33 | 11 Dec 2025 | | Director/PDMR Shareholding |
| 20/11/25 | 07:00:14 | 20 Nov 2025 | | Directorate change |
| 20/11/25 | 07:00:11 | 20 Nov 2025 | | Johnson Matthey Half Year Results |
| 13/11/25 | 07:00:13 | 13 Nov 2025 | | Director/PDMR Shareholding |
| 24/10/25 | 11:29:31 | 24 Oct 2025 | | Holding(s) in Company |
| 21/10/25 | 15:44:14 | 21 Oct 2025 | | Holding(s) in Company |
| 13/10/25 | 11:55:04 | 13 Oct 2025 | | Director/PDMR Shareholding |
| 09/10/25 | 07:00:06 | 9 Oct 2025 | | Financial reporting structure and trading update |
| 03/10/25 | 10:23:26 | 3 Oct 2025 | | Holding(s) in Company |
| 30/09/25 | 07:00:27 | 30 Sept 2025 | | Holding(s) in Company |
| 26/09/25 | 17:29:53 | 26 Sept 2025 | | Holding(s) in Company |
| 17/09/25 | 09:00:00 | 17 Sept 2025 | | Director Declaration |
| 15/09/25 | 14:37:26 | 15 Sept 2025 | | Holding(s) in Company |
| 11/09/25 | 16:13:39 | 11 Sept 2025 | | Director/PDMR Shareholding |
| 08/09/25 | 18:00:05 | 8 Sept 2025 | | Holding(s) in Company |
| 04/09/25 | 17:19:55 | 4 Sept 2025 | | Holding(s) in Company |
| 02/09/25 | 16:07:14 | 2 Sept 2025 | | Holding(s) in Company |
| 29/08/25 | 12:05:14 | 29 Aug 2025 | | Total Voting Rights |
