| 14/06/23 | 09:34:08 | 14 Jun 2023 | | Holding(s) in Company | RNS |
| 12/06/23 | 17:43:00 | 12 Jun 2023 | | Holding(s) in Company | RNS |
| 12/06/23 | 09:00:01 | 12 Jun 2023 | | Annual Financial Report | RNS |
| 09/06/23 | 16:18:11 | 9 Jun 2023 | | Holding(s) in Company | RNS |
| 08/06/23 | 15:05:28 | 8 Jun 2023 | | Holding(s) in Company | RNS |
| 07/06/23 | 15:59:14 | 7 Jun 2023 | | Holding(s) in Company | RNS |
| 07/06/23 | 14:39:10 | 7 Jun 2023 | | Holding(s) in Company | RNS |
| 02/06/23 | 08:48:18 | 2 Jun 2023 | | Holding(s) in Company | RNS |
| 31/05/23 | 15:58:54 | 31 May 2023 | | Holding(s) in Company | RNS |
| 31/05/23 | 15:45:41 | 31 May 2023 | | Holding(s) in Company | RNS |
| 26/05/23 | 15:19:45 | 26 May 2023 | | Holding(s) in Company | RNS |
| 25/05/23 | 07:00:10 | 25 May 2023 | | Directorate Change | RNS |
| 25/05/23 | 07:00:07 | 25 May 2023 | | Johnson Matthey full year results | RNS |
| 24/05/23 | 16:29:37 | 24 May 2023 | | Holding(s) in Company | RNS |
| 22/05/23 | 10:16:08 | 22 May 2023 | | Holding(s) in Company | RNS |
| 22/05/23 | 07:00:04 | 22 May 2023 | | Johnson Matthey and Hystar strategic partnership | RNS |
| 19/05/23 | 15:07:06 | 19 May 2023 | | Holding(s) in Company | RNS |
| 19/05/23 | 12:39:11 | 19 May 2023 | | Director/PDMR Shareholding | RNS |
| 16/05/23 | 16:16:09 | 16 May 2023 | | Holding(s) in Company | RNS |
| 16/05/23 | 14:49:23 | 16 May 2023 | | Holding(s) in Company | RNS |
| 10/05/23 | 09:39:37 | 10 May 2023 | | Holding(s) in Company | RNS |
| 03/05/23 | 07:00:02 | 3 May 2023 | | JM announces sale of Diagnostic Services | RNS |
| 26/04/23 | 07:00:11 | 26 Apr 2023 | | Company Secretary Change | RNS |
| 21/04/23 | 07:00:01 | 21 Apr 2023 | | Director/PDMR Shareholding | RNS |
| 14/04/23 | 08:30:02 | 14 Apr 2023 | | Holding(s) in Company | RNS |
| 12/04/23 | 16:56:11 | 12 Apr 2023 | | Holding(s) in Company | RNS |
| 12/04/23 | 16:45:08 | 12 Apr 2023 | | Holding(s) in Company | RNS |
| 11/04/23 | 08:30:01 | 11 Apr 2023 | | Holding(s) in Company | RNS |
| 05/04/23 | 15:40:05 | 5 Apr 2023 | | Holding(s) in Company | RNS |
| 29/03/23 | 17:00:37 | 29 Mar 2023 | | Holding(s) in Company | RNS |
| 16/03/23 | 17:11:30 | 16 Mar 2023 | | Director/PDMR Shareholding | RNS |
| 15/03/23 | 15:14:48 | 15 Mar 2023 | | Holding(s) in Company | RNS |
| 14/03/23 | 16:14:26 | 14 Mar 2023 | | Holding(s) in Company | RNS |
| 14/03/23 | 11:53:17 | 14 Mar 2023 | | Holding(s) in Company | RNS |
| 01/03/23 | 12:40:32 | 1 Mar 2023 | | Holding(s) in Company | RNS |
| 28/02/23 | 16:03:21 | 28 Feb 2023 | | Holding(s) in Company | RNS |
| 27/02/23 | 17:37:36 | 27 Feb 2023 | | Holding(s) in Company | RNS |
| 27/02/23 | 07:00:08 | 27 Feb 2023 | | Holding(s) in Company | RNS |
| 16/02/23 | 14:49:05 | 16 Feb 2023 | | Director/PDMR Shareholding | RNS |
| 16/02/23 | 14:19:25 | 16 Feb 2023 | | Holding(s) in Company | RNS |
| 14/02/23 | 14:07:01 | 14 Feb 2023 | | Holding(s) in Company | RNS |
| 13/02/23 | 16:15:46 | 13 Feb 2023 | | Holding(s) in Company | RNS |
| 13/02/23 | 10:50:55 | 13 Feb 2023 | | Director/PDMR Shareholding | RNS |
| 13/02/23 | 08:30:05 | 13 Feb 2023 | | Holding(s) in Company | RNS |
| 10/02/23 | 15:36:27 | 10 Feb 2023 | | Holding(s) in Company | RNS |
| 07/02/23 | 17:56:20 | 7 Feb 2023 | | Holding(s) in Company | RNS |
| 07/02/23 | 17:46:17 | 7 Feb 2023 | | Holding(s) in Company | RNS |
| 06/02/23 | 08:00:01 | 6 Feb 2023 | | Holding(s) in Company | RNS |
| 02/02/23 | 17:40:53 | 2 Feb 2023 | | Holding(s) in Company | RNS |
| 02/02/23 | 16:27:48 | 2 Feb 2023 | | Holding(s) in Company | RNS |
