| 31/01/23 | 07:00:09 | 31 Jan 2023 | | JM and Plug agree long-term strategic partnership | RNS |
| 20/01/23 | 16:24:53 | 20 Jan 2023 | | Director/PDMR Shareholding | RNS |
| 19/01/23 | 10:39:09 | 19 Jan 2023 | | Holding(s) in Company | RNS |
| 17/01/23 | 16:06:35 | 17 Jan 2023 | | Holding(s) in Company | RNS |
| 17/01/23 | 16:01:51 | 17 Jan 2023 | | Holding(s) in Company | RNS |
| 11/01/23 | 13:10:42 | 11 Jan 2023 | | Holding(s) in Company | RNS |
| 11/01/23 | 12:53:36 | 11 Jan 2023 | | Holding(s) in Company | RNS |
| 10/01/23 | 08:30:01 | 10 Jan 2023 | | Holding(s) in Company | RNS |
| 04/01/23 | 17:25:05 | 4 Jan 2023 | | Holding(s) in Company | RNS |
| 28/12/22 | 08:46:13 | 28 Dec 2022 | | Holding(s) in Company | RNS |
| 22/12/22 | 10:48:37 | 22 Dec 2022 | | Director/PDMR Shareholding | RNS |
| 15/12/22 | 08:00:01 | 15 Dec 2022 | | Holding(s) in Company | RNS |
| 13/12/22 | 10:53:09 | 13 Dec 2022 | | Holding(s) in Company | RNS |
| 05/12/22 | 16:33:20 | 5 Dec 2022 | | Holding(s) in Company | RNS |
| 30/11/22 | 16:09:28 | 30 Nov 2022 | | Holding(s) in Company | RNS |
| 28/11/22 | 17:39:06 | 28 Nov 2022 | | Holding(s) in Company | RNS |
| 25/11/22 | 09:20:33 | 25 Nov 2022 | | Holding(s) in Company | RNS |
| 24/11/22 | 08:34:19 | 24 Nov 2022 | | Holding(s) in Company | RNS |
| 23/11/22 | 07:00:06 | 23 Nov 2022 | | Johnson Matthey half year results | RNS |
| 18/11/22 | 15:51:06 | 18 Nov 2022 | | Holding(s) in Company | RNS |
| 18/11/22 | 15:28:19 | 18 Nov 2022 | | Director/PDMR Shareholding | RNS |
| 17/11/22 | 16:03:06 | 17 Nov 2022 | | Holding(s) in Company | RNS |
| 17/11/22 | 10:12:57 | 17 Nov 2022 | | Holding(s) in Company | RNS |
| 17/11/22 | 10:02:01 | 17 Nov 2022 | | Holding(s) in Company | RNS |
| 11/11/22 | 17:17:48 | 11 Nov 2022 | | Holding(s) in Company | RNS |
| 11/11/22 | 09:00:02 | 11 Nov 2022 | | Holding(s) in Company | RNS |
| 04/11/22 | 15:16:16 | 4 Nov 2022 | | Holding(s) in Company | RNS |
| 01/11/22 | 17:54:29 | 1 Nov 2022 | | Holding(s) in Company | RNS |
| 01/11/22 | 16:13:04 | 1 Nov 2022 | | Holding(s) in Company | RNS |
| 01/11/22 | 16:11:07 | 1 Nov 2022 | | Holding(s) in Company | RNS |
| 21/10/22 | 16:44:09 | 21 Oct 2022 | | Holding(s) in Company | RNS |
| 20/10/22 | 16:10:46 | 20 Oct 2022 | | Director/PDMR Shareholding | RNS |
| 20/10/22 | 14:48:41 | 20 Oct 2022 | | Holding(s) in Company | RNS |
| 13/10/22 | 11:29:31 | 13 Oct 2022 | | Holding(s) in Company | RNS |
| 11/10/22 | 10:00:01 | 11 Oct 2022 | | Holding(s) in Company | RNS |
| 11/10/22 | 07:00:07 | 11 Oct 2022 | | Holding(s) in Company | RNS |
| 30/09/22 | 14:56:44 | 30 Sept 2022 | | Holding(s) in Company | RNS |
| 30/09/22 | 12:17:28 | 30 Sept 2022 | | Holding(s) in Company | RNS |
| 30/09/22 | 11:34:00 | 30 Sept 2022 | | Director/PDMR Shareholding | RNS |
| 29/09/22 | 10:18:16 | 29 Sept 2022 | | Holding(s) in Company | RNS |
| 27/09/22 | 16:23:35 | 27 Sept 2022 | | Holding(s) in Company | RNS |
| 26/09/22 | 15:35:30 | 26 Sept 2022 | | Holding(s) in Company | RNS |
| 22/09/22 | 15:38:50 | 22 Sept 2022 | | Director/PDMR Shareholding | RNS |
| 20/09/22 | 16:31:31 | 20 Sept 2022 | | Holding(s) in Company | RNS |
| 20/09/22 | 15:30:01 | 20 Sept 2022 | | Director/PDMR Shareholding | RNS |
| 20/09/22 | 14:27:17 | 20 Sept 2022 | | Holding(s) in Company | RNS |
| 15/09/22 | 10:28:11 | 15 Sept 2022 | | Holding(s) in Company | RNS |
| 07/09/22 | 09:49:40 | 7 Sept 2022 | | Holding(s) in Company | RNS |
| 02/09/22 | 16:22:03 | 2 Sept 2022 | | Holding(s) in Company | RNS |
| 01/09/22 | 09:42:48 | 1 Sept 2022 | | Total Voting Rights | RNS |
