| 01/04/26 | 07:00:03 | 1 Apr 2026 | | Total Voting Rights |
| 20/03/26 | 14:06:10 | 20 Mar 2026 | | Director/PDMR Shareholding |
| 10/03/26 | 07:00:07 | 10 Mar 2026 | | Trading Statement |
| 02/03/26 | 07:00:12 | 2 Mar 2026 | | Total Voting Rights |
| 23/02/26 | 12:58:13 | 23 Feb 2026 | | Director/PDMR Shareholding |
| 10/02/26 | 07:00:13 | 10 Feb 2026 | | Confirmation of Chief Executive Officer Start Date |
| 05/02/26 | 10:58:56 | 5 Feb 2026 | | Holding(s) in Company |
| 02/02/26 | 07:01:00 | 2 Feb 2026 | | Total Voting Rights |
| 02/02/26 | 07:00:09 | 2 Feb 2026 | | Block listing Interim Review |
| 23/01/26 | 15:21:44 | 23 Jan 2026 | | Director/PDMR Shareholding |
| 02/01/26 | 07:00:05 | 2 Jan 2026 | | Total Voting Rights |
| 23/12/25 | 15:29:27 | 23 Dec 2025 | | Director/PDMR Shareholding |
| 11/12/25 | 13:16:16 | 11 Dec 2025 | | Confirmed Financial Calendar |
| 09/12/25 | 16:01:12 | 9 Dec 2025 | | Director/PDMR Shareholding |
| 09/12/25 | 07:00:10 | 9 Dec 2025 | | Pennon Group CEO Transition Arrangements |
| 01/12/25 | 15:42:35 | 1 Dec 2025 | | EMTN: Publication of Supplementary Prospectus |
| 01/12/25 | 07:00:03 | 1 Dec 2025 | | Total Voting Rights |
| 27/11/25 | 07:00:13 | 27 Nov 2025 | | Half Year Results 2025/26 |
| 21/11/25 | 16:24:18 | 21 Nov 2025 | | Director/PDMR Shareholding |
| 03/11/25 | 07:00:04 | 3 Nov 2025 | | Total Voting Rights |
| 22/10/25 | 13:26:27 | 22 Oct 2025 | | Director/PDMR Shareholding |
| 07/10/25 | 07:00:10 | 7 Oct 2025 | | Pennon appoints new Non-Executive Director |
| 03/10/25 | 14:19:23 | 3 Oct 2025 | | Director/PDMR Shareholding |
| 02/10/25 | 07:00:12 | 2 Oct 2025 | | Pennon Group appoints Keith Haslett as new CEO |
| 01/10/25 | 07:00:09 | 1 Oct 2025 | | Total Voting Rights |
| 26/09/25 | 07:00:12 | 26 Sept 2025 | | Trading Statement |
| 23/09/25 | 16:16:08 | 23 Sept 2025 | | Director/PDMR Shareholding |
| 11/09/25 | 12:09:49 | 11 Sept 2025 | | EMTN Programme: Publication of Final Terms |
| 01/09/25 | 07:00:03 | 1 Sept 2025 | | Total Voting Rights |
| 28/08/25 | 14:44:35 | 28 Aug 2025 | | Director/PDMR Shareholding |
| 22/08/25 | 09:41:49 | 22 Aug 2025 | | EMTN Programme: Publication of Base Prospectus |
| 20/08/25 | 16:15:07 | 20 Aug 2025 | | Director/PDMR Shareholding |
| 01/08/25 | 07:01:01 | 1 Aug 2025 | | Total Voting Rights |
| 01/08/25 | 07:00:10 | 1 Aug 2025 | | Block listing Interim Review |
| 25/07/25 | 15:31:00 | 25 Jul 2025 | | Director/PDMR Shareholding |
| 25/07/25 | 15:30:00 | 25 Jul 2025 | | Director/PDMR Shareholding |
| 24/07/25 | 13:48:00 | 24 Jul 2025 | | Result of AGM |
| 22/07/25 | 16:00:00 | 22 Jul 2025 | | Director/PDMR Shareholding |
| 11/07/25 | 12:03:23 | 11 Jul 2025 | | Susan Davy to retire from the Pennon Group Board |
| 10/07/25 | 07:05:34 | 10 Jul 2025 | | Update on Ofwat investigation |
| 08/07/25 | 16:00:34 | 8 Jul 2025 | | Director/PDMR Shareholding |
| 01/07/25 | 12:04:39 | 1 Jul 2025 | | Director/PDMR Shareholding |
| 01/07/25 | 09:00:00 | 1 Jul 2025 | | Total Voting Rights |
| 26/06/25 | 07:00:08 | 26 Jun 2025 | | Publication of Annual Report and Accounts 2025 |
| 23/06/25 | 10:42:44 | 23 Jun 2025 | | Director/PDMR Shareholding |
| 05/06/25 | 15:09:42 | 5 Jun 2025 | | EMTN: Publication of Supplementary Prospectus |
| 04/06/25 | 10:25:25 | 4 Jun 2025 | | Total Voting Rights |
| 03/06/25 | 07:00:10 | 3 Jun 2025 | | Full Year Results 2024/25 |
| 20/05/25 | 16:36:26 | 20 May 2025 | | Director/PDMR Shareholding |
| 01/05/25 | 07:00:02 | 1 May 2025 | | Total Voting Rights |
