| 09:15:17 | 09:15:17 | 18 Sept 2026 | | Form 8.3 - Stefan Barden - Replacement | RNS |
| 16/09/26 | 07:00:03 | 16 Sept 2026 | | Rejection of Brave Bison’s Fourth Offer | RNS |
| 15/09/26 | 18:26:18 | 15 Sept 2026 | | Form 8.3 - System1 Group - Bainsville Commercial | RNS |
| 14/09/26 | 15:13:13 | 14 Sept 2026 | | Form 8.3 - System1 Group - Bainsville Commercial | RNS |
| 11/09/26 | 17:15:00 | 11 Sept 2026 | | Form 8.3 - System1 Group - Bainsville Commercial | RNS |
| 10/09/26 | 07:05:00 | 10 Sept 2026 | | Response Document Publication, Shareholder Support | RNS |
| 10/09/26 | 07:00:02 | 10 Sept 2026 | | 5M FY27 Trading Update | RNS |
| 28/08/26 | 07:00:03 | 28 Aug 2026 | | Unequivocal Rejection of Offer from Brave Bison | RNS |
| 27/08/26 | 07:00:05 | 27 Aug 2026 | | System1 launches Test Your Ad Screen | RNS |
| 25/08/26 | 17:31:17 | 25 Aug 2026 | | Annual Report and Notice of AGM | RNS |
| 12/08/26 | 17:47:44 | 12 Aug 2026 | | Form 8.3 - System1 Group - Bainsville Commercial | RNS |
| 11/08/26 | 17:37:23 | 11 Aug 2026 | | Form 8.3 - System1 Group - Bainsville Commercial | RNS |
| 03/08/26 | 17:15:00 | 3 Aug 2026 | | Form 8.3 - System1 Group - Bainsville Commercial | RNS |
| 31/07/26 | 11:29:59 | 31 Jul 2026 | | Unequivocal Rejection of Offer from Brave Bison | RNS |
| 29/07/26 | 17:15:00 | 29 Jul 2026 | | Form 8.3 - System1 Group plc - Polo Capital | RNS |
| 24/07/26 | 11:58:50 | 24 Jul 2026 | | Form 8.3 System1 Group plc - Stefan Barden | RNS |
| 24/07/26 | 09:15:55 | 24 Jul 2026 | | Form 8.3 - System1 Group plc - Sarah Kearon | RNS |
| 21/07/26 | 12:25:00 | 21 Jul 2026 | | Form 8.3 - System1 Group - Bainsville Commercial | RNS |
| 20/07/26 | 07:00:06 | 20 Jul 2026 | | Form 8 OPD - System1 Group plc | RNS |
| 17/07/26 | 17:46:51 | 17 Jul 2026 | | Clarification statement | RNS |
| 17/07/26 | 07:00:03 | 17 Jul 2026 | | Reiteration of unequivocal rejection | RNS |
| 14/07/26 | 17:32:07 | 14 Jul 2026 | | Form 8.3 - System1 Group plc | RNS |
| 13/07/26 | 13:24:27 | 13 Jul 2026 | | Form 8 (OPD) - System1 Group plc | RNS |
| 13/07/26 | 07:05:00 | 13 Jul 2026 | | Response to announcement by Brave Bison Group plc | RNS |
| 08/07/26 | 16:15:00 | 8 Jul 2026 | | Dividend Timetable | RNS |
| 08/07/26 | 07:00:04 | 8 Jul 2026 | | Final Results | RNS |
| 02/07/26 | 07:00:03 | 2 Jul 2026 | | Notice of Investor Presentation | RNS |
| 01/05/26 | 16:30:01 | 1 May 2026 | | Holding(s) in Company | RNS |
| 21/04/26 | 07:01:01 | 21 Apr 2026 | | Relationship Agreement with Brave Bison | RNS |
| 21/04/26 | 07:00:05 | 21 Apr 2026 | | Q4 and Full Year Trading Update | RNS |
| 09/04/26 | 07:00:08 | 9 Apr 2026 | | Launch of next evolution of Test Your Ad platform | RNS |
| 30/03/26 | 16:30:01 | 30 Mar 2026 | | Holding(s) in Company | RNS |
| 30/03/26 | 15:30:00 | 30 Mar 2026 | | Director/PDMR Shareholding | RNS |
| 16/03/26 | 07:00:11 | 16 Mar 2026 | | Trading Update | RNS |
| 05/03/26 | 15:15:00 | 5 Mar 2026 | | Director/PDMR Shareholding | RNS |
| 03/03/26 | 17:15:00 | 3 Mar 2026 | | Holding(s) in Company | RNS |
| 03/03/26 | 16:06:34 | 3 Mar 2026 | | Board Change | RNS |
| 02/03/26 | 13:39:29 | 2 Mar 2026 | | Shareholder update & PDMR Dealing | RNS |
| 02/03/26 | 07:00:13 | 2 Mar 2026 | | Directorate change | RNS |
| 30/01/26 | 13:00:01 | 30 Jan 2026 | | Board Committee and Change of Role Update | RNS |
| 20/01/26 | 07:00:07 | 20 Jan 2026 | | Trading Update | RNS |
| 12/01/26 | 16:45:01 | 12 Jan 2026 | | Appointment of Joint Corporate Broker | RNS |
| 02/12/25 | 07:00:09 | 2 Dec 2025 | | Interim Results | RNS |
| 20/11/25 | 11:45:00 | 20 Nov 2025 | | Holding(s) in Company | RNS |
| 24/10/25 | 15:28:28 | 24 Oct 2025 | | Holding(s) in Company | RNS |
| 22/10/25 | 07:00:08 | 22 Oct 2025 | | Trading Update | RNS |
| 14/10/25 | 09:16:17 | 14 Oct 2025 | | Capital Markets Day | RNS |
| 06/10/25 | 15:30:01 | 6 Oct 2025 | | Director/PDMR Shareholding | RNS |
| 30/09/25 | 07:00:26 | 30 Sept 2025 | | Director/PDMR Shareholding - replacement | RNS |
| 29/09/25 | 17:48:01 | 29 Sept 2025 | | Director/PDMR Shareholding | RNS |
