| 01/10/26 | SEI | 18:00:00 | 1 Oct 2026 | | SEI | PEL90 Participating Interest Exchange with Chevron | Sintana Energy Inc | RNS |
| 10/09/26 | SEI | 07:05:01 | 10 Sept 2026 | | SEI | KON-16: Definitive Transaction Documents Executed | Sintana Energy Inc | RNS |
| 03/09/26 | SEI | 10:20:32 | 3 Sept 2026 | | SEI | TotalEnergies Becomes Operator of PEL 83 | Sintana Energy Inc | RNS |
| 27/08/26 | SEI | 07:00:03 | 27 Aug 2026 | | SEI | Interim Results for the 3 months to 30 June 2026 | Sintana Energy Inc | RNS |
| 20/08/26 | SEI | 14:00:00 | 20 Aug 2026 | | SEI | Portfolio Update – Strategic Investment | Sintana Energy Inc | RNS |
| 10/08/26 | SEI | 07:00:08 | 10 Aug 2026 | | SEI | Broker Appointment | Sintana Energy Inc | RNS |
| 10/08/26 | SEI | 07:00:07 | 10 Aug 2026 | | SEI | Result of AGM and Management Update Presentation | Sintana Energy Inc | RNS |
| 22/07/26 | SEI | 07:00:03 | 22 Jul 2026 | | SEI | Shareholder Presentation via Investor Meet Company | Sintana Energy Inc | RNS |
| 21/07/26 | SEI | 07:00:01 | 21 Jul 2026 | | SEI | Latin-America Updates | Sintana Energy Inc | RNS |
| 02/07/26 | SEI | 07:00:03 | 2 Jul 2026 | | SEI | Mid-Year Operational and Corporate Update | Sintana Energy Inc | RNS |
| 30/06/26 | SEI | 07:05:01 | 30 Jun 2026 | | SEI | Exercise of Restricted Share Units | Sintana Energy Inc | RNS |
| 30/06/26 | SEI | 07:00:07 | 30 Jun 2026 | | SEI | Notice of Annual and Special Meeting | Sintana Energy Inc | RNS |
| 12/06/26 | SEI | 07:00:01 | 12 Jun 2026 | | SEI | Exercise of Options | Sintana Energy Inc | RNS |
| 28/05/26 | SEI | 15:00:00 | 28 May 2026 | | SEI | Exercise of Options | Sintana Energy Inc | RNS |
| 28/05/26 | SEI | 07:00:06 | 28 May 2026 | | SEI | Closing of Fundraise | Sintana Energy Inc | RNS |
| 26/05/26 | SEI | 07:00:16 | 26 May 2026 | | SEI | TSX-V Approval and PDMR Dealing | Sintana Energy Inc | RNS |
| 18/05/26 | SEI | 07:01:00 | 18 May 2026 | | SEI | Result of Fundraise | Sintana Energy Inc | RNS |
| 18/05/26 | SEI | 07:00:03 | 18 May 2026 | | SEI | Proposed Offering of Common Shares | Sintana Energy Inc | RNS |
| 15/05/26 | SEI | 07:00:02 | 15 May 2026 | | SEI | Interim Results for the 3 months to 31 March 2026 | Sintana Energy Inc | RNS |
| 11/05/26 | SEI | 07:00:05 | 11 May 2026 | | SEI | Exercise of Options | Sintana Energy Inc | RNS |
| 30/04/26 | SEI | 14:22:37 | 30 Apr 2026 | | SEI | Annual Results | Sintana Energy Inc | RNS |
| 24/04/26 | SEI | 07:00:01 | 24 Apr 2026 | | SEI | Exercise of Options | Sintana Energy Inc | RNS |
| 14/04/26 | SEI | 15:20:29 | 14 Apr 2026 | | SEI | Intention to list on the NSX | Sintana Energy Inc | RNS |
| 30/03/26 | SEI | 07:00:12 | 30 Mar 2026 | | SEI | Portfolio Updates | Sintana Energy Inc | RNS |
| 27/03/26 | SEI | 07:00:05 | 27 Mar 2026 | | SEI | Exercise of Options | Sintana Energy Inc | RNS |
| 26/03/26 | SEI | 11:26:38 | 26 Mar 2026 | | SEI | Sintana Announces Amendments to its By-Laws | Sintana Energy Inc | RNS |
| 18/03/26 | SEI | 08:34:46 | 18 Mar 2026 | | SEI | PEL87 Extension Granted | Sintana Energy Inc | RNS |
| 13/03/26 | SEI | 16:42:09 | 13 Mar 2026 | | SEI | Director/PDMR Shareholding - Replacement | Sintana Energy Inc | RNS |
| 13/03/26 | SEI | 15:02:21 | 13 Mar 2026 | | SEI | Director/PDMR Shareholding | Sintana Energy Inc | RNS |
| 03/03/26 | SEI | 07:00:09 | 3 Mar 2026 | | SEI | Commencement of 3D seismic acquisition | Sintana Energy Inc | RNS |
| 19/02/26 | SEI | 11:00:01 | 19 Feb 2026 | | SEI | Director/PDMR Shareholding | Sintana Energy Inc | RNS |
| 16/02/26 | SEI | 17:13:53 | 16 Feb 2026 | | SEI | Director/PDMR Shareholding | Sintana Energy Inc | RNS |
| 04/02/26 | SEI | 07:00:09 | 4 Feb 2026 | | SEI | VMM-37 Resolution | Sintana Energy Inc | RNS |
| 21/01/26 | SEI | 07:00:09 | 21 Jan 2026 | | SEI | Portfolio Update – Walvis Basin Expansion | Sintana Energy Inc | RNS |
| 12/01/26 | SEI | 07:00:09 | 12 Jan 2026 | | SEI | MI 61-101 Disclosure | Sintana Energy Inc | RNS |
| 06/01/26 | SEI | 07:00:07 | 6 Jan 2026 | | SEI | Grant of RSUs & Issue of Shares | Sintana Energy Inc | RNS |
| 23/12/25 | SEI | 07:00:07 | 23 Dec 2025 | | SEI | Admission to AIM & First Day of Dealings | Sintana Energy Inc | RNS |
| 18/12/25 | | 11:24:46 | 18 Dec 2025 | | — | Publication of Admission Document | Sintana Energy Inc | RNS |
| 09/12/25 | | 07:00:09 | 9 Dec 2025 | | — | Rule 2.9 Announcement | Sintana Energy Inc | RNS |
| 04/11/25 | | 07:00:13 | 4 Nov 2025 | | — | An update letter to shareholders | Sintana Energy Inc | RNS |
| 03/11/25 | | 17:31:05 | 3 Nov 2025 | | — | Form 8.3 - Sintana Energy Inc | Sintana Energy Inc | RNS |
| 03/11/25 | | 10:48:43 | 3 Nov 2025 | | — | Form 8 (OPD) - Sintana Energy Inc. | Sintana Energy Inc | RNS |
| 28/10/25 | | 17:06:03 | 28 Oct 2025 | | CEG | Form 8 (OPD) Challenger Energy Group | Sintana Energy Inc | RNS |
| 23/10/25 | | 14:55:50 | 23 Oct 2025 | | CEG | Form 8 (OPD) (Challenger Energy Group plc) | Sintana Energy Inc | RNS |
| 09/10/25 | | 07:00:08 | 9 Oct 2025 | | CEG | Recommended All Share Offer for Challenger Energy | Sintana Energy Inc | RNS |