| 30/09/26 | QHE | 09:50:22 | 30 Sept 2026 | | QHE | Director/PDMR Shareholding | Quantum Helium Limited | RNS |
| 22/09/26 | QHE | 07:15:05 | 22 Sept 2026 | | QHE | Operational and Commercial Update | Quantum Helium Limited | RNS |
| 11/09/26 | QHE | 08:42:41 | 11 Sept 2026 | | QHE | Annual Report and Accounts for Y/E 30 June 2026 | Quantum Helium Limited | RNS |
| 25/08/26 | QHE | 08:36:27 | 25 Aug 2026 | | QHE | Updated Investor Presentation | Quantum Helium Limited | RNS |
| 24/08/26 | QHE | 07:02:01 | 24 Aug 2026 | | QHE | Sagebrush Update. Colorado Drilling Opportunities | Quantum Helium Limited | RNS |
| 03/08/26 | QHE | 07:02:00 | 3 Aug 2026 | | QHE | 3D Seismic and Reprocessing Programme | Quantum Helium Limited | RNS |
| 21/07/26 | QHE | 08:15:39 | 21 Jul 2026 | | QHE | Operational Progress and OTC Markets Application | Quantum Helium Limited | RNS |
| 10/07/26 | QHE | 10:56:56 | 10 Jul 2026 | | QHE | H1 Oil Production Generates Over USD316,000 | Quantum Helium Limited | RNS |
| 01/07/26 | QHE | 12:39:34 | 1 Jul 2026 | | QHE | Share Consolidation Approved & Total Voting Rights | Quantum Helium Limited | RNS |
| 25/06/26 | QHE | 08:10:47 | 25 Jun 2026 | | QHE | A Year of Transformation and Outlook Ahead of EGM | Quantum Helium Limited | RNS |
| 24/06/26 | QHE | 07:47:56 | 24 Jun 2026 | | QHE | Publication of OAK Securities Research Report | Quantum Helium Limited | RNS |
| 15/06/26 | QHE | 07:02:00 | 15 Jun 2026 | | QHE | Successful EPT confirms Helium plus Commercial Oil | Quantum Helium Limited | RNS |
| 04/06/26 | QHE | 08:21:55 | 4 Jun 2026 | | QHE | Q1 2026 Oil Production & Corporate Update | Quantum Helium Limited | RNS |
| 03/06/26 | QHE | 07:51:29 | 3 Jun 2026 | | QHE | Proposed Share Consolidation & Notice of EGM | Quantum Helium Limited | RNS |
| 02/06/26 | QHE | 07:45:38 | 2 Jun 2026 | | QHE | Sagebrush-1 Extended Production Test Update | Quantum Helium Limited | RNS |
| 23/04/26 | QHE | 07:46:37 | 23 Apr 2026 | | QHE | Director/PDMR Shareholding | Quantum Helium Limited | RNS |
| 21/04/26 | QHE | 08:54:22 | 21 Apr 2026 | | QHE | Director/PDMR Shareholding | Quantum Helium Limited | RNS |
| 17/04/26 | QHE | 07:01:00 | 17 Apr 2026 | | QHE | £5 Million Institutional Placing | Quantum Helium Limited | RNS |
| 16/04/26 | QHE | 07:02:00 | 16 Apr 2026 | | QHE | Sagebrush-1 Testing Progress and Leadville Plan | Quantum Helium Limited | RNS |
| 08/04/26 | QHE | 14:03:08 | 8 Apr 2026 | | QHE | Extended Production Test Commences at Sagebrush-1 | Quantum Helium Limited | RNS |
| 01/04/26 | QHE | 07:48:38 | 1 Apr 2026 | | QHE | Sagebrush Operatorship Approved | Quantum Helium Limited | RNS |
| 31/03/26 | QHE | 07:00:11 | 31 Mar 2026 | | QHE | Half-Year Results | Quantum Helium Limited | RNS |
| 23/03/26 | QHE | 07:03:00 | 23 Mar 2026 | | QHE | Strong 2025 Oil Production at Sagebrush | Quantum Helium Limited | RNS |
| 05/03/26 | QHE | 07:32:51 | 5 Mar 2026 | | QHE | Correction: Sagebrush Operatorship to be finalised | Quantum Helium Limited | RNS |
| 05/03/26 | QHE | 07:02:00 | 5 Mar 2026 | | QHE | Sagebrush operatorship finalised. Test to commence | Quantum Helium Limited | RNS |
| 26/02/26 | QHE | 07:01:00 | 26 Feb 2026 | | QHE | Coyote Wash receives formal BIA Approval | Quantum Helium Limited | RNS |
| 09/02/26 | QHE | 12:00:44 | 9 Feb 2026 | | QHE | 3D seismic confirms leadville helium structure | Quantum Helium Limited | RNS |
| 26/01/26 | QHE | 07:03:00 | 26 Jan 2026 | | QHE | BIA Approval of Irrevocable Letter of Credit | Quantum Helium Limited | RNS |
| 08/01/26 | QHE | 07:04:00 | 8 Jan 2026 | | QHE | Director/PDMR Shareholding | Quantum Helium Limited | RNS |
| 02/01/26 | QHE | 10:34:14 | 2 Jan 2026 | | QHE | Director/PDMR Shareholding | Quantum Helium Limited | RNS |
| 23/12/25 | QHE | 07:06:17 | 23 Dec 2025 | | QHE | Year-End Operational Update | Quantum Helium Limited | RNS |
| 19/12/25 | QHE | 07:04:01 | 19 Dec 2025 | | QHE | Sproule: Coyote Wash is a major Helium Resource | Quantum Helium Limited | RNS |
| 15/12/25 | QHE | 08:21:43 | 15 Dec 2025 | | QHE | Sagebrush Resource Update | Quantum Helium Limited | RNS |
| 11/12/25 | QHE | 07:04:01 | 11 Dec 2025 | | QHE | Sagebrush Working Interest and Operational Update | Quantum Helium Limited | RNS |
| 03/12/25 | QHE | 07:48:23 | 3 Dec 2025 | | QHE | Director/PDMR Shareholding | Quantum Helium Limited | RNS |
| 26/11/25 | QHE | 07:01:00 | 26 Nov 2025 | | QHE | Issue of Equity and Total Voting Rights | Quantum Helium Limited | RNS |
| 18/11/25 | QHE | 07:12:03 | 18 Nov 2025 | | QHE | 3D Seismic Acquisition Commences at Sagebrush | Quantum Helium Limited | RNS |
| 13/11/25 | MSMN | 09:27:46 | 13 Nov 2025 | | MSMN | Change of name to Quantum Helium Limited | Mosman Oil and Gas Limited | RNS |
| 10/11/25 | MSMN | 12:00:46 | 10 Nov 2025 | | MSMN | Result of Annual General Meeting | Mosman Oil and Gas Limited | RNS |
| 07/11/25 | MSMN | 09:45:05 | 7 Nov 2025 | | MSMN | Sproule to Verify Coyote Wash Helium Resource | Mosman Oil and Gas Limited | RNS |
| 23/10/25 | MSMN | 11:04:00 | 23 Oct 2025 | | MSMN | Correction: £500,000 Fully Subscribed Retail Offer | Mosman Oil and Gas Limited | RNS |
| 22/10/25 | MSMN | 07:01:00 | 22 Oct 2025 | | MSMN | £500,000 Fully Subscribed Retail Offer | Mosman Oil and Gas Limited | RNS |
| 17/10/25 | MSMN | 09:01:00 | 17 Oct 2025 | | MSMN | Retail Offer | Mosman Oil and Gas Limited | RNS |
| 17/10/25 | MSMN | 08:57:45 | 17 Oct 2025 | | MSMN | £1.67 Million Placing to Advance US Helium Assets | Mosman Oil and Gas Limited | RNS |
| 13/10/25 | MSMN | 07:02:01 | 13 Oct 2025 | | MSMN | Coyote Wash Prospective Helium Resource 1,072 MMcf | Mosman Oil and Gas Limited | RNS |
| 10/10/25 | MSMN | 07:47:58 | 10 Oct 2025 | | MSMN | Notice of AGM and Posting of Circular | Mosman Oil and Gas Limited | RNS |
| 29/09/25 | MSMN | 09:13:53 | 29 Sept 2025 | | MSMN | Appointment of CEO and Board Update | Mosman Oil and Gas Limited | RNS |
| 26/09/25 | MSMN | 07:04:01 | 26 Sept 2025 | | MSMN | Annual Report & Accounts for Year End 30 June 2025 | Mosman Oil and Gas Limited | RNS |
| 24/09/25 | MSMN | 08:30:08 | 24 Sept 2025 | | MSMN | Investor Presentation Available | Mosman Oil and Gas Limited | RNS |
| 22/09/25 | MSMN | 07:04:01 | 22 Sept 2025 | | MSMN | Bonding Approval for Sagebrush and Coyote Wash | Mosman Oil and Gas Limited | RNS |