18 Sept 2026, 16:42
Meetings & Governance—
Announcement history available from 1 August 2025
| Date / Time | Heading | Type | MS | Report Codes | |
|---|---|---|---|---|---|
| 18 Sept 2026, 16:42 | 2026 AGM Letter of Access, Notice of Meeting and Proxy | Meetings & Governance | — | 08001, 08004, 16002 | |
| 18 Sept 2026, 16:36 | Audited Financial Statements and Annual Report | Financial Results | — | 03001, 03002, 03011, 03012, 03013, 03020 | |
| 18 Sept 2026, 16:31 | Appendix 4G and Corporate Governance Statement | Company Administration | — | 03024, 03025 | |
| 17 Sept 2026, 09:36 | OMA Awarded Prospective Taroom Trough Acreage - Inc Area 63% | Company Update | MS | 11001 | |
| 7 Sept 2026, 09:31 | Drilling at Canyon-4, Extends OMAs Play-Defining Campaign | Company Update | MS | 11001 | |
| 4 Sept 2026, 17:10 | S&P DJI Announces September 2026 Quarterly Rebalance | Other | MS | — | |
| 1 Sept 2026, 17:29 | Change in substantial holding for EXR | Other | — | — | |
| 24 Aug 2026, 09:20 | Major Oil & Gas Extension for OMA in Eastern Taroom Trough | Company Update | MS | 11001 | |
| 17 Aug 2026, 09:31 | Managing Director & CEO Annual Incentive Package Review | Company Administration | — | 12008 | |
| 7 Aug 2026, 09:01 | Canyon-3 Drilling Update | Company Update | MS | 11001 | |
| 31 July 2026, 08:36 | OMA's Play-Defining Campaign Commences Drilling at Canyon-3 | Company Update | MS | 11001 | |
| 28 July 2026, 08:37 | Quarterly Activities Report and Appendix 5B | Quarterly Reports | MS | 04004, 05004 | |
| 21 July 2026, 09:13 | OMA Commences Transformational Taroom Trough Drill Program | Company Update | MS | 11001 | |
| 10 July 2026, 17:12 | Change of Director's Interest Notice - SH | Director Interests | — | 02009 | |
| 10 July 2026, 17:10 | Change of Director's Interest Notice - PS | Director Interests | — | 02009 | |
| 10 July 2026, 17:09 | Change of Director's Interest Notice - AH | Director Interests | — | 02009 | |
| 10 July 2026, 17:04 | Change of Director's Interest Notice - QF | Director Interests | — | 02009 | |
| 10 July 2026, 17:03 | Change of Director's Interest Notice - MH | Director Interests | — | 02009 | |
| 7 July 2026, 17:55 | Cleansing notice under section 708A of the Corporations Act | Securities Administration | — | 06018 | |
| 7 July 2026, 17:53 | Application for quotation of securities - OMA | Securities Administration | — | 06020 | |
| 7 July 2026, 17:48 | Application for quotation of securities - OMA | Securities Administration | — | 06020 | |
| 25 June 2026, 09:39 | Change in substantial holding - Ilwella | Substantial Holders | — | 02002 | |
| 25 June 2026, 09:36 | Change in substantial holding - Tri-Star | Substantial Holders | — | 02002 | |
| 25 June 2026, 09:33 | Change of Director's Interest Notice - QF | Director Interests | — | 02009 | |
| 25 June 2026, 09:31 | Cleansing notice under section 708A of the Corporations Act | Securities Administration | — | 06018 | |
| 25 June 2026, 09:30 | Application for quotation of securities - OMA | Securities Administration | — | 06020 | |
| 25 June 2026, 09:02 | Investor Presentation - Unlocking a New Basin-Scale Play | Presentations | MS | 03026 | |
| 19 June 2026, 14:55 | Results of Meeting | Meetings & Governance | — | 08003 | |
| 1 June 2026, 16:46 | Change of Director's Interest Notice - QF | Director Interests | — | 02009 | |
| 19 May 2026, 09:13 | OMA Commences Civil Works in Advance of 26/27 Drill Program | Company Update | — | 11001 | |
| 12 May 2026, 17:37 | EGM Access Letter, Notice of Meeting and Proxy | Meetings & Governance | — | 08004, 08007 | |
| 8 May 2026, 16:47 | Change of Director's Interest Notice - SH | Director Interests | — | 02009 | |
| 8 May 2026, 16:47 | Change of Director's Interest Notice - PS | Director Interests | — | 02009 | |
| 8 May 2026, 16:39 | Change of Director's Interest Notice - AH | Director Interests | — | 02009 | |
| 8 May 2026, 16:37 | Change of Director's Interest Notice - QF | Director Interests | — | 02009 | |
| 8 May 2026, 16:35 | Change of Director's Interest Notice - MH | Director Interests | — | 02009 | |
| 8 May 2026, 16:34 | Change of Director's Interest Notice - TB | Director Interests | — | 02009 | |
| 5 May 2026, 08:14 | Change in substantial holding - Ilwella | Substantial Holders | — | 02002 | |
| 5 May 2026, 08:13 | Change in substantial holding - Tri-Star | Substantial Holders | — | 02002 | |
| 1 May 2026, 17:16 | Notification regarding unquoted securities - OMA | Securities Administration | — | 06021 | |
| 1 May 2026, 17:03 | Cleansing notice under section 708A of the Corporations Act | Securities Administration | — | 06018 | |
| 1 May 2026, 17:00 | Application for quotation of securities - OMA | Securities Administration | — | 06020 | |
| 1 May 2026, 16:54 | Application for quotation of securities - OMA | Securities Administration | — | 06020 | |
| 1 May 2026, 09:46 | Cleansing notice under section 708A of the Corporations Act | Securities Administration | — | 06018 | |
| 1 May 2026, 09:43 | Application for quotation of securities - OMA | Securities Administration | — | 06020 | |
| 29 Apr 2026, 08:46 | Quarterly Activities Report and Appendix 5B | Quarterly Reports | MS | 04003, 05003 | |
| 23 Apr 2026, 10:13 | Proposed issue of securities - OMA | Securities Administration | — | 06013 | |
| 23 Apr 2026, 10:13 | Proposed issue of securities - OMA | Securities Administration | — | 06013 | |
| 23 Apr 2026, 10:13 | OMA Raise A$60m to Fund Upgraded 26/27 Taroom Trough Program | Capital Raising | MS | 03026, 06003, 09014 | |
| 21 Apr 2026, 08:54 | Trading Halt | Trading Halt / Suspension | MS | 09007 |