EP 145 Progress Report

Mosman Oil and Gas Limited (AIM: MSMN) the hydrocarbon, helium and hydrogen exploration, development, and production company, provides an update on its EP145 project in Australia.

Mosman and Greenvale Gas Ltd ("GRV"), a subsidiary of Greenvale Pty Ltd (ASX:GRV), have agreed to amend the Farmin Agreement so that the right for either party to terminate the agreement is changed from 31 January to 30 March 2024. This is because the approval process is progressing but not yet concluded. The amendment also clarifies that Mosman will pay any government costs in the interim period, and GRV will reimburse these costs after Completion.

As previously advised, Completion of the Farmin Agreement announced in October 2023 is subject to government approval of the proposed change of Operator and transfer of interest. The farminee, GRV has advised that they have received the Stamp Duty assessment and paid the amount due. The next step is Ministerial approval, which is expected to proceed now that stamp duty has been paid. The Company is not in control of the timing of Ministerial approval, but based on progress so far anticipates Completion to occur in the near future.

Andy Carroll, CEO of Mosman commented: "This is a sensible minor amendment given the approval process is progressing. We are still on track to acquire seismic in 2024 and then drill in 2025 to test the helium, hydrogen and hydrocarbon potential in this area."