Mosman Oil & Gas Regulatory News (MSMN)

15 December 2014

Mosman Oil and Gas Limited

("Mosman" or the "Company")

Update on takeover proposal for

MEO Australia Limited

The Directors of Mosman Oil and Gas Limited ("Mosman" or the "Company") (AIM: MSMN), the New Zealand and Australia focussed oil exploration and development company, note the response released today on the ASX by the directors of MEO Australia Limited ("MEO") to the proposed takeover offer to acquire 100% of the fully paid ordinary shares in the issued capital of MEO (the "Proposal").

The MEO directors have evaluated the approach and consider the Mosman Proposal to be inferior to the proposed merger with Neon Energy Limited ("Neon") announced on 5 November 2014 ("Neon Merger").

John W Barr, Executive Chairman of Mosman commented: "The Mosman Directors believe that there is a strong possibility that the proposed merger between MEO and Neon will not occur, and that the takeover bid affords the MEO shareholders a viable alternative."

Enquiries:

Updates on the Company's activities are regularly posted on its website www.mosmanoilandgas.com

About Mosman

Mosman (AIM: MSMN) is an Australia and New Zealand focused oil exploration and development company with a strategy to build a sustainable mid-tier oil and gas business by acquisition and organic growth.

Currently, Mosman has a total of ten permits or accepted permit applications in New Zealand and Australia.

Petroleum Creek Project, New Zealand

Mosman owns 100% of permit PEP 38526, the Petroleum Creek Project, which is a 143.6 sq. km low cost onshore exploration project located near Greymouth on the South Island in the southern extension of the proven Taranaki oil system. The project has a Mean Unrisked Recoverable Prospective Resource of 26.6 million barrels. In the first month of drilling, oil was discovered at Cross Roads-1 well which declared an Oil Discovery in June 2014 and at Crestal-1 which declared an Oil Discovery in July 2014. In H2 2014, the focus is on the appraisal of existing discoveries and additional exploration.

Taramakau, Murchison and East Coast Permits (New Zealand)

These permits were granted to Mosman on 9 December 2014 as part of the 2014 Block Offer.

Officer Basin Project, Australia (Application)

Mosman has a 25% investment in the Officer Basin Project, a 22,527 sq. km large land holding with significant exploration potential, which lies in one of the more explored parts of the Basin with road access. The project area is in the Western Australian part of the Officer Basin and offers both conventional and unconventional potential with hydrocarbon shows reported and all elements of a petroleum system are present.

Amadeus Basin Projects, Australia

Mosman owns 100% of two granted permits and one application in the Amadeus Basin in Central Australia which total of 5,458 sq. km. The Amadeus Basin is considered one of the most prospective onshore areas in the Northern Territory of Australia for both conventional and unconventional oil and gas, and hosts the producing Mereenie, Palm Valley and Surprise fields.

Otway Basin Project, Australia

Mosman owns 30% of VIC/P62 in the Otway Basin. The permit was recently renewed and is in relatively shallow water. The 70% permit holder funded a 3D seismic survey in 2013. The results of the 3D seismic survey are now being integrated in to a geological model to allow identification and ranking of drilling targets. Within the Otway Basin there is commercial production both onshore and offshore.