13 May 2015

Mosman Oil and Gas Limited

Supplementary Bidders Statement

The Directors of Mosman Oil and Gas Limited ("Mosman" or the "Company") (AIM: MSMN) refer to the announcements made by the Company on 28 January 2015, 16 March 2015, 1 May 2015 and 5 May 2015 in relation to Mosman's off-market takeover bid to acquire 100% of the fully paid ordinary shares in the issued capital of ASX listed MEO Australia Limited ("MEO") ("Offer").

Mosman has today lodged a supplementary bidder's statement (the "Supplementary") in respect of the Offer with ASIC.  The Supplementary will be despatched to all MEO Shareholders and, amongst other things, details the variation and the extension of the Offer, as announced on 1 May 2015 and 5 May 2015.

Please click here for link to the Supplementary:   http://mosmanoilandgas.com/sites/mosmanoilandgas.com/files/files/Supplementary_Bidders_Statement.PDF

As at 12 May 2015 Mosman has acceptances for 16,227,592 shares which represent approximately 2.162% of the issued capital of MEO.

This RNS announcement should not be utilised by the shareholders of MEO in making any decision on whether or not to accept or decline the Offer and is solely being released for AIM disclosure purposes.

The Chairman of Mosman, John W Barr, said: "The Mosman Directors are of the opinion that the variations, together with the recent share placement directly answer many of the issues raised by MEO in their Target's Statement, and Supplementary Target's Statements. The Offer has now been declared unconditional."

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 sq. km low cost onshore exploration project located near Greymouth on the South Island in the southern extension of the proven Taranaki oil system.

Murchison Permit (New Zealand)

Granted in December 2014 Murchison has become a focus after completion of an independent prospective resource report. Exploration is planned for the second half of 2015.

Taramakau, and East Coast Permits (New Zealand)

These permits were granted in December 2014. Exploration is currently in the advanced planning stage.

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 into a geological model to allow identification and ranking of drilling targets. Within the Otway Basin there is commercial production both onshore and offshore.