5 February 20145

Mosman Oil and Gas Limited

("Mosman" or the "Company")

Director Dealing

Mosman Oil and Gas Limited (AIM: MSMN) the New Zealand and Australia focussed oil exploration and development company today announces that it was notified on 4 February that Mr Andrew Carroll a director of the Company bought 200,000 ordinary shares in the Company ("the Ordinary Shares") at a price of 5.025 pence per Ordinary share on 4 February. In addition on February 5 the Company was notified that Mr John W Barr a director of the Company bought 250,000 Ordinary Shares at a price of 5.31 pence per Ordinary share on 4 February.

Following this transaction Mr Carroll has a beneficial interest in 11,050,000 Ordinary Shares representing approximately 12.04% of the total voting rights in the Company and Mr John W Barr has a beneficial interest in 10,350,001 Ordinary Shares representing approximately 11.27% of the total voting rights in the Company.

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.

Taramakau, Murchison and East Coast Permits (New Zealand)

These permits were granted to Mosman in 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.