7 January 2019

Mosman Oil and Gas Limited

("Mosman" or the "Company")

Stanley-2 well update

Mosman Oil and Gas Limited (AIM: MSMN) the oil exploration, development and production company, announces that it has been informed by its Strategic Alliance partner Baja Oil & Gas, LLC ("Baja") that the spudding of the planned Stanley-2 well has been delayed principally as a result of poor weather in the region.

Market Abuse Regulation (MAR) Disclosure

Certain information contained in this announcement would have been deemed inside information for the purposes of Article 7 of Regulation (EU) No 596/2014 until the release of this announcement.

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