Mosman Oil & Gas Regulatory News (MSMN)

1 June 2022

Mosman Oil and Gas Limited

("Mosman" or the "Company")

Corporate Presentation and Operations Update

Mosman Oil and Gas Limited (AIM: MSMN) the oil exploration, development, and production

company, advises that it is presenting at the following conferences in June/July 2022.

- PESGB/SEAPEX - Asia Pacific E&P Conference in London on 29-30 June 2022

- Proactive One2One Investor Forum at The Chesterfield Hotel in Mayfair on 6 July 2022

As an integral part of these presentations a revised and updated Corporate Presentation will be posted on the Mosman website beforehand.

Net Production attributable to Mosman for the three months ending 31 March 2022 was 11,756 boe. The next Quarterly Production Update is expected to be announced in July.

Market Abuse Regulation (MAR) Disclosure

The information contained within this announcement is deemed by the Company to constitute inside information as stipulated under the Market Abuse Regulations (EU) No. 596/2014 ('MAR') which has been incorporated into UK law by the European Union (Withdrawal) Act 2018. Upon the publication of this announcement via Regulatory Information Service ('RIS'), this inside is now considered to be in the public domain.

Enquiries:

Updates on the Company's activities are regularly posted on its website:

www.mosmanoilandgas.com

Notes to editors

Mosman (AIM:MSMN) is an oil exploration, development, and production company with projects in the US and Australia. Mosman's strategic objectives remain consistent: to identify opportunities which will provide operating cash flow and have development upside, in conjunction with progressing exploration of existing exploration permits.

The Company has seven projects in the US: Stanley, Greater Stanley, Livingston, Winters, Challenger and Champion in East Texas and Arkoma in Oklahoma in addition to exploration projects in the Amadeus Basin in Central Australia.