Mosman Oil and Gas Limited announced the appointment of Carl Dumbrell as an independent Non Executive Director, joining the Board with immediate effect. Carl is a Chartered Accountant in both Australia and the UK who brings over 20 years' experience in taxation and assurance services to the board, working with quoted companies on both the LSE and ASX, predominantly in energy and resources. He is currently a Partner in CDTL in addition to being Director and Company Secretary of Emperor Energy Limited, a Director of Herencia Resources Plc and Chairman of the Kennedy Foundation.

Previously Carl was Partner, Global Head of Mining and Natural Resources at Mazars LLP in London and a Director of ASX listed Oil Basins Limited. The Board has also appointed Nigel Harvey as Chair, effective 1 October 2023, in an independent on executive capacity with Founding Executive Director Andy Carroll now leading the business as CEO, formerly Technical Director, and Carl Dumbrell as Independent Non Executive Director. The management team continues to include Jarrod White (CFO), Howard McLaughlin (US Operations Manager) leading the group's oil and gas activities in Texas, consultant geologist Dr Julie Daws working on the group's helium hydrogen and hydrocarbon exploration in the Northern Territory, and Nicholas Marshall (Company Secretary).

The Board wishes to acknowledge and thank the departing Chair and founding Director John Barr for his many years of service to the Company and wishes him well with his future endeavours. The Board also notes that Mr. Carroll remains on his current flexible executive services contract, that its new Chair is non executive and that other costs have been optimised as it focusses on regrouping and rebuilding the Company's operations as self sustainably as practicable. Carl Francis Dumbrell, aged 47, currently holds or has held the following directorships and partnerships in the last five years: Current directorships: Emperor Energy Limited; OBL Backreef No 10 Pty Ltd; Emperor Resources Pty Ltd; Shelf Oil Pty Ltd; Backreef Energy Pty Ltd; C First Holdings Pty Ltd; Consumer First Pty Ltd; C First Investments Pty Ltd; Chocolate Mobile Limited; C&W Perry Pty Ltd; CDTL International Limited; ZDL Holdings Pty Ltd; ZEN88 Pty Ltd; St Michaels Golf Club Limited; SM Range Operations Pty Ltd. and Herencia Resources plc.

Previous directorships in the last five years: KBDavies Pty Ltd; Dr Roebucks Aust Pty Ltd. and No Issues Pty Ltd.