£500,000 Fully Subscribed Retail Offer to Advance US Helium Projects
Mosman Oil and Gas Limited (AIM: MSMN), advancing helium, hydrogen and hydrocarbon projects in the USA, is pleased to announce that, further to its announcement of 17 October 2025, the Company has successfully raised £500,000 (before expenses) through a fully subscribed Retail Offer of 2,222,222,222 new ordinary shares of no par value each (“Retail Offer Shares”) at an issue price of 0.0225p per share (the “Issue Price”).
The Retail Offer, conducted via CMC CapX, provided eligible retail shareholders with the opportunity to participate on the same terms as the institutional placing announced on 17 October 2025.
Together with the £1.67 million placing, Mosman has now raised a total of £2.17 million (before expenses).
Carl Dumbrell, Executive Chairman of Mosman Oil and Gas, commented: “We are delighted with the strong response from our retail shareholders, whose continued support and confidence in Mosman’s plans has resulted in a fully subscribed offer. Alongside the recent £1.67 million placing, this brings total funds raised to £2.17 million, leaving Mosman well financed to advance our world-class helium portfolio in Colorado. We now look to a period of significant news flow including the forthcoming 3D seismic and extended well test programmes at Sagebrush, as well as continued development activity at Coyote Wash. With strong cash backing and two high-quality helium assets, Mosman is in a great position to deliver meaningful development milestones through the coming months.”
Admission to AIM and Total Voting Rights
The Retail Offer is conditional, inter alia, upon the Retail Offer Shares being admitted to trading on AIM. Application has been made to the London Stock Exchange for the Retail Offer Shares, which will rank pari passu with the Company’s existing issued ordinary shares, to be admitted to trading on AIM, with dealings expected to commence at 8:00 a.m. on 27 October 2025.
Following the issue of the Retail Offer Shares, the Company’s total voting rights will comprise 32,281,788,109 ordinary shares of no par value, and the Company does not hold any shares in treasury. The above figure may be used by shareholders as the denominator for calculating notifiable interests in the Company.
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 publication via Regulatory Information Service (‘RIS’), this information is now in the public domain
Enquiries:
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Mosman Oil & Gas Limited Carl Dumbrell Executive Chairman |

