Mosman Oil and Gas Ltd (AIM:MSMN) confirmed it has raised £500,000 in its fully subscribed retail share, bringing its total equity raise to £2.17 million.
The retail offer 2.22 billion new shares, priced at 0.0225p, followed last week's institutional placing.
Proceeds are earmarked to fund the further development of its helium assets in Colorado, including seismic and well test programmes.
"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," said executive chair Carl Dumbrell.
Mosman is now well financed to advance its world-class helium portfolio in Colorado, Dumbrell added.