Quantum Helium Limited engages in the exploration, development and production of helium, hydrogen and hydrocarbons, with operations in the United States and Australia and a royalty interest in the Amadeus Basin, Central Australia. Headquartered in the United Kingdom, Quantum Helium focuses on identifying high-value opportunities to generate operating cash flow while pursuing exploration upside, and has evolved from its former Mosman Oil & Gas Limited identity to emphasize helium-centric assets and related resources. The company’s product slate encompasses helium exploration and production, hydrogen and associated hydrocarbons, with ancillary interests in royalty income and staged development opportunities across its portfolio. Primary activities include high-resolution seismic acquisition, resource verification and formalized testing programs to unlock certified helium resources, alongside ongoing evaluation of upstream opportunities and strategic partnerships to accelerate development and commercialisation in priority basins. The latest corporate changes include a name rebranding to Quantum Helium Limited in 2025, ongoing strategic realignment toward helium-focused growth, and accelerated advancement of Sagebrush and Coyote Wash projects with independent resource validation and planned production testing, supported by expanded working interests and secured long-lead items. The company targets energy and industrial gas markets that require helium and related gases, offering a pipeline from exploration through to production and potential royalty streams, with activities overseen by a management team aligned to both Western Hemisphere assets and Australian exploration opportunities. Quantum Helium maintains corporate disclosures and investor communications through its AIM listing and corporate website, detailing project status, development timelines, and resource estimates to shareholders and prospective partners.