03 August 2026

Quantum Helium Limited

("Quantum" or the "Company")

Quantum's 3D Seismic and Reprocessing Programme Defines Multi-Year Activity Pipeline

Technical evaluation delivers a growing portfolio of near-term and high-impact helium and oil exploration opportunities.

Quantum Helium Limited (AIM: QHE) is pleased to announce the results of its comprehensive geological and geophysical evaluation programme across the Sagebrush, Coyote Wash and other nearby areas.

Over the past twelve months, the Company has completed high-resolution 3D seismic acquisition, together with the reprocessing and reinterpretation of all available historic seismic data, and a comprehensive review of historic drilling, wireline logs and production data, supported by integrated geological and geophysical evaluation across its Colorado acreage. This work has significantly enhanced Quantum's understanding of the basin and transformed the portfolio from two established projects into a growing portfolio of future helium and oil exploration opportunities

Highlights

·      Comprehensive interpretation of Quantum's high-resolution 3D seismic and careful reprocessing of older 3D programs has significantly enhanced understanding of both the Sagebrush and Coyote Wash projects.

·      Technical evaluation has transformed Quantum's Colorado acreage from two established projects into a growing portfolio of future drilling opportunities.

·      Two lower-risk drilling candidates identified as potential near-term wells, with drilling targeted within approximately the next 12 months, subject to permitting, and operational priorities.

·      Three additional high-impact exploration prospects have been identified, representing substantially larger helium and oil opportunities for future drilling.

·      Ongoing geological evaluation continues to generate additional exploration concepts across Quantum's Colorado acreage, providing further long-term growth potential.

·      Confirms Sagebrush and Coyote Wash as a genuine multi-year exploration and development portfolio rather than standalone projects.

·      Supports Quantum's strategy of building a long-term inventory of drilling opportunities while progressing commercial development of the Sagebrush helium discovery.

A Step Change in Technical Understanding

When Quantum assembled its Colorado portfolio, the Company's understanding of the acreage was based primarily on historic drilling information, legacy seismic datasets and a limited number of recognised prospects.

Since then, Quantum has undertaken one of the most comprehensive technical programmes completed across its acreage, including acquisition of high-resolution 3D seismic, advanced seismic processing of existing data as well as detailed geological interpretation and integration of historical well and production data.

The programme has confirmed the integrity of the known helium-bearing structures at Sagebrush and Coyote Wash, refined the Company's understanding of existing discoveries and, importantly, identified multiple additional drilling opportunities across the portfolio.

This work represents a significant step forward in the Company's technical understanding of its Colorado acreage and provides a substantially stronger foundation for future exploration, appraisal and development activities.

Building a Long-Term Growth Portfolio

The Company's objective has not simply been to identify individual drilling prospects, but to establish a sustainable portfolio of exploration and development opportunities capable of supporting long-term growth.

The identified opportunities have been prioritised by Quantum's technical team following detailed geological and geophysical evaluation. Prospects were ranked according to geological confidence, seismic definition, commercial potential and operational considerations, resulting in the early identification of two lower-risk near-term drilling candidates and three higher-impact follow-on exploration candidates.

The Company believes the two lower-risk drilling candidates represent an attractive starting point for the next phase of exploration, with the potential to establish near-term production and cash flow while supporting the continued advancement of Quantum's broader helium and oil growth strategy. Subject to permitting and operational priorities, one or both of these opportunities could be advanced to drilling within approximately the next 12 months.

Beyond these opportunities, three higher-impact follow-on exploration candidates have been identified targeting prospective helium and oil plays. These prospects have the potential to materially expand Quantum's helium resource base while also providing significant oil upside.

Importantly, interpretation of the Company's extensive seismic dataset remains ongoing, with additional regional exploration concepts continuing to emerge as technical evaluation progresses.

Next Steps

Quantum intends to continue refining and prioritising the opportunities generated by the seismic programme while advancing permitting, technical studies and commercial planning associated with future drilling.

The Company expects to provide further market updates as individual exploration opportunities progress through detailed evaluation and development planning.

Howard McLaughlin, Quantum Chief Executive Officer, commented: "This multi-faceted evaluation programme represents one of the most important technical milestones in Quantum's development. Our objective wasn't simply to acquire new seismic data - it was to fundamentally improve our understanding of the basin and identify the next generation of drilling opportunities capable of creating long-term shareholder value.

The results have exceeded our expectations. Twelve months ago we had two highly prospective projects supported by historic drilling and legacy seismic. Today we have one of the most comprehensive technical datasets assembled across this part of the basin, together with a growing portfolio of exploration opportunities extending well beyond our existing independently assessed helium resources.

We've already identified two lower-risk drilling candidates that we believe could be targeted within the next twelve months, subject to the normal approvals and operational planning. Beyond those, we've identified three much larger follow-on exploration candidates that have the potential to materially expand our helium resource base while also offering significant oil upside.

Importantly, our work isn't finished. Every stage of interpretation continues to improve our understanding of the basin and generate new ideas. Rather than narrowing our focus, the seismic programme has continued to expand the number of opportunities we see across our acreage.

Combined with our ongoing engineering assessment of the Sagebrush helium accumulation, our substantial independently assessed helium resource base of more than 1 Bcf and our existing oil production, we believe Quantum has established the foundations for a multi-year exploration and development programme. We are only beginning to unlock the full potential of what we believe is one of the most prospective helium and oil acreage positions in Colorado."

Enquiries:

Updates on the Company's activities are regularly posted on its website: www.quantum-helium.com

Notes to editors

Quantum (AIM: QHE) is a helium, hydrogen and hydrocarbon exploration, development, and production company with projects in the US and Australia. Quantum's strategic objectives remain consistent: to identify opportunities which will provide operating cash flow and have development upside, in conjunction with progressing exploration. The Company has several projects in the US, in addition to royalty interests in Australia.