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Quantum Helium #QHE – Sagebrush-1 Testing Progresses; Key Leadville Perforation Next Week
Quantum Helium Limited (“Quantum” or the “Company”) is pleased to provide an operational update on the extended production test at the Sagebrush-1 well, Colorado.
Highlights
- Extended production test program progressing well, with operations advancing in line with plan
- Lower Leadville perforation scheduled for next week, targeting the primary helium-bearing interval
- Key well preparation milestones are progressing, including cementing, casing integrity testing and drill-out operations
- Testing programme designed to test flow rates and confirm historical helium concentrations of 2.76%
- Critical step towards converting prospective helium resources into reserves and commercial development
Operational Update
Operations at Sagebrush-1 continue to progress well, with the extended production test now actively underway.
Over the past week, the Company has successfully completed key preparatory and completion activities, currently completing cementing operations across the currently producing Ismay zone, pressure testing of casing, and drill-out of cement and bridge plug. These works are essential to ensure well integrity and optimise conditions ahead of flowing the primary target interval.
The next phase of operations will focus on the perforation and testing of the Lower Leadville Formation, the principal helium-bearing reservoir at Sagebrush, with perforation operations scheduled to start over the coming week as the programme moves into its key testing phase.
The Leadville test is designed to evaluate flow characteristics and confirm helium concentrations, building on historic testing at the Sagebrush-1 well, which recorded helium concentrations of 2.76%.
The Company will continue to provide updates as operations progress through this critical phase of testing.
Project Progress to Date
Quantum has delivered a series of significant milestones to reach this stage of operations, including:
- Acquisition and consolidation of the Sagebrush Project
- Approval of key agreements with the Ute Mountain Ute Tribe
- Securing and funding of the Irrevocable Letter of Credit for bonding purposes
- Approval of lease assignments and operatorship by the BIA and relevant regulators
- Completion of 3D seismic across the project area, identifying a large, well-defined structure
- Final regulatory approvals enabling commencement of field operations
These achievements position the Company strongly as it moves into the most critical stage of the extended production test.
Strategic Context
The extended production test at Sagebrush-1 represents a key step in Quantum’s strategy to unlock the value of its helium portfolio.
The Company holds over 1 Bcf of 2U prospective recoverable helium resources across Sagebrush and Coyote Wash, representing one of the largest independently assessed helium portfolios among London-listed companies.
The current testing programme is focused on advancing Sagebrush from a resource-stage asset towards reserves, development and ultimately commercial production, while further growth potential exists across multiple drill-ready prospects at Coyote Wash.
This strategy is supported, in part, by Quantum’s existing oil production at Sagebrush, which has continued to generate revenue and contribute towards funding helium-focused operations.
Quantum Chief Executive, Howard McLaughlin, commented: “We are very pleased with the progress being made at Sagebrush-1, with operations advancing smoothly through the initial phases of the extended production test program.
What sets Quantum apart from many of our peers is that we are not searching for helium – we already have a significant, independently assessed helium resource base. Our focus now is on confirming the historical helium concentration of 2.76% recorded at Sagebrush-1, and moving the resource into reserves, through appraisal and ultimately commercial development.
The upcoming perforation of the Lower Leadville Formation is a major milestone for the Company and marks the transition into the key testing phase. This is the interval we believe holds the greatest potential, and we are excited to now be entering this stage of operations.
Importantly, Sagebrush is just one part of a much larger growth story. With a substantial prospective helium resource base and multiple drill-ready targets at Coyote Wash, we believe Quantum is uniquely positioned in the London market as we move into the next stage of value creation.
We look forward to keeping shareholders updated as the flow testing program and results become available in due course.”
Enquiries:
| Quantum Helium Limited
Carl Dumbrell Chairman
|
NOMAD and Joint Broker
SP Angel Corporate Finance LLP Stuart Gledhill / Richard Hail / Adam Cowl +44 (0) 20 3470 0470 |
| Brand Communications
Alan Green Tel: +44 (0) 7976 431608 |
Joint Broker
CMC Markets UK Plc Douglas Crippen +44 (0) 020 3003 8632 |
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.
Quantum Helium #QHE – Extended Production Test Commences at Sagebrush-1
Quantum Helium Limited (AIM: QHE) is pleased to announce that the extended production test at the Sagebrush-1 well in Colorado has now commenced.
Chief Executive Officer, Howard McLaughlin, is on site overseeing operations as the Company moves into this critical phase of activity.
Highlights
- Extended production test underway at Sagebrush-1
- CEO on site to oversee testing operations
- Test to evaluate flow rates and helium concentrations
- Key step towards converting prospective resources into reserves
- Results expected to inform development planning
Sagebrush-1 – Key Milestone
Sagebrush-1 is a proven helium discovery well, with historic testing confirming helium concentrations of approximately 2.76% from the Leadville Formation.
The extended production test is designed to establish flow characteristics and confirm the commercial potential of the reservoir. This represents a critical step in advancing the Company’s prospective helium resources towards reserves and underpins future development planning.
The well benefits from existing infrastructure and does not require new drilling, allowing for a low-cost and efficient test programme.
Strategic Context
Quantum holds over 1.1 Bcf of independently verified prospective helium resources across its Sagebrush and Coyote Wash projects, positioning the Company as one of the largest verified helium resource holders among London-listed peers.
The commencement of testing at Sagebrush-1 represents a major value inflection point, moving the Company from discovery towards potential production.
With global helium markets tightening and spot prices rising significantly, the Company believes this test is well timed within a highly supportive macro environment.
Outlook
Testing is expected to run over the coming weeks, with results to be announced once analysis has been completed.
Howard McLaughlin, Chief Executive Officer of Quantum Helium, commented: “Commencing the extended production test at Sagebrush-1 is a major milestone for Quantum and an important step forward for the Company.
This well has already demonstrated the presence of helium, and this programme is focused on confirming flow rates and commercial potential. The results will be critical in moving our prospective resources towards reserves and defining the pathway to development.
We will keep shareholders informed as testing progresses and look forward to reporting the results in due course.
With strong momentum across our Colorado portfolio and increasing global demand for helium, we believe this is a highly significant phase for 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:
| Quantum Helium Limited
Carl Dumbrell Chairman
|
NOMAD and Joint Broker
SP Angel Corporate Finance LLP Stuart Gledhill / Richard Hail / Adam Cowl +44 (0) 20 3470 0470 |
| Brand Communications
Alan Green Tel: +44 (0) 7976 431608 |
Joint Broker
CMC Markets UK Plc Douglas Crippen +44 (0) 020 3003 8632 |
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
Quantum Helium #QHE – BIA Approval of Coyote Wash IMDA. Assignment of Sagebrush operatorship progressing towards conclusion
Quantum Helium Limited (AIM: QHE) is pleased to announce that it has received confirmation from the U.S. Bureau of Indian Affairs (“BIA”) that the Indian Mineral Development Agreement (“IMDA”) relating to the Coyote Wash Project has been formally approved.
This approval represents a significant regulatory milestone for the Company and follows the previously announced independent resource confirmation by Sproule ERCE at Coyote Wash.
The Company is still awaiting formal approval of the Sagebrush assignment of operatorship with the BIA having confirmed that all documentation required for the assignment of the relevant leases and designation of operatorship has been received and is in good standing.
The Company understands that formal approval of the Sagebrush assignment and operatorship is progressing towards conclusion and remains confident that this will be completed in the short term.
With IMDA approval now secured at Coyote Wash and constructive engagement ongoing across regulatory and Tribal stakeholders, Quantum believes it is entering an important operational phase across its Colorado portfolio.
Coyote Wash – IMDA Approval
The IMDA provides the contractual and regulatory framework under which Quantum may develop helium and hydrocarbon resources on Tribal lands within the Coyote Wash project area, where the Company holds a 100% working interest and is operator.
With IMDA approval now secured, Quantum is positioned to:
- Advance well planning and final permitting activities;
- Progress drilling preparations across the five mapped Leadville helium prospects;
- Refine development planning for both helium and Ismay oil targets; and
- Move towards drilling and development operations at Coyote Wash.
As announced on 19 December 2025, Sproule ERCE independently confirmed 2U gross prospective helium resources of 0.97 BCF at Coyote Wash. Combined with the 0.134 BCF 2U gross helium prospective resource at Sagebrush, Quantum holds 1.104 BCF gross (828 MMscf Net) 2U helium across its Colorado portfolio.
Sproule ERCE also identified prospective recoverable oil resources at Coyote Wash of up to 750,000 barrels (3U case) within the Ismay Formation
Coyote Wash contains five drill-ready Leadville helium prospects mapped on the recently reprocessed 3D seismic, together with additional Ismay oil targets, positioning the project as a material growth component of Quantum’s Colorado strategy.
Executive Visit to Colorado
The Coyote Wash IMDA approval follows an executive visit to Colorado by CEO Howard McLaughlin, Executive Chairman Carl Dumbrell and Executive Director Andrew Scott.
The visit included:
- Technical sessions with Quantum’s US subsurface and geophysical team;
- Review of 3D seismic processing and interpretation;
- A field visit to the Sagebrush project area;
- Final preparations for the extended flow test at Sagebrush-1;
- Meetings with local partners and advisors; and
- Discussions with representatives from the Tribal Council.
Of particular importance was the executive team’s meeting with leaders of the Ute Mountain Ute Tribe. The Company is very grateful for the time afforded to the team and sincerely appreciates the constructive engagement and ongoing support shown towards Quantum and its projects.
During discussions regarding the Sagebrush Project, the BIA confirmed that all documentation required for the assignment of the relevant leases and designation of operatorship has been received and is in good standing. The Company understands that formal approval of the Sagebrush assignment and operatorship is progressing towards conclusion.
Sagebrush – Extended Flow Test
Quantum’s immediate operational focus remains on securing final approvals required to commence the extended production test at Sagebrush-1.
The Sagebrush Project hosts a Sproule ERCE-verified 2U gross helium resource of 134 MMscf, with the Sagebrush-1 well historically flowing gas containing 2.76% helium during drill stem testing.
The recently completed high-resolution 3D seismic survey confirmed the presence and geometry of the large Leadville helium structure at Sagebrush, materially de-risking the planned extended test.
Commenting, CEO Howard McLaughlin said: “The approval of the Coyote Wash IMDA is a major step forward for Quantum. It provides the regulatory framework required to advance what is already an independently verified 0.97 BCF 2U gross helium prospective resource with additional oil upside.
Coyote Wash adds real scale to our Colorado portfolio. At the same time, our immediate focus remains on Sagebrush, where the extended production test at Sagebrush-1 is fully prepared pending final regulatory approvals. With documentation confirmed as in good standing and the assignment process progressing towards conclusion, we believe the remaining approvals are now in their final stages and look forward to updating the market upon receipt.
With 3D seismic confirming the integrity of the Leadville structure, we are well positioned to move into testing and the next phase of value creation.”
Executive Chairman Carl Dumbrell added: “Our visit to Colorado this week was extremely productive across technical, operational and stakeholder fronts. We reviewed seismic interpretation, field operations and final testing preparations, ensuring alignment across the team.
We are particularly grateful to the leaders of the Ute Mountain Ute Tribe for taking the time to meet with us. We greatly appreciate their constructive engagement and continued support for Quantum Helium and our projects. Building strong, respectful and long-term relationships remains fundamental to how we operate.”
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:
| Quantum Helium Limited
Carl Dumbrell Chairman
|
NOMAD and Joint Broker
SP Angel Corporate Finance LLP Stuart Gledhill / Richard Hail / Adam Cowl +44 (0) 20 3470 0470 |
| Brand Communications
Alan Green Tel: +44 (0) 7976 431608 |
Joint Broker
CMC Markets UK Plc Douglas Crippen +44 (0) 020 3003 8632 |
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.
Quantum Helium #QHE – Initial 3D Seismic Review Confirms Large Potential Leadville Helium Structure At Sagebrush
Quantum Helium Limited (AIM: QHE) is pleased to provide an update on the interpretation of the recently acquired high-resolution 3D seismic survey at its Sagebrush Helium Project in Colorado.
Highlights
- Initial processing of the Sagebrush high-resolution 3D seismic survey completed
- Historic Sagebrush-1 well confirmed as a dual oil and helium well, with the Ismay Formation producing over 300,000 barrels of oil and a deeper Drill Stem Test in the Leadville Formation flowing non-flammable gas containing 2.76% helium
- Initial interpretations suggest large potential helium-bearing Leadville structure consistent with historic well data and prior independent evaluation
- 3D seismic confirms the structural interpretation previously mapped from reprocessed 2D seismic
- Early identification of new potential oil and helium targets at Sagebrush and Coyote Wash
- Results materially de-risk the planned extended production test at Sagebrush-1
Sagebrush – 3D Seismic Update (See Figure 1)
Initial processing of the Sagebrush 3D seismic dataset has now been completed, with interpretation work progressing across both helium and oil targets.
The Sagebrush-1 well, drilled in 1994, intersected the Leadville Formation and recovered non-combustible gas during drill stem testing, with subsequent gas analysis confirming a helium concentration of 2.76%. Initial interpretations suggest this well data established the presence of a potential helium-bearing accumulation within the Leadville Formation and forms the foundation of the Company’s helium strategy at Sagebrush.
In 2024, the Company reprocessed existing 2D seismic data across the Sagebrush area, which allowed the Leadville structure hosting the Sagebrush-1 discovery to be mapped and its size and geometry better defined. This work was subsequently reviewed and confirmed by Sproule ERCE as part of the independent Sagebrush resource evaluation.
The newly acquired 3D seismic survey has now confirmed the Leadville structure previously mapped from the reprocessed 2D seismic, while providing significantly improved resolution, continuity and structural confidence. This confirmation of the existing interpretation was a core strategic objective of the 3D seismic programme.
Overall seismic data quality is excellent. Once final depth conversion is completed in the coming weeks, detailed prospect mapping will commence across the survey area.
A second key objective of the 3D seismic programme was to identify additional oil prospectivity. At the Ismay Formation level, where the Company has existing oil production, early interpretation has identified encouraging seismic amplitude responses that conform closely with the original Sagebrush Ismay oil discovery. Similar amplitude features are present nearby and may represent previously undrilled algal mound features, which are now being evaluated as potential new oil drilling targets through ongoing calibration with existing well, log and core data.
Figure 1: Preliminary Sagebrush Area Amplitudes at Ismay Level
Coyote Wash – Early Observations (See Figure 2)
Within the Company’s southern Coyote Wash acreage, preliminary seismic interpretation continues to support the view that the historic Mariano Wash 1-1 well was drilled near the edge of a larger structural feature. Seismic amplitudes indicate that the crest of the structure – typically the most prospective part of the trap – may not have been tested. These observations are based on early-stage interpretation and remain subject to further detailed analysis, calibration and integration with additional subsurface data. While this work is ongoing, the current dataset supports the potential for materially improved results from a future well drilled on the interpreted structural high.
Coyote Wash is at a more advanced stage of interpretation overall, with the Company having previously disclosed six drill-ready Leadville helium prospects, together with additional Ismay oil targets, all of which will be further refined as interpretation and confirmatory work progresses.
Figure 2: Mariano Wash Amplitude on New 3D and Prior to New 3D
Howard McLaughlin, Chief Executive of Quantum Helium, commented: “The Sagebrush-1 well established the presence of helium in the Leadville Formation more than three decades ago, with drill stem testing recovering non-combustible gas and subsequent analysis confirming a helium concentration of 2.76%. That well data, combined with reprocessed 2D seismic and independent validation by Sproule ERCE, gave us a strong technical foundation.
One of the primary objectives of the 3D seismic programme was to confirm that interpretation, and the new data has done exactly that – clearly validating the size, geometry and continuity of the Leadville structure we had previously mapped. The quality of the data is excellent and materially strengthens our confidence as we move towards testing the Leadville in Sagebrush-1.
The second objective of the survey was to identify new oil prospectivity, and we are encouraged by early indications at the Ismay level, where seismic amplitudes mirror the original Sagebrush oil discovery and suggest the presence of additional undrilled algal mound features. Together, these preliminary results significantly de-risk the next phase of activity and reinforce the broader development and growth potential across both Sagebrush and Coyote Wash.
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:
| Quantum Helium Limited
Carl Dumbrell Chairman
|
NOMAD and Joint Broker
SP Angel Corporate Finance LLP Stuart Gledhill / Richard Hail / Adam Cowl +44 (0) 20 3470 0470 |
| Brand Communications
Alan Green Tel: +44 (0) 7976 431608 |
Joint Broker
CMC Markets UK Plc Douglas Crippen +44 (0) 020 3003 8632 |
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
Quantum Helium #QHE – Sproule ERCE Confirms Major Helium Resource at Coyote Wash
Sproule ERCE Confirms Major Helium Resource at Coyote Wash
Over 1 BCF of Independently Verified Gross Helium Resources Across Colorado Projects
Establishes Quantum Helium Among the Largest Independently Certified Helium Companies on the LSE by resource size
Quantum Helium Limited (AIM: QHE), advancing helium, hydrogen and hydrocarbon projects in the USA, is pleased to announce receipt of the independent resource report from Sproule ERCE for the Coyote Wash Project in Colorado, where Quantum holds a 100% working interest.
The report estimates 2U (Best Estimate) gross recoverable helium of 0.97 BCF at Coyote Wash, which, when combined with the Sproule ERCE-verified 2U gross helium resource of 0.134 BCF at Sagebrush, establishes 1.104 BCF of independently verified 2U gross helium across the Company’s Colorado portfolio.
This represents Quantum’s second independently evaluated helium resource, reinforcing the continued growth and maturing technical confidence in the Company’s strategy.
Sproule ERCE has also completed its assessment of the oil potential at Coyote Wash, confirming 1U / 2U / 3U recoverable oil estimates of 150 / 420 / 750 thousand barrels across a single mapped Ismay prospect.
Highlights
- Sproule ERCE estimates 2U gross recoverable helium of 0.97 BCF at Coyote Wash
- Combined with Sagebrush, Quantum now has 104 BCF gross (828 MMscf Net) 2U helium, all independently evaluated.
- Potential gross value of ~ US$331 million ($300/Mscf)
- Establishes Quantum as having one of the largest independently verified helium portfolios among London-listed helium companies
- Sproule ERCE also identifies up to 750,000 barrels of potentially recoverable oil at an Ismay prospect with three potential well locations.
- 3D seismic acquisition at Sagebrush complete, with results of processing and interpretation expected in the new year to provide additional drillable oil and helium prospects
- Positive engagement with the Bureau of Indian Affairs (BIA) as the Company progresses towards approval for the extended flow test at Sagebrush-1
Sproule ERCE Resource Summary – Coyote Wash (Leadville Formation)
Coyote Wash – Total Gross Raw Gas Resource Volume Leadville Prospects (MMscf)
| Estimate | Total Raw Gas (MMscf) | Hydrocarbon Gas (MMscf) | Helium Gas (MMscf) | CO₂ Gas (MMscf) |
| 1U | 15,695 | 3,567 | 432 | 6,271 |
| 2U | 35,182 | 7,998 | 970 | 14,055 |
| 3U | 60,928 | 13,850 | 1,682 | 24,342 |
(Source: Sproule ERCE)
Ismay Formation – Gross Prospective Oil & Gas Resource Volumes
| Prospect | 1U Oil (Mstb) | 2U Oil (Mstb) | 3U Oil (Mstb) | 1U Gas (MMscf) | 2U Gas (MMscf) | 3U Gas (MMscf) |
| Mariano Wash Prospect – single well | 50 | 140 | 250 | 180 | 286 | 498 |
| Mariano Wash Prospect – 3 well total | 150 | 420 | 750 | 540 | 858 | 1,494 |
(Source: Sproule ERCE)
Coyote Wash – Total Net Raw Gas Resource Volume Leadville Prospects (MMscf)
(14% royalty which increases to 19% from Production Year 11 onwards)
| Estimate | Total Raw Gas (MMscf) | Hydrocarbon Gas (MMscf) | Helium Gas (MMscf) | CO₂ Gas (MMscf) |
| 1U | 12,293 | 2,794 | 338 | 4,912 |
| 2U | 26,371 | 5,995 | 727 | 10,535 |
| 3U | 42,957 | 9,765 | 1,186 | 17,162 |
(Source: Sproule ERCE)
Ismay Formation – Net Prospective Oil & Gas Resource Volumes
(14% royalty which increases to 19% from Production Year 11 onwards)
| Prospect | 1U Oil (Mstb) | 2U Oil (Mstb) | 3U Oil (Mstb) | 1U Gas (MMscf) | 2U Gas (MMscf) | 3U Gas (MMscf) |
| Mariano Wash Prospect – single well | 43 | 120 | 215 | 155 | 246 | 428 |
| Mariano Wash Prospect – 3 well total | 129 | 361 | 645 | 464 | 738 | 1,285 |
(Source: Sproule ERCE)
Quantum Chief Executive, Howard McLaughlin, commented: “This is a defining moment for Quantum. With Sproule ERCE now independently evaluating more than one billion cubic feet of 2U gross helium across Sagebrush and Coyote Wash, we have established ourselves among the larger independently certified helium companies on the London market. Few companies can point to two independently evaluated helium projects, a drilled and cased discovery well ready for testing, and a completed seismic acquisition programme that could further expand our resource base.”
“The Sproule ERCE outcome gives us tremendous confidence in the scale and quality of our portfolio. It validates our disciplined technical work, strengthens our strategic position, and sets the foundation for a highly active 2026. Our engagement with the BIA has been very constructive, including a meeting with senior officials this week, and we continue to progress towards approval for the extended flow test at Sagebrush-1. With meaningful project milestones ahead, shareholders can look forward to a sustained period of value-building newsflow.”
Qualified Person Statement
The information contained in this announcement has been reviewed and approved by Howard McLaughlin, Chief Executive Officer for Quantum Helium, who has more than 45 years of experience in the oil and gas industry and is a member of the American Association of Petroleum Geologists.
Note: (*) Resources have been estimated by Sproule ERCE using the reserve and resource estimation guidelines outlined by the Petroleum Resources Management System (PRMS), as revised June 2018. Helium and Carbon Dioxide gas has been evaluated as a non-hydrocarbon gases using the principles of the SPE PRMS as allowed by the SPE August 2022 statement on the “Extension of PRMS Principles to Non-Hydrocarbon/Non-Traditional Situations”.
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 the publication of this announcement via Regulatory Information Service (‘RIS’), this information is now considered to be in the public domain.
Enquiries:
| Quantum Helium Limited
Carl Dumbrell Chairman
|
NOMAD and Joint Broker
SP Angel Corporate Finance LLP Stuart Gledhill / Richard Hail / Adam Cowl +44 (0) 20 3470 0470 |
| Brand Communications
Alan Green Tel: +44 (0) 7976 431608 |
Joint Broker
CMC Markets UK Plc Douglas Crippen +44 (0) 020 3003 8632 |
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.
Glossary
| Term | Definition |
| 1U / Low Estimate | At least a 90% probability that the quantities recovered will equal or exceed this estimate. |
| 2U / Best Estimate | At least a 50% probability that the quantities recovered will equal or exceed this estimate. Often considered the “most likely” case. |
| 3U / High Estimate | At least a 10% probability that the quantities recovered will equal or exceed this estimate. Represents upside potential. |
| Bcf | Billion standard cubic feet of gas, measured at standard conditions of temperature and pressure |
| Contingent Resource | Those quantities of petroleum estimated, as of a given date, to be potentially recoverable from known accumulations by application of development projects, but which are not currently considered to be commercially recoverable owing to one or more contingencies. |
| MMscf | Million standard cubic feet of gas, measured at standard conditions of temperature and pressure. |
| Mscf | Thousand standard cubic feet of gas, measured at standard conditions of temperature and pressure. |
| Prospective Resource | Those quantities of petroleum estimated, as of a given date, to be potentially recoverable from undiscovered accumulations by application of future development projects. |
| PRMS | Petroleum Resources Management System, the globally recognized framework issued by the Society of Petroleum Engineers (SPE) and partners, used for classifying petroleum and non-hydrocarbon resources. |
Mosman Oil & Gas #MSMN – This Is Money
- Mosman Oil & Gas earlier this month unveiled a new report by industry consultant Sproule which laid out a ‘technically credible’ project at Sagebrush, in Colorado, with a gross value pitched between $40m & $80m.
- For context, that’s more than 10-times what the AIM share price reckons the company’s worth….
https://www.thisismoney.co.uk/money/markets/article-15166973/SMALL-CAP-IDEA-Mosman-hails-significant-milestone-helium-tilt.html
Mosman Oil & Gas #MSMN – Annual Report and Accounts for the Year Ended 30 June 2025
Mosman Oil and Gas Limited (AIM: MSMN), the helium, hydrogen and hydrocarbon company, announces that its Annual Report and Accounts for the financial year ended 30 June 2025 have today been released and are available on the Company’s website at: www.mosmanoilandgas.com/investors
The Annual Report will also be sent to shareholders who have elected to receive hard copies.
Key Highlights
- Revenue from continued operations increased to AUD $504k (FY24: $186k). Revenue from continuing operations increased during the year, primarily reflecting the acquired production at Sagebrush. On a consolidated basis, revenue decreased materially compared with the prior year due to the absence of revenue from discontinued operations following the divestment of oil assets.
- Net loss of AUD $10.3m (FY24: $1.5m),
- Cash at year-end of AUD $3.9m. Cash balance 25 September 2025 $2.6m.
- Strategic repositioning to helium exploration and development, with Sagebrush in Colorado established as the cornerstone asset.
- Progressing completion of exit from legacy oil interests, aligning operations fully with helium growth strategy.
- Strengthened Board and management team with new appointments and governance enhancements.
Carl Dumbrell, Executive Chairman of Mosman, commented: “FY25 marked a transformational year for Mosman as we repositioned the business squarely towards helium — a critical and high-value global resource. With Sagebrush validated by independent resource auditing and on track for seismic acquisition and flow testing in FY26, we are entering a period of significant value-driving activity. The divestment of non-core oil interests has sharpened our focus and positioned us to move decisively in this new phase. I am confident that Mosman now has the assets, team and strategy in place to unlock substantial shareholder value. On behalf of the Board, I thank shareholders for their continued support as we deliver on the exciting opportunities ahead.”
Additional Information
Copies of the Annual Report will be submitted to the National Storage Mechanism and will shortly be available for inspection at:
https://data.fca.org.uk/#/nsm/nationalstoragemechanism
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 the publication of this announcement via Regulatory Information Service (‘RIS’), this information is now considered to be in the public domain
Enquiries:
| Mosman Oil & Gas Limited
Carl Dumbrell Chairman
|
NOMAD and Joint Broker
SP Angel Corporate Finance LLP Stuart Gledhill / Richard Hail / Adam Cowl +44 (0) 20 3470 0470 |
| Brand Communications
Alan Green Tel: +44 (0) 7976 431608 |
Joint Broker
CMC Markets UK Plc Douglas Crippen +44 (0) 020 3003 8632 |
Updates on the Company’s activities are regularly posted on its website: www.mosmanoilandgas.com
Notes to editors
Mosman (AIM: MSMN) is a helium, hydrogen and hydrocarbon exploration, development, and production company with projects in the US and Australia. Mosman’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.
Link to view the Annual Report, Chairman’s Report and Financial Statements MSMN FY 2025 ANNUAL REPORT
Mosman Oil & Gas #MSMN – Bonding Approval for Sagebrush and Coyote Wash Projects
Mosman Oil and Gas Limited (AIM: MSMN), advancing helium, hydrogen and hydrocarbon projects in the USA, is pleased to advise that it has received approval from the Ute Mountain Ute Tribal Council (the “Council”) for the Company’s $150,000 bond, a prerequisite step to becoming an operator on Tribal land in Colorado.
Highlights
- Ute Mountain Ute Tribal Council has approved Mosman’s $150,000 bond, managed by the Bureau of Indian Affairs (BIA)
- Bonding will cover all activities across the Sagebrush and Coyote Wash projects
- Once formally accepted by the BIA, Mosman will be authorised as operator, enabling the assignment of the Seeley lease and commencement of the Sagebrush well test.
Next Steps
The BIA will now complete the formal process of accepting and holding the bond. Once this is finalised, Mosman will be authorised as operator, enabling both the assignment of the Seeley lease and preparations for the extended well test at Sagebrush.
Howard McLaughlin, Mosman’s Interim Chief Executive, commented: “Securing Tribal bonding is a pivotal achievement for Mosman, clearing the final hurdle to being recognised as operator on Tribal lands. With the Council’s approval now in place, we are moving quickly to complete the BIA process and unlock the full potential of both Sagebrush and Coyote Wash. This step not only allows us to progress to the Sagebrush well test, but also sets the stage for a period of sustained operational momentum and value creation for our shareholders.”
Enquiries:
| Mosman Oil & Gas Limited
Carl Dumbrell Chairman
|
NOMAD and Joint Broker
SP Angel Corporate Finance LLP Stuart Gledhill / Richard Hail / Adam Cowl +44 (0) 20 3470 0470 |
| Brand Communications
Alan Green Tel: +44 (0) 7976 431608 |
Joint Broker
CMC Markets UK Plc Douglas Crippen +44 (0) 020 3003 8632 |
Updates on the Company’s activities are regularly posted on its website: www.mosmanoilandgas.com
Notes to editors
Mosman (AIM: MSMN) is a helium, hydrogen and hydrocarbon exploration, development, and production company with projects in the US and Australia. Mosman’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.