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Brand Communications Monthly Highlights Newsletter November 2025
Brand Communications Monthly Highlights #Newsletter November 2025:
✅ Key announcements from #URU #FCM #MSMN #MDH #ECR #BRES #QHE #KDNC #FDR #HREE #SVML #SCSP #GRX #FCM #AYM #SCSP
✅ StockBox Media Research Talks November 2nd | November 9th | November 19th & November 16th covering #CINH #MANO #80M #ZOO #KDNC #PALM #TRI #AAI #URU #CMR #OHGR #MPAL
✅ Ultimate Breakout #podcast November 30th covering #URU #KDNC #MDH #SBDS
Read: https://mailchi.mp/branduk/brand-communications-highlights-newsletter-november-2025
Mosman Oil & Gas #MSMN – Change of name to Quantum Helium Limited
Mosman Oil and Gas Limited (“Mosman” or the “Company”), advancing helium, hydrogen and hydrocarbon projects in the USA, is pleased to announce that it has changed its name to Quantum Helium Limited.
The Australian Securities & Investments Commission has issued a Change of Name certificate on 13 November 2025, and the name change has become effective immediately.
The change of name has been notified to the London Stock Exchange and trading in the Company’s depository interests in respect of ordinary shares under the new company name, Quantum Helium Limited, and new ticker, QHE, is expected to commence at 8.00 a.m. on 14 November 2025.
The Company’s LEI, ISIN and SEDOL remain unchanged.
The Company’s new website address is https://www.quantum-helium.com and its new social media handle is @QuantumHelium.
Shareholders will be unaffected by the change of name, and any existing certificates representing depository interests bearing the Company’s former name remain valid and should be retained for future use.
Carl Dumbrell, Executive Chairman of Quantum Helium, commented: “The adoption of the Quantum Helium name reflects our evolution into a dedicated helium exploration and development company with verified and fast-advancing projects in Colorado’s Four Corners region. Our Sagebrush project has already been independently evaluated by Sproule ERCE, while the evaluation process for Coyote Wash is now underway, with results expected before the end of this month. With 3D seismic acquisition about to commence and an extended flow test planned at Sagebrush this quarter, we are entering a very active and potentially value accretive period for the Company. Quantum Helium benefits from proven helium prospective resources, a drilled and cased discovery well, and clear pathways toward commercial production. I’m very optimistic about the opportunities ahead for the Company and our shareholders.”
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 |
Notes to editors
Quantum Helium Limited (AIM:MSMN/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.
Mosman Oil and Gas #MSMN – Result of AGM
Mosman Oil and Gas Limited (AIM: MSMN), advancing helium, hydrogen and hydrocarbon projects in the USA, announces that the 2025 Annual General Meeting (“AGM”) was held in Sydney earlier today.
The Board is pleased to announce that all Resolutions were passed by way of a show of hands with overwhelming support via proxy.
The following proxies were received:
| Resolution No. | Resolution | For (Votes) | Against (Votes) | % Voted in Favour |
| 1 | Re-elect N Harvey | 1,009,461,381 | 1,875,428 | 99.22% |
| 2 | Re-elect C Dumbrell | 1,009,461,381 | 1,875,428 | 99.22% |
| 3 | Ratification of G Duncan | 1,009,809,023 | 1,875,428 | 99.22% |
| 4 | Ratification of A Scott | 1,009,809,023 | 1,875,428 | 99.22% |
| 5 | Placement Approval 1 | 967,450,336 | 43,886,473 | 95.09% |
| 6 | Placement Approval 2 | 967,450,336 | 43,886,473 | 95.09% |
| 7 | Placement Approval 3 | 967,450,336 | 43,886,473 | 95.09% |
| 8 | Placement Approval 4 | 967,797,978 | 43,886,473 | 95.09% |
| 9 | Placement Approval 5 | 967,450,336 | 43,886,473 | 95.09% |
| 10 | Placement Approval 6 | 967,797,978 | 43,886,473 | 95.09% |
| 11 | Company Name Change | 1,009,280,657 | 3,023,956 | 99.16% |
| 12 | Director Remuneration | 967,480,640 | 43,886,473 | 95.14% |
All resolutions were carried on a show of hands.
With regards to Resolutions 5 to 10, the Company provides notice this day that, in accordance with the approvals granted by shareholders, Mosman will proceed with the issue of shares to certain Directors and Persons Discharging Managerial Responsibilities (“PDMRs”).
The number of shares to be issued has been determined based on the five-day volume weighted average price (“VWAP”) of 0.0243 pence per share, being the VWAP for Mosman shares on AIM for the five trading days immediately prior to the AGM. As a result, Carl Dumbrell, Graham Duncan, Nigel Harvey, Andrew Scott, Tina Loh and Howard McLaughlin will each receive 60,950,617 shares, being 365,703,702 in total.
These shares will be issued to Directors and PDMRs as approved under Resolutions 5 to 10, and will be subject to a 12-month escrow period from the date of issue.
Admission to AIM and Total Voting Rights
Application will shortly be made to the London Stock Exchange for the PDMR 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 14 November 2025.
Following the issue of the PDMR shares, the Company’s share and total voting rights will comprise 32,980,558,696 Ordinary Shares of no par value and the Company does not hold any shares in treasury.
Consequently, the above figure may be used by shareholders in the Company as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, the share capital of the Company in accordance with the Companies’ Articles.
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.
| 1. | Details of PDMR/person closely associated with them (“PCA”) | |||||||
| a) | Name | 1) Carl Dumbrell
2) Nigel Harvey 3) Graham Duncan 4) Andrew Scott 5) Tina Loh 6) Howard McLaughlin |
||||||
| 2. | Reason for the notification | |||||||
| a) | Position/status | 1) Executive Chairman
2) Non-Executive Director 3) Non-Executive Director 4) Executive Director 5) Chief Financial Officer 6) Chief Executive |
||||||
| b) | Initial notification/ amendment |
Initial notification | ||||||
| 3. | Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor | |||||||
| a) | Full name of the entity | Mosman Oil and Gas Limited | ||||||
| b) | Legal Entity Identifier code | 213800PWZID9URNNGZ54 | ||||||
| 4. | Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted | |||||||
| a) | Description of the financial instrument, type of instrument
Identification code |
Ordinary shares of Mosman Oil and Gas Limited
AU0000XINET1 |
||||||
| b) | Nature of the transaction | Issue of Placing Shares
|
||||||
| c) | Price(s) and volume(s) |
|
||||||
| d) | Aggregated information
– Aggregated volume – Price |
Single transaction as in 4c) above |
||||||
| e) | Date of the transaction | 10 November 2025 | ||||||
| f) | Place of the transaction | Outside a trading venue | ||||||
Mosman Oil and Gas #MSMN – Sproule Engaged to Independently Verify Coyote Wash Helium Resource
Mosman Oil and Gas Limited (AIM: MSMN), advancing helium, hydrogen and hydrocarbon projects in the USA, is pleased to announce that it has formally engaged independent consultant Sproule ERCE to undertake a Competent Person’s Report (CPR) of the Coyote Wash Project in Colorado, USA, in which it owns 100% working interest.
This engagement follows Mosman’s recently announced internal best estimate of 1,072 MMcf (million cubic feet) of 2U gross prospective helium resources across six mapped Leadville helium prospects at Coyote Wash (RNS dated 13 October 2025).
Highlights
- Sproule ERCE formally engaged to independently verify Mosman’s internal Coyote Wash helium resource estimate under SPE PRMS standards.
- Work scope includes assessment of helium, CO₂ and hydrocarbon resources across eight mapped structures.
- Final report expected in late November 2025, which would provide Mosman with its second verified helium resource in Colorado.
- Follows Sproule’s independent verification of the Sagebrush Project completed in September 2025.
Background
Under the executed project schedule, Sproule ERCE will review Mosman’s technical dataset, including 3D seismic interpretation, petrophysical analysis, and well data from the Coyote Wash 30-12 well and offset analogues.
The scope of work includes a full CPR of the prospective helium, CO₂ and hydrocarbon resources across eight mapped structures in the project area, using Sagebrush reservoir parameters as an analogue.
Howard McLaughlin, Chief Executive Officer of Mosman, commented: “We’re very pleased to again be working with Sproule, this time to verify our internal helium resource estimate at Coyote Wash. This review will mark Mosman’s second independently verified helium resource, following Sproule’s certification of Sagebrush earlier this year – a major milestone that reinforces the credibility and depth of our Colorado portfolio. Coyote Wash already represents over one billion cubic feet of best-estimate helium resources across six defined prospects. Independent verification will provide additional confidence in those figures and allow us to advance detailed planning for drilling and development. With two verified helium projects, one drilled and cased well ready for testing, and 3D seismic expected to commence this quarter, Mosman is now in a strong, strategic position – ahead of many peers in terms of resource definition and proximity to potential production. We’re building a substantial helium business with clear momentum and tangible value catalysts ahead.”
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.
Brand Communications Monthly Highlights Newsletter October 2025
Brand Communications Monthly Highlights #Newsletter October 2025:
✅ Key announcements from #BRES #FDR #HREE #ECR #URU #KDNC #MSMN #MDH #SVML #GRX #FCM #AYM #SCSP
✅ CEO interviews with Richard Montjoie URU Metals #URU and Ivan Murphy Harena Rare Earths #HREE
✅ StockBox Media Research Talks October 5th | October 12th | October 19th & October 26th covering #HREE #HAMA #BUX #ARK #CMR #LEX #VLTA #BKS #FDR #BRES #COIN #SVML #WMG #MSMN #MDH #MPAL
✅ Breakout Capital Ventures #podcast October 4th | October 16th covering #IMM #MSMN #HREE #URU #SVML #BKS
Stockbox podcast with Alan Green, Mark Fairbairn and Dan Flynn covering #WMG, #MSMN, #MSH & #MPAL
Stockbox podcast with Alan Green, Mark Fairbairn and Dan Flynn covering:
- Western Mining #WMG
- Mosman Oil & Gas #MSMN
- Mendell Helium #MDH
- Medpal AI #MPAL
Mosman Oil and Gas #MSMN – £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:
| Mosman Oil & Gas Limited
Carl Dumbrell Executive Chairman
|
NOMAD and Joint Broker
SP Angel Corporate Finance LLP Stuart Gledhill / Richard Hail / Adam Cowl +44 (0) 20 3470 0470 |
| Retail Offer
CMC CapX +44 (0)20 30038632 |
Joint Broker
CMC Markets UK Plc Douglas Crippen +44 (0) 020 3003 8632 |
| Brand Communications
Alan Green Tel: +44 (0) 7976 431608 |
Updates on the Company’s activities are regularly posted on its website: www.mosmanoilandgas.com
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
This announcement should be read in its entirety. In particular, the information in the “Important Notices” section of the announcement should be read and understood.
Important Notices
The contents of this announcement have been prepared by and issued by the Company and is the sole responsibility of the Company. The Board of Directors of the Company are responsible for arranging the release of this announcement on behalf of the Company.
This announcement is not for publication or distribution, directly or indirectly, in or into the United States of America. This announcement is not an offer of securities for sale into the United States. The securities referred to herein have not been and will not be registered under the U.S. Securities Act of 1933, as amended, and may not be offered or sold in the United States, except pursuant to an applicable exemption from registration. No public offering of securities is being made in the United States.
This announcement and the information contained herein is not for release, publication or distribution, directly or indirectly, in whole or in part, in or into or from Australia, Canada, Japan, the Republic of South Africa, or any other jurisdiction where to do so might constitute a violation of the relevant laws or regulations of such jurisdiction.
The distribution of this announcement may be restricted by law in certain jurisdictions and persons into whose possession any document or other information referred to herein comes should inform themselves about and observe any such restriction. Any failure to comply with these restrictions may constitute a violation of the securities laws of any such jurisdiction.
CMC CapX is a software and technology platform owned and operated by CMC Markets UK plc (trading as CMC CapX) (registered address at 133 Houndsditch, London, EC3A 7BX). CMC Markets UK plc (“CMC“) is authorised and regulated in the United Kingdom by the FCA, is acting exclusively for the Company and for no-one else and will not regard any other person (whether or not a recipient of this announcement) as its client in relation to the Retail Offer and will not be responsible to anyone other than the Company for providing the protections afforded to its clients, nor for providing advice in connection with the Retail Offer, Admission and the other arrangements referred to in this announcement.
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.
Proposed Change of Name and Ticker
At the forthcoming Annual General Meeting on 10 November 2025, shareholders will be asked to approve the proposed change of the Company’s name to Quantum Helium Limited, with a proposed new AIM ticker QHE. The change, once approved and registered with the Australian Securities and Investments Commission (ASIC), will reflect Mosman’s strategic focus on helium exploration and development. A further announcement will be made regarding the timetable for the proposed change in due course.
Mosman Oil & Gas #MSMN – £1.67 Million Placing to Advance US Helium Assets Towards Drill-Ready Status PLUS Retail Offer
Mosman Oil and Gas Limited (AIM: MSMN), the helium, hydrogen and hydrocarbon company, confirms it has today raised £1,667,500 (before expenses) by way of a placing of 7,411,111,110 new ordinary shares (the “Placing Shares”) at a price of 0.0225p per share (the “Placing Price”) (the “Placing”).
The Placing was conducted by SP Angel Corporate Finance LLP and CMC Markets UK Plc, acting as Joint Brokersto the Company.
In addition to the Placing, as the Company greatly values the support of its retail shareholders, Mosman also intends to offer its existing eligible retail shareholders the opportunity to participate in a retail offer of new ordinary shares at the Placing Price for up to £500,000 (the “Retail Offer”).
The Company will release a separate announcement regarding the Retail Offer and its terms shortly. For the avoidance of doubt, the Placing is separate from and does not form part of the Retail Offer.
Progressing Helium Projects
Mosman continues to advance its portfolio of helium projects in the United States, with Sagebrush and Coyote Wash in Colorado representing the Company’s key near-term development priorities.
Funds raised from the Placing, together with the current cash balance of approximately £1.2 million, will be used to continue progressing exploration activity towards establishing the Sagebrush and Coyote Wash projects as drill-ready. The net proceeds of the Placing will be used for:
- Progressing the Independent Prospective Resource Validation at Coyote Wash (Q4 2025)
- Activities at Sagebrush, including 3D seismic acquisition and interpretation in Q4 2025, extended well testing through Q4 2025 to Q1 2026, well planning and long lead items, and surface facility design
- Field operations and administration
- General corporate purposes
Carl Dumbrell, Chairman of Mosman Oil and Gas, commented: “This successful Placing provides the capital needed to drive the next phase of development across our world-class helium assets in Colorado. The coming quarters will be an exceptionally active period for Mosman as we complete 3D seismic at Sagebrush, progress the Coyote Wash resource validation and prepare for and conduct extended well testing. We thank our investors for their continued support and look forward to delivering material progress and value creation through Q4 and into 2026.”
Admission to AIM and Total Voting Rights
The Placing is conditional, inter alia, upon the Placing Shares being admitted to trading on AIM. Application has been made to the London Stock Exchange for the Placing Shares, which will rank pari passu with the Company’s existing issued ordinary shares, to be admitted to trading on AIM and dealings are expected to commence at 8:00 a.m. on or about 23 October 2025.
Following the issue of the Placing Shares, the Company’s total voting rights will comprise 30,392,632,772 Ordinary Shares of no par value, and the Company does not hold any shares in treasury. The above figure may therefore be used by shareholders as the denominator for the calculations by which they will determine whether they are required to notify their interest in, or a change to their interest in, the share capital of the Company under the Companies’ Articles.
Correction to AGM Voting Date
Further to the Company’s recent Notice of Annual General Meeting (“AGM”), Mosman wishes to correct the voting deadline and time for receipt of Forms of Instruction in respect of the AGM, which will be held in Sydney on 10 October 2025.
The second paragraph of the AGM Notice should now read as follows:
“Completed Forms of Instruction must be lodged with the Depositary at The Pavilions, Bridgewater Road, Bristol BS99 6ZY, no later than 2:00 p.m. (London time) on 5 November 2025, being 1:00 a.m. AEDT (Sydney time) on 6 November 2025, or submitted electronically through the CREST voting system in accordance with the instructions set out on the Form of Instruction.
All other shareholders who hold shares directly in the Company’s register and not through CREST should either attend the Meeting in person or ensure that their completed Proxy Forms are received by the Company no later than 2:00 p.m. (London time) on 5 November 2025, being 1:00 a.m. AEDT (Sydney time) on 6 November 2025.”
The Company is also is pleased to announce an offer to its existing retail shareholders CMC CapX (the “Retail Offer“) of new ordinary shares of NPV each in the capital of the Company (the “Retail Offer Shares“).
In addition to the Retail Offer, the Company is also conducting a placing of new ordinary shares (the “Placing Shares” and together with the Retail Offer Shares, the “Fundraising Shares“) (the “Placing“). The price of the Fundraising Shares is 0.0225p (the “Issue Price“).
A separate announcement has been made regarding the Placing and its terms. For the avoidance of doubt, the Retail Offer is separate from and does not form part of the Placing.
The Retail Offer and the Placing are conditional on, the Fundraising Shares being admitted to trading on the AIM market operated by London Stock Exchange plc (“Admission“). Admission of the Placing Shares is expected to take place at 8.00 a.m. on 23rd October 2025. Admission of the Retail Offer Shares is expected to take place at 8.00 a.m. on 27th October 2025. Completion of the Retail Offer is conditional, inter alia, upon the completion of the Placing.
The Retail Offer
The Company values its retail shareholder base and believes that it is appropriate to provide its existing retail shareholders in the United Kingdom the opportunity to participate in the Retail Offer via participating financial intermediaries.
Therefore, the Company is making the Retail Offer open to Eligible Shareholders (as defined below) in the United Kingdom via CMC CapX following release of this announcement.
To be eligible to participate in the Retail Offer, applicants must be: (i) a retail shareholder of the Company on or prior to the release of this announcement; and (ii) resident in the United Kingdom; and (iii) a customer of a participating intermediary (such persons being “Eligible Shareholders“).
The Retail Offer is expected to close by 4pm on 21st October 2025, but the Company reserves the right to close it earlier. Eligible Shareholders should note that financial intermediaries may also have earlier closing times.
| Expected timetable | |
| Retail Offer opens | 9am on 17th October |
| Retail Offer closes | 4pm on 21st October |
| Announcement of the results of the Retail Offer | 7am on 22nd October |
| Admission of the Retail Offer Shares and crediting of CREST accounts | 8.00 am on or around 27th October 2025 |
The dates and times specified above are subject to change. In particular, the Company may (with the prior approval of CMC Markets UK plc) bring forward, extend or postpone the closing time and date for the Retail Offer. In the event that a date or time is changed, the Company will notify financial intermediaries who have applied for Retail Offer Shares on behalf of retail investors by post, by electronic mail or by the publication of a notice through a Regulatory Information Service.
Other retail brokers or wealth managers which, in each case, are investment professionals (within the meaning of article 19 of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005), wishing to participate in the Retail Offer on behalf of Eligible Shareholder, should contact CMC CapX via email to capx@cmcmarkets.com or by telephone on +44 (0) 20 3003 8632.
Eligible Shareholders wishing to subscribe for Retail Offer Shares should contact their broker or wealth manager who will confirm if they are participating in the Retail Offer.
There is a minimum subscription of £250 per investor. The terms and conditions on which investors subscribe will be provided by the relevant financial intermediaries including relevant commission or fee charges.
The Company reserves the right to scale back any order under the Retail Offer at its discretion. The Company reserves the right to reject any application for subscription under the Retail Offer without giving any reason for such rejection.
It is vital to note that once an application for Retail Offer Shares has been made and accepted via an intermediary, it is irrevocable and cannot be withdrawn.
The Retail Offer Shares will, when issued, be credited as fully paid and will rank pari passu in all respects with existing ordinary shares in the capital of the Company (“Ordinary Shares“) including the right to receive all dividends and other distributions declared, made or paid after their date of issue.
The Retail Offer is an offer to subscribe for transferable securities, the terms of which ensure that the Company is exempt from the requirement to issue a prospectus under Regulation (EU) 2017/1129 as it forms part of UK law by virtue of the European Union (Withdrawal) Act 2018 as amended (“EUWA“). It is a term of the Retail Offer that the aggregate total consideration payable for the Retail Offer Shares will not exceed £500,000 (or the equivalent in Euros). The exemption from the requirement to publish a prospectus in section 86(1)(e) of the Financial Services and Markets Act 2000 (as amended), will apply to the Retail Offer. As such, there is no need for publication of a prospectus pursuant to the Prospectus Regulation Rules of the FCA, or for approval of the same by the FCA.
The Retail Offer is not being made into any jurisdiction other than the United Kingdom.
No offering document, prospectus or admission document has been or will be prepared or submitted to be approved by the FCA (or any other authority) in relation to the Retail Offer and investors’ commitments will be made solely on the basis of the information contained in this announcement and information that has been published by or on behalf of the Company prior to the date of this announcement by notification to a Regulatory Information Service in accordance with the Disclosure Guidance and Transparency Rules, the AIM Rules for Companies, the Market Abuse Regulation (EU Regulation No. 596/2014) as it forms part of United Kingdom law by virtue of EUWA.
Investors should make their own investigations into the merits of an investment in the Company. Nothing in this announcement amounts to a recommendation to invest in the Company or amounts to investment, taxation or legal advice.
It should be noted that a subscription for Retail Offer Shares and investment in the Company carries a number of risks. Investors should take independent advice from a person experienced in advising on investment in securities such as the Retail Offer Shares if they are in any doubt.
An investment in the Company will place capital at risk. The value of investments, and any income, can go down as well as up, so investors could get back less than the amount invested.
Neither past performance nor any forecasts should be considered a reliable indicator of future results.
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:
| 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.
Proposed Change of Name and Ticker
At the forthcoming Annual General Meeting on 10 November 2025, shareholders will be asked to approve the proposed change of the Company’s name to Quantum Helium Limited, with a proposed new AIM ticker QHE. The change, once approved and registered with the Australian Securities and Investments Commission (ASIC), will reflect Mosman’s strategic focus on helium exploration and development. A further announcement will be made regarding the timetable for the proposed change in due course.
Mosman Oil and Gas #MSMN – Coyote Wash Project – Prospective Gross Helium Resources of 1,072 MMcf
Mosman Oil and Gas Limited (AIM: MSMN), the helium, hydrogen and hydrocarbon exploration, development and production company, which holds a 100% working interest in the Coyote Wash Project in Colorado, USA (“Coyote Wash Project”), is pleased to announce the first internal estimate of prospective helium resources for the project.
Highlights
- Best estimate 2U gross prospective helium resources of 1,072 MMcf (million cubic feet) calculated across six identified prospects at Coyote Wash, using parameters consistent with the recent independent evaluation of the nearby Sagebrush Project prepared by Sproule ERCE and announced on 18 September 2025.
- Resource model incorporates known reservoir properties from the Coyote Wash 30-12 well and helium concentration data of 7% He measured at Mosman’s Sagebrush-1 well, located 5 miles to the southwest.
- Coyote Wash lies in an established helium-producing region with proven reservoir deliverability in the Middle and Lower Leadville formations.
Coyote Wash Project
The Coyote Wash Project is located in the Four Corners region of Colorado and lies within an area of established helium production from the Leadville Formation carbonates, including the Doe Creek field approximately 50 miles to the north.
Technical evaluations by Mosman and its partner Four Corners Helium (FCH) have focused on reinterpretation of vintage well data and reprocessed 3D seismic to understand the resource potential within the project area. The Coyote Wash 30-12 well, drilled by Wintershall in 1985, encountered 258 feet of Leadville carbonates within the Coyote Wash North closure. Three DST’s were performed in the middle and lower Leadville flowing non-flammable gas. Test data indicates the well flowed 173mcf/d from 14ft of stacked dolomite units in the middle Leadville.Although the gas composition was not analysed at the time, the well confirmed good reservoir properties and deliverability from the Leadville sequence before being plugged and abandoned.
A detailed petrophysical interpretation of Coyote Wash 30-12 and nearby offset wells was subsequently undertaken by FCH to determine key reservoir parameters for resource calculations. Interpretation of the reprocessed 3D seismic has defined six individual prospects at the Leadville level within the project area. Coyote Wash North (CN-1) is located in the upthrown fault block, while the remaining five prospects lie in the southern downthrown block. These structures have been mapped from high-quality seismic data and form the basis of Mosman’s initial prospective resource estimates.
Helium was confirmed at Mosman’s Sagebrush-1 well, located five miles southwest of Coyote Wash 30-12, with measured concentrations of 2.7% He. Regional gas and production data indicate that similar commercial helium concentrations are likely to be present at Coyote Wash, and this value has been used to calculate the prospective helium resources across the six defined structures.
In determining reservoir parameters, Mosman adopted a 5% porosity value for the southern Coyote Wash prospects, consistent with the conservative “most likely” porosity used by Sproule ERCE in their recent independent analysis of the Sagebrush resource. A higher 8% porosity was applied to the Coyote Wash North prospect, reflecting its proximity to the Coyote Wash 30-12 well and the high reservoir quality observed there.
Figure 1: Coyote Wash project area and Coyote Wash North location
Figure 2: Two-way time structure map and prospects, Leadville formation, Coyote Wash Project Area (source FCH)
Next Steps
Mosman will now formally engage Sproule ERCE, the independent consultant who recently verified helium prospective resources at Sagebrush, to conduct a detailed assessment and certification of the Coyote Wash prospective resources.
This work will provide a third-party validation of Mosman’s internal estimates and form the basis for future drilling and development planning.
Howard McLaughlin, Chief Executive Officer of Mosman, commented: Coyote Wash represents another exciting step in Mosman’s US helium growth strategy. With six mapped Leadville prospects and best-estimate helium prospective resources exceeding one billion cubic feet, the project has clear scale and upside potential. The combination of strong reservoir characteristics, proven regional helium charge, and proximity to our Sagebrush discovery provides confidence that Coyote Wash could become a significant addition to Mosman’s portfolio. Following Sproule ERCE’s successful independent verification at Sagebrush, we look forward to engaging them again to confirm and refine these results as we advance towards drilling and development.”
Table 1: Prospective Resources at Coyote Wash
| Best Estimate 2U Prospective Resources (MMcf) | |||||||||||
| Total Gas | Recoverable Helium | ||||||||||
| Coyote Wash North | 31,298 | 509 | |||||||||
| Coyote Wash South-1 | 15,878 | 260 | |||||||||
| Coyote Wash South-2 | 5,076 | 82 | |||||||||
| Coyote Wash South-3 | 5,101 | 67 | |||||||||
| Coyote Wash South-4 | 5,529 | 90 | |||||||||
| Coyote Wash South-5 | 3,959 | 64 | |||||||||
| Total | 65,942 | 1,072 | |||||||||
|
Net of Royalty |
54,072 | 879 | |||||||||
|
Mosman % (net) |
54,072 | 879 | |||||||||
| Source: Mosman / FCH estimates | |||||||||||
| Notes | |||||||||||
| 1. The estimated quantities of gas that may potentially be recovered by the application of a future development project relates to undeveloped accumulations. These estimates have a risk of development. Further appraisal and evaluation are required to determine the optimal development plan and commerciality. | |||||||||||
| 2. The natural gas resource estimates have been derived in accordance with the principles of the Petroleum Resources Management System (PRMS). The PRMS specifically applies to petroleum. However, the Oil and Gas Reserves Committee of the Society of Petroleum Engineers (SPE) advised in August 2022 that although the gaseous extraction of natural hydrogen and helium is outside of the scope of the PRMS, the principles can be applied given the similarities in exploration, evaluation and exploitation. | |||||||||||
| 3. The resource estimates are presented on a net entitlements basis and represent Mosman’s net economic interest in the prospective recoverable hydrogen and helium volumes after deductions for an 14% royalty and the 100% working interest. Royalty rate escalates over an initial 12-year period from 14% to 18%. Thereafter it remains at 18%. | |||||||||||
| 4. The Prospective Resources have been evaluated using deterministic methods and represent best estimates. A low case and high case were not estimated. | |||||||||||
| 5. The estimates are for naturally occurring gas only. No adjustment has been made to the estimates to account for fuel and flare | |||||||||||
Qualified Person Statement
The information contained in this announcement has been reviewed and approved by Howard McLaughlin, Chief Executive Officer for Mosman, 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.
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:
| 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.
Proposed Change of Name and Ticker
At the forthcoming Annual General Meeting on 10 November 2025, shareholders will be asked to approve the proposed change of the Company’s name to Quantum Helium Limited, with a proposed new AIM ticker QHE. The change, once approved and registered with the Australian Securities and Investments Commission (ASIC), will reflect Mosman’s strategic focus on helium exploration and development. A further announcement will be made regarding the timetable for the proposed change in due course.
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. |
| DST (Drill Stem Test) | A temporary well test conducted to determine the presence and productivity of hydrocarbons or helium in a formation. |
| 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. |
| Porosity | The percentage of pore volume or void space, or that volume within rock that can contain fluids. Porosity can be generated by the development of fractures, in which case it is called fracture porosity. Effective porosity is the interconnected pore volume in a rock that contributes to fluid flow in a reservoir. It excludes isolated pores. Total porosity is the total void space in the rock whether or not it contributes to fluid flow. Thus, effective porosity is typically less than total porosity. |
| 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. |
| 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. |
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