STOCK TITAN

Bryan Sheffield group (TBN) lifts Tamboran stake via $35 share offer

Filing Impact
(Moderate)
Filing Sentiment
(Neutral)
Form Type
SCHEDULE 13D/A

Rhea-AI Filing Summary

Tamboran Resources Corporation’s large shareholder group led by Bryan Sheffield has updated its ownership disclosure in Amendment No. 6 to a Schedule 13D. The reporting persons collectively report beneficial ownership of 3,307,256 shares of common stock, representing 11.9% of Tamboran’s outstanding shares, based on 22,667,289 shares outstanding as of March 31, 2026.

The filing details holdings through several entities, including Sheffield Holdings LP, Spraberry Interests LLC, Daly Waters Energy LP, Formentera Australia Fund I GP LP, and Formentera Investments LLC, as well as a spousal lifetime access trust. The trust (BSS SLAT) agreed to purchase 50,000 shares at $35 per share in an Institutional Entitlement Offer that closed on April 14, 2026, a stake the filing notes represents less than 1% of Tamboran’s outstanding common stock.

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Beneficial ownership 3,307,256 shares Collective reporting persons’ holdings in Tamboran common stock
Ownership percentage 11.9% Portion of Tamboran common stock class represented by 3,307,256 shares
Sheffield Holdings stake 2,247,404 shares (8.1%) Shares of Tamboran common stock held of record by Sheffield Holdings LP
Daly Waters stake 876,197 shares (3.1%) Shares of Tamboran common stock held of record by Daly Waters Energy LP
BSS SLAT record holdings 183,655 shares Tamboran shares held by BSS SLAT after the Institutional Entitlement Offer
New shares purchased 50,000 shares at $35/share Purchase by BSS SLAT under the Institutional Entitlement Offer
Shares outstanding baseline 22,667,289 shares Tamboran common stock outstanding as of March 31, 2026
beneficial ownership financial
"each of Mr. Sheffield and Spraberry may be deemed to share beneficial ownership of the shares"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
Institutional Entitlement Offer financial
"after giving effect to closing of the Institutional Entitlement Offer (as defined below)"
An institutional entitlement offer is a company’s invitation to large, professional investors to buy additional new shares, usually at a set price and proportionate to their existing holdings. Think of it like giving major partners a chance to purchase extra slices of a pie before others; it raises cash for the company but can dilute existing shareholdings and influence short-term share price and ownership stakes, so investors watch it closely.
CHESS Depositary Interests financial
"741,542 shares underlying 148,308,400 CHESS Depositary Interests ("CDIs")"
CHESS depositary interests are tradable certificates used on the Australian settlement system that represent ownership of underlying foreign shares held by a custodian. They let investors buy and sell foreign-listed stocks on the local exchange as if they were domestic shares, simplifying trading, dividend collection and record-keeping, though they may involve custodian fees and can alter certain direct shareholder rights and tax treatments.
registered direct institutional entitlement offer financial
"in connection with a registered direct institutional entitlement offer (the "Institutional Entitlement Offer")"
share purchase agreement financial
"BSS SLAT entered into a share purchase agreement (the "Share Purchase Agreement")"
A share purchase agreement is a written contract that outlines the terms and conditions for buying and selling shares of a company. It specifies details like the price, number of shares, and any special conditions, ensuring both buyer and seller agree on the transaction. For investors, it provides clarity and legal protection, making sure the purchase is clear and enforceable.





87507T101

(CUSIP Number)
Bryan Sheffield
300 Colorado Street, Suite 1900
Austin, TX, 78701
737-304-7803

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)
04/14/2026

(Date of Event Which Requires Filing of This Statement)


If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).




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SCHEDULE 13D


Bryan Sheffield
Signature:/s/ Bryan Sheffield
Name/Title:Bryan Sheffield
Date:04/16/2026
Sheffield Holdings, LP
Signature:/s/ Bryan Sheffield
Name/Title:Bryan Sheffield / Manager
Date:04/16/2026
Spraberry Interests, LLC
Signature:/s/ Bryan Sheffield
Name/Title:Bryan Sheffield / Manager
Date:04/16/2026
Daly Waters Energy, LP
Signature:/s/ Bryan Sheffield
Name/Title:Bryan Sheffield / Managing Member
Date:04/16/2026
Formentera Australia Fund I GP, LP
Signature:/s/ Bryan Sheffield
Name/Title:Bryan Sheffield / Managing Member
Date:04/16/2026
Formentera Investments LLC
Signature:/s/ Bryan Sheffield
Name/Title:Bryan Sheffield / Managing Member
Date:04/16/2026
Comments accompanying signature:
Sheffield Holdings, LP By: Spraberry Interests, LLC, its general partner Daly Waters Energy, LP By: Formentera Australia Fund I GP, LP, its general partner By: Formentera Investments LLC, its general partner Formentera Australia Fund I GP, LP By: Formentera Investments LLC, its general partner