Form: 4

Statement of changes in beneficial ownership of securities

April 16, 2026

SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP


Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
  
 Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Sheffield Bryan
(Last) (First) (Middle)
300 COLORADO STREET, SUITE 1900
(Street)
AUSTIN TX 78701
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Tamboran Resources Corp [ TBN ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director X 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
04/14/2026
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
X Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 04/14/2026 A(1) 50,000(1) A $35 3,307,256 I See footnote(2)(3)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
1. Name and Address of Reporting Person*
Sheffield Bryan
(Last) (First) (Middle)
300 COLORADO STREET, SUITE 1900
(Street)
AUSTIN TX 78701
(City) (State) (Zip)
1. Name and Address of Reporting Person*
Sheffield Holdings, LP
(Last) (First) (Middle)
300 COLORADO STREET, SUITE 1900
(Street)
AUSTIN TX 78701
(City) (State) (Zip)
1. Name and Address of Reporting Person*
Spraberry Interests, LLC
(Last) (First) (Middle)
300 COLORADO STREET, SUITE 1900
(Street)
AUSTIN TX 78701
(City) (State) (Zip)
1. Name and Address of Reporting Person*
Daly Waters Energy, LP
(Last) (First) (Middle)
300 COLORADO STREET, SUITE 1900
(Street)
AUSTIN TX 78701
(City) (State) (Zip)
1. Name and Address of Reporting Person*
Formentera Australia Fund I GP, LP
(Last) (First) (Middle)
300 COLORADO STREET, SUITE 1900
(Street)
AUSTIN TX 78701
(City) (State) (Zip)
1. Name and Address of Reporting Person*
Formentera Investments LLC
(Last) (First) (Middle)
300 COLORADO STREET, SUITE 1900
(Street)
AUSTIN TX 78701
(City) (State) (Zip)
Explanation of Responses:
1. The shares were issued to the Bryan S. Sheffield Spousal Lifetime Access Trust ("BSS SLAT") pursuant to a share purchase agreement entered into in connection with a registered direct institutional entitlement offer (the "Institutional Entitlement Offer") of shares of common stock to eligible institutional holders pursuant to the registration statement on Form S-3 filed by Tamboran Resources Corporation with the U.S. Securities and Exchange Commission on April 7, 2026. The Institutional Entitlement Offer was subject to certain customary closing conditions. The closing conditions were satisfied and the Institutional Entitlement Offer closed on April 14, 2026.
2. Represents 2,247,404 securities held directly by Sheffield Holdings, LP ("Sheffield Holdings"), 876,197 securities held directly by Daly Waters Energy, LP ("Daly Waters"), and 183,655 securities held directly by BSS SLAT. Spraberry Interests, LLC ("Spraberry Interests") is the general partner of Sheffield Holdings. Bryan Sheffield is the manager of Spraberry Interests. As a result, each of Mr. Sheffield and Spraberry Interests may be deemed to share beneficial ownership of the shares held directly by Sheffield Holdings. Formentera Australia Fund I GP, LP ("Formentera Australia") is the general partner of Daly Waters. Formentera Investments LLC ("Formentera Investments") is the general partner of Formentera Australia. Bryan Sheffield is the managing member of Formentera Investments.
3. (Continued from footnote 2) As a result, each of Mr. Sheffield, Formentera Australia and Formentera Investments may be deemed to share beneficial ownership of the shares held directly by Daly Waters. Each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of its or his pecuniary interest therein, if any.
/s/ Bryan Sheffield 04/16/2026
Sheffield Holdings, LP, By: Spraberry Interests, LLC, its general partner, By: /s/ Bryan Sheffield, President 04/16/2026
Spraberry Interests, LLC, By: /s/ Bryan Sheffield, Manager 04/16/2026
Daly Waters Energy, LP, By: Formentera Australia Fund I GP, LP, its general partner, By: Formentera Investments LLC, its general partner, By: /s/ Bryan Sheffield, Managing Member 04/16/2026
Formentera Australia Fund I GP, LP, its general partner, By: Formentera Investments LLC, its general partner, By: /s/ Bryan Sheffield, Managing Member 04/16/2026
Formentera Investments LLC, By: /s/ Bryan Sheffield, Managing Member 04/16/2026
** Signature of Reporting Person Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

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