MNTK officer settles RSU tax with 2,748 withheld shares, holds 39,275

Rhea-AI Filing Summary

Montauk Renewables, Inc. (MNTK)11/24/2025, the officer had 2,748 shares of common stock withheld by the company at a price of $1.67 per share to cover tax obligations related to the vesting of restricted stock units. After this tax withholding transaction, the officer directly owned 39,275 shares of Montauk Renewables common stock. This event reflects routine equity compensation and associated tax settlement rather than an open-market stock sale.

11/26/2025 - 05:19 PM

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^*

Frank Sharon R

(Last) (First) (Middle)

5313 CAMPBELLS RUN ROAD, SUITE 200

(Street)

PITTSBURGH PA 15205

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Montauk Renewables, Inc. [ MNTK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VP Environ Health & Safety

3. Date of Earliest Transaction (Month/Day/Year)
11/24/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	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	11/24/2025		F		2,748(1)	D	$1.67	39,275	D

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

Explanation of Responses:

1. Represents shares withheld by the issuer to satisfy tax withhholding obligations in connection with the vesting of restricted stock units.

	/s/ John Ciroli, by Power of Attorney	11/26/2025
	** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Montauk Renewables (MNTK) report in this Form 4?

The company reported that an officer had 2,748 shares of common stock withheld on 11/24/2025 at $1.67 per share to satisfy tax obligations from vesting restricted stock units.

Who is the insider involved in this Montauk Renewables (MNTK) Form 4?

The reporting person is an officer of Montauk Renewables, serving as VP Environ Health & Safety, and is filing individually as one reporting person.

How many Montauk Renewables (MNTK) shares does the officer own after the reported transaction?

Following the tax withholding transaction, the officer directly beneficially owned 39,275 shares of Montauk Renewables common stock.

Was the Montauk Renewables (MNTK) insider transaction an open-market sale?

No. The Form 4 notes that the 2,748 shares were withheld by the issuer to satisfy tax withholding obligations from restricted stock units vesting, rather than being sold on the open market.

What does Transaction Code "F" mean in this Montauk Renewables (MNTK) Form 4?

Transaction Code "F" indicates a transaction where shares are withheld by the issuer to pay tax obligations associated with the vesting or exercise of equity awards.

Is this Montauk Renewables (MNTK) Form 4 filed by one or multiple reporting persons?

The Form 4 is filed by one reporting person, as indicated by the box checked for individual filing.