Mammoth Energy (TUSK) director reports 10,000-share common stock purchase on 12/11/2025

Rhea-AI Filing Summary

Mammoth Energy Services director Arthur Amron reported buying 10,000 shares of common stock on 12/11/2025 at a weighted average price of $1.89 per share. After this transaction, he directly owns 57,135 shares of Mammoth Energy Services common stock. The shares were purchased in multiple transactions at prices ranging from $1.88 to $1.89 per share, and the reporting person has agreed to provide full price breakdowns to the company, its security holders, or SEC staff upon request.

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^*

Amron Arthur H

(Last) (First) (Middle)

14201 CALIBER DRIVE

SUITE 300

(Street)

OKLAHOMA CITY OK 73134

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
MAMMOTH ENERGY SERVICES, INC. [ TUSK ]

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

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
12/11/2025

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	12/11/2025		P		10,000	A	$1.89	57,135	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:

Remarks:

The price reported in Column 4 is a weighted average purchase price. These shares were purchased in multiple transactions at prices ranging from $1.88 per share to $1.89 per share, inclusive. The reporting person undertakes to provide to Mammoth Energy Services, Inc., any security holder of Mammoth Energy Services, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

	/s/ Arthur Amron	12/15/2025
	** 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 share purchase did Mammoth Energy (TUSK) disclose?

The filing shows that director Arthur Amron purchased 10,000 shares of Mammoth Energy Services common stock on 12/11/2025.

At what price were the Mammoth Energy (TUSK) shares bought?

The shares were bought at a weighted average price of $1.89 per share, in multiple transactions at prices ranging from $1.88 to $1.89 per share.

How many Mammoth Energy (TUSK) shares does the director own after the transaction?

Following the reported purchase, director Arthur Amron directly owns 57,135 shares of Mammoth Energy Services common stock.

What is the relationship of the reporting person to Mammoth Energy (TUSK)?

The reporting person is identified as a Director of Mammoth Energy Services, Inc.

Is this Mammoth Energy (TUSK) Form 4 filed for one person or multiple insiders?

The document indicates that the Form 4 is filed by one reporting person, not a group.

What additional information did the Mammoth Energy (TUSK) director agree to provide if requested?

The director undertook to provide full information on the number of shares purchased at each separate price within the $1.88–$1.89 range to the company, any security holder, or SEC staff upon request.