Mammoth Energy Services, Inc. Schedule 13G shows two related reporting persons jointly claiming beneficial ownership of company stock. Charles E. Davidson is reported to beneficially own 6,470,441 shares (13.43%) and CD Holding Company, LLC holds 4,066,610 shares (8.44%).
The filing states these percentages are calculated on the basis of 48,170,647 shares outstanding as of May 5, 2026. Davidson may be deemed to beneficially own CD Holding’s shares due to his controlling relationship; the Reporting Persons filed jointly under a written agreement.
Positive
None.
Negative
None.
Insights
Two affiliated holders report double-digit and single-digit stakes, with joint filing disclosures.
The filing lists 6,470,441 shares (13.43%) for Charles E. Davidson and 4,066,610 shares (8.44%) for CD Holding Company, LLC, using an outstanding share base of 48,170,647 as of May 5, 2026. It states Davidson may be deemed to beneficially own CD Holding’s shares due to control.
Key dependencies include the continuing ownership status and any changes disclosed in future filings; subsequent amendment filings would restate percentages if the outstanding share count or holdings change. Cash‑flow treatment and any planned dispositions are not included in the excerpt.
Key Figures
Shares outstanding:48,170,647 sharesDavidson beneficial ownership:6,470,441 sharesDavidson ownership percentage:13.43%+2 more
5 metrics
Shares outstanding48,170,647 sharesas of May 5, 2026
Davidson beneficial ownership6,470,441 sharesreported in Schedule 13G
Davidson ownership percentage13.43%of common stock, as calculated on outstanding shares as of May 5, 2026
CD Holding ownership4,066,610 sharesreported in Schedule 13G
CD Holding ownership percentage8.44%of common stock, as calculated on outstanding shares as of May 5, 2026
Key Terms
Schedule 13G, Beneficially own, Sole Voting Power, Sole Dispositive Power
4 terms
Schedule 13Gregulatory
"are hereby jointly filing this because such Reporting Persons may be deemed"
A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.
Beneficially ownfinancial
"be deemed to beneficially own the same securities named in Item 1"
Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.
Sole Voting Powerregulatory
"5 | Sole Voting Power 6,470,441.00"
Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.
Sole Dispositive Powerregulatory
"7 | Sole Dispositive Power 6,470,441.00"
Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.
What stake does Charles E. Davidson report in Mammoth Energy (TUSK)?
Charles E. Davidson reports beneficial ownership of 6,470,441 shares, representing 13.43% of common stock based on May 5, 2026 outstanding shares. The filing notes Davidson may be deemed to own CD Holding’s shares due to control.
How many shares does CD Holding Company, LLC report owning in TUSK?
CD Holding Company, LLC reports ownership of 4,066,610 shares, representing 8.44% of common stock calculated on the May 5, 2026 outstanding share base of 48,170,647 shares.
What outstanding share count is used to calculate percentages in the Schedule 13G?
The percentages are calculated on a base of 48,170,647 shares outstanding as of May 5, 2026, as reported by the issuer in its proxy filing referenced in the Schedule 13G.
Do the Reporting Persons file jointly or separately for TUSK?
The Schedule 13G states the Reporting Persons filed jointly under a written Joint Filing Agreement (Exhibit 99.1) because they may be deemed to beneficially own the same securities due to affiliations.
Does the filing state who receives proceeds or intends to sell shares?
The excerpt does not disclose any planned sales or proceeds allocation; it states who holds voting and dispositive power but does not describe any intended transactions or cash‑flow treatment.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
Mammoth Energy Services, Inc.
(Name of Issuer)
Common Stock, $0.01 par value
(Title of Class of Securities)
56155L108
(CUSIP Number)
06/17/2026
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
schemaVersion:
SCHEDULE 13G
CUSIP Number(s):
56155L108
1
Names of Reporting Persons
Charles E. Davidson
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
6,470,441.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
6,470,441.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
6,470,441.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
13.43 %
12
Type of Reporting Person (See Instructions)
IN
SCHEDULE 13G
CUSIP Number(s):
56155L108
1
Names of Reporting Persons
CD Holding Company, LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
4,066,610.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
4,066,610.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
4,066,610.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
8.44 %
12
Type of Reporting Person (See Instructions)
OO
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Mammoth Energy Services, Inc.
(b)
Address of issuer's principal executive offices:
14201 Caliber Drive, Suite 300 Oklahoma City, Oklahoma 73134
Item 2.
(a)
Name of person filing:
Charles E. Davidson ("Davidson") and CD Holding Company, LLC ("CD Holdings", and together with Davidson, the "Reporting Persons") are hereby jointly filing this Schedule 13G because such Reporting Persons may be deemed to beneficially own the same securities named in Item 1 due to certain affiliations among the Reporting Persons. In accordance with Rule 13d-1(k)(1)(iii) promulgated pursuant to the Securities Exchange Act of 1934, as amended, the Reporting Persons have executed a written agreement relating to the joint filing of this Schedule 13G (the "Joint Filing Agreement"), a copy of which is annexed hereto as Exhibit 99.1.
(b)
Address or principal business office or, if none, residence:
The address of the principal business office of the Reporting Persons is c/o Wexford Capital LP, 777 South Flagler Drive, Suite 602 East, West Palm Beach, FL 33401.
(c)
Citizenship:
Davidson is United States citizen. CD Holdings is formed in Delaware.
(d)
Title of class of securities:
Common Stock, $0.01 par value
(e)
CUSIP Number(s):
56155L108
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
The information required by Item 4(a) is set forth in Row 9 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
Davidson may, by reason of his status as a controlling person of CD Holdings, be deemed to own beneficially the securities held by CD Holdings.
(b)
Percent of class:
The information required by Item 4(b) is set forth in Row 11 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
The information in Row 11 is calculated on the basis of 48,170,647 shares of Common Stock issued and outstanding as of May 5, 2026, as reported by the Issuer in the Schedule 14A filed by the Issuer with the Securities and Exchange Commission on May 15, 2026.
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
The information required by Item 4(c)(i) is set forth in Row 5 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
(ii) Shared power to vote or to direct the vote:
The information required by Item 4(c)(ii) is set forth in Row 6 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
(iii) Sole power to dispose or to direct the disposition of:
The information required by Item 4(c)(iii) is set forth in Row 7 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
(iv) Shared power to dispose or to direct the disposition of:
The information required by Item 4(c)(iv) is set forth in Row 8 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
Item 5.
Ownership of 5 Percent or Less of a Class.
Not Applicable
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
Davidson has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the shares of Common Stock reported herein.
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
Not Applicable
Item 8.
Identification and Classification of Members of the Group.
Not Applicable
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
