X0202 SCHEDULE 13G 0001001391 XXXXXXXX LIVE Common Stock, $0.01 par value 06/17/2026 0001679268 Mammoth Energy Services, Inc. 56155L108 14201 Caliber Drive, Suite 300 Oklahoma City OK 73134 Rule 13d-1(c) Charles E. Davidson X1 6470441.00 0.00 6470441.00 0.00 6470441.00 N 13.43 IN CD Holding Company, LLC DE 4066610.00 0.00 4066610.00 0.00 4066610.00 N 8.44 OO Mammoth Energy Services, Inc. 14201 Caliber Drive, Suite 300 Oklahoma City, Oklahoma 73134 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. 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. Davidson is United States citizen. CD Holdings is formed in Delaware. Y 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. 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. 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. 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. 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. 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. Y N 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. Y Y Y N 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. Charles E. Davidson /s/ Charles E. Davidson 06/22/2026 CD Holding Company, LLC /s/ Charles E. Davidson 06/22/2026