144 0001821262 XXXXXXXX LIVE 0001679268 Mammoth Energy Services, Inc. 001-37917 14201 Caliber Dr. Suite 300 Oklahoma City OK 73134 4056086007 Booker Corey J. Director Common Stock Rockefeller Financial LLC

45 Rockefeller Plaza Floor 5 New York NY 10111

64767 250000.62 48127369 11/07/2024 Nasdaq Global Select Common Stock 08/17/2020 Grant by the issuer of restricted stock units (RSUs) to the reporting person under the issuer's equity incentive plan, which RSUs fully vested on June 2, 2021, with the underlying shares of common stock registered on Form S-8. Issuer N 53618 08/17/2020 Incentive compensation under the issuer's equity incentive plan for services performed as a director of the issuer. Common Stock 06/02/2021 Grant by the issuer of restricted stock units (RSUs) to the reporting person under the issuer's equity incentive plan, which RSUs fully vested on June 2, 2022, with the underlying shares of common stock registered on Form S-8. Issuer N 11149 06/02/2021 Incentive compensation under the issuer's equity incentive plan for services performed as a director of the issuer. Y 11/07/2024 /s/ Corey J. Booker