IN RE MAMMOTH ENERGY SERVICES, INC. SECURITIES LITIGATION

This Notice relates to a proposed Settlement of claims in a pending securities class action brought by investors alleging, among other things, that defendants Mammoth Energy Services, Inc. (“Mammoth”) Arty Straehla, Mark Layton, and Keith Ellison (collectively, the “Defendants”) violated the federal securities laws by making false and misleading statements relating to contracts between the Puerto Rico Electric Power Authority (“PREPA”) and an indirect Mammoth subsidiary, and related payments. A more detailed description of the Action is set forth on pages 4-6 below. The proposed Settlement, if approved by the Court, will settle claims of the Settlement Class, as defined on page 6 below.