{"url_path":"/sec/tusk/proxy/2026-05-15/000162828026035590","section_key":"body","section_title":"DEFA14A body","topic":"sec","document":{"doc_type":"DEFA14A","doc_date":"2026-05-15","source_url":"https://www.sec.gov/Archives/edgar/data/1679268/0001628280-26-035590-index.html","accession_number":"0001628280-26-035590","cik":"0001679268","ticker":"TUSK","issuer_name":"MAMMOTH ENERGY SERVICES, INC.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1679268/0001628280-26-035590-index.html","primary_entity_key":"0001679268","primary_entity_name":"MAMMOTH ENERGY SERVICES, INC."},"word_count":128,"has_tables":true,"body_markdown":"DEFA14A\n1\na2026-05x15defa14a.htm\nDEFA14A\n\nDocument\n\nUNITED STATES\n\nSECURITIES AND EXCHANGE COMMISSION\n\nWashington, D.C. 20549\n\nSCHEDULE 14A\n\nProxy Statement Pursuant to Section 14(a) of the\n\nSecurities Exchange Act of 1934\n\ný    Filed by Registrant\n\nCheck the appropriate box\n\n¨    Preliminary Proxy Statement\n\n¨    Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))\n\n¨    Definitive Proxy Statement\n\ný    Definitive Additional Materials\n\n¨    Soliciting Material under § 240.14a-12\n\nMammoth Energy Services, Inc.\n\n(Name of Registrant as Specified In Its Charter)\n\n(Name of Person(s) Filing Proxy Statement, if other than Registrant)\n\nPayment of Filing Fee (Check the appropriate box):\n\ný    No fee required\n\n¨    Fee paid previously with written preliminary materials\n\n¨    Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11"}