Form DEFA14A MAMMOTH ENERGY SERVICES,
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 14A
Proxy Statement Pursuant to Section 14(a) of the
Securities Exchange Act of 1934
ý Filed by Registrant
Check the appropriate box
¨ Preliminary Proxy Statement
¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
¨ Definitive Proxy Statement
ý Definitive Additional Materials
¨ Soliciting Material under § 240.14a-12
Mammoth Energy Services, Inc.
(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if other than Registrant)
Payment of Filing Fee (Check the appropriate box):
ý No fee required
¨ Fee paid previously with written preliminary materials
¨ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11


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