0000899243-18-021021.txt : 20180801 0000899243-18-021021.hdr.sgml : 20180801 20180801192743 ACCESSION NUMBER: 0000899243-18-021021 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20180730 FILED AS OF DATE: 20180801 DATE AS OF CHANGE: 20180801 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: GULFPORT ENERGY CORP CENTRAL INDEX KEY: 0000874499 STANDARD INDUSTRIAL CLASSIFICATION: CRUDE PETROLEUM & NATURAL GAS [1311] STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-37917 FILM NUMBER: 18986211 BUSINESS ADDRESS: STREET 1: 14313 NORTH MAY AVENUE STREET 2: SUITE 100 CITY: OKLAHOMA CITY STATE: OK ZIP: 73134 BUSINESS PHONE: 4058488807 MAIL ADDRESS: STREET 1: 14313 NORTH MAY AVENUE STREET 2: SUITE 100 CITY: OKLAHOMA CITY STATE: OK ZIP: 73134 FORMER NAME: FORMER CONFORMED NAME: WRT ENERGY CORP DATE OF NAME CHANGE: 19930328 FORMER NAME: FORMER CONFORMED NAME: WESTERN RESOURCE TECHNOLOGIES INC DATE OF NAME CHANGE: 19600201 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: MAMMOTH ENERGY SERVICES, INC. CENTRAL INDEX KEY: 0001679268 STANDARD INDUSTRIAL CLASSIFICATION: OIL, GAS FIELD SERVICES, NBC [1389] IRS NUMBER: 320498321 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 14201 CALIBER DRIVE STREET 2: SUITE 300 CITY: OKLAHOMA CITY STATE: OK ZIP: 73134 BUSINESS PHONE: 405-608-6007 MAIL ADDRESS: STREET 1: 14201 CALIBER DRIVE STREET 2: SUITE 300 CITY: OKLAHOMA CITY STATE: OK ZIP: 73134 FORMER COMPANY: FORMER CONFORMED NAME: Mammoth Energy Services, Inc. DATE OF NAME CHANGE: 20160708 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2018-07-30 0 0001679268 MAMMOTH ENERGY SERVICES, INC. TUSK 0000874499 GULFPORT ENERGY CORP 3001 QUAIL SPRINGS PARKWAY OKLAHOMA CITY OK 73134 1 0 1 0 Common Stock 2018-07-30 4 S 0 118974 38.01 D 9829548 D These shares of common stock, par value $0.01 per share ("Common Stock") of Mammoth Energy Services, Inc. (the "Issuer"), were sold by Gulfport Energy Corporation ("Gulfport") to the underwriters in a secondary public offering of Common Stock at a price of $38.01 per share in connection with the underwriters' partial exercise of their option to purchase additional shares of the Issuer's Common Stock from Gulfport and the other selling stockholder granted by such selling stockholders in the previously reported June 2018 secondary offering (the "Option Exercise"). The Option Exercise closed on July 30, 2018. Of these securities, 4,877 are unvested restricted stock units ("RSUs") that were granted under the Issuer's 2016 Equity Incentive Plan and were assigned to Gulfport by its director designee to the Issuer's board of directors under the terms of his employment with Gulfport. Such director designee previously reported the acquisition of the RSUs in his Form 4 filings and indicated that these were assigned to Gulfport. Of these 4,877 unvested RSUs, 2,222 will vest on October 19, 2018 and 2,655 will vest on the earlier of June 7, 2019 and the date of the Issuer's 2019 Annual Meeting of Stockholders. Each RSU represents a contingent right to receive one share of Common Stock of the Issuer. /s/ Keri Crowell, Chief Financial Officer 2018-08-01