Sec Form 4 Filing - Gusek Ron @ Liberty Oilfield Services Inc. - 2018-01-17

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Gusek Ron 2. Issuer Name and Ticker or Trading Symbol Liberty Oilfield Services Inc. [ LBRT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) President (Last) (First) (Middle) 950 17TH STREET, SUITE 2400 3. Date of Earliest Transaction (MM/DD/YY) 01/17/2018 (Street) DENVER, CO80202 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class A Common Stock 01/17/2018 A 809,141 A 809,141 D Class A Common Stock 01/17/2018 D 15,628 ( 2 ) D $ 16.065 ( 3 ) 793,513 D Class A Common Stock 01/17/2018 A 225,544 ( 4 ) A $ 0 1,019,057 D Class A Common Stock 01/17/2018 A 292,481 ( 5 ) A $ 0 1,311,538 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Fo rm of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Gusek Ron 950 17TH STREET, SUITE 2400 DENVER, CO80202 President Signatures /s/ Ron Gusek, by Ryan Gosney as attorney-in-fact 01/19/2018 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The reporting person acquired these securities in accordance with the Master Reorganization Agreement (the "MRA"), dated January 11, 2018, by and among Liberty Oilfield Services Inc. (the "Issuer"), the reporting person and the other parties thereto. ( 2 )Represents securities redeemed by the Issuer pursuant to the MRA in connection with the exercise of the underwriters' over-allotment option. ( 3 )Represents the price to the public less underwriting discounts and commissions in the Issuer's initial public offering of shares of its Class A common stock. ( 4 )These shares of restricted Class A Common Stock, granted pursuant to the Liberty Oilfield Services Inc. Legacy Restricted Stock Plan, will vest on February 20, 2018. ( 5 )These shares of restricted Class A Common Stock, granted pursuant to the Liberty Oilfield Services Inc. Legacy Restricted Stock Plan, will vest in three equal annual installments beginning on October 31, 2018.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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