SEC Form 3

FORM 3

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

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1. Name and Address of Reporting Person* Riverstone/Carlyle Energy Partners IV, L.P. (Last) (First) (Middle) C/O RIVERSTONE HOLDINGS LLC 712 FIFTH AVENUE, 36TH FLOOR (Street) NEW YORK NY 10019 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 01/11/2018	3. Issuer Name and Ticker or Trading Symbol Liberty Oilfield Services Inc. [ LBRT ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director 10% Owner Officer (give title below) Other (specify below)	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person* Riverstone/Carlyle Energy Partners IV, L.P. (Last) (First) (Middle) C/O RIVERSTONE HOLDINGS LLC 712 FIFTH AVENUE, 36TH FLOOR (Street) NEW YORK NY 10019 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* R/C Energy IV Direct Partnership, L.P. (Last) (First) (Middle) C/O RIVERSTONE HOLDINGS LLC 712 FIFTH AVENUE, 36TH FLOOR (Street) NEW YORK NY 10019 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* R/C IV Liberty Holdings, L.P. (Last) (First) (Middle) C/O RIVERSTONE HOLDINGS LLC 712 FIFTH AVENUE, 36TH FLOOR (Street) NEW YORK NY 10019 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* R/C Energy GP IV, LLC (Last) (First) (Middle) C/O RIVERSTONE HOLDINGS LLC 712 FIFTH AVENUE, 36TH FLOOR (Street) NEW YORK NY 10019 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

Remarks:

This Form 3 is being filed in connection with effectiveness of the registration statement filed by Liberty Oilfield Services Inc. (the "Issuer"). R/C Energy GP IV, LLC ("R/C GP IV") is the sole general partner of Riverstone/Carlyle Energy Partners IV, L.P. ("Riverstone/Carlyle EP IV"), and Riverstone/Carlyle EP IV is the sole general partner of each of R/C Energy IV Direct Partnership, L.P. ("R/C Direct") and R/C IV Liberty Holdings, L.P. ("R/C IV Liberty" and, together with R/C GP IV, Riverstone/Carlyle EP IV and R/C Direct, the "Reporting Persons"). Each of Ken Babcock, N. John Lancaster, Jr., Jesal Shah and Brett Staffieri serves on the board of directors of the Issuer as a representative of the Reporting Persons. As a result, each Reporting Person herein may be deemed a director by deputization for the purposes of Section 16 of the Securities Exchange Act of 1934, as amended.

No securities are beneficially owned.

	RIVERSTONE/CARLYLE ENERGY PARTNERS IV, L.P., By: R/C ENERGY GP IV, LLC, its general partner; NAME: /s/ Thomas Walker	01/11/2018
	** Signature of Reporting Person	Date
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