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 OF SECURITIES 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 * WEXFORD CAPITAL LP   2. Issuer Name and Ticker or Trading Symbol Diamondback Energy, Inc. [FANG] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 411 WEST PUTNAM AVENUE, SUITE 125 3. Date of Earliest Transaction (Month/Day/Year) 09/08/2015 (Street) GREENWICH, CT 06830 4. If Amendment, Date 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 (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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 Common Stock, par value $0.01               77,054 D   Common Stock, par value $0.01 09/08/2015   S   11,853 (1) D $ 67.5311 461,143 I See footnotes (2) (3) Common Stock, par value $0.01 09/09/2015   S   35,580 (1) D $ 67.9417 425,563 I See footnotes (2) (3) Common Stock, par value $0.01 09/10/2015   S   2,000 (1) D $ 66.9177 423,563 I See footnotes (2) (3)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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 (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

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 (Month/Day/Year)

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 Form 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
WEXFORD CAPITAL LP 411 WEST PUTNAM AVENUE SUITE 125 GREENWICH, CT 06830	X
JACOBS JOSEPH C/O WEXFORD CAPITAL LP 411 WEST PUTNAM AVENUE, SUITE 125 GREENWICH, CT 06830		X
DAVIDSON CHARLES E C/O WEXFORD CAPITAL LP 411 WEST PUTNAM AVE. GREENWICH, CT 06830		X
Wexford GP LLC C/O WEXFORD CAPITAL LP SUITE 125 GREENWICH, CT 06830		X

Signatures

Wexford Capital LP, By: Wexford GP LLC, its general partner By: Arthur Amron, Vice President and Assistant Secretary		09/10/2015
**Signature of Reporting Person		Date
Wexford GP LLC, By: Arthur Amron, Vice President and Assistant Secretary		09/10/2015
**Signature of Reporting Person		Date
Charles E. Davidson		09/10/2015
**Signature of Reporting Person		Date
Joseph M. Jacobs		09/10/2015
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	The securities disposed of were held by DB Energy Holdings LLC ("DB Energy"), Wexford Catalyst Fund, L.P. ("WCF"), Wexford Spectrum Fund, L.P. ("WSF"), Spectrum Intermediate Fund Limited ("SIF") and Catalyst Intermediate Fund Limited ("CIF" and, together with DB Energy, WCF, WSF and SIF, the "Funds").
(2)	This form is jointly filed by Wexford, Charles E. Davidson ("Davidson"), Joseph M. Jacobs ("Jacobs"), and Wexford GP LLC ("Wexford GP"). The common stock shown as beneficially owned by Davidson, Jacobs, Wexford GP and Wexford reflect common stock owned of record by the Funds. Wexford serves as manager, investment advisor or sub advisor of each of the Funds, and as such may be deemed to share beneficial ownership of the securities beneficially owned by the Funds. Wexford GP, as the general partner of Wexford, may be deemed to share beneficial ownership of the securities beneficially owned by the Funds. (continued under Footnote (3) below)
(3)	(continued from Footnote (2) above) Davidson and Jacobs, as the controlling persons of Wexford GP, may be deemed to share beneficial ownership of any securities beneficially owned by the Funds for which Wexford serves as manager, investment advisor or sub advisor. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of his or its actual pecuniary interest therein.

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