Ownership Submission
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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(Print or Type Responses)
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)
12/09/2015
(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 12/09/2015   S   9,822 (1) D $ 76.7357 67,232 D (2)  

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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      
DAVIDSON CHARLES E
C/O WEXFORD CAPITAL LP
411 WEST PUTNAM AVE.
GREENWICH, CT 06830
    X    
JACOBS JOSEPH
C/O WEXFORD CAPITAL LP
411 WEST PUTNAM AVENUE, SUITE 125
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   12/10/2015
**Signature of Reporting Person Date

 Wexford GP LLC, By: Arthur Amron, Vice President and Assistant Secretary   12/10/2015
**Signature of Reporting Person Date

 Joseph M. Jacobs   12/10/2015
**Signature of Reporting Person Date

 Charles E. Davidson   12/10/2015
**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 Wexford Capital LP ("Wexford").
(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 reflects common stock owned of record by Wexford. Wexford GP, as the general partner of Wexford, may be deemed to share beneficial ownership of the securities beneficially owned by Wexford. Davidson and Jacobs, as the controlling persons of Wexford GP, may be deemed to share beneficial ownership of any securities beneficially owned by Wexford. Each of Davidson, Jacobs, and Wexford GP disclaims beneficial ownership of the securities reported herein, except to the extent of his or its actual pecuniary interest therein.

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