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 *
Plaumann Mark Lawrence
  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)
500 WEST TEXAS, SUITE 1225
3. Date of Earliest Transaction (Month/Day/Year)
07/15/2014
(Street)

MIDLAND, TX 79701
4. If Amendment, Date Original Filed(Month/Day/Year)
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 (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 07/15/2014   A   2,802 (1) A $ 0 9,468 (2) D  

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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
Plaumann Mark Lawrence
500 WEST TEXAS
SUITE 1225
MIDLAND, TX 79701
  X      

Signatures

 /s/ Randall J. Holder, as attorney-in-fact for Mark L. Plaumann   07/17/2014
**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) These securities are restricted stock units that were granted under Diamondback Energy, Inc.'s (the "Issuer") 2012 Equity Incentive Plan. 934 of these restricted stock units vested on July 15, 2014, and the remaining 1,868 resticted stock units will vest in two equal annual installments beginning on July 1, 2015. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer, par value $0.01 per share. These restricted stock units have been assigned by Mr. Plaumann to Greyhawke Capital Advisors LLC, of which Mr. Plaumann is the principal and, as a result, Mr. Plaumann may be deemed to have pecuniary interest in these securities.
(2) This number includes 6,666 shares of common stock underlying restricted stock units granted in connection with the Issuer's IPO, which were previously reported in Table II. Of these 6,666 shares underlying restricted stock units, 4,444 have vested, and the remaining 2,222 restricted stock units will vest on October 11, 2014. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer, par value $0.01 per share.

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