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 * Hairford Matthew V   2. Issuer Name and Ticker or Trading Symbol Matador Resources Co [MTDR] 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) 5400 LBJ FREEWAY, SUITE 1500 3. Date of Earliest Transaction (Month/Day/Year) 02/15/2019 (Street) DALLAS, TX 75240 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 02/15/2019   F   4,764 (1) D $ 19.31 98,609 D   Common Stock 02/16/2019   F   6,188 (2) D $ 19.31 92,421 D   Common Stock 02/19/2019   F   12,589 (3) D $ 18.7 79,832 (4) (5) D   Common Stock               262,618 (6) I See footnote (7) Common Stock               5,000 I Represents shares held of record by the reporting person's Individual Retirement Account.

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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
Hairford Matthew V 5400 LBJ FREEWAY SUITE 1500 DALLAS, TX 75240			President

Signatures

/s/ Matthew V. Hairford, by Kyle A. Ellis as attorney-in-fact		02/20/2019
**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)	Represents shares withheld by the Issuer in connection with the reporting person's net share settlement to satisfy tax liability upon the vesting of 12,106 shares of restricted stock that were granted to the reporting person on February 15, 2017. No shares were sold by the reporting person to satisfy this tax liability.
(2)	Represents shares withheld by the Issuer in connection with the reporting person's net share settlement to satisfy tax liability upon the vesting of 15,723 shares of restricted stock that were granted to the reporting person on February 16, 2018. No shares were sold by the reporting person to satisfy this tax liability.
(3)	Represents shares withheld by the Issuer in connection with the reporting person's net share settlement to satisfy tax liability upon the vesting of 31,992 shares of restricted stock that were granted to the reporting person on February 19, 2016. No shares were sold by the reporting person to satisfy this tax liability.
(4)	Includes 31,446 shares of restricted stock granted to the reporting person on February 16, 2018 that vest in equal annual installments on the second and third anniversaries of the date of grant.
(5)	Includes 12,106 shares of restricted stock granted to the reporting person on February 15, 2017 that vest on the third anniversary of the date of grant.
(6)	The reporting person states that neither the filing of this statement nor anything herein shall be deemed an admission that such person is, for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise, the beneficial owner of these shares. The reporting person disclaims beneficial ownership of these shares, except to the extent of his pecuniary interest therein.
(7)	Represents shares held of record by the Hairford Family Trust for which both the reporting person and his spouse are trustees.

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