Sec Form 4 Filing - LEIDEL PETER A @ Extraction Oil & Gas, Inc. - 2019-05-15

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 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 LEIDEL PETER A 2. Issuer Name and Ticker or Trading Symbol Extraction Oil & Gas, Inc. [ XOG] 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) 370 17TH STREET, SUITE 5300 3. Date of Earliest Transaction (MM/DD/YY) 05/15/2019 (Street) DENVER, CO80202 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 05/15/2019 A 31,553 ( 1 ) A $ 0 174,572 D COMMON STOCK 20,340,747 ( 2 ) I See Footnote (2) COMMON STOCK 17,554,262 ( 3 ) I See Footnote (3) COMMON STOCK 4,309,079 ( 4 ) I See Footnote (4) COMMON STOCK 7,700,358 ( 5 ) I See Footnote (5)

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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 LEIDEL PETER A 370 17TH STREET SUITE 5300 DENVER, CO80202 X Signatures /s/ Eric J. Christ, Attorney-in-Fact 05/30/2019 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents an award of 31,553 unvested restricted stock units, which vest on May 15, 2020, subject to continued service through the vesting date, and will be settled in shares of common stock. ( 2 )These shares are directly owned by YT Extraction Co Investment Partners, LP. YT Extraction Company LP is the sole general partner of YT Extraction Co Investment Partners, LP. YT Extraction Associates LLC is the sole general partner of YT Extraction Company LP. As a result, YT Extraction Associates LLC may be deemed to share the power to vote or direct the vote or to dispose or direct the disposition of the common stock owned by YT Extraction Co Investment Partners, LP. YT Extraction Company LP and YT Extraction Associates LLC disclaim beneficial ownership of the common stock held by YT Extraction Co Investment Partners, LP in excess of their pecuniary interest therein. Peter A. Leidel is a manager of YT Extraction Associates LLC. Mr. Leidel disclaims beneficial ownership of the common stock held by YT Extraction Co Investment Partners, LP. ( 3 )These shares are directly owned by Yorktown Energy Partners X, L.P. Yorktown X Company LP is the sole general partner of Yorktown Energy Partners X, L.P. Yorktown X Associates LLC is the sole general partner of Yorktown X Company LP. As a result, Yorktown X Associates LLC may be deemed to share the power to vote or direct the vote or to dispose or direct the disposition of the common stock owned by Yorktown Energy Partners X, L.P. Yorktown X Company LP and Yorktown X Associates LLC disclaim beneficial ownership of the common stock held by Yorktown Energy Partners X, L.P. in excess of their pecuniary interest therein. Mr. Leidel is a manager of Yorktown X Associates LLC. Mr. Leidel disclaims beneficial ownership of the common stock held by Yorktown Energy Partners X, L.P. ( 4 )These shares are directly owned by Yorktown Energy Partners XI, L.P. Yorktown XI Company LP is the sole general partner of Yorktown Energy Partners XI, L.P. Yorktown XI Associates LLC is the sole general partner of Yorktown XI Company LP. As a result, Yorktown XI Associates LLC may be deemed to share the power to vote or direct the vote or to dispose or direct the disposition of the common stock owned by Yorktown Energy Partners XI, L.P. Yorktown XI Company LP and Yorktown XI Associates LLC disclaim beneficial ownership of the common stock held by Yorktown Energy Partners XI, L.P. in excess of their pecuniary interest therein. Mr. Leidel is a manager of Yorktown XI Associates LLC. Mr. Leidel disclaims beneficial ownership of the common stock held by Yorktown Energy Partners XI, L.P. ( 5 )These shares are directly owned by Yorktown Energy Partners IX, L.P. Yorktown IX Company LP is the sole general partner of Yorktown Energy Partners IX, L.P. Yorktown IX Associates LLC is the sole general partner of Yorktown IX Company LP. As a result, Yorktown IX Associates LLC may be deemed to share the power to vote or direct the vote or to dispose or direct the disposition of the common stock owned by Yorktown Energy Partners IX, L.P. Yorktown IX Company LP and Yorktown IX Associates LLC disclaim beneficial ownership of the common stock held by Yorktown Energy Partners IX, L.P. in excess of their pecuniary interest therein. Mr. Leidel is a manager of Yorktown IX Associates LLC. Mr. Leidel disclaims beneficial ownership of the common stock held by Yorktown Energy Partners IX, L.P.

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