Sec Form 4 Filing - NGP XI US Holdings, L.P. @ WildHorse Resource Development Corp - 2019-02-01

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 NGP XI US Holdings, L.P. 2. Issuer Name and Ticker or Trading Symbol WildHorse Resource Development Corp [ WRD] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 5221 N. O'CONNOR BLVD., SUITE 1100 3. Date of Earliest Transaction (MM/DD/YY) 02/01/2019 (Street) IRVING, TX75039 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (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 02/01/2019 D 9,000,000 D 0 ( 3 ) ( 4 ) ( 5 ) ( 6 ) ( 7 ) D ( 3 ) ( 4 ) ( 5 ) ( 6 ) ( 7 ) Common Stock 02/01/2019 D 29,262,975 ( 3 ) ( 4 ) ( 5 ) D 0 ( 3 ) ( 4 ) ( 5 ) ( 6 ) ( 7 ) I See Footnotes ( 3 ) ( 4 ) ( 5 ) ( 6 ) ( 7 )

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 NGP XI US Holdings, L.P. 5221 N. O'CONNOR BLVD., SUITE 1100 IRVING, TX75039 X NGP XI Holdings GP, L.L.C. 5221 N. O'CONNOR BLVD., SUITE 1100 IRVING, TX75039 X NGP Natural Resources XI, L.P. 5221 N. O'CONNOR BLVD., SUITE 1100 IRVING, TX75039 X G.F.W. Energy XI, L.P. 5221 N. O'CONNOR BLVD., SUITE 1100 IRVING, TX75039 X GFW XI, L.L.C. 5221 N. O'CONNOR BLVD., SUITE 1100 IRVING, TX75039 X NGP Energy Capital Management, L.L.C. 5221 N. O'CONNOR BLVD., SUITE 1100 IRVING, TX75039 X Signatures /s/ Tony R. Weber, Authorized Person of NGP XI Holdings GP, L.L.C., the general partner of NGP XI US Holdings, L.P. 02/05/2019 Signature of Reporting Person Date /s/ Tony R. Weber, Authorized Person of NGP XI Holdings GP, L.L.C. 02/05/2019 Signature of Reporting Person Date /s/ Tony R. Weber, Authorized Person of GFW XI, L.L.C., the general partner of G.F.W. Energy XI, L.P., the general partner of NGP Natural Resources XI, L.P. 02/05/2019 Signature of Reporting Person Date /s/ Tony R. Weber, Authorized Person of GFW XI, L.L.C., the general partner of G.F.W. Energy XI, L.P. 02/05/2019 Signature of Reporting Person Date /s/ Tony R. Weber, Authorized Person of GFW XI, L.L.C. 02/05/2019 Signature of Reporting Person Date /s/ Tony R. Weber, Chief Operating Officer of NGP Energy Capital Management, L.L.C. 02/05/2019 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On February 1, 2019, pursuant to the Agreement and Plan of Merger dated as of October 29, 2018 (the "Merger Agreement"), by and among WildHorse Resource Development Corporation (the "Company"), Chesapeake Energy Corporation ("Chesapeake") and Coleburn Inc. ("Merger Sub"), as amended, Merger Sub merged with an into the Company (the "Merger"), with the Company surviving the Merger and continuing as a wholly-owned subsidiary of Chesapeake. ( 2 )Pursuant to the Merger Agreement, each share of Company common stock issued and outstanding prior to the effective time of the Merger owned by the Reporting Person was converted at such time into the right to receive either (i) 5.336 shares of Chesapeake common stock and $3.00 in cash, or (ii) 5.989 shares of Chesapeake common stock, in each case, with cash in lieu for any fractional shares. The closing price per share of Chesapeake common stock on the day prior to the effective date of the Merger was $2.85. ( 3 )This form is jointly filed by NGP XI US Holdings, L.P. ("NGP XI US Holdings"), NGP XI Holdings GP, L.L.C. ("NGP XI Holdings GP"), NGP Natural Resources XI, L.P. ("NGP Natural Resources XI"), G.F.W. Energy XI, L.P. ("GFW Energy XI"), GFW XI, L.L.C. ("GFW XI") and NGP Energy Capital Management, L.L.C. ("NGP ECM"). On December 12, 2016, Esquisto Holdings, LLC ("Esquisto Holdings") and WHE AcqCo Holdings, LLC ("Acquisition Co. Holdings") entered into a Master Contribution Agreement, pursuant to which, immediately prior to the closing of the Company's initial public offering, certain of the parties thereto, including Esquisto Holdings and Acquisition Co. Holdings, contributed their membership interest in certain entities to the Company in exchange for shares of the Company's common stock. ( 4 )(Continued from Footnote 3) Immediately prior to the effective time of the Merger, Esquisto Holdings and Acquisition Co. Holdings held 26,699,709 shares and 2,563,266 shares of common stock of the Company, respectively. Esquisto Investment Holdings, LLC ("Esquisto Investment Holdings") owns 100% of the capital interests in Esquisto Holdings, and NGP XI US Holdings has shared rights to appoint a majority of the board of managers of Esquisto Investment Holdings. Further, NGP XI US Holdings owns 100% of the capital interests in Acquisition Co. Holdings. As a result, NGP XI US Holdings may be deemed to indirectly beneficially own the shares held by each of Esquisto Holdings and Acquisition Co. Holdings. NGP XI US Holdings disclaims beneficial ownership of these shares except to the extent of its pecuniary interest therein. ( 5 )(Continued from Footnote 4) NGP XI Holdings GP (the sole general partner of NGP XI US Holdings), NGP Natural Resources XI (the sole member of NGP XI Holdings GP), G.F.W. Energy XI (the sole general partner of NGP Natural Resources XI) and GFW XI (the sole general partner of GFW Energy XI) may each be deemed to share voting and dispositive power over the reported shares and therefore may also be deemed to be the beneficial owner of these shares. GFW XI has delegated full power and authority to manage NGP XI US Holdings to NGP ECM and accordingly, NGP ECM may be deemed to share voting and dispositive power over these shares and therefore may also be deemed to be the beneficial owner of these shares. Each of NGP XI Holdings GP, NGP Natural Resources XI, GFW Energy XI, GFW XI and NGP ECM disclaims beneficial ownership of the reported securities in excess of its pecuniary interest therein. ( 6 )Prior to the effective time of the Merger, Esquisto Holdings and Acquisition Co. Holdings were parties to a Stockholders' Agreement (the "Stockholders' Agreement"), pursuant to which, each of the parties thereto agreed, among other things, to cause the shares of Company common stock and any equity securities of the Comapny held by such party to be voted for the individuals properly designated by the parties to the Stockholders' Agreement for election to the Company's board of directors. As a result, the parties thereto may have been deemed to be members of a group holding over 10% of the outstanding common stock of the Company (the "Group") for the purposes of Section 13(d)(3) of the Exchange Act of 1934, as amended (the "Exchange Act"). ( 7 )NGP XI US Holdings disclaims beneficial ownership of the shares of Company common stock held by the members of the Group, except to the extent of its pecuniary interest therein, and this statement shall not be construed as an admission that NGP XI US Holdings is or was the beneficial owner of any such shares for purposes of Section 16 of the Exchange Act or for any other purpose.

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