Sec Form 4 Filing - Sanchez Eduardo Augusto @ Sanchez Energy Corp - 2017-12-13

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 Sanchez Eduardo Augusto 2. Issuer Name and Ticker or Trading Symbol Sanchez Energy Corp [ SN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) X __ Other (specify below) Former President (Last) (First) (Middle) 1000 MAIN STREET, SUITE 3000 3. Date of Earliest Transaction (MM/DD/YY) 12/13/2017 (Street) HOUSTON, TX77002 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 12/13/2017 S( 1 ) 250,337 ( 2 ) D $ 4.661 ( 3 ) 985,644 D Common Stock 175,036 I By 1988 Trust No. 13 ( 4 )

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 Sanchez Eduardo Augusto 1000 MAIN STREET, SUITE 3000 HOUSTON, TX77002 Former President Signatures /s/ Alfredo R. Gutierrez 12/29/2017 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Reporting Person's disposition of a portion of the reported shares may be matchable under Section 16(b) of the Securities Exchange Act of 1934, as amended, to the extent of 25,000 shares of Issuer's common stock, with the purchase, on September 14, 2017, by Reporting Person of 100,000 shares of Issuer's common stock, 25,000 of which has led to a short-swing transaction as a result of the disposition reported on this Form 4. Accordingly, Reporting Person agreed to pay, and has paid, to Issuer the full amount of the profit realized by Reporting Person in connection with the short-swing transaction. ( 2 )The disposition reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan established by Reporting Person and was used to satisfy Reporting Person's federal income tax obligations with respect to the vesting of equity awards. ( 3 )This transaction was executed in multiple trades at prices ranging from $4.746 to $4.540. The price reported above reflects the weighted average sale price. Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, Issuer or a security holder of Issuer full information regarding the number of shares and prices at which the transaction was effected. ( 4 )These shares are owned directly by 1988 Trust No. 13. Reporting Person is a co-trustee, along with A. R. Sanchez, Jr., and a beneficiary of 1988 Trust No. 13. Reporting Person may be deemed to share voting and dispositive power over the shares held by 1988 Trust No. 13. Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership by Reporting Person of the reported securities for purposes of Section 16 or any other purpose.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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