Sec Form 4 Filing - SANCHEZ ANTONIO R JR @ Sanchez Energy Corp - 2013-03-27

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 ANTONIO R JR 2. Issuer Name and Ticker or Trading Symbol Sanchez Energy Corp [ SN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner X __ Officer (give title below) _____ Other (specify below) Exec. Chairman Board of Direc. (Last) (First) (Middle) 1111 BAGBY STREET, SUITE 1800 3. Date of Earliest Transaction (MM/DD/YY) 03/27/2013 (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 03/27/2013 S 158,250 D $ 19.277 ( 1 ) 0 I By Sanchez Energy Partners I, LP ( 2 ) Common Stock 03/27/2013 S 91,750 D $ 19.277 ( 1 ) 1,141,106 I By Sanchez Oil & Gas Corporation ( 3 ) Common Stock 707,333 I By Sanexco, Ltd. ( 4 ) Common Stock 911,856 D Common Stock 371,836 I By 1988 Trust No. 11 ( 5 ) Common Stock 371,836 I By 1988 Trust No. 12 ( 5 ) Common Stock 371,836 I By 1988 Trust No. 13 ( 5 ) Common Stock 371,836 I By 1988 Trust No. 14 ( 5 ) Common Stock 707,333 I By San Juan Oil & Gas No. 2, Ltd. ( 6 ) Common Stock 474,800 I By AEP Ltd. Partnership ( 7 ) Common Stock 113,366 I By SEP Management I, LLC ( 8 )

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 ANTONIO R JR 1111 BAGBY STREET, SUITE 1800 HOUSTON, TX77002 X X Exec. Chairman Board of Direc. Signatures /s/ Alfredo Gutierrez, Attorney-in-Fact 03/29/2013 Signature of Reporting Person Date

Explanation of Responses:

( 1 )This transaction was executed in multiple trades at prices ranging from $19.00 to $19.93. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. ( 2 )These shares are owned directly by Sanchez Energy Partners I, LP ("SEP I"). SEP I is controlled by its general partner, SEP Management I, LLC ("SEP Management"), which is a wholly-owned subsidiary of Sanchez Oil & Gas Corporation ("SOG"). SOG is managed by A. R. Sanchez, Jr. and Antonio R. Sanchez, III. A. R. Sanchez, Jr. may be deemed to share voting and dispositive power over the shares held by SEP I. A. R. Sanchez, Jr. 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 A. R. Sanchez, Jr. of the reported securities for purposes of Section 16 or any other purpose. ( 3 )These shares are owned directly by SOG. SOG is managed by A. R. Sanchez, Jr. and Antonio R. Sanchez, III. A. R. Sanchez, Jr. may be deemed to share voting and dispositive power over the shares held by SOG. A. R. Sanchez, Jr. 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 A. R. Sanchez, Jr. of the reported securities for purposes of Section 16 or any other purpose. ( 4 )These shares are owned directly by Sanexco, Ltd. ("Sanexco"). Sanexco is controlled by its general partner, Sanchez Management Corporation ("SMC"), which is managed by A. R. Sanchez, Jr. A. R. Sanchez, Jr. may be deemed to share voting and dispositive power over the shares held by Sanexco. A. R. Sanchez, Jr. 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 A. R. Sanchez, Jr. of the reported securities for purposes of Section 16 or any other purpose. ( 5 )These shares are owned directly by the following trusts (the "Trusts"), respectively: (i) 1988 Trust No. 11: co-trustee/beneficiary Antonio R. Sanchez, III; (ii) 1988 Trust No. 12: co-trustee/beneficiary Ana Lee Sanchez Jacobs; (iii) 1988 Trust No. co-trustee/beneficiary Eduardo Sanchez; and (iv) 1988 Trust No. co-trustee/beneficiary Patricio Sanchez. A. R. Sanchez, Jr. is a co-trustee, along with the respective co-trustees and beneficiaries listed next to the name of the Trust above, of each of the Trusts set forth above. A. R. Sanchez, Jr. may be deemed to share voting and dispositive power over the shares held by the Trusts. A. R. Sanchez, Jr. 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 A. R. Sanchez, Jr. of the reported securities for purposes of Section 16 or any other purpose. ( 6 )These shares are owned directly by San Juan Oil & Gas No. 2, Ltd. ("San Juan"). San Juan is controlled by its general partner, SMC, which is managed by A. R. Sanchez, Jr. A. R. Sanchez, Jr. may be deemed to share voting and dispositive power over the shares held by San Juan. A. R. Sanchez, Jr. 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 A. R. Sanchez, Jr. of the reported securities for purposes of Section 16 or any other purpose. ( 7 )These shares are owned directly by AEP Ltd. Partnership ("AEP"). AEP is controlled by its general partner, A. R. Sanchez, Jr. A. R. Sanchez, Jr. may be deemed to share voting and dispositive power over the shares held by AEP. A. R. Sanchez, Jr. 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 A. R. Sanchez, Jr. of the reported securities for purposes of Section 16 or any other purpose. ( 8 )These shares are owned directly by SEP Management. SEP Management is a wholly-owned subsidiary of SOG. SOG is managed by A. R. Sanchez, Jr. and Antonio R. Sanchez, III. A. R. Sanchez, Jr. may be deemed to share voting and dispositive power over the shares held by SEP Management. A. R. Sanchez, Jr. 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 A. R. Sanchez, Jr. 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).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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