Sec Form 4 Filing - Cook John S @ HORNBECK OFFSHORE SERVICES INC /LA - 2012-12-10

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 Cook John S 2. Issuer Name and Ticker or Trading Symbol HORNBECK OFFSHORE SERVICES INC /LA [ HOS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Senior Vice President & CIO (Last) (First) (Middle) 103 NORTHPARK BOULEVARD, SUITE 300 3. Date of Earliest Transaction (MM/DD/YY) 12/10/2012 (Street) COVINGTON, LA70433 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 12/10/2012 M 3,600 ( 1 ) A $ 11.2 78,600 ( 7 ) D COMMON STOCK 12/10/2012 S 3,600 ( 1 ) D $ 35.996 ( 2 ) 75,000 D COMMON STOCK 12/10/2012 M 4,000 ( 3 ) A $ 13.825 79,000 D COMMON STOCK 12/10/2012 S 4,000 ( 3 ) D $ 35.969 ( 4 ) 75,000 D COMMON STOCK 50 I By UGMA custodian for children

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 STOCK OPTION (RIGHT TO BUY) $ 11.2 12/10/2012 M 3,600 ( 5 ) 03/13/2013 COMMON STOCK 3,600 $ 0 0 D STOCK OPTION (right to buy) $ 13.825 12/10/2012 M 4,000 ( 6 ) 02/17/2004 COMMON STOCK 4,000 $ 0 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Cook John S 103 NORTHPARK BOULEVARD, SUITE 300 COVINGTON, LA70433 Senior Vice President & CIO Signatures /s/ Paul M. Ordogne, as poa for John S. Cook 12/12/2012 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents a broker-assisted exercise and sale of an employee stock option award granted to the reporting person on March 13, 2003 that would expire on March 13, 2013. ( 2 )The price represents the weighted average sale price for multiple transactions reported on this line. Sale prices ranged from $35.990 to $35.998. Reporting Person will provide, upon request by the Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares purchased at each separate purchase price. ( 3 )Represents a broker-assisted exercise and sale of an employee stock option award granted to the reporting person on February 17, 2004 that would expire on February 17, 2014. ( 4 )The price represents the weighted average sale price for multiple transactions reported on this line. Sale prices ranged from $35.962 to $35.974. Reporting Person will provide, upon request by the Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares purchased at each separate purchase price. ( 5 )The option provides for vesting in three equal annual installments on the 1st, 2nd and 3rd anniversaries of the March 13, 2003 Grant Date. ( 6 )The option provides for vesting in three equal annual installments on the 1st, 2nd and 3rd anniversaries of the February 17, 2004 Grant Date. ( 7 )Includes 482 shares acquired under the Company's employee stock purchase plan on June 30, 2012.

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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