Sec Form 4 Filing - BOLT WILLIAM J @ ABIOMED INC - 2013-05-28

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 BOLT WILLIAM J 2. Issuer Name and Ticker or Trading Symbol ABIOMED INC [ ABMD] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) SVP, QA and Regulatory Affairs (Last) (First) (Middle) C/O ABIOMED, INC., 22 CHERRY HILL DRIVE 3. Date of Earliest Transaction (MM/DD/YY) 05/28/2013 (Street) DANVERS, MA01923 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, $.01 par 05/28/2013 S( 4 ) 4,629 D $ 22.1826 94,435 D Common Stock, $.01 par 05/28/2013 A( 5 ) 11,250 A $ 0 105,685 D

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) ( 1 ) $ 12.3 07/01/2005 07/01/2014 Common Stock 18,000 18,000 D Stock Option (right to buy) ( 1 ) $ 9.36 06/08/2006 06/08/2015 Common Stock 30,000 30,000 D Stock Option (right to buy) ( 1 ) $ 13.57 06/01/2007 06/01/2016 Common Stock 20,000 20,000 D Stock Option (right to buy) ( 1 ) $ 11.27 05/30/2008 05/30/2017 Common Stock 8,000 8,000 D Stock Option (right to buy) ( 3 ) $ 5.86 05/28/2010( 2 ) 05/28/2019 Common Stock 32,000 32,000 D Stock Option (right to buy) ( 3 ) $ 5.86 03/31/2010( 2 ) 05/28/2019 Common Stock 18,000 18,000 D Stock option (right to buy) ( 3 ) $ 13.8 05/23/2009( 2 ) 05/23/2018 Common Stock 9,666 9,666 D Stock Option (right to buy) ( 3 ) $ 10.03 06/03/2011( 2 ) 06/03/2020 Common Stock 30,000 25,000 D Stock Option (right to buy) ( 3 ) $ 22.44 05/22/2013( 2 ) 05/22/2022 Common Stock 20,000 20,000 D Stock Option (Right to Buy) ( 3 ) $ 23.15 05/14/2014( 2 ) 05/14/2024 Common stock 20,000 20,000 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other BOLT WILLIAM J C/O ABIOMED, INC. 22 CHERRY HILL DRIVE DANVERS, MA01923 SVP, QA and Regulatory Affairs Signatures /s/ Ian W. McLeod (by power of attorney) 05/30/2013 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Grant to reporting person of this option to buy the number of Common Stock set forth in Table II, Column 7, under the ABIOMED, Inc. 2000 Stock Incentive Plan. ( 2 )These options become exercisable in annual 25% increments, commencing on the date shown in Table II, Column 6. ( 3 )Grant to reporting person of this option to buy the number of Common Stock set forth in Table II, Column 7, under the ABIOMED, Inc. 2008 Stock Incentive Plan. ( 4 )Sale of common stock pursuant to reporting owner's 10b5-1 plan. Sold to pay tax obligations upon vesting. ( 5 )These restricted stock units will vest in 50% increments, the first 50% on May 22, 2014 and the remaining 50% on May 22, 2015.

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

* 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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