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 OF SECURITIES 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 Field Service (Last) (First) (Middle) C/O ABIOMED, INC., 22 CHERRY HILL DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 06/20/2005 (Street) DANVERS, MA 01923 4. If Amendment, Date Original Filed(Month/Day/Year) 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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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 value               2,000 D   Common Stock, $.01 par value 06/20/2005   M   5,000 (8) A $ 5.313 7,000 D   Common Stock, $.01 par value 06/20/2005   S   5,000 (8) A $ 10.5 2,000 D

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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 (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

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 (Month/Day/Year)

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)

$ 5.313

06/20/2005

M

5,000 (8)

12/14/2000(1)

12/14/2005

Common Stock

5,000

$ 10.5

5,526

D

Stock Option (right to buy) (2)

$ 6.25

08/12/2001(1)

08/12/2006

Common Stock

20,000

20,000

D

Stock Option (right to buy) (2)

$ 6.688

07/01/2003(1)

07/01/2009

Common Stock

20,000

20,000

D

Stock Option (right to buy) (3)

$ 15.563

06/28/2004(1)

06/28/2010

Common Stock

40,000

40,000

D

Stock Option (right to buy) (4)

$ 24.12

06/22/2005(1)

06/22/2011

Common Stock

25,000

25,000

D

Stock Option (right to buy) (4)

$ 6.75

06/25/2004(5)

06/25/2012

Common Stock

50,000

50,000

D

Stock Option (right to buy) (3)

$ 5.11

06/25/2005(6)

06/25/2013

Common Stock

16,000

16,000

D

Stock Option (right to buy) (4)

$ 12.3

07/01/2005(7)

07/01/2014

Common Stock

18,000

18,000

D

Stock Option (right to buy) (4)

$ 9.36

06/08/2006(7)

06/08/2015

Common Stock

30,000

30,000

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, MA 01923			SVP, QA and Field Service

Signatures

/s/ Charles B. Haaser (Attorney-in-fact)		06/22/2005
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	Options were fully exercisable on the date shown.
(2)	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. 1992 Combination Stock Option Plan.
(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. 1998 Equity Incentive Plan.
(4)	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.
(5)	Thirty percent of this option will become exercisable on each of 6/25/04 and 6/25/05 and an addtional 40 percent will become exercisable on 6/25/06.
(6)	Thirty percent of this option will become exercisable on each of 6/25/05 and 6/25/06 and an addtional 40 percent will become exercisable on 6/25/07.
(7)	These options become exercisable in annual 25% increments, commencing on the date shown in Table II, Column 6.
(8)	Stock was acquired and sold pursuant to a Sales Plan compliant with the requirements of SEC Rule 10b5-1.

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