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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
815094	Abiomed Inc	ABMD	Surgical & Medical Instruments & Apparatus (3841)	042743260

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1199632	J William Bolt	C/O Abiomed, Inc. 22 Cherry Hill Drive Danvers MA 01923	Svp, Qa And Regulatory Affairs	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock, $.01 Par Value	Acquisiton	2012-04-26	511	$9.38	95,298	No	4	A	Direct
Common Stock, $.01 Par Value	Disposition	2012-04-26	8,393	$24.00	86,905	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	A	Direct
No	4	S	Direct

Reported Derivative Holdings

Sec. Name	Sec. Type	Price	Date	Expiration Date	Amount	Remaning Holdings	Nature of Ownership
Common Stock	Stock Option (right to buy)	$15.56	2004-06-28	2010-06-28	40,000	40,000	Direct
Common Stock	Stock Option (right to buy)	$24.12	2005-06-22	2011-06-22	25,000	25,000	Direct
Common Stock	Stock Option (right to buy)	$12.30	2005-07-01	2014-07-01	18,000	18,000	Direct
Common Stock	Stock Option (right to buy)	$9.36	2006-06-08	2015-06-08	30,000	30,000	Direct
Common Stock	Stock Option (right to buy)	$13.57	2007-06-01	2016-06-01	20,000	20,000	Direct
Common Stock	Stock Option (right to buy)	$11.27	2008-05-30	2017-05-30	8,000	8,000	Direct
Common Stock	Stock Option (right to buy)	$5.86	2010-05-28	2019-05-28	32,000	32,000	Direct
Common Stock	Stock Option (right to buy)	$5.86	2010-03-31	2019-05-28	18,000	18,000	Direct
Common Stock	Stock option (right to buy)	$13.80	2009-05-23	2018-05-23	9,666	9,666	Direct
Common Stock	Stock Option (right to buy)	$10.03	2011-06-03	2020-06-03	30,000	25,000	Direct

Expiration Date	Amount	Remaning Holdings	Nature of Ownership
2010-06-28	40,000	40,000	Direct
2011-06-22	25,000	25,000	Direct
2014-07-01	18,000	18,000	Direct
2015-06-08	30,000	30,000	Direct
2016-06-01	20,000	20,000	Direct
2017-05-30	8,000	8,000	Direct
2019-05-28	32,000	32,000	Direct
2019-05-28	18,000	18,000	Direct
2018-05-23	9,666	9,666	Direct
2020-06-03	30,000	25,000	Direct

Footnotes

Options were fully exercisable on the date shown.
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.
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.
These options become exercisable in annual 25% increments, commencing on the date shown in Table II, Column 6.
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.
These options became fully exerciseable on March 31, 2010.
Sale of common stock pursuant to reporting owner's 10(b)5-1 plan.
Shares of common stock were acquired by the reporting person therough participation in the ABIOMED, Inc. Employee Stock Purchase Plan, qualified under Section 423 of the Internal Reveunue Code