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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
1399519	M David Weber	C/O Abiomed, Inc. 22 Cherry Hill Drive Danvers MA 01923	Chief Operating Officer	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	2012-05-01	11,000	$5.86	131,380	No	4	M	Direct
Common Stock, $.01 Par Value	Disposition	2012-05-01	11,000	$25.00	120,380	No	4	S	Direct

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

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Option (right to buy)	Disposition	2012-05-01	11,000	$0.00	11,000	$5.86

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
65,000	2010-05-28	2019-05-28	No	4	M	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)	$13.88	2008-04-23	2017-04-23	130,000	130,000	Direct
Common Stock	Stock Option (right to buy)	$13.80	2009-05-23	2018-05-23	12,000	12,000	Direct
Common Stock	Stock Options (right to buy)	$5.86	2010-03-31	2019-05-28	34,500	34,500	Direct
Common Stock	Stock Option (right to buy)	$10.03	2011-06-03	2020-06-03	50,000	50,000	Direct

Expiration Date	Amount	Remaning Holdings	Nature of Ownership
2017-04-23	130,000	130,000	Direct
2018-05-23	12,000	12,000	Direct
2019-05-28	34,500	34,500	Direct
2020-06-03	50,000	50,000	Direct

Footnotes

Grant to reporting person of option to buy the number of shares of Common Stock set forth in Table II, Column 7, under the ABIOMED, Inc. 2000 Stock Incentive Plan.
This option becomes exercisable in annual 25% increments, commencing on the date shown in Table II, Column 6.
Grant to reporting person of option to buy the number of shares of Common Stock set forth in Table II, Column 7, under the ABIOMED, Inc. 2008 Stock Incentive Plan.
These options became exerciseable in full on March 31, 2010.
Sale of common stock pursuant to reporting owner's 10(b)5-1 plan.