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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
1347405	Robert Bowen	C/O Abiomed, Inc 22 Cherry Hill Dr Danvers MA 01923	Chief Financial 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	2012-08-06	15,000	$10.03	76,334	No	4	M	Direct
Common Stock , $.01 Par Value	Disposition	2012-08-06	15,000	$23.38	61,334	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	2012-08-06	15,000	$0.00	15,000	$10.03

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
15,000	2011-06-03	2020-06-03	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)	$15.92	2009-12-22	2018-12-22	100,000	100,000	Direct
Common Stock	Stock Option (right to buy)	$5.86	2010-05-28	2019-05-28	60,000	45,000	Direct
Common Stock	Stock Option (right to buy)	$5.86	2010-03-31	2019-05-28	30,000	30,000	Direct
Common Stock	Stock Option (right to buy)	$22.44	2013-05-22	2022-05-22	20,000	20,000	Direct

Expiration Date	Amount	Remaning Holdings	Nature of Ownership
2018-12-22	100,000	100,000	Direct
2019-05-28	60,000	45,000	Direct
2019-05-28	30,000	30,000	Direct
2022-05-22	20,000	20,000	Direct

Footnotes

Grant to reporting person of option to buy the number of shares of common stock set forth on Table II, Column 7, under the Abiomed, Inc. 2008 Stock Incentive Plan.
These options become exerciseable in annual 25% increments, commencing on the date set forth in Table II, Column 6.
Sale of common stock pursuant to reporting owner's 10(b)5-1 plan.
This price represents the weighted average sale price of multiple transactions on the reported date at prices that ranged between $22.7400 and $23.4800. Detailed information regarding the number of shares sold at each separate price will be provided upon request by the Commission staff, the Issuer, or a security holder of the Issuer.