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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
350907	Thoratec Corp	THOR	Electromedical & Electrotherapeutic Apparatus (3845)	942340464

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1218700	Lawrence Cohen	6035 Stoneridge Drive Pleasanton CA 94588	Division President	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	Acquisiton	2010-03-25	20,000	$12.45	52,329	No	4	M	Direct
Common Stock	Disposition	2010-03-25	20,000	$34.50	32,329	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	Non-Qualified Stock Option (right to buy)	Disposition	2010-03-25	20,000	$0.00	20,000	$12.45

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
27,387	2004-10-14	2014-04-14	No	4	M	Direct

Footnotes

Options and restricted stock units were granted pursuant to the Company's equity incentive plan with no payments received for either.
Options exercised and shares of Common Stock sold pursuant to a Sales Plan established by the Reporting Person on August 10, 2009, which Sales Plan is intended to comply with the requirements of Rule 10b5-1(c)(1) under the Securities Exchange Act of 1934, as amended.
Options vest in six equal installments commencing 6 months after the grant date.