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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1323885	Atricure Inc.	ATRC	Surgical & Medical Instruments & Apparatus (3841)	341940305

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1336061	Frederick Preiss	6217 Centre Park Drive West Chester OH 45069	Vice President Operations	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
Common Stock	Acquisiton	2011-06-14	14,687	$9.50	38,687	No	4	M	Direct
Common Stock	Acquisiton	2011-06-14	3,680	$5.60	42,367	No	4	M	Direct
Common Stock	Acquisiton	2011-06-14	21,052	$11.63	63,419	No	4	M	Direct
Common Stock	Disposition	2011-06-14	39,419	$14.07	24,000	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	M	Direct
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	2011-06-14	3,680	$0.00	3,680	$5.60
Common Stock	Stock Option (right to buy)	Disposition	2011-06-14	14,687	$0.00	14,687	$9.50
Common Stock	Stock Option (right to buy)	Disposition	2011-06-14	21,052	$0.00	21,052	$11.63

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
18,320	2011-02-17	2020-02-17	No	4	M	Direct
313	2008-06-20	2017-06-20	No	4	M	Direct
0	2006-06-03	2017-06-20	No	4	M	Direct

Footnotes

This transaction was executed in multiple trades at prices ranging from $14.00 to $14.30 per share. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
These options were granted on February 17, 2010 and are exercisable cumulatively at a rate of 25% on February 17, 2011 (one year from grant date), and the remaining 75% thereafter vests and is exercisable in equal monthly installments on the same day of the month over the following three years.
These options were granted on June 20, 2007 and are exercisable cumulatively at a rate of 25% on June 20, 2008 (one year from grant date), and the remaining 75% thereafter vests and is exercisable in equal monthly installments on the same day of the month over the following three years.
These options were granted on June 3, 2005 and are exercisable cumulatively at a rate of 25% per annum beginning on June 3, 2006 (one year from grant date).