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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
1336087	J David Drachman	6217 Centre Park Drive West Chester OH 45069	President, Ceo And Director	Yes	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	2012-05-08	18,575	$1.33	423,681	No	4	M	Direct
Common Stock	Disposition	2012-05-08	18,575	$9.10	405,106	No	4	S	Direct
Common Stock	Acquisiton	2012-05-09	2,900	$1.33	408,006	No	4	M	Direct
Common Stock	Disposition	2012-05-09	2,900	$9.06	405,106	No	4	S	Direct
Common Stock	Acquisiton	2012-05-10	1,586	$1.33	406,692	No	4	M	Direct
Common Stock	Disposition	2012-05-10	1,586	$9.04	405,106	No	4	S	Direct
Common Stock	Acquisiton	2012-05-10	87,160	$1.33	492,266	No	4	M	Direct

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

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Incentive Stock Option (right to buy)	Disposition	2012-05-08	18,575	$0.00	18,575	$1.33
Common Stock	Incentive Stock Option (right to buy)	Disposition	2012-05-09	2,900	$0.00	2,900	$1.33
Common Stock	Incentive Stock Option (right to buy)	Disposition	2012-05-10	1,586	$0.00	1,586	$1.33
Common Stock	Incentive Stock Option (right to buy)	Disposition	2012-05-10	87,160	$0.00	87,160	$1.33

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
121,542	2003-10-14	2012-10-14	No	4	M	Direct
118,642	2003-10-14	2012-10-14	No	4	M	Direct
117,056	2003-10-14	2012-10-14	No	4	M	Direct
29,896	2003-10-14	2012-10-14	No	4	M	Direct

Footnotes

This transaction was executed in multiple trades at prices ranging from $9.06 to $9.12 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.
This transaction was executed in multiple trades at prices ranging from $9.01 to $9.05 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 October 14, 2002 and are exercisable cumulatively at a rate of 25% per annum beginning on October 14, 2003 (one year from grant date).