<SEC-DOCUMENT>0000945621-18-000110-index.html : 20180214
<SEC-HEADER>0000945621-18-000110.hdr.sgml : 20180214
<ACCEPTANCE-DATETIME>20180214132455
ACCESSION NUMBER:		0000945621-18-000110
CONFORMED SUBMISSION TYPE:	SC 13D/A
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20180214
DATE AS OF CHANGE:		20180214

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AtriCure, Inc.
		CENTRAL INDEX KEY:			0001323885
		STANDARD INDUSTRIAL CLASSIFICATION:	SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
		IRS NUMBER:				341940305
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-81467
		FILM NUMBER:		18610388

	BUSINESS ADDRESS:	
		STREET 1:		7555 INNOVATION WAY
		CITY:			MASON
		STATE:			OH
		ZIP:			45040
		BUSINESS PHONE:		513-755-4100

	MAIL ADDRESS:	
		STREET 1:		7555 INNOVATION WAY
		CITY:			MASON
		STATE:			OH
		ZIP:			45040

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Hudson Executive Capital LP
		CENTRAL INDEX KEY:			0001652522
		IRS NUMBER:				472878186
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A

	BUSINESS ADDRESS:	
		STREET 1:		1185 AVENUE OF THE AMERICAS, 32ND FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
		BUSINESS PHONE:		(212) 521-8495

	MAIL ADDRESS:	
		STREET 1:		1185 AVENUE OF THE AMERICAS, 32ND FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<FILENAME>hudsonatrc13da02132018.htm
<DESCRIPTION>AMENDMENT NO. 1 TO SCHEDULE 13D
<TEXT>
Document 1 - file: hudsonatrc13da02132018.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1
<SEQUENCE>2
<FILENAME>exhibit1.htm
<DESCRIPTION>JOINT FILING AGREEMENT OF THE REPORTING PERSONS
<TEXT>
Document 2 - file: exhibit1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-2
<SEQUENCE>3
<FILENAME>exhibit2.htm
<DESCRIPTION>SCHEDULE OF TRANSACTIONS EFFECTED DURING THE LAST 60 DAYS
<TEXT>
Document 3 - file: exhibit2.htm

</DOCUMENT>
</SEC-DOCUMENT>