<SEC-DOCUMENT>0001072613-18-000184-index.html : 20180305
<SEC-HEADER>0001072613-18-000184.hdr.sgml : 20180305
<ACCEPTANCE-DATETIME>20180305152230
ACCESSION NUMBER:		0001072613-18-000184
CONFORMED SUBMISSION TYPE:	SC 13D/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20180305
DATE AS OF CHANGE:		20180305
GROUP MEMBERS:		ANTHONY A. FLORENCE, JR.
GROUP MEMBERS:		DAVID M. MOTT
GROUP MEMBERS:		FOREST BASKETT
GROUP MEMBERS:		HARRY R. WELLER
GROUP MEMBERS:		JON M. SAKODA
GROUP MEMBERS:		JOSHUA MAKOWER
GROUP MEMBERS:		KRISHNA S. KOLLURI
GROUP MEMBERS:		NEA 15 GP, LLC
GROUP MEMBERS:		NEA PARTNERS 15, L.P.
GROUP MEMBERS:		NEW ENTERPRISE ASSOCIATES 15, L.P.
GROUP MEMBERS:		PETER J. BARRIS
GROUP MEMBERS:		PETER W. SONSINI
GROUP MEMBERS:		RAVI VISWANATHAN
GROUP MEMBERS:		SCOTT D. SANDELL

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ARCA biopharma, Inc.
		CENTRAL INDEX KEY:			0000907654
		STANDARD INDUSTRIAL CLASSIFICATION:	IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES [2835]
		IRS NUMBER:				363855489
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-51477
		FILM NUMBER:		18665763

	BUSINESS ADDRESS:	
		STREET 1:		11080 CIRCLEPOINT ROAD
		STREET 2:		SUITE 140
		CITY:			WESTMINSTER
		STATE:			CO
		ZIP:			80020
		BUSINESS PHONE:		720-940-2200

	MAIL ADDRESS:	
		STREET 1:		11080 CIRCLEPOINT ROAD
		STREET 2:		SUITE 140
		CITY:			WESTMINSTER
		STATE:			CO
		ZIP:			80020

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NUVELO INC
		DATE OF NAME CHANGE:	20030203

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	HYSEQ INC
		DATE OF NAME CHANGE:	19970610

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Growth Equity Opportunities IV, LLC
		CENTRAL INDEX KEY:			0001644965
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A

	BUSINESS ADDRESS:	
		STREET 1:		1954 GREENSPRING DRIVE
		STREET 2:		SUITE 600
		CITY:			TIMONIUM
		STATE:			MD
		ZIP:			21093
		BUSINESS PHONE:		410-842-4000

	MAIL ADDRESS:	
		STREET 1:		1954 GREENSPRING DRIVE
		STREET 2:		SUITE 600
		CITY:			TIMONIUM
		STATE:			MD
		ZIP:			21093
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<FILENAME>arca-sch13da1_18178.htm
<DESCRIPTION>GROWTH EQUITY OPPORTUNITIES FUND IV, LLC --- ARCA BIOPHARMA, INC. - SCHEDULE 13DA - AMEND. NO. 1
<TEXT>
Document 1 - file: arca-sch13da1_18178.htm

</DOCUMENT>
</SEC-DOCUMENT>