<SEC-DOCUMENT>0001193125-20-136266-index.html : 20200507
<SEC-HEADER>0001193125-20-136266.hdr.sgml : 20200507
<ACCEPTANCE-DATETIME>20200507161640
ACCESSION NUMBER:		0001193125-20-136266
CONFORMED SUBMISSION TYPE:	S-3
PUBLIC DOCUMENT COUNT:		9
FILED AS OF DATE:		20200507
DATE AS OF CHANGE:		20200507

FILER:

	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:		S-3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-238067
		FILM NUMBER:		20856640

	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
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<TYPE>S-3
<SEQUENCE>1
<FILENAME>d924294ds3.htm
<DESCRIPTION>S-3
<TEXT>
Document 1 - file: d924294ds3.htm

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<DOCUMENT>
<TYPE>EX-4.3
<SEQUENCE>2
<FILENAME>d924294dex43.htm
<DESCRIPTION>EX-4.3
<TEXT>
Document 2 - file: d924294dex43.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.4
<SEQUENCE>3
<FILENAME>d924294dex44.htm
<DESCRIPTION>EX-4.4
<TEXT>
Document 3 - file: d924294dex44.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.5
<SEQUENCE>4
<FILENAME>d924294dex45.htm
<DESCRIPTION>EX-4.5
<TEXT>
Document 4 - file: d924294dex45.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.6
<SEQUENCE>5
<FILENAME>d924294dex46.htm
<DESCRIPTION>EX-4.6
<TEXT>
Document 5 - file: d924294dex46.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>6
<FILENAME>d924294dex51.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 6 - file: d924294dex51.htm

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<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>7
<FILENAME>d924294dex231.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 7 - file: d924294dex231.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>g924294002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: g924294002.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>g924294arcalogo.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: g924294arcalogo.jpg

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