<SEC-DOCUMENT>0001564590-20-058225-index.html : 20201223
<SEC-HEADER>0001564590-20-058225.hdr.sgml : 20201223
<ACCEPTANCE-DATETIME>20201223161636
ACCESSION NUMBER:		0001564590-20-058225
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		6
CONFORMED PERIOD OF REPORT:	20201221
ITEM INFORMATION:		Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20201223
DATE AS OF CHANGE:		20201223

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:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-22873
		FILM NUMBER:		201412431

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>abio-8k_20201221.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: abio-8k_20201221.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.1
<SEQUENCE>2
<FILENAME>abio-ex101_6.htm
<DESCRIPTION>EX-10.1
<TEXT>
Document 2 - file: abio-ex101_6.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.2
<SEQUENCE>3
<FILENAME>abio-ex102_11.htm
<DESCRIPTION>EX-10.2
<TEXT>
Document 3 - file: abio-ex102_11.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.3
<SEQUENCE>4
<FILENAME>abio-ex103_7.htm
<DESCRIPTION>EX-10.3
<TEXT>
Document 4 - file: abio-ex103_7.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.4
<SEQUENCE>5
<FILENAME>abio-ex104_8.htm
<DESCRIPTION>EX-10.4
<TEXT>
Document 5 - file: abio-ex104_8.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.5
<SEQUENCE>6
<FILENAME>abio-ex105_9.htm
<DESCRIPTION>EX-10.5
<TEXT>
Document 6 - file: abio-ex105_9.htm

</DOCUMENT>
</SEC-DOCUMENT>