<SEC-DOCUMENT>0001193125-24-088757-index.html : 20240405
<SEC-HEADER>0001193125-24-088757.hdr.sgml : 20240405
<ACCEPTANCE-DATETIME>20240405193825
ACCESSION NUMBER:		0001193125-24-088757
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20240405
DATE AS OF CHANGE:		20240405
GROUP MEMBERS:		ERIC D. ANDERSEN
GROUP MEMBERS:		WESTERN STANDARD PARTNERS, L.P.

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ARCA biopharma, Inc.
		CENTRAL INDEX KEY:			0000907654
		STANDARD INDUSTRIAL CLASSIFICATION:	IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES [2835]
		ORGANIZATION NAME:           	03 Life Sciences
		IRS NUMBER:				363855489
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-51477
		FILM NUMBER:		24827843

	BUSINESS ADDRESS:	
		STREET 1:		10170 CHURCH RANCH WAY
		STREET 2:		SUITE 100
		CITY:			WESTMINSTER
		STATE:			CO
		ZIP:			80021
		BUSINESS PHONE:		7209402200

	MAIL ADDRESS:	
		STREET 1:		10170 CHURCH RANCH WAY
		STREET 2:		SUITE 100
		CITY:			WESTMINSTER
		STATE:			CO
		ZIP:			80021

	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:			Western Standard LLC
		CENTRAL INDEX KEY:			0001517666
		ORGANIZATION NAME:           	
		IRS NUMBER:				133604093
		STATE OF INCORPORATION:			CA

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		5757 WILSHIRE BLVD
		STREET 2:		SUITE 636
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90036
		BUSINESS PHONE:		3109294303

	MAIL ADDRESS:	
		STREET 1:		5757 WILSHIRE BLVD
		STREET 2:		SUITE 636
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90036

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Western Standard, LLC
		DATE OF NAME CHANGE:	20160129

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Western Standard LLC
		DATE OF NAME CHANGE:	20110408
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>d804055dsc13ga.htm
<DESCRIPTION>SC 13G/A
<TEXT>
Document 1 - file: d804055dsc13ga.htm

</DOCUMENT>
</SEC-DOCUMENT>