<SEC-DOCUMENT>0001193125-16-457769-index.html : 20160210
<SEC-HEADER>0001193125-16-457769.hdr.sgml : 20160210
<ACCEPTANCE-DATETIME>20160210172634
ACCESSION NUMBER:		0001193125-16-457769
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20160210
DATE AS OF CHANGE:		20160210
GROUP MEMBERS:		QVT ASSOCIATES GP LLC
GROUP MEMBERS:		QVT FINANCIAL GP LLC
GROUP MEMBERS:		QVT FUND V LP

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ARROWHEAD RESEARCH CORP
		CENTRAL INDEX KEY:			0000879407
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH [8731]
		IRS NUMBER:				460408024
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-48710
		FILM NUMBER:		161406755

	BUSINESS ADDRESS:	
		STREET 1:		225 SOUTH LAKE AVENUE
		STREET 2:		SUITE 1050
		CITY:			PASADENA
		STATE:			CA
		ZIP:			91101
		BUSINESS PHONE:		626-304-3400

	MAIL ADDRESS:	
		STREET 1:		225 SOUTH LAKE AVENUE
		STREET 2:		SUITE 1050
		CITY:			PASADENA
		STATE:			CA
		ZIP:			91101

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INTERACTIVE GROUP INC
		DATE OF NAME CHANGE:	20020509

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INTERACTIVE INC
		DATE OF NAME CHANGE:	19940224

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			QVT Financial LP
		CENTRAL INDEX KEY:			0001290162
		IRS NUMBER:				113694008
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		1177 AVENUE OF THE AMERICAS
		STREET 2:		9TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
		BUSINESS PHONE:		212-705-8800

	MAIL ADDRESS:	
		STREET 1:		1177 AVENUE OF THE AMERICAS
		STREET 2:		9TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>d136988dsc13ga.htm
<DESCRIPTION>AMENDMENT NO. 4 TO SCHEDULE 13G
<TEXT>
Document 1 - file: d136988dsc13ga.htm

</DOCUMENT>
</SEC-DOCUMENT>