    <SEC-DOCUMENT>0001628280-23-001743-index.html : 20230130
    <SEC-HEADER>0001628280-23-001743.hdr.sgml : 20230130
    <ACCEPTANCE-DATETIME>20230130164529
    ACCESSION NUMBER:		0001628280-23-001743
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		9
    CONFORMED PERIOD OF REPORT:	20230130
    FILED AS OF DATE:		20230130
    DATE AS OF CHANGE:		20230130

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			ARROWHEAD PHARMACEUTICALS, INC.
    		CENTRAL INDEX KEY:			0000879407
    		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
    		IRS NUMBER:				460408024
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			0930

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-38042
    		FILM NUMBER:		23568491

    	BUSINESS ADDRESS:
    		STREET 1:		177 E COLORADO BLVD
    		STREET 2:		SUITE 700
    		CITY:			PASADENA
    		STATE:			CA
    		ZIP:			91105
    		BUSINESS PHONE:		626-696-4702

    	MAIL ADDRESS:
    		STREET 1:		177 E COLORADO BLVD
    		STREET 2:		SUITE 700
    		CITY:			PASADENA
    		STATE:			CA
    		ZIP:			91105

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	ARROWHEAD RESEARCH CORP
    		DATE OF NAME CHANGE:	20040112

    	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
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>arwr_xdef14ax316231.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: arwr_xdef14ax316231.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>arrowhead_pagex1.jpg
    <TEXT>
    Document 2 - file: arrowhead_pagex1.jpg

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    <SEQUENCE>3
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    <TEXT>
    Document 3 - file: chart-0d38975edb3c464f8b6.jpg

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    <SEQUENCE>4
    <FILENAME>chart-c9c2bc9084654bd293a.jpg
    <TEXT>
    Document 4 - file: chart-c9c2bc9084654bd293a.jpg

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    <SEQUENCE>5
    <FILENAME>g298856g08m78.jpg
    <TEXT>
    Document 5 - file: g298856g08m78.jpg

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    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>g298856g27e04.jpg
    <TEXT>
    Document 6 - file: g298856g27e04.jpg

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    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>g298856g70d20.jpg
    <TEXT>
    Document 7 - file: g298856g70d20.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
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    <TEXT>
    Document 8 - file: proxycard1cc.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>proxycard2cc.jpg
    <TEXT>
    Document 9 - file: proxycard2cc.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>