    <SEC-DOCUMENT>0001140361-25-016010-index.html : 20250428
    <SEC-HEADER>0001140361-25-016010.hdr.sgml : 20250428
    <ACCEPTANCE-DATETIME>20250428160259
    ACCESSION NUMBER:		0001140361-25-016010
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20250428
    DATE AS OF CHANGE:		20250428

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Adverum Biotechnologies, Inc.
    		CENTRAL INDEX KEY:			0001501756
    		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
    		ORGANIZATION NAME:           	03 Life Sciences
    		EIN:				205258327
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-36579
    		FILM NUMBER:		25880163

    	BUSINESS ADDRESS:
    		STREET 1:		100 CARDINAL WAY
    		CITY:			REDWOOD CITY
    		STATE:			CA
    		ZIP:			94063
    		BUSINESS PHONE:		(650) 649-1004

    	MAIL ADDRESS:
    		STREET 1:		100 CARDINAL WAY
    		CITY:			REDWOOD CITY
    		STATE:			CA
    		ZIP:			94063

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Avalanche Biotechnologies, Inc.
    		DATE OF NAME CHANGE:	20100921
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>ny20042039x3_defa14a.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: ny20042039x3_defa14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>ny20042039x3_nc01.jpg
    <TEXT>
    Document 2 - file: ny20042039x3_nc01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>ny20042039x3_nc02.jpg
    <TEXT>
    Document 3 - file: ny20042039x3_nc02.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>