<SEC-DOCUMENT>0001193125-24-198959-index.html : 20240812
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<ACCEPTANCE-DATETIME>20240812165903
ACCESSION NUMBER:		0001193125-24-198959
CONFORMED SUBMISSION TYPE:	S-3
PUBLIC DOCUMENT COUNT:		6
FILED AS OF DATE:		20240812
DATE AS OF CHANGE:		20240812

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Annexon, Inc.
		CENTRAL INDEX KEY:			0001528115
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		IRS NUMBER:				275414423
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-281493
		FILM NUMBER:		241197724

	BUSINESS ADDRESS:	
		STREET 1:		1400 SIERRA POINT PARKWAY
		STREET 2:		BLDG C, SUITE 200
		CITY:			BRISBANE
		STATE:			CA
		ZIP:			94005
		BUSINESS PHONE:		(650)-822-5500

	MAIL ADDRESS:	
		STREET 1:		1400 SIERRA POINT PARKWAY
		STREET 2:		BLDG C, SUITE 200
		CITY:			BRISBANE
		STATE:			CA
		ZIP:			94005
</SEC-HEADER>
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<TYPE>S-3
<SEQUENCE>1
<FILENAME>d878941ds3.htm
<DESCRIPTION>S-3
<TEXT>
Document 1 - file: d878941ds3.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>d878941dex51.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 2 - file: d878941dex51.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>d878941dex231.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 3 - file: d878941dex231.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-FILING FEES
<SEQUENCE>4
<FILENAME>d878941dexfilingfees.htm
<DESCRIPTION>EX-FILING FEES
<TEXT>
Document 4 - file: d878941dexfilingfees.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g878941g03g03.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g878941g03g03.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g878941g0807100504435.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g878941g0807100504435.jpg

</DOCUMENT>
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