<SEC-DOCUMENT>0000935836-25-000520-index.html : 20250814
<SEC-HEADER>0000935836-25-000520.hdr.sgml : 20250814
<ACCEPTANCE-DATETIME>20250814131425
ACCESSION NUMBER:		0000935836-25-000520
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G/A
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20250814
DATE AS OF CHANGE:		20250814

SUBJECT COMPANY:	

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

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-91583
		FILM NUMBER:		251216875

	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

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Logos Global Management LP
		CENTRAL INDEX KEY:			0001792126
		ORGANIZATION NAME:           	
		EIN:				833997742
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		1 LETTERMAN DRIVE
		STREET 2:		BLDG C, SUITE C3-350
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94129
		BUSINESS PHONE:		4158014660

	MAIL ADDRESS:	
		STREET 1:		1 LETTERMAN DRIVE
		STREET 2:		BLDG C, SUITE C3-350
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94129
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99
<SEQUENCE>2
<FILENAME>logosex99mf.htm
<DESCRIPTION>AGREEMENT RE JOINT FILING
<TEXT>
Document 2 - file: logosex99mf.htm

</DOCUMENT>
</SEC-DOCUMENT>