<SEC-DOCUMENT>0001193125-25-283021-index.html : 20251114
<SEC-HEADER>0001193125-25-283021.hdr.sgml : 20251114
<ACCEPTANCE-DATETIME>20251114161852
ACCESSION NUMBER:		0001193125-25-283021
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20251114
DATE AS OF CHANGE:		20251114

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Alector, Inc.
		CENTRAL INDEX KEY:			0001653087
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				822933343
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-90858
		FILM NUMBER:		251486642

	BUSINESS ADDRESS:	
		STREET 1:		131 OYSTER POINT BLVD., SUITE 600
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080
		BUSINESS PHONE:		415-231-5660

	MAIL ADDRESS:	
		STREET 1:		131 OYSTER POINT BLVD., SUITE 600
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Alector LLC
		DATE OF NAME CHANGE:	20150915

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TCG Crossover GP II, LLC
		CENTRAL INDEX KEY:			0001969280
		ORGANIZATION NAME:           	
		EIN:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G

	BUSINESS ADDRESS:	
		STREET 1:		245 LYTTON AVE., SUITE 350
		CITY:			PALO ALTO
		STATE:			CA
		BUSINESS PHONE:		650-924-9424

	MAIL ADDRESS:	
		STREET 1:		245 LYTTON AVE., SUITE 350
		CITY:			PALO ALTO
		STATE:			CA
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>ck0000000000-ex99_1.pdf
<DESCRIPTION>EX-99.1
<TEXT>
Document 2 - file: ck0000000000-ex99_1.pdf

</DOCUMENT>
</SEC-DOCUMENT>