<SEC-DOCUMENT>0001193125-23-032861-index.html : 20230210
<SEC-HEADER>0001193125-23-032861.hdr.sgml : 20230210
<ACCEPTANCE-DATETIME>20230210171602
ACCESSION NUMBER:		0001193125-23-032861
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20230210
DATE AS OF CHANGE:		20230210

SUBJECT COMPANY:	

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

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-90858
		FILM NUMBER:		23613412

	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:			Rosenthal Arnon
		CENTRAL INDEX KEY:			0001757770

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	MAIL ADDRESS:	
		STREET 1:		C/O ALECTOR, INC.
		STREET 2:		151 OYSTER POINT BLVD., #300
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>d433109dsc13ga.htm
<DESCRIPTION>SC 13G/A
<TEXT>
Document 1 - file: d433109dsc13ga.htm

</DOCUMENT>
</SEC-DOCUMENT>