<SEC-DOCUMENT>0001193125-26-186942-index.html : 20260428
<SEC-HEADER>0001193125-26-186942.hdr.sgml : 20260428
<ACCEPTANCE-DATETIME>20260428160603
ACCESSION NUMBER:		0001193125-26-186942
CONFORMED SUBMISSION TYPE:	ARS
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20251231
FILED AS OF DATE:		20260428
DATE AS OF CHANGE:		20260428
EFFECTIVENESS DATE:		20260428

FILER:

	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:		ARS
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38792
		FILM NUMBER:		26907615

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>ARS
<SEQUENCE>1
<FILENAME>2026_ars.pdf
<DESCRIPTION>ARS
<TEXT>
Document 1 - file: 2026_ars.pdf

</DOCUMENT>
</SEC-DOCUMENT>