0001193125-26-255816.txt : 20260603 0001193125-26-255816.hdr.sgml : 20260603 20260603173017 ACCESSION NUMBER: 0001193125-26-255816 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20260602 FILED AS OF DATE: 20260603 DATE AS OF CHANGE: 20260603 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Rosenthal Arnon CENTRAL INDEX KEY: 0001757770 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38792 FILM NUMBER: 261062217 MAIL ADDRESS: STREET 1: C/O ALECTOR, INC. STREET 2: 151 OYSTER POINT BLVD., #300 CITY: SOUTH SAN FRANCISCO STATE: CA ZIP: 94080 ISSUER: 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 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 4 1 ownership.xml 4