0001644956-21-000003.txt : 20210513 0001644956-21-000003.hdr.sgml : 20210513 20210512175359 ACCESSION NUMBER: 0001644956-21-000003 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20210331 FILED AS OF DATE: 20210513 DATE AS OF CHANGE: 20210512 EFFECTIVENESS DATE: 20210513 FILER: COMPANY DATA: COMPANY CONFORMED NAME: WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC CENTRAL INDEX KEY: 0001644956 IRS NUMBER: 472614791 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-17022 FILM NUMBER: 21916470 BUSINESS ADDRESS: STREET 1: 150 NORTH RIVERSIDE PLAZA CITY: CHICAGO STATE: IL ZIP: 60606 BUSINESS PHONE: 312-236-1600 MAIL ADDRESS: STREET 1: 150 NORTH RIVERSIDE PLAZA CITY: CHICAGO STATE: IL ZIP: 60606 13F-HR 1 primary_doc.xml 13F-HR LIVE false false false 0001644956 XXXXXXXX 03-31-2021 03-31-2021 WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

150 NORTH RIVERSIDE PLAZA CHICAGO IL 60606

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