0001895588-21-000001.txt : 20211130 0001895588-21-000001.hdr.sgml : 20211130 20211130152625 ACCESSION NUMBER: 0001895588-21-000001 CONFORMED SUBMISSION TYPE: D PUBLIC DOCUMENT COUNT: 1 ITEM INFORMATION: 06b ITEM INFORMATION: Investment Company Act Section 3(c) ITEM INFORMATION: Section 3(c)(1) ITEM INFORMATION: Section 3(c)(7) FILED AS OF DATE: 20211130 DATE AS OF CHANGE: 20211130 EFFECTIVENESS DATE: 20211130 FILER: COMPANY DATA: COMPANY CONFORMED NAME: WILLIAM BLAIR MB INVESTMENTS, L.P. -- M13V FIII 2021 SERIES CENTRAL INDEX KEY: 0001895588 IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: D SEC ACT: 1933 Act SEC FILE NUMBER: 021-422920 FILM NUMBER: 211459545 BUSINESS ADDRESS: STREET 1: WILLIAM BLAIR BUILDING STREET 2: 150 N. RIVERSIDE PLAZA CITY: CHICAGO STATE: IL ZIP: 60606 BUSINESS PHONE: 312-236-1600 MAIL ADDRESS: STREET 1: WILLIAM BLAIR BUILDING STREET 2: 150 N. RIVERSIDE PLAZA CITY: CHICAGO STATE: IL ZIP: 60606 D 1 primary_doc.xml X0708 D LIVE 0001895588 WILLIAM BLAIR MB INVESTMENTS, L.P. -- M13V FIII 2021 SERIES WILLIAM BLAIR BUILDING 150 N. RIVERSIDE PLAZA CHICAGO IL ILLINOIS 60606 312-236-1600 DELAWARE None None Limited Partnership true 2020 GENERAL PARTNER WILLIAM BLAIR MB INVESTMENTS GP, L.L.C. WILLIAM BLAIR BUILDING 150 N. RIVERSIDE PLAZA CHICAGO IL ILLINOIS 60606 Promoter GENERAL PARTNER OF THE ISSUER JAMES H. WILDMAN WILLIAM BLAIR BUILDING 150 N. RIVERSIDE PLAZA CHICAGO IL ILLINOIS 60606 Director MANAGING DIRCETOR OF WILLIAM BLAIR MERCHANT BANKING Pooled Investment Fund Private Equity Fund false Decline to Disclose 06b 3C 3C.1 3C.7 false true false true false 0 Indefinite 0 Indefinite false 0 0 0 0 true THE ISSUER'S GENERAL PARTNER, OR AN AFFILIATE OF THE ISSUER'S GENERAL PARTNER, MAY BE ENTITLED TO RECIVE A FEE IN ACCORDANCE WITH THE ISSUER'S GOVERNING DOCUMENTATION, AS AMENDED FROM TIME TO TIME. false WILLIAM BLAIR MB INVESTMENTS, L.P. -- M13V FIII 2021 SERIES /s/JAMES H. WILDMAN JAMES H. WILDMAN MANAGING DIRECTOR OF THE GENERAL PARTNER OF THE ISSUER 2021-11-29