Form D · Pooled Investment Fund

WILLIAM BLAIR MB INVESTMENTS, L.P. -- UGSI 2021 SERIES

Chicago, IL · CIK 0001880956

Offering snapshot reported Aug 31, 2021 · SEC filing

Reported sold
Yet to sell
Indefinite offering
Investors reported
Not reported
Form D · investor count
Minimum accepted
Not reported
Reported outside-investor minimum
First sale
Yet to occur
As reported in this filing

What changed?

Latest filing versus its linked predecessor, where available.

No comparable changes in the displayed metrics.

Filing history

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FiledFiling typeReported soldChange vs linked filingInvestorsSource
Aug 31, 2021InitialYet to sellNo comparisonNot reportedSEC filing

Offering details

Securities
Not reported
Exemptions
Not reported
Duration over one year
Not reported
Business combination
Not reported
Sales commissions
Not reported
Finders' fees
Not reported
Form D file number
021-411813

Source: Form D, filed Aug 31, 2021. Minimum accepted may differ from a standard advertised minimum.

Fund connections

The linked fund shows its most recently reported ADV details.

Matched by reported Form D file number

WILLIAM BLAIR MB INVESTMENTS, L.P. - UGSI 2021 SERIES

Investment adviser: WILLIAM BLAIR & COMPANY L.L.C.

Gross asset value
$14.2M
Beneficial owners
14
ADV minimum commitment
$100K

Reported in Form ADV on Mar 31, 2026. Fund assets and beneficial owners measure different things from Form D sales and investors.

Service providers

Fund administrator STANDISH MANAGEMENT LLC BOSTON, Massachusetts, United States Investor statements: Yes (provided to all investors) Related to adviser: No
Auditor PRICEWATERHOUES COOPERS LLP NEW YORK, New York, United States
Provider details
Annual audit
Yes
Prime brokers
No
Custodians
No
Administrator other than the adviser
Yes
External marketing
No

PRICEWATERHOUES COOPERS LLP
PCAOB 238

Filing source

Form ADV 2051469 · Mar 31, 2026 · Schedule D 7.B.(1), fund 805-9416078825

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

People & organizations

Current and past Form D appearances. These existing records do not establish a person's current role or uniquely identify them across issuers.

People and organizations reported in Form D filings
NameReported role
James H. Wildman Director
General Partner William Blair Mb Investments Gp, L.L.C Promoter

Issuer details

Industry: Pooled Investment Fund (See others in industry)

Address:
William Blair Building 150 N. Riverside Plaza
Chicago, IL, 60606