Form D · Venture Capital Fund

59CH Ventures Master, LP - Umbra Series B

Chapel Hill, NC · CIK 0001951748

Offering snapshot reported Nov 8, 2022 · SEC filing

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Latest filing versus its linked predecessor, where available.

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Filed	Filing type	Reported sold	Change vs linked filing	Investors	Source
Nov 8, 2022	Initial	$9,999,999	No comparison	19	SEC filing

Source: Form D, filed Nov 8, 2022. Minimum accepted may differ from a standard advertised minimum.

The linked fund shows its most recently reported ADV details.

Matched by reported Form D file number

Investment adviser: CHAMPION HILL LABS, LLC

Reported in Form ADV on Jun 29, 2026. Fund assets and beneficial owners measure different things from Form D sales and investors.

Fund administrator FLOW, INC. SAN FRANCISCO, California, United States Investor statements: No (provided to no investors) Related to adviser: No

Custodian BANK OF CALIFORNIA DURHAM, North Carolina, United States Related to adviser: No

Provider details

Filing source

Form ADV 2114714 · Jun 29, 2026 · Schedule D 7.B.(1), fund 805-9677228971

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

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
Name	Reported role
Llc 59 Ch Ventures Gp	Director

Industry: Pooled Investment Fund (See others in industry)

Address:

1108 Manor Dr.
Chapel Hill, NC, 27516