Form D · Venture Capital Fund

Haystack SA Fund I, a series of Opportunity Master Funds, LP

Seattle, WA · CIK 0001848040

Offering snapshot reported Feb 26, 2021 · SEC filing

Reported sold: $90K
Investors reported: 8
Minimum accepted: $5K
First sale: Feb 18, 2021

What changed?

Latest filing versus its linked predecessor, where available.

No comparable changes in the displayed metrics.

Filing history

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Filed	Filing type	Reported sold	Change vs linked filing	Investors	Source
Feb 26, 2021	Initial	$90,000	No comparison	8	SEC filing

Offering details

Securities: Pooled investment fund
Exemptions: 06b, 3C.1
Duration over one year: No
Business combination: No

Sales commissions: $0
Finders' fees: $0
Form D file number: 021-390710

Source: Form D, filed Feb 26, 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

HAYSTACK SA FUND I, A SERIES OF OPPORTUNITY MASTER FUNDS, LP

Investment adviser: PLATFORM ADVISOR, LLC

Gross asset value: $151K
Beneficial owners: 8
ADV minimum commitment: $1K

Reported in Form ADV on Jun 4, 2026. Fund assets and beneficial owners measure different things from Form D sales and investors.

Service providers

Fund administrator BELLTOWER FUND GROUP, LTD SEATTLE, Washington, United States Investor statements: No (provided to no investors) Related to adviser: Yes

Custodian BELLTOWER FUND GROUP, LTD SEATTLE, Washington, United States Related to adviser: Yes

Marketer AL ADVISORS MANAGEMENT INC SAN FRANCISCO, California, United States Related to adviser: Yes

Provider details

Annual audit: No
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: Yes

Filing source

Form ADV 2107248 · Jun 4, 2026 · Schedule D 7.B.(1), fund 805-3341088212

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
Name	Reported role
Ltd. Belltower Fund Group	Director
Llc Fund Gp,	Director

Issuer details

Industry: Pooled Investment Fund (See others in industry)

Address:

411 1 St Ave S Ste 505
Seattle, WA, 98104