Form D · Venture Capital Fund

Stonebridge Alpha-1, LP - Fund III A2

Seattle, WA · CIK 0001827109

Offering snapshot reported Oct 7, 2020 · SEC filing

Reported sold: $2.14M
Investors reported: 59
Minimum accepted: $10K
First sale: Oct 1, 2020

Fundraising history

Reported sold

Dates are filing dates, not cash receipt dates. Decreases are reported revisions, not evidence of withdrawals. Separate offering histories are not added together.

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
Oct 7, 2020	Amendment	$2,138,334	$0vs Oct 6, 2020	59	SEC filing
Oct 6, 2020	Initial	$2,138,334	No comparison	59	SEC filing

Offering details

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

Sales commissions: $0
Finders' fees: $0
Form D file number: 021-377216

Source: Form D, filed Oct 7, 2020. Minimum accepted may differ from a standard advertised minimum.

Fund connections

Each card uses that adviser's latest imported filing. Filing dates can differ; these disclosures do not confirm a current relationship.

Matched by reported Form D file number

STONEBRIDGE ALPHA-1, LP - FUND III A2

Investment adviser: PLATFORM ADVISOR, LLC

Gross asset value: $3.88M
Beneficial owners: 73
ADV minimum commitment: $25K

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 Other funds reporting this name →

Custodian BELLTOWER FUND GROUP, LTD SEATTLE, Washington, United States Related to adviser: Yes Other funds reporting this name →

Marketer AL ADVISORS MANAGEMENT INC SAN FRANCISCO, California, United States Related to adviser: Yes Other funds reporting this name →

Provider details

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

Fund asset history · 5 annual observations

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Fiscal year	Gross assets	Beneficial owners	ADV filed
2021	$5,302,378	73	Mar 31, 2022
2022	$5,666,234	72	Mar 30, 2023
2023	$2,980,585	73	Mar 29, 2024
2024	$3,070,762	73	Mar 28, 2025
2025	$3,880,223	73	Mar 24, 2026

Filing source

Form ADV 2107248 · Jun 4, 2026 · Schedule D 7.B.(1), fund 805-7890182198

Reported by PLATFORM ADVISOR, LLC (CRD 167700).

Other-Than Annual Amendment ERA Report.

Official IAPD profile (latest public filing). Historical values on this page come from the SEC/IAPD filing archive; 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
Phone: 3603409337