Foss Prime
San Francisco, CA · 6 funds and programs
Fund sponsor
Foss Prime of San Francisco, CA is named on SEC Form D filings for 6 private funds and programs since 2021, most recently on Sep 9, 2026. Together they report $47.4M raised from 3 investor positions.
- Funds and programs
- 6Filed on Form D
- Total raised
- $47.4MCumulative sales reported on Form D, all funds
- Investor positions
- 3Summed across funds; one investor may be in several
- First fund
- Aug 2021Earliest first sale or filing
- Latest Form D
- Sep 9, 2026Most recent filing by any of its funds
- Latest fund's offering
- Rule 506(b)No general advertising
Private investment funds (6)
Fund
First sale
Raised
Investors
Minimum
Offering
Foss Prime Fund 2026B, LLC
San Francisco, CAEmerging
First saleSep 2026
Raised$12.6M
Investors1
MinimumNone set
Offering506(b)
Foss Prime Fund 2026, LLC
San Francisco, CA
First sale—
Raised$0
Investors0
MinimumNone set
Offering506(b)
Foss Prime Fund 2025, LLC
San Francisco, CA
First sale—
Raised$0
Investors0
MinimumNone set
Offering506(b)
Foss Prime Fund 2024, LLC
San Francisco, CAEmerging
First saleOct 2024
Raised$33.9M
Investors1
MinimumNone set
Offering506(b)
Foss Prime Fund 2022, LLC
San Francisco, CA
First sale—
Raised$0
Investors0
MinimumNone set
Offering506(b)
Foss Prime Fund 2021, LLC
San Francisco, CA
First saleAug 2021
Raised$917K
Investors1
Minimum$917K
Offering506(b)
Grouped by AltMountain from the company named on each Form D and the funds' names, so the list may be incomplete or include a related fund. New programs are added automatically when they file. Request a correction
From SEC filings, not verified. This page summarizes Form D filings as filed. It is not an offer, solicitation or recommendation, and AltMountain has not reviewed the sponsor or its funds. “Raised” is cumulative sales, not current assets or performance. Full disclosures