Form D/A — Founders Fund IX, LP
0001231919-25-000327 · filed Oct 16, 2025
Offering amounts describe securities offered; amounts sold are issuer-reported as of each filing. Amendments can repeat earlier amounts. We do not add these figures into a capital-raised total. Missing amounts are not zero. Data coverage and methodology · How to interpret the amounts.
Check this disclosure on SEC EDGAR · More Pooled Investment Fund filings
Offering
- Industry
- Pooled Investment Fund
- Exemptions
- 06b, 3C, 3C.1, 3C.7
- Reported offering amount
- $971,584,000
- Reported amount sold
- $971,584,000
- Minimum investment
- $0
- Investors
- —
- Sales commission
- —
- Finders' fees
- —
Issuer
- Name
- Founders Fund IX, LP
- CIK
- 1971631
- Entity
- Limited Partnership
- Jurisdiction
- DELAWARE
- Year incorporated
- 2023
- Address
- ONE LETTERMAN DRIVE
SAN FRANCISCO, CA 94129 - Phone
- (415) 230-5800
Related persons
May not be accurate — issuers self-report this list and the SEC does not verify it. Cross-check the original SEC EDGAR filing if accuracy matters.
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N/A N/A The Founders Fund IX Management, LP · DirectorSan Francisco, CA Find on LinkedIn ↗
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Peter Thiel · DirectorSan Francisco, CA Find on LinkedIn ↗
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Napoleon Ta · DirectorSan Francisco, CA Find on LinkedIn ↗
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Trae Stephens · DirectorSan Francisco, CA Find on LinkedIn ↗
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N/A N/A FF Upper Tier GP, LLC · DirectorSan Francisco, CA Find on LinkedIn ↗
View the original filing on SEC EDGAR ↗