An angel investor and operator angel based in San Francisco, California, United States, Jeff Seibert has 17 known investments, including Gusto, Stream, Patented.ai, Reasoner, MURAL, Infringements, Invalidate, T2, Blissfully, 6D.ai, Drift and Ghost Message.
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Investment focus
Contacts
Jeff Seibert portfolio companies (17)
- Gusto
- Stream
- Patented.ai
- Reasoner
- MURAL
- Infringements
- Invalidate
- T2
- Blissfully
- 6D.ai
- Drift
- Ghost Message
- Finch Legal
- Codeship
- CryptoTaxCalculator
- ClearBrain
- Valimail
Investor Profile
Founders in the listed sectors AI, Commerce, FinTech and SaaS, and focus areas Cloud Infrastructure, Data Analytics, Developer Tools and Enterprise SaaS will recognize the pattern in this portfolio.
Stage-wise, the known deals cluster around Pre-Seed and Seed rounds.
Reviewing the investment history helps decide whether there is a realistic fit before reaching out.
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Frequently asked questions
Who is Jeff Seibert?
Jeff Seibert is an angel investor and operator angel based in San Francisco, California, United States with 17 known investments on file, among them Gusto, Stream and Patented.ai. The sections above list the sectors and stages attached to that record.
What does Jeff Seibert invest in?
Listed sectors include AI, Commerce, FinTech and SaaS; listed focus areas include Cloud Infrastructure, Data Analytics, Developer Tools and Enterprise SaaS. Those tags come from the companies attached to this profile, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Jeff Seibert invest at?
The known deals of Jeff Seibert include Pre-Seed and Seed rounds. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
How do I contact Jeff Seibert?
An email address, a phone number and a LinkedIn page are on file for Jeff Seibert. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal