Eric O'Brien is an angel investor based in San Mateo, California, United States. The known portfolio counts 2 companies: Doma and Matchinguu GmbH.
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Investment focus
Contacts
Eric O'Brien portfolio companies (2)
- Doma
- Matchinguu GmbH
Affiliated funds' portfolios
Co-Founder & Managing Director at Fall Line Capital, whose known portfolio counts 10 companies
- Ripple Foods
- Bonsai Robotics
- Ansa Biotechnologies
- Arzeda
- UNCAGED Innovations
- Vaulted Deep
- Lumo
- Ukko
- Ethernovia
- Micropep Technologies
Investor Profile
The known portfolio sits in sectors Agriculture, FinTech and Real Estate, and focus areas AgriTech, InsurTech and PropTech.
Eric O'Brien appears in Series A and Series B rounds across the known deals.
Reviewing the investment history helps decide whether there is a realistic fit before reaching out.
Colleagues at Fall Line Capital
Brett Kadesh
Partner
San Francisco, United States
Joaquin Oliverio
Director of Farm Acquisition and Management
Little Rock, United States
Clay Mitchell
Managing Director
Buckingham, United States
Wade H.
Investor
United States
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Frequently asked questions
Who is Eric O'Brien?
Eric O'Brien is an angel investor based in San Mateo, California, United States with 2 known investments on file, among them Doma and Matchinguu GmbH. The sections above list the sectors, stages and firms attached to that record.
What does Eric O'Brien invest in?
Listed sectors include Agriculture, FinTech and Real Estate; listed focus areas include AgriTech, InsurTech and PropTech. 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 Eric O'Brien invest at?
The known deals of Eric O'Brien include Series A and Series B 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.
Which firm is Eric O'Brien listed at?
Eric O'Brien is listed as Co-Founder & Managing Director at Fall Line Capital. 4 other people in the database share a firm with Eric O'Brien.
How do I contact Eric O'Brien?
An email address and a LinkedIn page are on file for Eric O'Brien. The address stays masked on this page and is readable inside RaiseHunt after you create an account. The database holds no phone number for this profile.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal