Eric O`Brien
Co-Founder & Managing Director at Fall Line Capital
San Mateo, California
Eric O`Brien, Co-Founder & Managing Director at Fall Line Capital is an active investor based in San Mateo, California. This profile covers what Eric O`Brien backs, at which stage, and how founders can reach out in 2026.
- Investor type
- PE
- Stages
- Series BLate Stage Venture
- Invests in
- Artificial IntelligenceFintechHealthcare & BiotechBiotech & PharmaSaaS & EnterpriseConsumer & RetailE-commerce & D2CDeveloper Tools & Data
- Location
- San Mateo, California
- Typical check
- $5M
- Past investments
- 16
Notable investments
AquantiaProject Slice
Greenlight BiosciencesEvolv onDemandBenson Hill Biosystems
Swift NavigationHow to reach Eric O`Brien
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Frequently Asked Questions
What does Eric O`Brien invest in?
Eric O`Brien invests in Artificial Intelligence, Fintech, Healthcare & Biotech and Biotech & Pharma, typically at Series B and Late Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Eric O`Brien invest at?
Eric O`Brien typically invests at Series B and Late Stage Venture. Lead with traction that fits the stage when you reach out.
What is Eric O`Brien's typical check size?
Eric O`Brien typically writes checks around $5M. Use it as a signal for whether your raise fits their stage.
How do I contact Eric O`Brien?
Unlock Eric O`Brien's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.