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
- AngelVCInvestment Partner
- Stages
- Series ASeries B
- Invests in
- Healthcare & BiotechFoodTech & AgricultureMarketplace
- Location
- San Mateo, California
- Typical check
- $2M
- Past investments
- 2
Notable investments
DomaMatchinguu GmbHHow to reach Eric O`Brien
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About this profile
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Cite this page
Round Funded. "Eric O`Brien." Round Funded investor database, updated September 9, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/eric-o-brien-san-mateo
Frequently Asked Questions
What does Eric O`Brien invest in?
Eric O`Brien invests in Healthcare & Biotech, FoodTech & Agriculture and Marketplace, typically at Series A and Series B. 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 A and Series B. 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 $2M. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
Round Funded lists active investors with verified, professional contact details for signed-up founders. Filter by sector, stage and location, then send a personalized pitch from your own inbox.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.