Peter O'Brien
Angel investor in Dublin
Dublin, Leinster
Peter O'Brien, Angel investor in Dublin is an active investor based in Dublin, Leinster. This profile covers what Peter O'Brien backs, at which stage, and how founders can reach out in 2026.
- Investor type
- AngelVCFinance Operator
- Stages
- Pre SeedSeedSeries ASeries B
- Invests in
- FintechHealthcare & BiotechSaaS & EnterpriseDeveloper Tools & DataPropTech & Real EstateGaming & EntertainmentMedia & ContentSports & Fitness
- Location
- Dublin, Leinster
- Typical check
- $625K
- Past investments
- 1
Notable investments
How to reach Peter O'Brien
Angels and operators like Peter O'Brien reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded.
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About this profile
This profile is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise. How this data is built.
Cite this page
Round Funded. "Peter O'Brien." Round Funded investor database, updated September 8, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/peter-obrien
Frequently Asked Questions
What does Peter O'Brien invest in?
Peter O'Brien invests in Fintech, Healthcare & Biotech, SaaS & Enterprise and Developer Tools & Data, typically at Pre Seed, Seed, Series A and Series B. Match your sector and stage, then reach out with a personalized pitch.
What stage does Peter O'Brien invest at?
Peter O'Brien typically invests at Pre Seed, Seed, Series A and Series B. Lead with traction that fits the stage when you reach out.
What is Peter O'Brien's typical check size?
Peter O'Brien typically writes checks around $625K. 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.