Tom O'Brien
Angel investor in Ireland
Ireland
Tom O'Brien, Angel investor in Ireland is an active investor based in Ireland. This profile covers what Tom O'Brien backs, at which stage, and how founders can reach out in 2026.
- Investor type
- AngelMicro VC
- Stages
- Pre SeedSeedSeries A
- Invests in
- SaaS & Enterprise
- Location
- Ireland
- Typical check
- $250K
- Past investments
- 1
Notable investments
How to reach Tom O'Brien
Angels and operators like Tom 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 Accelerator.
Connect with Tom O'Brien
Frequently Asked Questions
What does Tom O'Brien invest in?
Tom O'Brien invests in SaaS & Enterprise, typically at Pre Seed, Seed and Series A. Match your sector and stage, then reach out with a personalized pitch.
What stage does Tom O'Brien invest at?
Tom O'Brien typically invests at Pre Seed, Seed and Series A. Lead with traction that fits the stage when you reach out.
What is Tom O'Brien's typical check size?
Tom O'Brien typically writes checks around $250K. Use it as a signal for whether your raise fits their stage.
How do I contact Tom O'Brien?
Unlock Tom O'Brien's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.