Nicholas O'Leary
General Partner at Welsh, Carson, Anderson & Stowe
New York City, New York
Nicholas O'Leary, General Partner at Welsh, Carson, Anderson & Stowe is an active investor based in New York City, New York. This profile covers what Nicholas O'Leary backs, at which stage, and how founders can reach out in 2026.
- Investor type
- PEFinance Operator
- Stages
- Pre SeedSeedSeries BLate Stage Venture
- Invests in
- FintechPaymentsInsurTechHealthcare & BiotechDigital Health & HealthTechBiotech & PharmaMedTech & Medical DevicesSaaS & Enterprise
- Location
- New York City, New York
- Typical check
- $1.6M
- Past investments
- 24
Notable investments
Simeio Solutions
BTI Telecom Corp.KinicitiAbzena
AvettaQuick Base
Onward Healthcare
MMITValeritas
Alert Logic
Green StreetEmerus Hospital PartnersHow to reach Nicholas O'Leary
Angels and operators like Nicholas O'Leary 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 Nicholas O'Leary
Frequently Asked Questions
What does Nicholas O'Leary invest in?
Nicholas O'Leary invests in Fintech, Payments, InsurTech and Healthcare & Biotech, typically at Pre Seed, Seed, Series B and Late Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Nicholas O'Leary invest at?
Nicholas O'Leary typically invests at Pre Seed, Seed, Series B and Late Stage Venture. Lead with traction that fits the stage when you reach out.
What is Nicholas O'Leary's typical check size?
Nicholas O'Leary typically writes checks around $1.6M. Use it as a signal for whether your raise fits their stage.
How do I contact Nicholas O'Leary?
Unlock Nicholas O'Leary's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.