Mark Rainosek
Angel investor in Greensboro
Greensboro, North Carolina
Mark Rainosek, Angel investor in Greensboro is an active investor based in Greensboro, North Carolina. This profile covers what Mark Rainosek backs, at which stage, and how founders can reach out in 2026.
- Investor type
- AngelVCPEVenture Debt
- Stages
- Pre SeedSeedSeries ASeries BLate Stage Venture
- Invests in
- Healthcare & BiotechMedTech & Medical Devices
- Location
- Greensboro, North Carolina
- Typical check
- $1M
- Past investments
- 4
Notable investments
How to reach Mark Rainosek
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About this profile
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Cite this page
Round Funded. "Mark Rainosek." Round Funded investor database, updated September 24, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/mark-rainosek
Frequently Asked Questions
What does Mark Rainosek invest in?
Mark Rainosek invests in Healthcare & Biotech and MedTech & Medical Devices, 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 Mark Rainosek invest at?
Mark Rainosek typically invests at Pre Seed, Seed, Series A and Series B. Lead with traction that fits the stage when you reach out.
What is Mark Rainosek's typical check size?
Mark Rainosek typically writes checks around $1M. 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.