John Kos
Venture investor in Chicago
Chicago, Illinois
John Kos, Venture investor in Chicago is an active investor based in Chicago, Illinois. This profile covers what John Kos backs, at which stage, and how founders can reach out in 2026.
- Investor type
- VCPE
- Stages
- Early Stage Venture
- Invests in
- Healthcare & BiotechFintechSaaS & EnterpriseConsumer & RetailManufacturing & IndustrialTelecom & ConnectivityClimate & Energy
- Location
- Chicago, Illinois
- Typical check
- $500K
- Past investments
- 34
Notable investments
Vector Laboratories
GreatCall
Vivid Seats7 to 7 Dental & Orthodontics
Antylia Scientific
Caravel Autism Health
Equiti
Gogo
Avryo Healthcare
TELUS Health
Experity
ForeFront EducationHow to reach John Kos
Angels and operators like John Kos 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 John Kos
Frequently Asked Questions
What does John Kos invest in?
John Kos invests in Healthcare & Biotech, Fintech, SaaS & Enterprise and Consumer & Retail, typically at Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does John Kos invest at?
John Kos typically invests at Early Stage Venture. Lead with traction that fits the stage when you reach out.
What is John Kos's typical check size?
John Kos typically writes checks around $500K. Use it as a signal for whether your raise fits their stage.
How do I contact John Kos?
Unlock John Kos's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.