Jeff Kleiner

Active Investor

President and CEO at Kleiner Device Labs

Denver, Colorado

Jeff Kleiner, President and CEO at Kleiner Device Labs is an active investor based in Denver, Colorado. This profile covers what Jeff Kleiner backs, at which stage, and how founders can reach out in 2026.

Stages: Pre SeedSeed
Invests in: Healthcare & BiotechDigital Health & HealthTechBiotech & PharmaMedTech & Medical DevicesSaaS & EnterpriseIoT & Connected DevicesManufacturing & IndustrialMobility & Logistics
Location: Denver, Colorado
Typical check: $150K
Past investments: 1

Notable investments

Kleiner Device Labs

How to reach Jeff Kleiner

Angels and operators like Jeff Kleiner 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.

Frequently Asked Questions

What does Jeff Kleiner invest in?

Jeff Kleiner invests in Healthcare & Biotech, Digital Health & HealthTech, Biotech & Pharma and MedTech & Medical Devices, typically at Pre Seed and Seed. Match your sector and stage, then reach out with a personalized pitch.