Jeff Kleiner
Denver, Colorado
Jeff Kleiner 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
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 Accelerator.
Connect with Jeff Kleiner
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.
What stage does Jeff Kleiner invest at?
Jeff Kleiner typically invests at Pre Seed and Seed. Lead with traction that fits the stage when you reach out.
What is Jeff Kleiner's typical check size?
Jeff Kleiner typically writes checks around $150K. Use it as a signal for whether your raise fits their stage.
How do I contact Jeff Kleiner?
Unlock Jeff Kleiner's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.