Jeff Rosen

Active Investor

Founder, Managing Partner 🧹

San Francisco, California

Jeff Rosen, Founder, Managing Partner 🧹 is an active investor based in San Francisco, California. This profile covers what Jeff Rosen backs, at which stage, and how founders can reach out in 2026.

Investor type: VCOperatorInvestor
Stages: Pre SeedSeed
Invests in: Artificial IntelligenceFintechHealthcare & BiotechBiotech & PharmaSaaS & EnterpriseCrypto & Web3Developer Tools & DataCybersecurity
Location: San Francisco, California
Typical check: $150K

How to reach Jeff Rosen

Angels and operators like Jeff Rosen 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 Rosen invest in?

Jeff Rosen invests in Artificial Intelligence, Fintech, Healthcare & Biotech and Biotech & Pharma, typically at Pre Seed and Seed. Match your sector and stage, then reach out with a personalized pitch.