John Rex

Active Investor

Chief Medical Officer at F2G

Wellesley, Massachusetts

John Rex, Chief Medical Officer at F2G is an active investor based in Wellesley, Massachusetts. This profile covers what John Rex backs, at which stage, and how founders can reach out in 2026.

Investor type: Angel
Stages: Pre SeedSeed
Invests in: Healthcare & BiotechBiotech & PharmaSaaS & EnterpriseIoT & Connected DevicesManufacturing & Industrial
Location: Wellesley, Massachusetts
Typical check: $150K
Past investments: 3

Notable investments

U.S. Department of Health and Human ServicesAdenium Biotech ApSFDA

How to reach John Rex

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Frequently Asked Questions

What does John Rex invest in?

John Rex invests in Healthcare & Biotech, Biotech & Pharma, SaaS & Enterprise and IoT & Connected Devices, typically at Pre Seed and Seed. Match your sector and stage, then reach out with a personalized pitch.