John Cioffi
Angel investor in Redwood City
Redwood City, California
John Cioffi, Angel investor in Redwood City is an active investor based in Redwood City, California. This profile covers what John Cioffi backs, at which stage, and how founders can reach out in 2026.
- Investor type
- AngelInvestment Partner
- Stages
- Pre SeedSeedSeries ASeries B
- Invests in
- Healthcare & BiotechBiotech & PharmaSaaS & EnterpriseConsumer & RetailClimate & EnergyIoT & Connected DevicesEdTechTelecom & Connectivity
- Location
- Redwood City, California
- Typical check
- $625K
- Past investments
- 15
Notable investments
ClariPhy Communications
TeraneticsFiberify, Inc.PhyTunes IncTinoqAltoBeam Inc.Amati Communications CorpThe Marconi Society (non profit)Integrated Telecom ExpressASSIA, Inc.How to reach John Cioffi
Angels and operators like John Cioffi 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 Cioffi
Frequently Asked Questions
What does John Cioffi invest in?
John Cioffi invests in Healthcare & Biotech, Biotech & Pharma, SaaS & Enterprise and Consumer & Retail, typically at Pre Seed, Seed, Series A and Series B. Match your sector and stage, then reach out with a personalized pitch.
What stage does John Cioffi invest at?
John Cioffi typically invests at Pre Seed, Seed, Series A and Series B. Lead with traction that fits the stage when you reach out.
What is John Cioffi's typical check size?
John Cioffi typically writes checks around $625K. Use it as a signal for whether your raise fits their stage.
How do I contact John Cioffi?
Unlock John Cioffi's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.