John Fontein

John Fontein is an angel investor based in Brooklyn, New York. See portfolio, sector focus and contact routes.

About John Fontein

John Fontein is an angel investor based in Brooklyn, New York, who focuses on early-stage (seed and pre-seed) investments in SMB software, marketing tech, consumer health, and health IT. He has made approximately 16 investments with a particular emphasis on healthcare, fintech, and consumer technology, including notable portfolio companies such as Fleet, Delfina, ivee, and Vivvi. His distinctive thesis centers on backing founders building innovative solutions in health services, digital platforms, and financial technology, leveraging his experience as Co-Founder of the healthcare marketplace Sesame.

John Fontein at a glance

Role
Co-Founder
Location
New York, New York, United States
Investor type
Individual/Angel
Focus areas
General
Investments recorded
16

Frequently asked about John Fontein

What does John Fontein invest in?
John Fontein (New York, New York, United States) — sector focus: General.
How do I contact John Fontein?
John Fontein's published profile links (website, LinkedIn or X where available) are listed on the StartupFundraising.com investor profile.
Where is John Fontein headquartered?
John Fontein is based in New York, New York, United States.

Every field above is read from the StartupFundraising firm directory — disclosed location, recorded investments and stated focus — and re-checked as filings arrive. Founders pair it with investors in New York when building a target list.

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