John Hall is an angel investor based in Naples, Florida, United States. The known portfolio counts 5 companies: Windward, Spktral, WhiteHat Security, Calhoun Vision and Right90.
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Investment focus
- Sector
- AIHardwareHealthcareSaaS
Contacts
John Hall portfolio companies (5)
- Windward
- Spktral
- WhiteHat Security
- Calhoun Vision
- Right90
Affiliated funds' portfolios
Angel Investor at Sand Hill Angels, whose known portfolio counts 11 companies
- Ratio
- ImmuneBridge
- Lōvu Health
- Lincode
- Logomix
- Speechlab
- TrueMeter
- VIAN Therapeutics
- Lovu Health
- RevelAi Health
- Clipp
Investor Profile
The known portfolio sits in sectors AI, Hardware, Healthcare and SaaS, and focus areas Biotech, Cybersecurity, Data Analytics and Machine Learning.
John Hall appears in Seed and Series A rounds across the known deals.
The portfolio and focus above give founders context on whether John Hall matches their raise.
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Frequently asked questions
Who is John Hall?
John Hall is an angel investor based in Naples, Florida, United States with 5 known investments on file, among them Windward, Spktral and WhiteHat Security. The sections above list the sectors, stages and firms attached to that record.
What does John Hall invest in?
Listed sectors include AI, Hardware, Healthcare and SaaS; listed focus areas include Biotech, Cybersecurity, Data Analytics and Machine Learning. Those tags come from the companies attached to this profile, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does John Hall invest at?
The known deals of John Hall include Seed and Series A rounds. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is John Hall listed at?
John Hall is listed as Angel Investor at Sand Hill Angels. 37 other people in the database share a firm with John Hall.
How do I contact John Hall?
An email address, a phone number and a LinkedIn page are on file for John Hall. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal