John Long is an angel investor based in Austin, Texas, United States with 6 known investments: TabbedOut, CheckMarket, Ziften Technologies, AllClear ID, Biolase and Wayport.
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Investment focus
- Stage
- Seed
- Sector
- FinTechHealthcareSaaS
Contacts
John Long portfolio companies (6)
- TabbedOut
- CheckMarket
- Ziften Technologies
- AllClear ID
- Biolase
- Wayport
Affiliated funds' portfolios
General Partner at Trellis Partners, whose known portfolio counts 9 companies
- TabbedOut
- Zilliant
- CipherMax
- Ziften Technologies
- AllClear ID
- Biolase
- Ekos
- GENBAND
- Flash Valet
Investor Profile
The known portfolio sits in sectors FinTech, Healthcare and SaaS, and focus areas Big Data, Cybersecurity, Enterprise SaaS and Identity Management.
Stage-wise, the known deals cluster around Seed rounds.
The portfolio and focus above give founders context on whether John Long matches their raise.
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Frequently asked questions
Who is John Long?
John Long is an angel investor based in Austin, Texas, United States with 6 known investments on file, among them TabbedOut, CheckMarket and Ziften Technologies. The sections above list the sectors, stages and firms attached to that record.
What does John Long invest in?
Listed sectors include FinTech, Healthcare and SaaS; listed focus areas include Big Data, Cybersecurity, Enterprise SaaS and Identity Management. 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 Long invest at?
The known deals of John Long include Seed 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 Long listed at?
John Long is listed as General Partner at Trellis Partners, whose known portfolio counts 9 companies.
How do I contact John Long?
An email address, a phone number and a LinkedIn page are on file for John Long. 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