An angel investor based in Trenton, New Jersey, United States, John Martinson has 4 known investments: ClassTag, HeyKiddo, STRATIS IoT and d2i.
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Investment focus
- Focus
- EdTech
Contacts
John Martinson portfolio companies (4)
- ClassTag
- HeyKiddo
- STRATIS IoT
- d2i
Investor Profile
The known portfolio sits in sectors Consumer, Education and FinTech, and focus area EdTech.
Stage-wise, the known deals cluster around Pre-Seed and Seed rounds.
The portfolio and focus above give founders context on whether John Martinson matches their raise.
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Frequently asked questions
Who is John Martinson?
John Martinson is an angel investor based in Trenton, New Jersey, United States with 4 known investments on file, among them ClassTag, HeyKiddo and STRATIS IoT. The sections above list the sectors and stages attached to that record.
What does John Martinson invest in?
Listed sectors include Consumer, Education and FinTech; listed focus areas include EdTech. 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 Martinson invest at?
The known deals of John Martinson include Pre-Seed and 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.
How do I contact John Martinson?
A LinkedIn page is on file for John Martinson. It is readable inside RaiseHunt after you create an account. The database holds no email address and no phone number for this profile.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal