Arthur Iinuma is an angel investor and operator angel based in Los Angeles, California, United States. The known portfolio counts 14 companies, including Soothe, Ribbon, Bambee, Science 37, SNOWBALL, JibJab Bros Studios, DirectDerm, 0chain, Brainedge, EARTHwise, MoneyToken and POLKER.
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Investment focus
Contacts
Arthur Iinuma portfolio companies (14)
- Soothe
- Ribbon
- Bambee
- Science 37
- SNOWBALL
- JibJab Bros Studios
- DirectDerm
- 0chain
- Brainedge
- EARTHwise
- MoneyToken
- POLKER
- XYO
- t0.com (tZERO)
Investor Profile
The known portfolio sits in sectors Consumer, FinTech, Hardware and SaaS, and focus areas Crypto, Developer Tools, Enterprise SaaS and IoT.
Stage-wise, the known deals cluster around Late-Stage, Seed and Series A rounds.
Reviewing the investment history helps decide whether there is a realistic fit before reaching out.
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Frequently asked questions
Who is Arthur Iinuma?
Arthur Iinuma is an angel investor and operator angel based in Los Angeles, California, United States with 14 known investments on file, among them Soothe, Ribbon and Bambee. The sections above list the sectors and stages attached to that record.
What does Arthur Iinuma invest in?
Listed sectors include Consumer, FinTech, Hardware and SaaS; listed focus areas include Crypto, Developer Tools, Enterprise SaaS and IoT. 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 Arthur Iinuma invest at?
The known deals of Arthur Iinuma include Late-Stage, 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.
How do I contact Arthur Iinuma?
An email address and a LinkedIn page are on file for Arthur Iinuma. The address stays masked on this page and is readable inside RaiseHunt after you create an account. The database holds 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