Sam Tsuboi works as a Principal at Presidio Ventures. The firm's known portfolio counts 9 companies.
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Investment focus
Contacts
Affiliated funds' portfolios
Principal at Presidio Ventures, whose known portfolio counts 9 companies
- Nu Quantum
- Reliable Robotics
- Phoenix Tailings
- Outrider
- TrustCloud
- Human Native AI
- Fortera
- Realm Security
- Mandolin
Investor Profile
The listing covers sectors AI, Climate, Commerce and Consumer, and focus areas 3D Printing, Analytics, Automotive and Autonomous Vehicles. Startups operating in these areas may find Sam Tsuboi relevant.
Stage-wise, the deals at Presidio Ventures cluster around Growth, Seed and Series A rounds.
What the affiliated firm has backed is the closest available signal on whether Sam Tsuboi is worth approaching.
Colleagues at Presidio Ventures
Tyler S.
Investor
New York City, United States
Ross Leav
Senior Vice President
Burlington, United States
Masood P.
CEO
Santa Clara, United States
Kei Yoshida
Principal
Santa Clara, United States
Gary Kenji Yamamoto
Principal
Mountain View, United States
Miguel Reyes
Investor
San Francisco, United States
Hiro Koike
Vice President
Saratoga, United States
Kuni Kawase
Managing Director
United Kingdom
Frequently asked questions
Who is Sam Tsuboi?
Sam Tsuboi is a corporate venture investor based in Yokohama, Kanagawa, Japan, listed as Principal at Presidio Ventures. The known portfolio of that firm counts 9 companies. That portfolio belongs to the firm, not to Sam Tsuboi personally.
What does Sam Tsuboi invest in?
Listed sectors include AI, Climate, Commerce and Consumer; listed focus areas include 3D Printing, Analytics, Automotive and Autonomous Vehicles. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Sam Tsuboi invest at?
Presidio Ventures appears in Growth, Seed and Series A rounds across its known deals, and Sam Tsuboi is listed there as Principal. 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 Sam Tsuboi listed at?
Sam Tsuboi is listed as Principal at Presidio Ventures. 8 other people in the database share a firm with Sam Tsuboi.
How do I contact Sam Tsuboi?
An email address, a phone number and a LinkedIn page are on file for Sam Tsuboi. 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