Ian Rountree is an angel investor and operator angel based in San Francisco, California, United States. The known portfolio counts 3 companies: Superhuman, EasyPost and Rental Beast.
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Investment focus
Contacts
Ian Rountree portfolio companies (3)
- Superhuman
- EasyPost
- Rental Beast
Affiliated funds' portfolios
General Partner at Cantos, whose known portfolio counts 10 companies
- Pilgrim
- Plata
- Castelion
- MoldCo
- Adaptyx Biosciences
- Arbor Energy
- Faeth Therapeutics
- Shinkei Systems
- Vital Lyfe
- Remedy Scientific
Investor Profile
The listing covers sectors AI, Climate, Hardware and SaaS, and focus areas Aerospace, Clean Energy, Machine Learning and Productivity. Startups operating in these areas may find Ian Rountree relevant.
Stage-wise, the known deals cluster around Pre-Seed and Seed rounds.
The portfolio and focus above give founders context on whether Ian Rountree matches their raise.
Colleagues at Cantos
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Frequently asked questions
Who is Ian Rountree?
Ian Rountree is an angel investor and operator angel based in San Francisco, California, United States with 3 known investments on file, among them Superhuman, EasyPost and Rental Beast. The sections above list the sectors, stages and firms attached to that record.
What does Ian Rountree invest in?
Listed sectors include AI, Climate, Hardware and SaaS; listed focus areas include Aerospace, Clean Energy, Machine Learning and Productivity. 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 Ian Rountree invest at?
The known deals of Ian Rountree 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.
Which firm is Ian Rountree listed at?
Ian Rountree is listed as General Partner at Cantos. One other person in the database shares a firm with Ian Rountree.
How do I contact Ian Rountree?
An email address, a phone number and a LinkedIn page are on file for Ian Rountree. 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