Roy Rubin
Solo GP · Agoura Hills, CA
Roy Rubin is a solo GP based in Agoura Hills, CA, investing at pre-seed, seed stage. Roy Rubin's most recent fund with a disclosed size, R-Squared Ventures III, LP, filed a $50M offering with the SEC in Oct 2025. Estimated typical check: $500K–$1.5M. Roy Rubin's latest dated investing activity was in Oct 2025.
Why Roy Rubin is listed
Named as one of two individuals (Managing Director of the Issuer's General Partner) on the Form D for R-Squared Ventures III, LP, a $50M venture fund (Oct 2025).
Source: SEC Form D: R-Squared Ventures III, LP (Oct 3, 2025)
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- Stages
- Pre-seed, Seed
- Typical check (est.)
- $500K–$1.5M
- Latest fund
- $50M · Oct 2025
- Latest dated activity
- Oct 2025
Is Roy Rubin a fit for you?
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What does Roy Rubin invest in?
Sector focus not yet verifiedWhat has Roy Rubin invested in recently?
- Oct 2025
R-Squared Ventures III, LP
Invested through a fund
Funds and deal vehicles Roy Rubin filed with the SEC
- Oct 2025
R-Squared Ventures III, LP
Fund · $50M offering
Sources
- SEC Form D: R-Squared Ventures III, LPOct 3, 2025
Data refreshed from public sources Oct 15, 2026. Is this you? Remove or correct this profile.