Seth Hallen
Solo GP · Hollywood, CA
Seth Hallen is a solo GP based in Hollywood, CA, investing at pre-seed, seed stage. Seth Hallen's most recent fund with a disclosed size, Hallstone Ventures Fund 1, LP, filed a $10M offering with the SEC in Feb 2026. Estimated typical check: $100K–$300K. Seth Hallen has dated investing activity in the last 12 months (latest Feb 2026).
Why Seth Hallen is listed
Named as one of two individuals (Managing Partner of the Manager of the General Partner of the Fund) on the Form D for Hallstone Ventures Fund 1, LP, a $10M venture fund (Feb 2026).
Source: SEC Form D: Hallstone Ventures Fund 1, LP (Feb 9, 2026)
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- Stages
- Pre-seed, Seed
- Typical check (est.)
- $100K–$300K
- Latest fund
- $10M · Feb 2026
- Latest dated activity
- Feb 2026
Is Seth Hallen a fit for you?
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What does Seth Hallen invest in?
Sector focus not yet verifiedWhat has Seth Hallen invested in recently?
- Feb 2025
Hallstone Ventures Fund 1, LP
Invested through a fund
Funds and deal vehicles Seth Hallen filed with the SEC
- Feb 2026
Hallstone Ventures Fund 1, LP
Fund · $10M offering
Sources
- SEC Form D: Hallstone Ventures Fund 1, LPFeb 9, 2026
Data refreshed from public sources Oct 15, 2026. Is this you? Remove or correct this profile.