Mason O'Hanlon
Solo GP · Hillsborough, CA
Mason O'Hanlon is a solo GP based in Hillsborough, CA focused on AI & ML, Food & Agriculture, investing at pre-seed, seed stage. Mason O'Hanlon's most recent fund with a disclosed size, B4 Capital Fund I, LP, filed a $20M offering with the SEC in Feb 2026. Mason O'Hanlon has 3 funds and deal vehicles on SEC file, including 1 single-deal SPVs. Estimated typical check: $200K–$600K. Mason O'Hanlon has dated investing activity in the last 12 months (latest Mar 2026).
Why Mason O'Hanlon is listed
Named as one of two individuals (Manager of the General Partner of the Issuer) on the Form D for B4 Capital AM, LP, a $250K venture SPV (Mar 2026) (3 vehicles on file: 2 funds, 1 SPV).
Source: SEC Form D: B4 Capital AM, LP (Mar 13, 2026) · 2 more sources
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- Stages
- Pre-seed, Seed
- Typical check (est.)
- $200K–$600K
- Latest fund
- $20M · Feb 2026
- Latest dated activity
- Mar 2026
Is Mason O'Hanlon a fit for you?
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What does Mason O'Hanlon invest in?
AI & MLFood & AgricultureWhat has Mason O'Hanlon invested in recently?
Funds and deal vehicles Mason O'Hanlon filed with the SEC
Sources
- SEC Form D: B4 Capital AM, LPMar 13, 2026
- SEC Form D: B4 Capital Fund I, LPFeb 18, 2026
- SEC Form D: B4 Capital FFA LPFeb 13, 2026
Data refreshed from public sources Oct 15, 2026. Is this you? Remove or correct this profile.