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Jonathan Brook

Solo GP · Miami, FL

Jonathan Brook is a solo GP based in Miami, FL, investing at pre-seed, seed stage. Jonathan Brook's most recent fund with a disclosed size, SP Alpha Opportunity Fund LLC, filed a $25M offering with the SEC in Oct 2023. Estimated typical check: $250K–$750K. Jonathan Brook's latest dated investing activity was in Oct 2023.

Why Jonathan Brook is listed

Named as the only individual (executive officer) on the Form D for SP Alpha Opportunity Fund LLC, a $25M venture fund (Oct 2023).

Source: SEC Form D: SP Alpha Opportunity Fund LLC (Oct 17, 2023)

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Stages
Pre-seed, Seed
Typical check (est.)
$250K–$750K
Latest fund
$25M · Oct 2023
Latest dated activity
Oct 2023

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What does Jonathan Brook invest in?

Sector focus not yet verified

What has Jonathan Brook invested in recently?

  • SP Alpha Opportunity Fund LLC

    Invested through a fund

    Oct 2023

Funds and deal vehicles Jonathan Brook filed with the SEC

  • SP Alpha Opportunity Fund LLC

    Fund · $25M offering

    Oct 2023

Sources

Data refreshed from public sources Oct 15, 2026. Is this you? Remove or correct this profile.