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McLain Southworth

Solo GP · Palo Alto, CA

McLain Southworth is a solo GP based in Palo Alto, CA, investing at pre-seed, seed stage. McLain Southworth's most recent fund with a disclosed size, Haven Ventures FUND I, LP, filed a $43.2M offering with the SEC in Jul 2023. Estimated typical check: $425K–$1.3M. McLain Southworth's latest dated investing activity was in Jul 2023.

Why McLain Southworth is listed

Named as one of two individuals (Managing Member of GP of Issuer) on the Form D for Haven Ventures FUND I, LP, a $43.2M venture fund (Jul 2023).

Source: SEC Form D: Haven Ventures FUND I, LP (Jul 31, 2023)

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Stages
Pre-seed, Seed
Typical check (est.)
$425K–$1.3M
Latest fund
$43.2M · Jul 2023
Latest dated activity
Jul 2023

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What does McLain Southworth invest in?

Sector focus not yet verified

What has McLain Southworth invested in recently?

  • Haven Ventures FUND I, LP

    Invested through a fund

    Jul 2023

Funds and deal vehicles McLain Southworth filed with the SEC

  • Haven Ventures FUND I, LP

    Fund · $43.2M offering

    Jul 2023

Sources

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