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Nathan Kline

Solo GP · New York, NY

Verified active in the last 12 months

Nathan Kline is a solo GP based in New York, NY focused on Healthcare, Climate & Energy, Deep Tech, investing at pre-seed, seed stage. Nathan Kline's most recent fund with a disclosed size, Cistern Wellness Ventures I LP, filed a $5M offering with the SEC in Apr 2025. Nathan Kline has 5 funds and deal vehicles on SEC file, including 4 single-deal SPVs. Estimated typical check: $50K–$150K. Nathan Kline has dated investing activity in the last 12 months (latest May 2026).

Why Nathan Kline is listed

Named as the only individual (Managing General Partner of the General Partner of the Issuer) on the Form D for Cistern Wellness Ventures I LP, a $5M venture fund (Apr 2025) (5 vehicles on file: 1 fund, 4 SPVs).

Source: SEC Form D: Cistern Cyclarity A Series of V360 Holdings LLC (May 1, 2026) · 4 more sources

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Stages
Pre-seed, Seed
Typical check (est.)
$50K–$150K
Latest fund
$5M · Apr 2025
Latest dated activity
May 2026

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What does Nathan Kline invest in?

HealthcareClimate & EnergyDeep Tech

What has Nathan Kline invested in recently?

  • Cistern Wellness Ventures I LP

    Invested through a fund

    Apr 2025

Funds and deal vehicles Nathan Kline filed with the SEC

  • Cistern Cyclarity A Series of V360 Holdings LLC

    Deal vehicle · $500K offering

    May 2026

  • V360 Holdings LLC Series Cistern Trip Fusion

    Deal vehicle · $100K offering

    Nov 2025

  • V360 Holdings LLC Series Cistern Hibiscus Health

    Deal vehicle · $155K offering

    Jul 2025

  • V360 Holdings LLC Series Cistern Juvenescence

    Deal vehicle · $1M offering

    Jul 2025

  • Cistern Wellness Ventures I LP

    Fund · $5M offering

    Apr 2025

Sources

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