Nathan Kline
Solo GP · New York, New York
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).
Angel Investment Confidence Score
Algorithmic score indicating recent deal velocity, check size reliability, and investment conviction in early-stage startups.
Why Nathan Kline holds a 84/100 confidence score
- Verified active check-writing activity within the last 12 months
- Target check sizes calibrated between $50K–$150K
- Clear domain thesis in Healthcare, Climate & Energy, Deep Tech
- 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).
Building in Healthcare, Climate & Energy, Deep Tech? See how well your pitch deck matches Nathan Kline’s thesis.
Check My Startup FitVerified investment track record
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
- Stages
- Pre-seed, Seed
- Typical check (est.)
- $50K–$150K
- Verified deals
- 1 on file
- Latest activity
- May 2026
Is Nathan Kline a fit for you?
See your AI startup fit score, verified contact channels, and warm paths through your network.
What sectors does Nathan Kline back?
HealthcareClimate & EnergyDeep TechVerified investments & deal activity
1 deal trackedRecent startup investments, syndicate rounds, and public co-investments across the US and Europe.
- Apr 2025
Cistern Wellness Ventures I LP
Invested through a fund
Public Verification Sources
- SEC Form D: Cistern Cyclarity A Series of V360 Holdings LLCMay 1, 2026
- SEC Form D: V360 Holdings LLC Series Cistern Trip FusionNov 5, 2025
- SEC Form D: V360 Holdings LLC Series Cistern Hibiscus HealthJul 30, 2025
- SEC Form D: V360 Holdings LLC Series Cistern JuvenescenceJul 30, 2025
- SEC Form D: Cistern Wellness Ventures I LPApr 2, 2025
Data refreshed from SEC filings and public European announcements Oct 15, 2026. Is this you? Correct or remove this profile.
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Raising pre-seed or seed for your startup?
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