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William Barnes

Solo GP · Austin, Texas

US Angel

Named as the only individual (Manager of the General Partner of the Issuer) on the Form D for Karman Ventures Fund 1, LP, a $41.6M venture fund (Jun 2025) (6 vehicles on file: 2 funds, 4 SPVs).

Investor IntelligenceVerified Activity

Angel Investment Confidence Score

Algorithmic score indicating recent deal velocity, check size reliability, and investment conviction in early-stage startups.

78/ 100
Selective Early-Stage AngelLatest deal Jun 2025
Deal VelocityLatest deal Jun 2025USA & Europe pipeline
Typical Check$425K–$1.25MPre-Seed / Seed
Primary FocusSpacePre-seed, Seed
Direct AccessWarm Intro Recommended1-click pitch match

Why William Barnes holds a 78/100 confidence score

  • Verified past startup investments on public record
  • Target check sizes calibrated between $425K–$1.25M
  • Clear domain thesis in Space
  • Named as the only individual (Manager of the General Partner of the Issuer) on the Form D for Karman Ventures Fund 1, LP, a $41.6M venture fund (Jun 2025) (6 vehicles on file: 2 funds, 4 SPVs).

Building in Space? See how well your pitch deck matches William Barnes’s thesis.

Check My Startup Fit

Verified investment track record

Named as the only individual (Manager of the General Partner of the Issuer) on the Form D for Karman Ventures Fund 1, LP, a $41.6M venture fund (Jun 2025) (6 vehicles on file: 2 funds, 4 SPVs).

Source: SEC Form D: Karman Ventures Fund 1, LP (Jun 10, 2025) · 5 more sources

Stages
Pre-seed, Seed
Typical check (est.)
$425K–$1.25M
Verified deals
2 on file
Latest activity
Jun 2025
Pitch Readiness

Is William Barnes a fit for you?

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What sectors does William Barnes back?

Space

Verified investments & deal activity

2 deals tracked

Recent startup investments, syndicate rounds, and public co-investments across the US and Europe.

  • Karman Ventures Rocket II, LP

    Invested through a fund

    Feb 2024
  • Karman Ventures Fund 1, LP

    Invested through a fund

    Sep 2023

Public Verification Sources

Data refreshed from SEC filings and public European announcements Oct 15, 2026. Is this you? Correct or remove this profile.

Syndicate IntelligenceUSA & Europe

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92/100
$545K–$1.06MActive Jul 2026
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Alissa Peterson

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86/100
$835KActive Feb 2026
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AI Pitch & Angel Matcher

Raising pre-seed or seed for your startup?

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