William Barnes
Founding Partner at Karman Ventures
Austin, Texas
William Barnes, Founding Partner at Karman Ventures is an active investor based in Austin, Texas. This profile covers what William Barnes backs, at which stage, and how founders can reach out in 2026.
- Investor type
- AngelVCPE
- Stages
- Early Stage Venture
- Invests in
- Artificial IntelligenceSpace & AerospaceMobility & LogisticsRobotics & AutomationConsumer Goods (CPG)SaaS & Enterprise
- Location
- Austin, Texas
- Typical check
- $500K
- Past investments
- 16
Notable investments
Toolbx
SuperhumanGoEuro
Cargo
CloudApp
JUMP Bikes
SALIDOBird RidesStop Breathe Think PBC
Onna
ReplicatedHow to reach William Barnes
Angels and operators like William Barnes reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded.
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About this profile
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Cite this page
Round Funded. "William Barnes." Round Funded investor database, updated September 9, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/william-barnes
Frequently Asked Questions
What does William Barnes invest in?
William Barnes invests in Artificial Intelligence, Space & Aerospace, Mobility & Logistics and Robotics & Automation, typically at Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does William Barnes invest at?
William Barnes typically invests at Early Stage Venture. Lead with traction that fits the stage when you reach out.
What is William Barnes's typical check size?
William Barnes typically writes checks around $500K. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
Round Funded lists active investors with verified, professional contact details for signed-up founders. Filter by sector, stage and location, then send a personalized pitch from your own inbox.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.