Hal Stillman
Member of Investment Committee at Zero Waste Fund - One Planet Ventures
Greenwich, Connecticut
Hal Stillman, Member of Investment Committee at Zero Waste Fund - One Planet Ventures is an active investor based in Greenwich, Connecticut. This profile covers what Hal Stillman backs, at which stage, and how founders can reach out in 2026.
Hal is an inventor, entrepreneur, and venture investor with a career focused on overcoming difficult technological challenges.
Hal Stillman invests in Climate & Energy and Hardware & Deep Tech, typically at Early Stage Venture.
- Investor type
- VC
- Stages
- Early Stage Venture
- Invests in
- Climate & EnergyHardware & Deep Tech
- Location
- Greenwich, Connecticut
- Typical check
- $500K
How to reach Hal Stillman
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Round Funded. "Hal Stillman." Round Funded investor database, updated November 3, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/hal-stillman
Frequently Asked Questions
Who is Hal Stillman?
Hal Stillman, Member of Investment Committee at Zero Waste Fund - One Planet Ventures is an active investor based in Greenwich, Connecticut. Hal Stillman invests in Climate & Energy and Hardware & Deep Tech, typically at Early Stage Venture.
What does Hal Stillman invest in?
Hal Stillman invests in Climate & Energy and Hardware & Deep Tech, typically at Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Hal Stillman invest at?
Hal Stillman typically invests at Early Stage Venture. Lead with traction that fits the stage when you reach out.
What is Hal Stillman's typical check size?
Hal Stillman 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.