Thomas H. Stoner Jr.
Managing Partner at SustainTech Hold Co (a Wexford Capital Partner's sponsored entity).
Boulder, Colorado
Thomas H. Stoner Jr., Managing Partner at SustainTech Hold Co (a Wexford Capital Partner's sponsored entity). is an active investor based in Boulder, Colorado. This profile covers what Thomas H. Stoner Jr. backs, at which stage, and how founders can reach out in 2026.
Thomas H. Stoner, Jr. is Managing Partner at SustainTech Hold Co, focused on climate intelligence, risk analytics, and capital markets infrastructure.
Thomas H. Stoner Jr. invests in Climate & Energy, typically at Early Stage Venture and Late Stage Venture.
- Investor type
- VC
- Stages
- Early Stage VentureLate Stage Venture
- Invests in
- Climate & Energy
- Location
- Boulder, Colorado
- Typical check
- $3.8M
How to reach Thomas H. Stoner Jr.
Angels and operators like Thomas H. Stoner Jr. 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.
Reach active investors like this one
About this profile
This profile is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise. How this data is built.
Cite this page
Round Funded. "Thomas H. Stoner Jr.." Round Funded investor database, updated November 2, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/thomas-h-stoner-jr
Frequently Asked Questions
Who is Thomas H. Stoner Jr.?
Thomas H. Stoner Jr., Managing Partner at SustainTech Hold Co (a Wexford Capital Partner's sponsored entity). is an active investor based in Boulder, Colorado. Thomas H. Stoner Jr. invests in Climate & Energy, typically at Early Stage Venture and Late Stage Venture.
What does Thomas H. Stoner Jr. invest in?
Thomas H. Stoner Jr. invests in Climate & Energy, typically at Early Stage Venture and Late Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Thomas H. Stoner Jr. invest at?
Thomas H. Stoner Jr. typically invests at Early Stage Venture and Late Stage Venture. Lead with traction that fits the stage when you reach out.
What is Thomas H. Stoner Jr.'s typical check size?
Thomas H. Stoner Jr. typically writes checks around $3.8M. 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.