William Weissman, Venture investor in Wheaton is an active investor based in Wheaton, Illinois. This profile covers what William Weissman backs, at which stage, and how founders can reach out in 2026.
William (Bill) Weissman is a Venture Partner at RSVP Ventures with over 20 years of experience leading early-stage technology companies through international expansion.
William Weissman invests in SaaS & Enterprise and Hardware & Deep Tech, typically at Early Stage Venture.
- Investor type
- VC
- Stages
- Early Stage Venture
- Invests in
- SaaS & EnterpriseHardware & Deep Tech
- Location
- Wheaton, Illinois
- Typical check
- $500K
How to reach William Weissman
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Round Funded. "William Weissman." Round Funded investor database, updated November 3, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/william-weissman
Frequently Asked Questions
Who is William Weissman?
William Weissman, Venture investor in Wheaton is an active investor based in Wheaton, Illinois. William Weissman invests in SaaS & Enterprise and Hardware & Deep Tech, typically at Early Stage Venture.
What does William Weissman invest in?
William Weissman invests in SaaS & Enterprise and Hardware & Deep Tech, typically at Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does William Weissman invest at?
William Weissman typically invests at Early Stage Venture. Lead with traction that fits the stage when you reach out.
What is William Weissman's typical check size?
William Weissman 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.