Sam Witherspoon
Principal, Portfolio Manager, & Analyst at Vigilant Capital Management, LLC
Portsmouth, New Hampshire
Sam Witherspoon, Principal, Portfolio Manager, & Analyst at Vigilant Capital Management, LLC is an active investor based in Portsmouth, New Hampshire. This profile covers what Sam Witherspoon backs, at which stage, and how founders can reach out in 2026.
Sam Witherspoon chairs the Investment Policy Committee and serves as a Portfolio Manager and Investment Analyst responsible for the healthcare sector.
Sam Witherspoon invests in Healthcare & Biotech, typically at Early Stage Venture and Late Stage Venture.
- Investor type
- VCFamily Office
- Stages
- Early Stage VentureLate Stage Venture
- Invests in
- Healthcare & Biotech
- Location
- Portsmouth, New Hampshire
- Typical check
- $3.8M
How to reach Sam Witherspoon
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Round Funded. "Sam Witherspoon." Round Funded investor database, updated November 3, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/sam-witherspoon
Frequently Asked Questions
Who is Sam Witherspoon?
Sam Witherspoon, Principal, Portfolio Manager, & Analyst at Vigilant Capital Management, LLC is an active investor based in Portsmouth, New Hampshire. Sam Witherspoon invests in Healthcare & Biotech, typically at Early Stage Venture and Late Stage Venture.
What does Sam Witherspoon invest in?
Sam Witherspoon invests in Healthcare & Biotech, typically at Early Stage Venture and Late Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Sam Witherspoon invest at?
Sam Witherspoon typically invests at Early Stage Venture and Late Stage Venture. Lead with traction that fits the stage when you reach out.
What is Sam Witherspoon's typical check size?
Sam Witherspoon 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?
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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.