Sigma Prime Ventures is a venture capital firm. Based in Boston, Massachusetts, United States. Among the 9 companies in the known portfolio are NS1, Phenom, Vestorly, BlueConic, Contently and Nasuni.
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Investment focus
Who to pitch at Sigma Prime Ventures
Sigma Prime Ventures portfolio companies (9)
- NS1
- Phenom
- Vestorly
- BlueConic
- Contently
- Nasuni
- aPriori Technologies
- Ceros
- Paradigm4
Co-investors
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About Sigma Prime Ventures
The firm's listing covers sectors AI, Consumer and SaaS, and focus areas Analytics, Cloud Infrastructure, Content and Customer Support; known deals cluster at Growth, Late-Stage and Seed.
The contacts to approach at Sigma Prime Ventures are John Simon (Managing Director), Jere Doyle (Managing Director) and Paul Flanagan (Managing Director).
Across the known portfolio, 14 co-investors appear alongside Sigma Prime Ventures, including Sigma Partners, GoldenArc Capital and CVP.
Frequently asked questions
What is Sigma Prime Ventures?
Sigma Prime Ventures is a venture capital firm based in Boston, Massachusetts, United States, with a known portfolio of 9 companies. The portfolio comes from public investment records rather than from the firm, so deals that never surfaced publicly are not in it.
What does Sigma Prime Ventures invest in?
Listed sectors include AI, Consumer and SaaS; listed focus areas include Analytics, Cloud Infrastructure, Content and Customer Support. Those tags come from the portfolio attached to the firm, so they describe what has been backed rather than a stated mandate for what comes next.
What stage does Sigma Prime Ventures invest at?
The known deals of Sigma Prime Ventures include Growth, Late-Stage and Seed rounds. Check that against your own round before reaching out: stage mismatch is the most common reason a well matched sector still goes nowhere.
Who should I pitch at Sigma Prime Ventures?
All 3 people on file at Sigma Prime Ventures are listed as contacts for the firm, each with their own profile page.
How do I contact Sigma Prime Ventures?
Any email address on file for the firm is masked on this page and readable inside RaiseHunt after you create an account. The 3 people attached to the firm have their own pages, each showing whether an address is on file for them.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal