Sigma Prime Ventures, Llc
Campbell · Series A–Series B · 5 people tracked
Investment thesis
Early-stage investor focused on Boston, New York and Atlanta in SaaS, cloud, mobile and technology-enabled service companies; team brings operator experience—10 founded, 10 run, $4.2B+ exits.
Source: firm website, verified Jul 28, 2026.
Team · 5 people
from the firm's website
Paul Flanagan is a highly selective investor—only six investments in five years—who commits to 4–6 year board roles and uniquely steps into operating CEO/CFO positions, as he did at Nasuni.
Jere Doyle, a serial founder-operator turned VC who built and exited two martech companies, combines hands-on board roles with academic leadership at Boston College and a structured coaching platform.
John Mandile's two decades as entrepreneur and business-unit manager inform a hands-on investing style; founding Social Ventures.org and long-term chairing of Health Leads show his commitment to health equity.
John Simon, a General Catalyst co‑founder who built UroMed into a several‑hundred‑million‑dollar public company, backs founders with world‑leading domain expertise and demands evidence of customer demand before fundraising.
Robert Davoli, a bootstrapped founder who sold SQL Solutions for over $100M without VC, turned $45.5M into $2B+ and released 30+ track folk/blues album donating proceeds to Food Not Bombs.
Frequently asked questions
- What stage does Sigma Prime Ventures, Llc invest at?
- Sigma Prime Ventures, Llc invests at the Series A, Series B stages.
- What is Sigma Prime Ventures, Llc's typical check size?
- Sigma Prime Ventures, Llc typically writes checks of $1M – $10M.
- What sectors does Sigma Prime Ventures, Llc focus on?
- Sigma Prime Ventures, Llc focuses on AI & Machine Learning, Data & Infrastructure, Enterprise Software, SaaS.
- Where is Sigma Prime Ventures, Llc located?
- Sigma Prime Ventures, Llc is headquartered in Campbell, US.
- Does Sigma Prime Ventures, Llc lead rounds?
- Sigma Prime Ventures, Llc typically participates in rounds rather than leading them.
Similar investors
83North is a global venture capital firm that invests in and helps entrepreneurs build large, category-leading companies across Europe, Israel, and the US.
Accel is a venture capital firm that partners with exceptional founding teams, positioning itself as a first partner to startups globally.
Bessemer Venture Partners is a venture capital firm that partners with entrepreneurs from early stages through every stage of growth, publishing investment roadmaps across multiple technology sectors.
Blumberg Capital is an early-stage venture capital firm that partners with founders from inception through exit, investing in companies applying AI and other transformative technologies.
DCVC (Data Collective) is a venture capital firm that backs founders building companies which apply technology to major challenges across areas such as energy, biotech, agriculture, and machine learning.