StoneMill Ventures is a cyber security-focused investment firm that primarily invests at the seed stage. The firm seeks out disruptive cyber security companies and prefers to work closely with founding teams that can benefit from their extensive experience in building pioneering security companies. While StoneMill Ventures is based in the Washington, DC metro area, they are open to global investments given the right opportunity.
Notable portfolio companies include Cybrary, GreyNoise Intelligence, and Todyl. Michael Sutton, a key partner at StoneMill Ventures, previously served as the Chief Information Security Officer (CISO) at Zscaler. StoneMill Ventures emphasizes an active investment approach, offering hands-on support and leveraging their industry expertise to help portfolio companies succeed.
StoneMill Ventures - Portfolio Snapshot
Portfolio activity breakdown across disclosed investments and stages
Total Investments21
Current Portfolio Count18
Total Portfolio Exits0
Top Investment Stages
Seed11 (55.0%)
Series A6 (30.0%)
Convertible Note1 (5.0%)
Pre-Seed1 (5.0%)
Series B1 (5.0%)
Stage Mix
Seed 55%Series A 30%Convertible Note 5%Pre-Seed 5%Series B 5%
Concentration shown as share of disclosed investments by stage.
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StoneMill Ventures - Classification
- Also Known As
- Stonemill Ventures LLC
- NAICS
- 520000Finance and Insurance
- 523000Securities, Commodity Contracts, and Other Financial Investments and Related Activities
- 523900Other Financial Investment Activities
- 523990All Other Financial Investment Activities
- 523999Miscellaneous Financial Investment Activities
- SIC
- 6700Holding And Other Investment Offices
- 6790Miscellaneous Investing
- 6799Investors, Not Elsewhere Classified
Show 9 more industry codes
- NAICS
- 540000Professional, Scientific, and Technical Services
- 525000Funds, Trusts, and Other Financial Vehicles
- 541000Professional, Scientific, and Technical Services
- 523910Miscellaneous Intermediation
- 523940Portfolio Management and Investment Advice
- SIC
- 6000Depository Institutions
- 7300Business Services
- 6720Investment Offices
- 6722Management Investment Offices, Open-end