Last updated 2026-07-20
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About
StoneMill Ventures is a venture capital firm founded in 2018 that specializes in seed-stage cybersecurity investments. The firm actively seeks out founding teams that can benefit from their experience in building pioneering security companies. While they primarily focus on the Washington, DC metro area, they also invest globally and have a notable portfolio of Israeli cybersecurity companies. Michael Sutton is the founding partner. [3, 4, 5, 8, 9, 13]
Portfolio
No portfolio companies in this dataset yet.
Investment activity
Portfolio by sector
Cyber Security2
Q&A
- What is StoneMill Ventures' primary investment focus?
- StoneMill Ventures primarily focuses on the Cyber Security sector, with all of its known portfolio companies operating in this area.
- Can you name some of StoneMill Ventures' portfolio companies?
- StoneMill Ventures' portfolio includes Grip Security, which focuses on.
- What is the typical investment stage for StoneMill Ventures?
- According to startupim data, StoneMill Ventures has participated in Seed stage rounds.
- When did StoneMill Ventures make its most recent investments?
- StoneMill Ventures made investments in April 2021 and October 2021.
- What was the funding stage and amount for Grip Security?
- Grip Security raised $66M in a Series B round.
- What was the funding stage and amount for Valence Security?
- Valence Security raised $32M in a Series A round.
- What is the typical investment range for StoneMill Ventures?
- StoneMill Ventures typically invests in the range of $6M - $7M.
Full data — links, identifiers, deals & radar signals (jobs, patents, research, more)
Identifiers & details
| Founded | 2018 |
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