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About
Michael Sutton is an angel investor focused on early-stage cyber security companies, primarily at the seed stage. He was a member of the founding team at Zscaler, where he served as CISO and spent about a decade building the company's research team and shaping its security model. Earlier in his career, he helped build SPI Dynamics (acquired by HP) and iDEFENSE (acquired by VeriSign). After Zscaler's March 2018 IPO, he launched StoneMill Ventures to invest full time, concentrating on the Washington, DC metro area while remaining open to global opportunities.
Contact· published on Michael's own website
Invests in
AI & Machine LearningCybersecurityData & InfrastructureDeep TechEnterprise SoftwareHardware
Beyond investing
- Founded
- Founded StoneMill Ventures, a seed-stage cyber security investment firm. Was a member of the founding team at Zscaler.
From Michael's own website — common ground for a warm intro.
Deals · 31
Lima CharlieSolo GP
via StoneMill Ventures · filed Feb 2024
TodylSolo GP
via StoneMill Ventures · filed Mar 2022
DeepSigSolo GP
via StoneMill Ventures · filed Feb 2020
AnnoSolo GP
AtomicorpSolo GP
CybrarySolo GP
Feroot SecuritySolo GP
FixifySolo GP
FleetSolo GP
GreynoiseSolo GP
Grip SecuritySolo GP
GroupSenseSolo GP
HuntressSolo GP
LucataSolo GP
Orca SecuritySolo GP
RackTop SystemsSolo GP
runZeroSolo GP
ScytheSolo GP
SecurecircleSolo GP
TidalSolo GP
Valence SecuritySolo GP
Viso TrustSolo GP
Vulcan CyberSolo GP
AttilasecSolo GP
BinarlySolo GP
BuildSolo GP
HighsideSolo GP
OpusSolo GP
OxeyeSolo GP
SecuritytrailsSolo GP
TrueFortSolo GP
Attribution from SEC filings, press coverage, and firm rosters. Some rows are inferred. Not right? Tell us.
Other disclosed investments
Investor
Aim SecurityAistrikeAttilabuild.securityCYR3CONFleet Device ManagementGradient MSPGreyNoise IntelligenceLimaCharlieLucata CorporationOnsights.ioOpus SecurityOxeye SecurityRewstScytale.ioSperaSplxAIStepSecuritySublime SecurityThreatMate
Per curated public sources.
Colleagues at Runtime Ventures
Network10
Investors connected to Michael in public investor directories — a warm-intro map.
Frequently asked questions
- Who is Michael Sutton?
- Michael Sutton is an angel investor focused on early-stage cyber security companies, primarily at the seed stage. He was a member of the founding team at Zscaler, where he served as CISO and spent about a decade building the company's research team and shaping its security model. Earlier in his career, he helped build SPI Dynamics (acquired by HP) and iDEFENSE (acquired by VeriSign). After Zscaler's March 2018 IPO, he launched StoneMill Ventures to invest full time, concentrating on the Washington, DC metro area while remaining open to global opportunities.
- Where does Michael Sutton work?
- Michael Sutton is General Partner & Co-Founder at Runtime Ventures.
- What does Michael Sutton invest in?
- Michael Sutton invests in AI & Machine Learning, Cybersecurity, Data & Infrastructure, Deep Tech, Enterprise Software, Hardware.
- What companies has Michael Sutton invested in?
- Investments tracked here include Aim Security, Aistrike, Attila, Binarly, build.security, Cybrary, CYR3CON, DeepSig, Feroot Security, Fixify, Fleet Device Management, Gradient MSP, and 27 more.
About this profile. Compiled from public sources — Runtime Ventures's own website and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights