About Duncan Greatwood
Duncan Greatwood is CEO and director at Xage Security.
Duncan Greatwood first appears on SEC filings in 2018.
Experience
This experience comes from Duncan Greatwood's profile and from SEC filings. For roles taken from filings, the years are when the filings name Duncan Greatwood in the role, so the role may have started earlier or lasted longer.
Xage Security, Inc. Current
Chief Executive Officer (2017 – Present)
Director
2017 – Present · Palo Alto, CA
Cybersecurity software that controls access to critical systems for businesses and infrastructure operators.
CO
Considering
CEO
2016 – 2017
AP
Apple
Apple Search
2013 – 2016
TL
Topsy Labs
C.E.O.
2011 – 2013
CI
Cisco
Cisco WebEx Mail
2003 – 2010
VC
Virata Corporation
VP Marketing / Business Development
1997 – 2002
MA
Madge
Engineering / Marketing
1989 – 1996
Key Colleagues at Startups
The people Duncan Greatwood works with at each company, as listed on that company's latest Form D.
Xage Security, Inc. · Form D, Mar 18, 2026
GM
Geoffrey Mattson
Executive officer
SM
Sumant Mandal
Director
Susanto Irwan
Co-Founder, President, and CTO, director
MG
Mark Gudiksen
Director