About Lars Letonoff
Lars Letonoff is a co-founder and CEO, director at Guardare.
Lars Letonoff reports to the SEC as an officer of 1 public company: KnowBe4 (KNBE).
Lars Letonoff first appears on SEC filings in 2021.
Experience
This experience comes from Lars Letonoff's profile and from SEC filings. For roles taken from filings, the years are when the filings name Lars Letonoff in the role, so the role may have started earlier or lasted longer.
Guardare, Inc. Current
Co-Founder & CEO (2024 – Present)
Director
2024 – Present · Clearwater, FL
Cybersecurity software that helps organizations find and prioritize risks across their existing security tools.
DA
DataDome Current
Board Member
2022 – Present
LC
Limble CMMS
Board Member
2022 – 2026
KI
KnowBe4, Inc.
Co-President & Chief Revenue Officer
2011 – 2023 · Public company (KNBE)
SS
Sunbelt Software
Enterprise Account Manager
2007 – 2011
PM
Prudent Bay Capital Mangement
Chief Investment Officer, CEO
2005 – 2007
TM
Thunder Capital Management
Head of Trading
2003 – 2005
AG
Avalon Research Group
Director, Head of Trading
2002 – 2003
BM
Bull Dog Capital Management
Portfolio Manager/Head of Trading
1999 – 2002
Key Colleagues at Startups
The people Lars Letonoff works with at each company, as listed on that company's latest Form D.
Guardare, Inc. · Form D/A, Oct 7, 2026
TJ
Thomas Fiori, Jr.
Executive officer and director