John Lilly
InvestorPartner at Greylock Partners · Advising Partner at Gigascale Capital
San Francisco Bay Area
About
John Lilly is an Advising Partner at Gigascale Capital with roughly 30 years of experience as a founder, CEO, and investor. He previously spent 8 years as a General Partner at Greylock and was CEO of Mozilla, where he oversaw Firefox's growth. Earlier he co-founded the enterprise security company Reactivity, later acquired by Cisco, and held roles at Apple and Trilogy Software. He is also a Lecturer at Stanford's Graduate School of Business and holds BS and MS degrees from Stanford.
Invests in
CybersecurityEnterprise Software
Experience
- Gigascale CapitalAdvising Partnercurrent2026 — present
- FigmaBoard Membercurrent2014 — present
- DuolingoBoard Membercurrent2021 — present
- VotingWorksBoard Membercurrent2018 — present
- NuroBoard Membercurrent2019 — present
- Greylock PartnersVenture Partnercurrent2019 — present
- Greylock PartnersPartner2011 — 2019
- Stanford UniversityConsulting Assistant Professor & Lecturercurrent2008 — present
- Code for AmericaChair, Board Of Directors2017 — 2025
- Code for AmericaBoard Member2012 — 2025
- ClockwiseBoard Member2018 — 2025
- CaffeineBoard Member2016 — 2024
- MozillaBoard Member2006 — 2014
- MozillaCEO2008 — 2010
- MozillaChief Operating Officer & Board Member2005 — 2007
- TripItBoard of Directors2008 — 2010
- Sunnyvale Public LibraryMember, Board of Trustees2005 — 2009
- Open Source Applications FoundationMember, Board of Directors2001 — 2008
- Reactivity (acquired by Cisco)CTO, VP Products, Board of Directors & Founder2001 — 2004
- Reactivity (acquired by Cisco)CEO, Board of Directors & Founder1998 — 2000
Education
- Stanford UniversityMS, Computer Science1993 — 1995
- Stanford UniversityBS, Computer Systems Engineering1989 — 1993
Skills & more
+12 more
Product ManagementBusiness DevelopmentUser Interface DesignScalabilityStart-upsUser InterfaceStrategic PartnershipsUser-centered DesignWeb DevelopmentEntrepreneurshipMobile DevicesLeadershipFrom John's professional profile.
Same school
Also attended Stanford University1,578
+ 1,572 more
Shared employers
Also worked at Nuro4
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Also worked at Stanford University402
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+ 396 more
Also worked at Mozilla31
+ 25 more
Also worked at Reactivity (acquired by Cisco)249
+ 243 more
Deals · 3
Quip, Inc.Board seat
via Greylock Partners · filed Jul 2016 · $31M raise
FigmaBoard seat
via Greylock Partners · filed Dec 2015 · $14M raise
DwnldBoard seat
via Greylock Partners · filed Sep 2015 · $17.1M raise
Attribution from SEC filings, press coverage, and firm rosters.
Colleagues at Greylock Partners
Network2
Investors connected to John in public investor directories — a warm-intro map.