John joined Greylock as a partner in 2011. Prior to Greylock, John was CEO of Mozilla, the organization behind Firefox, an open source Web browser used by more than 450 million people. John also co-founded Reactivity, an enterprise security...

Affiliation: SSE Labs

SSE Labs Advisor
Code for America Board Member
Citrus Lane Board of Directors
Instagram Investor
Greylock Partners Partner
ClearSlide Board of Directors
Tumblr Board Observer
Dropbox Investor
Past
Mozilla CEO
SayNow Advisor
Marketcetera Advisor