Stewart Butterfield

Founder & CEO

Co-founder and CEO of Slack (2013-2022). Previously co-founded Flickr, which was sold to Yahoo for $35 million in 2005. Born in Canada, studied philosophy at the University of Victoria and Cambridge. Founded Tiny Speck in 2009 to build the game Glitch, which pivoted to become Slack.

Overview

Companies
1
Roles
Founder & CEO

Companies

1 company
Slack $1.4B
Acquired Founder & CEO

Workplace messaging and collaboration platform that transformed business communication. Originally built as an internal tool at Tiny Speck during development of the game Glitch, then pivoted to become the fastest-growing enterprise software company in history.

Founder data is compiled from company records, public announcements, and verified sources. Roles reflect current or most recent known positions.