Stewart Butterfield is the founder and CEO of Slack.
Previously, Butterfield was the co-founder of popular photo-sharing website Flickr and its parent company Ludicorp with his wife Caterina Fake. In April 2009, he was reported to be leaving his position at Flickr to start a new stealth social gaming company with Cal Henderson.
In March 2005, Fake and Butterfield sold Flickr to Yahoo barely a year after launching it, reportedly for more than $30 million. Butterfield remains with the company, and serves as Director of Product Management.
He has also founded the 5k competition, served on the W3C's XForms working group, been nominated for a Chrysler Design Award, and is a frequent speaker on design and technology topics at professional and academic events across Europe and North America.
On June 13th, 2008 Stewart sent in his resignation letter.
|Aug, 2016||Cozy||$8.5M / Series B||Personal Investment|
|May, 2016||Front App||$10M / Series A||Personal Investment|
|Apr, 2016||Intercom||$50M / Series C||Personal Investment|
|Aug, 2015||Cozy||$3.37M / Series A||Personal Investment|
|Apr, 2015||Thington||undisclosed amount / Angel||Personal Investment|
|Apr, 2011||99designs||$35M / Series A||Personal Investment|
|Mar, 2011||Bloom Studio||undisclosed amount / Seed||Personal Investment|
|Mar, 2011||Summify||undisclosed amount / Angel||Personal Investment|
|Jan, 2009||Rouxbe||$2.1M / Series B||Personal Investment|
|Jan, 2008||Flowgram||$1.3M / Seed||Personal Investment|
|Nov, 2006||Etsy||$1M / Series A||Personal Investment|
|Jul 21, 2016||VOA - Economy - Silicon Valley's Yahoo Diaspora Mourns Company's Decline|
|Jul 21, 2016||Channel News Asia - Tech - Silicon Valley's Yahoo diaspora mourns company's decline|
|Jul 19, 2016||Business Insider (tech) - Slack has quietly invested in a chatbot company|
|Jul 15, 2016||Tech Spot - Silicon Valley leaders say a Trump presidency would be a disaster for the tech industry|
|Jul 15, 2016||Business Insider Australia - More than 140 tech leaders agree: 'Trump would be a disaster for innovation'|
|Jul 14, 2016||TechCrunch - Tech comes out against Donald Trump|
|Jul 14, 2016||CNBC - An open letter from technology sector leaders on Donald Trump’s candidacy for president|
|Jul 14, 2016||Quartz - Tech - “Trump would be a disaster for innovation”: An open letter from Silicon Valley leaders|