Stewart Butterfield

Stewart Butterfield Slack founder. Canadian. Less political than US tech leaders.

Stewart Butterfield sold Slack to Salesforce. Employees got payouts but then faced Benioff layoffs.

Stewart Butterfield and partner Jen Rubio donated $25 million to UNICEF in April 2021 to support equitable global COVID-19 vaccine distribution through the COVAX initiative. On Good Morning America, Butterfield challenged other tech leaders to donate, noting "UNICEF vaccinate[s] 45 percent of the world's children." Earlier, in 2015, Butterfield pledged personal Slack shares to Science World British Columbia to foster science literacy.