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Stewart Butterfield

Co-founder of Slack (CEO until 2022) and Flickr. Hosted fundraiser for Kamala Harris. Major supporter of abortion rights and racial justice causes.

Career History

Co-founder
Jan 1, 2013 – Jan 18, 2022

Track Record

In August 2024, Stewart Butterfield and his wife Jen Rubio hosted a fundraiser for Kamala Harris at their $32.2 million Southampton estate. About 100 people attended with VP candidate Tim Walz, with ticket prices ranging from $6,600 to $150,000. Celebrities including Chris Rock and Joy Behar attended. The couple also hosted a separate Harris fundraiser on August 31, 2024.

Stewart Butterfield left Salesforce/Slack in January 2023, admitting he 'wasn't very successful' at integrating the two cultures after the $27B acquisition closed in mid-2021. At January 5, 2023 all-hands meeting, employees expressed anxiety: 'There's a strong culture clash between Salesforce and Slack. How did we get here culturally?' Employees questioned whether Slack was a strategic priority within Salesforce. His departure came one week after Salesforce co-CEO Bret Taylor's resignation, alongside Slack's product chief and marketing VP. Salesforce then announced 10% layoffs shortly after.