Headquarters Regions San Francisco Bay Area, West Coast, Western USFounded Date Jan 1, 2009Founders Cal Henderson, Eric Costello, Serguei Mourachov, Stewart ButterfieldOperating Status ActiveFunding Status IPOLast Funding Type Secondary MarketNumber of Employees 1001-5000Legal Name Slack Technologies, Inc.Related Hubs Slack Portfolio CompaniesHub Tags Exited Unicorn IPO Status PublicStock Symb