@CNN: Slack valued at $5.1 billion after securing significant new investment money https://t.co/nL6GJg4HM7 https://t.co/0LBaH1vIr4
Slack valued at $5.1 billion after securing significant new investment money https://t.co/nL6GJg4HM7 http://pic.twitter.com/0LBaH1vIr4
— CNN (@CNN) September 19, 2017