Smartsheet announced Tuesday that it agreed to be acquired by private equity companies Blackstone and Vista Equity Partners in deal valued at $8.4 billion. The acquisition will make Smartsheet a private company again, six years after the Bellevue, Wash.-based enterprise software company went public.

Vista Equity Partners and Blackstone have agreed to acquire software-as-a-service workplace collaboration platform Smartsheet for $8.4 billion in cash.

Blackstone and Vista Equity Partners are acquiring software maker Smartsheet for $8.4 billion in cash, or $56.50 per share; the deal is expected to close in Smartsheet's fiscal fourth quarter.