David Paul Morris | Bloomberg | Getty Images
Stewart Butterfield, co-founder and CEO of Slack Technologies Inc. at the South By Southwest (SXSW) Interactive Festival on Tuesday, March 15, 2016.
As Slack gives up to markets through an unconventional direct listing, equity operations in private Markets at a price that appreciates the company by nearly $ 17 billion, according to Forge Global, a company that matches private companies and their employees with investors.
According to A person familiar with the company's plans, Slack plans to disclose the listing prospect as soon as Friday. The Wall Street Journal first reported on the timing.