Reported in WSJ first, the new round of funding could give it an even higher valuation. The company has raised roughly $340 million so far, including a $160 million Series E round in April 2015.
Slack is often called one of the fastest growing business apps in history. Since its official launch just two years ago, Slack has added 2.3 million monthly active users and says it’s on track to generate roughly $64 million in annual revenue. Just last week, Slack CEO Stewart Butterfield said that 20% of all of its monthly active users started using the app for the first time this year.
The new funding would be a reflection of Slack’s strong growth and investor confidence in the fast-growing startup