Slack Capital Raised

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Slack Valuation

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Slack Funding Rounds Summary

Slack's latest funding round in August 2018 was reported to be $427 m. In total, Slack has raised $1.3 b. Slack's latest valuation is reported to be $7.1 b.

Slack Funding Rounds

DateAmount RaisedPost-money ValuationInvestors

Seed

Jan 2009$1.5 mAccel Partners, Bradley Horowitz, Jeff Weiner, Marc Andreessen, Rob Solomon

Series A

Mar 2010$8.1 m$23.5 mAccel Partners, Andreessen Horowitz

Series B

Apr 2011$10.7 m$77.4 mAccel Partners, Andreessen Horowitz

Unattributed

Apr 2013FundersClub

Series C

Apr 2014$42.7 m$280.0 mAccel Partners, Andreessen Horowitz, Anthony Casalena, Biz Stone, Bradley Horowitz, Jeff Weiner, Jeremy Stoppelman, John Collison, Patrick Collison, Rob Solomon, Social Capital

Series D

Oct 2014$120.0 m$1.1 bAccel Partners, Andreessen Horowitz, GV, Kleiner Perkins Caufield & Byers, Slow Ventures, Social Capital

Series D-1

Dec 2014$3.3 m$1.1 b

Series E

Apr 2015$160.0 m$2.8 bAccel Partners, Andreessen Horowitz, DST Global, GV, Groupe Arnault, Horizons Ventures, IVP (Institutional Venture Partners), Index Ventures, Kleiner Perkins Caufield & Byers, Social Capital, Spark Capital

Series E-1

May 2015$37.9 m$3.0 b

Series F

Mar 2016$167.0 m$3.8 bAccel Partners, Comcast Ventures, GGV Capital, IVP (Institutional Venture Partners), Index Ventures, Social Capital, Thrive Capital

Series F-1

Apr 2016$53.0 m$3.8 bAccel Partners, Comcast Ventures, GGV Capital, IVP (Institutional Venture Partners), Index Ventures, Social Capital, Thrive Capital

Series G

Sep 2017$250.0 m$4.8 bAccel Partners, Global Founders Capital, SoftBank Capital

Series H

Aug 2018$427.0 m$7.1 bBaillie Gifford, Dragoneer Investment Group, General Atlantic, General Atlantic, Sands Capital Ventures, T. Rowe Price, Wellington Management