Slack

Total raised

$1,511,100,000

Investors

Funding rounds

• IPO

  Diffbot knowledge graph

  UndisclosedJan 1, 2019

• Series H

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  Dragoneer Investment Group, General Atlantic, Baillie Gifford, Wellington Management, Sands Capital Management, T. Rowe Price, Accel, SoftBank Vision Fund

  $427MAug 20, 2018

• Series G

  Diffbot knowledge graph

  SoftBank Vision Fund, Accel, Global Founders Capital, AAFM, Moonshots Capital

  $412.7MSep 16, 2017

• Series F

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  Thrive Capital, Notable Capital, Comcast Ventures, Accel, Index Ventures, Social + Capital Partnership, Institutional Venture Partners (IVP), Lowercase Capital, ACME, Ling Wong

  $208MMar 31, 2016

• Series E

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  Social + Capital Partnership, Horizons Ventures, DST Global, Index Ventures, Spark Capital, Institutional Venture Partners (IVP), Accel, Andreessen Horowitz, GV, Kleiner Perkins, Groupe Arnault, Slow Ventures, FundersClub

  $172.7MApr 15, 2015

• Series D

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  GV (Google Ventures), Kleiner Perkins, Slow Ventures, Initialized Capital, Andreessen Horowitz, Social Capital, Accel

  $120MOct 31, 2014

• Series C

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  Social + Capital Partnership, Accel, Andreessen Horowitz, Jeremy Stoppelman, Anthony Casalena, John Collison, Jeff Weiner, Rob Solomon, Biz Stone, FundersClub, Bryan Rosenblatt, David Sacks

  $42.8MApr 26, 2014

• Series B

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  Accel, Andreessen Horowitz, Next Play Ventures, Alfred Chuang

  $10.7MMar 31, 2011

• Series A

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  Accel, Andreessen Horowitz

  $5MMar 31, 2010

• Seed

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  Accel, Marc Andreessen, Jeff Weiner, Bradley Horowitz, Rob Solomon

  $1.5MDec 31, 2008