Number of Portfolio Companies 27
Number of Exits 
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  • Primary Job Title Co-Founder and CEO
  • Primary Organization 
    Slack
  • Investor Type  Individual/Angel
  • Investor Stage  Seed
  • Number of Exits 
Stewart Butterfield is the Co-Founder and CEO at Slack.
Number of Investments 29
Stewart Butterfield has made 29 investments. Their latest investment was Seed Round - Unblocked on Oct 3, 2023, when Unblocked raised
CA$11.3M
.
Announced Date  
Organization Name  
Lead Investor  
Funding Round  
Money Raised  
Oct 3, 2023
Unblocked
Seed Round - Unblocked
CA$11.3M
Sep 14, 2023
Linear
Series B - Linear
$35M
Aug 24, 2023
Panobi
Seed Round - Panobi
$5M
May 30, 2023
Vectara
Seed Round - Vectara
$28.5M
Oct 4, 2022
Humaans
Series A - Humaans
$15M
Aug 22, 2022
ModernLoop
Series A - ModernLoop
$9M
Aug 17, 2022
Venue
Seed Round - Venue
$4M
Jun 6, 2022
Atreo.io
Pre Seed Round - Atreo.io
$4M
Feb 22, 2022
tvg hospitality
Venture Round - tvg hospitality
$50M
Jan 28, 2022
Rise
Angel Round - Rise
$3M
Number of Exits 
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Stewart Butterfield has exits. Their most notable exits are ThingtonSummify, and Etsy.
  • Thington Thington builds a new way to interact with a world of connected things .
  • Summify Summify creates a daily summary of the most relevant news from the user's social networks and delivers it by email, web or mobile.
  • Etsy Etsy is an e-commerce site and a smartphone application for buying and selling handmade and vintage items.
  • Cozy Cozy is an online property management service designed for landlords and renters.
  • 99designs 99designs is the global creative platform that makes it easy for designers and clients to work together create designs they love.
Number of Current Jobs 1
Number of Past Jobs 2
Stewart Butterfield is the Co-Founder and CEO at Slack. Additionally, Stewart Butterfield has had 2 past jobs including General Manager, Flickr / Senior Director of Product Management at Yahoo.
Organization Name  
Title At Company  
Start Date  
End Date  
Yahoo
General Manager, Flickr / Senior Director of Product ManagementApr 2005Jul 2008
Flickr
Co-Founder & CEOMay 2002Apr 2005
Number of Current Board & Advisor Roles 5
Stewart Butterfield holds 5 board and advisor roles including Board Member at Cozy, Manager at City Fertility Centre Global, and Investor & Advisor at Rouxbe.
Number of News Articles 998
Funding RoundOct 3, 2023
Unblocked raised CA$11,300,000 / Seed from Amplify Partners and 5 other investors
Funding RoundSep 14, 2023
Linear raised $35,000,000 / Series B from 01 Advisors and 29 other investors
Funding RoundAug 24, 2023
Panobi raised $5,000,000 / Seed from April Underwood and 7 other investors
Funding RoundMay 30, 2023
Vectara raised $28,500,000 / Seed from Bradley Horowitz and 17 other investors
Funding RoundOct 4, 2022
Humaans raised $15,000,000 / Series A from April Underwood and 14 other investors
Funding RoundAug 22, 2022
ModernLoop raised $9,000,000 / Series A from Accel and 4 other investors
Funding RoundAug 17, 2022
Venue raised $4,000,000 / Seed from Accel and 4 other investors
Funding RoundJun 6, 2022
Atreo.io raised $4,000,000 / Pre Seed from Cal Henderson and 2 other investors
Funding RoundFeb 22, 2022
tvg hospitality raised $50,000,000 / Series Unknown from Adam Tudhope and 29 other investors
Funding RoundJan 28, 2022
Rise raised $3,000,000 / Angel from Adriaan Mol and 2 other investors