Investing Profile

Stewart Butterfield

Angel

CEO & Co-founder at Slack Technologies, Inc

Your Intro Paths to Stewart Butterfield

Signal uses Gmail to reveal intro paths. Email content is never read.

Networks Stewart is a member of

University of Cambridge Network

356 CONNECTIONS

Yahoo Network

203 CONNECTIONS

Slack Network

47 CONNECTIONS

Cardiaccs AS Network

38 CONNECTIONS

Cardiaccs AS Network

38 CONNECTIONS

Find Stewart Butterfield on

Current Investing Position

Slack Technologies, Inc

Investments On Record

Stewart Butterfield's Investments On Record (33)

Company	StageDateRound Size	Total Raised
Centralize	Series AJul 2026$15M	$16M
Co-investors: Hilarie Koplow-McAdams (New Enterprise Associates (NEA)), Diana Hu (Y Combinator)
Viktor	Series AMay 2026$75M	$75M
Co-investors: Zhenya Loginov (Accel), Nat Friedman (Self-employed), Alex Bouaziz (Sarona Ventures), Guillermo Rauch (Vercel), Max Mullen (Instacart), Daniel Gross (Various), Shaan Puri (The Milk Road), Lenny Rachitsky (Self-employed), Harry Stebbings (Stride.VC), Koen Bok (Festina), Nico Rosberg (Rosberg Ventures), Charlie Songhurst
Beside	Series AOct 2025$20M	$20M
Co-investors: Jean Charles Samuelian (Mistral AI), Kaushik Subramanian (EQT Ventures), Mathilde Collin, Pierre Valade
Lovable	Series AJul 2025$200M	$1.4B
Co-investors: Zhenya Loginov (Accel), Firat Ileri (Hummingbird Ventures), Ben Fletcher (Accel-KKR), Laela Sturdy (CapitalG), Fredrik Cassel (Creandum), Matt Murphy (Kleiner Perkins), Stefan Lindeberg (Further Than Capital), Sara Rywe (byFounders), Thomas Cuvelier (none), Christian Reber (Freigeist), Robert Lacher (La Famiglia), Linda Tong (DN Capital), Job van der Voort (Remote First Capital), Melissa Tan (Various Startups), Dharmesh Shah, George Kurtz, Fredrik Hjelm, Gwyneth Paltrow, Adam D'Angelo, Charlie Songhurst
Unblocked	Series AMay 2025$20M SeedOct 2023$8M	$28M
Co-investors: Mike Vernal (Sequoia Capital), John Lilly (Greylock), Bubba Murarka (DFJ/Draper Associates/Draper University), Yan-David Erlich (B Capital Group), Milun Tesovic (Expansive Ventures), Rob Toews (Radical Ventures), Nitay Joffe (Team8), Mike Abbott, Quinn Slack, Eric Futoran
Neo Financial	Series DNov 2024$79M	$290M
Co-investors: Matthew Caspari (Alumni Ventures ), Andrew McCormack (Valar Ventures), Shawn Abbott (Moving Capital), Ron Pragides (GTMFund), Paul Lee (Builders VC), Tobias Lutke
Noded Ai	SeedJul 2024$4M	$4M
Co-investors: Shomik Ghosh (Sierra Ventures), Frederic Kerrest
Linear	Series BSep 2023$35M	$130M
Co-investors: Stephanie Zhan (Sequoia Capital), Christina Cacioppo (Union Square Ventures), Jeff Weinstein (FJ Labs), Akash Garg (Electric Capital), Emilie Choi (Coinbase Ventures), Robert Gentz (Unknown Ventures), Guillermo Rauch (Vercel), Dick Costolo (01 Advisors), Immad Akhund (Y Combinator), Miles Clements (Accel-KKR), Lauren Loktev (NextLadder Ventures), Jeff Chang (Alex Angels (Alexandria Angel Network)), Marc McCabe (Nomad Capital), Julia DeWahl (Elkhorn Ranch), Dylan Field (Figma, Inc.), Gustaf Alströmer (Angel investor), Bobby Goodlatte (Notable Capital (formerly GGV Capital)), Jude Gomila (Golden (Recursion Inc)), Charlie Cheever (Export Development Canada \| Exportation et développement Canada), Tikhon Bernstam (Uncommon Capital), Adam Bain (01 Advisors), Lenny Rachitsky (Self-employed), Harry Stebbings (Stride.VC), Aston Motes (UnitedMasters), Koen Bok (Festina), Claire Hughes Johnson

Stewart Butterfield's Experience

CEO & Co-founder Slack Technologies, Inc2009 - Present

Director of the Design Group at Communicate.com EvidiPresent

Managing Director and Company Secretary Cardiaccs ASPresent

General Manager, Flickr / Senior Director of Product Management YahooPresent

CEO & Co-founder Cardiaccs ASPresent

CEO & Co-founder SlackPresent

Stewart Butterfield's Education

University of Cambridge MPhil Philosophy

University of Victoria BA (Hons.) Philosophy

St. Michaels University School

Investors who invest with Stewart Butterfield

Scouts & Angels Affiliated With Stewart Butterfield