Stewart Butterfield - Angel Investor Profile

Location: San Francisco, CA

Co-founder of Slack and Flickr. Angel investor in collaboration and consumer tools.

Investment Focus & Industries

  • saas
  • consumer
  • collaboration
  • marketplace
  • media
SB

Stewart Butterfield

Verified: Jun 2026 (SMTP Validated)👑 Lead Investor
San Francisco, CA
𝕏 Twitter/Xin LinkedIn
Check Size Range

Flexible Check Size

Preferred Stages
seedseries-a

Background & Investment Thesis

Co-founder of Slack and Flickr. Angel investor in collaboration and consumer tools.

Focus Industries

saasconsumercollaborationmarketplacemedia

Notable Portfolio & Backed Deals

SlackFlickr
AI Outreach Insight94% Match Score

Active investor in saas, consumer, collaboration, marketplace, media. Highly responsive to concise pitches with clear traction metrics.