Cal Henderson - Angel Investor Profile

Location: San Francisco, CA

Co-founder and CTO of Slack. Angel investor in developer tools and infrastructure.

Investment Focus & Industries

  • developer-tools
  • saas
  • infrastructure
  • ai
Cal Henderson

Cal Henderson

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

Flexible Check Size

Preferred Stages
pre-seedseed

Background & Investment Thesis

Co-founder and CTO of Slack. Angel investor in developer tools and infrastructure.

Focus Industries

developer-toolssaasinfrastructureai

Notable Portfolio & Backed Deals

SlackFlickr
AI Outreach Insight94% Match Score

Active investor in developer-tools, saas, infrastructure, ai. Highly responsive to concise pitches with clear traction metrics.

Cal Henderson - Angel Investor Profile | OpenAngels