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© 2026 Startup Intros, Inc.San Francisco, CA · Made for Founders

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§ Founder & Investor Profile

Karl Mattson

ActiveFounder Investor

Updated:Apr 2, 2026

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Quick Facts

Role: Founder & Managing Director
Company: Squared Circle Ventures
Status: Active
Type: Founder, Investor

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Experience

Founder & Managing DirectorFounderCurrent

Squared Circle Ventures

Present - Present

Frequently Asked Questions

Who is Karl Mattson?

Karl Mattson is Founder & Managing Director at Squared Circle Ventures.

What companies has Karl Mattson founded?

Karl Mattson co-founded Squared Circle Ventures.