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§ Founder & Investor Profile

Michael Grondahl

ActiveFounder Investor

Updated:Apr 2, 2026

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Quick Facts

Role: Founder
Company: Planet Fitness
Status: Active
Type: Founder, Investor

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Experience

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Frequently Asked Questions

Who is Michael Grondahl?

Michael Grondahl is Founder at Planet Fitness.

What companies has Michael Grondahl founded?

Michael Grondahl co-founded Planet Fitness.