About Landon Nattrass
Landon Nattrass is co-founder and chief executive officer of Faex Health. Faex Health makes a mobile app that analyzes stool images with AI to give users digestive health insights. Nattrass is responsible for strategy, partnerships, fundraising and commercialization.
He founded the company while studying finance and entrepreneurship at the University of Colorado Boulder. Faex was founded there in May 2024 with co-founder Ryan Ninness. In a July 2025 release, Nattrass said Faex was not claiming clinical diagnostic capability.
Experience
This experience comes from official bios and from SEC filings. For roles taken from filings, the years are when the filings name Landon Nattrass in the role, so the role may have started earlier or lasted longer.
Key Colleagues at Startups
The people Landon Nattrass works with at each company, as listed on that company's latest Form D.

