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Wednesday, Jun 17, 2026

OC500 2025: RUBEN MENDOZA  

RUBEN MENDOZA  

FOUNDER/CEO  

FOUNDATION BUILDING MATERIALS  

 

WHY: Founder of one of the country’s largest distributors of wallboard, suspended ceiling systems in the country. Went public in 2017, raised about $180M, before 2020 sale to private equity firm American Securities LLC. Deal valued at $1.4B, including debt. Over 370 locations across the U.S. and Canada. 

IN THE NEWS: Lowe’s Companies Inc. completed its $8.8B acquisition of FBM in October.  

NOTABLE: Involved in several charities, including KidWorks and the Orange County Rescue Mission.  

QUOTABLE: “We started this business from scratch. It’s the hardest thing I’ve ever done. I was on my knees every day, just praying to make it.”   

 

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