Trion Solutions is a Troy, Michigan-based Professional Employer Organization founded in 2012 by Bonner Upshaw III and David L. Stone, now among the 10 largest PEOs in the country and the largest minority-owned PEO. The company manages payroll, taxes, benefits administration, workers’ compensation, and regulatory compliance for more than 800 client businesses nationwide, with an additional office in Scottsdale, AZ.