employee-owned
(5)Bob McCollum
Bob McCollum is the long-serving CEO and driving force behind R.S. Hughes Co., Inc., an employee-owned industrial distributor headquartered in Sunnyvale, California that has grown into a $527 million enterprise spanning North America. A University of Michigan alumnus and former college quarterback, McCollum spent decades building RS Hughes into one of North America's top 50 industrial distributors, known for its culture of integrity and genuine care for employees. He has been recognized for significant philanthropic contributions to the University of Michigan athletics program, endowing the quarterbacks coaching position with a $2 million gift in 2022.
Chris Wolf
Chris Wolf is the Chief Executive Officer of Walters & Wolf, one of the leading glass and glazing contractors in North America. Based in Fremont, California, he leads a 650-person employee-owned company that designs, engineers, fabricates, and installs architectural glazing, curtain wall systems, and door openings for clients including Google, Apple, Adobe, and Kaiser. Wolf rose through the company over 15 years as Vice President before taking the helm as CEO around 2022. Under his and prior leadership, Walters & Wolf has become widely recognized for its deep commitment to lean manufacturing and the Toyota Production System, maintaining a library of over 6,000 improvement videos and earning recognition from lean manufacturing expert Paul Akers as 'the best lean company I know.'
Greg Cosko
Greg Cosko is the Executive Chairman (and longtime President & CEO) of Hathaway Dinwiddie Construction Company, one of California's oldest builders. He led the Getty Center build, engineered the 1996 management buyout and merger that formed Hathaway Dinwiddie, and spent nearly three decades steering a 510-person, employee-oriented firm with roughly $300M in annual revenue.
Kevin O'Riordan
Kevin O'Riordan is President and CEO of Hathaway Dinwiddie Construction Company, the 117-year-old, employee-owned San Francisco general contractor behind a generation of California's most photographed buildings. He took the top job on April 1, 2025 after four decades in the trade and five years running the Northern California region. In the same window he was elected 2025 President of the Construction Employers' Association.
Paul Gutierrez
Paul Gutierrez is President and Chief Executive Officer of California Drywall Co., the San Jose-based specialty contractor that ranks among the largest wall-and-ceiling firms in the United States. In August 2023, he led the company's transition from third-generation family ownership to a 100% employee stock ownership plan, a structural rewrite of a 77-year-old business with roughly 700 employees.