Senior Management

Gary Holloway Sr.

Gary Holloway Jr.

Robert DiGiuseppe

James Kirby

Stephen Behrle Jr.

David Forrest

Rand Ginsburg

Dusty Smith

Greg Martini

Holly McQueen

Justin Wybenga

Jennifer Casey

Business Support

Valerie Young

Anthony Cardamone

James Asali

Alexa McCardell

William Quinn

Valerie Young

Senior Vice President of Human Resources


Valerie Young serves as our Senior Vice President of Human Resources. Mrs. Young joined the company in 2011 as the Director of HR, and is responsible for all Human Resources activities across our companies, including recruitment, benefits administration, payroll, and employee relations. Prior to joining GMH, she spent 15+ years in human resources working for international manufacturing companies.


Mrs. Young received an MBA in Marketing from Temple University. She has been certified as a Human Resources Professional (PHR) since 2001, and a Senior Human Resources Professional (SPHR) since 2012.