In addition to providing advisory services, Mr. Holstein also sits on the Board of Directors of industry leading companies including:


24 Hour Fitness is the world's largest (by memberships) privately owned and operated fitness center chain. Headquartered in San Ramon, Calif., 24 Hour Fitness is a leading health club industry pioneer, serving nearly four million members in more than 400 clubs across the U.S. Since the beginning, the company has been dedicated to helping members change their lives and reach their individual fitness goals.
Mr. Holstein serves as Rightpoint's Chairman of the Board. Rightpoint is a leading digital agency and technology consultancy, headquartered in Chicago with additional offices in Detroit and Denver. Rightpoint’s breadth of services include digital strategy, mobile, social, cloud, CRM and application development
Brand Networks is the leading provider of data-driven marketing solutions, helping marketers maximize their return on social media investment. Headquartered in Boston, Brand Networks integrates organic content publishing with paid media optimization across Facebook, LinkedIn and Twitter.
Shoes for Crews® has been the trusted leader in safety footwear to foodservice, hospitality, healthcare and industrial employees for over 30 years. Based in West Palm Beach, Florida Shoes for Crews is the global leader in slip-resistant footwear with distribution centers in the United States, Canada and Ireland, they protect over 100,000 workplaces worldwide.