Robert W. Zack

Frontier Technology LLC provides technology solutions and infrastructure services. The firm offers data center, virtualization, networking, storage, security, mobility, telecom and software solutions. It provides services to health care, financial, legal, education, retail, construction and manufacturing industries. The company was founded by Jeff McKeever in 1976 and is headquartered in Naperville, IL.

Renegy Holdings, Inc. is a renewable energy company engaged in biomass power generation utilizing wood waste as a primary fuel source. The company's business activities include an established fuel aggregation and wood products business, which collects and transports forest thinning and woody waste biomass fuel to the company's power plants, and which sells logs, lumber, shaved wood products and other high value wood by-products to help reduce the cost of fuel for its primary business operations. It provides product development, developing renewable energy products for others. The company was founded on May 1, 2007 and is headquartered in Mesa, AZ.

Catalytica Energy Systems, Inc. provides innovative products and services to meet the rapidly growing demand for emissions control solutions in the power generation and transportation industries. The company offers variety of services for coal-fired power plants using selective catalytic reduction (SCR) systems to reduce nitrogen oxides (NOx) emissions. The business activities include the design, development and manufacture of advanced products based on its proprietary catalyst and fuel processing technologies to offer cost-effective solutions for reducing NOx emissions from diesel engines and natural gas-fired turbines. The company is located in Gilbert, AZ.

Adreima LLC provides receivables, denials management, and eligibility services to the hospitals. It offers niche delivery expertise with a full revenue cycle management perspective. The company was founded in 1990 and is headquartered in Downers Grove, IL.