David T. della Penta

Fisher Scientific International, Inc. manufactured and distributed scientific equipment and instruments that included everything from Erlenmeyer flasks to video/microscope systems. The company also produced chemicals, clinical equipment, diagnostic kits, reagents and laboratory workstations. Fisher Scientific International was founded in 1902 and was headquartered in Hampton, NH.

Founded in 2004 by Mark Stephens, Challenger Capital Group Ltd. is an independent financial services institution offering advisory services and private equity investing. They are located in Chicago with an additional office in Dallas.

IRIS International, Inc. engages in the manufacture of surgical and medical instruments. Its products include in vitro diagnostic systems. The company was founded in 1979 and is headquartered in Brea, CA.

Challenger Capital Group Ltd. is an investment banking firm located in Dallas, Texas. The firm offers a full suite of investment banking products including M&A advisory, capital raising and restructuring services. Challenger Capital Group's advisory services are specifically focused on middle-market companies and include debt and equity capital raising, mezzanine and structured solutions, mergers and acquisitions and more.

Nalge Nunc International Corp. Designs, develops, and manufactures plastic products. It designs, develops, and manufactures plastic products for use in laboratory, packaging, environmental, biotechnology, and life science applications. The company was founded in 1995 and is headquartered in Rochester, NY.

YSI, Inc. manufactures and markets sensor technologies. It offers water quality sensors, instruments for monitoring surface, drinking, storm, ground, wastewater and aquaculture services. The firm also provides wetlands restoration, near-coastal monitoring, water resource planning and fish farming services. The company was founded in 1948 and is headquartered in Yellow Springs, OH.