John W. Matthei

Pfingsten Partners LLC (Pfingsten Partners) is a private equity firm founded in 1989 by Thomas Steven Bagley. The firm is headquartered in Chicago, Illinois.

Athenex, Inc. is a biopharmaceutical company, which engages in the discovery, development, and commercialization of novel therapies for the treatment of cancer. It operates through the Oncology Innovation Platform and Commercial Platform segments. The Oncology Innovation Platform segment focuses on the research and development of proprietary drugs. The Commercial Platform segment covers the sale and market of specialty drugs and market development of proprietary drugs. The company was founded by Lyn M. Dyster and David G. Hangauer in November 2003 and is headquartered in Buffalo, NY.

Sagent Pharmaceuticals, Inc. engages in the developing, manufacturing, and marketing of medical products. It offers injectable products such as amikacin sulfate, ampicillin and sulbactam, cefazolin, piperacillin and tazobactam, and vancomycin hydrochloride. The company was founded by Jeffrey M. Yordon in 2006 and is headquartered in Schaumburg, IL.