Stewart John Hen

Neurogen Corp. operated as a drug discovery and development company. The company was headquartered in Branford, CT.

Warburg Pincus LLC (Warburg Pincus) is a private equity subsidiary of Warburg Pincus & Company US LLC founded in 1966. The firm is headquartered in New York.

Allos Therapeutics, Inc. is a biopharmaceutical company committed to the development and commercialization of innovative anti-cancer therapeutics. It focuses on the development and commercialization FOLOTYN a pralatrexate injection. FOLOTYN is a folate analogue metabolic inhibitor designed to accumulate preferentially in cancer cells. It targets the inhibition of dihydrofolate reductase, or DHFR, an enzyme critical in the folate pathway, thereby interfering with DNA and RNA synthesis and triggering cancer cell death. Allos Therapeutics is also developing FOLOTYN in other hematologic malignancies and solid tumors. The company was founded on September 1, 1992 and is headquartered in Westminster, CO.

Prestwick Pharmaceuticals, Inc. develops drugs for diseases related to the central nervous system. Its drugs are used in curing diseases such as Huntington's, Parkinson's, restless legs syndrome, schizophrenia, autism, Alzheimer's, and sleep apnea diseases. The company was founded in 2002 and is headquartered in Washington DC.

Wuxi PharmaTech (Cayman), Inc. engages in the provision of research and development outsourcing services for the pharmaceutical, biotechnology and medical device industries. It operates through the laboratory services and manufacturing services segments. The laboratory services segment offers pharmaceutical and biotech services including discovery and medicinal chemistry, discovery biology, safety pharmacology, bioanalytical services, process research, formulation and toxicology laboratory services, as well as testing services for biologics, medical devices and combination products. The manufacturing services segment involves the production of intermediates and active pharmaceutical ingredients for or preclinical and clinical trials of small-molecule and commercial products; and biologics. The company was founded by Ge Li, Xiao Zhong Liu, Zhao Hui Zhang and Ning Zhao in 2000 and is headquartered in Shanghai, China.

Altus Pharmaceuticals, Inc. develops therapeutic products for gastrointestinal and metabolic diseases. Its principal activity is protein crystallization which is used to develop therapeutic products for gastrointestinal and metabolic diseases. The company was founded in October 1992 and is headquartered in Waltham, MA.

Melinta Subsidiary Corp. develops and markets pharmaceutical products for the treatment of life-threatening infections. It also develops novel classes of antibiotics to treat the multi- and extremely-drug-resistant pathogens for which there are few to no options, known collectively as ESKAPE pathogens. The company was founded by John N. Abelson, Harry F. Noller, Susan Froshauer, Harry H. Penner, Jr., William L. Jorgensen, Thomas A. Steitz, and Peter Moore in October 2000 and is headquartered in New Haven, CT.