Quintiles calls itself the world's largest contract research company helping large pharmaceutical companies test and sell drugs.
The company founded in 1982 by biostatistics professor Dennis Gillings became a public company in 1994. Gillings and others bought out stockholders to take Quintiles private again in 2003. It's now owned by Gillings; hedge funds Bain Capital Partners and TPG Global; and Singapore state investment company Temasek Holdings.
Quintiles said its revenues last year were $3.7 billion.