Dr. Thomas Grogan, above, and local businessman Ross Humphrey founded Ventana Medical Systems in 1985 while Grogan was a pathologist at the UA.
Swiss drug giant Roche Group paid $3.4 billion to acquire Oro Valley-based Ventana Medical Systems in 2008.
Roche opted to keep Ventana headquartered in Oro Valley.
Dr. Thomas Grogan and local businessman Ross Humphrey founded Ventana in 1985 while Grogan was a pathologist at the University of Arizona. The company is one of the nation's largest suppliers of automated diagnostic systems and medical technology equipment and testing reagents.
Contact reporter Cathalena E. Burch at cburch@tucson.com or 573-4642. On Twitter @Starburch
Cathalena E. Burch
Reporter
