Tetraphase Pharmaceuticals, Inc. announced the appointment of Kamalam (Kam) Unninayar as Chief Financial Officer. Kam joins Tetraphase with a track record of over two decades of financial leadership in the life sciences and consumer goods industries. Most recently, Kam spent over 11 years overseeing finance organizations at Thermo Fisher Scientific. During her tenure there, Kam led finance for the customer channels group, the chemical analysis division, and businesses with revenues that ranged from $200 million to $4 billion.