Collins, interim CFO since April, joined the company in 2010 as vice president of global financial operations.
Zwick had been CFO since 2012. Controller Eric Carlson has been tapped interim principal financial officer and interim principal accounting officer. The company is searching for a permanent CFO.
Fitzpatrick remains executive vice president to help with the transition. The company is looking for a replacement.
Cabalquinto was vice president and CFO at Universal Studios Hollywood.
Hyatt is CFO, senior vice president and chief information officer at IHS, which acquired Polk in June.
Cooper was CFO of Westell Technologies. He is taking over at Federal Signal from the interim CFO.