CHATTANOOGA, Tenn.--(BUSINESS WIRE)--Unum Group (NYSE:UNM) announced today that Francis J. Shammo, executive vice president and chief financial officer of Verizon Communications, Inc., has been elected to serve as a director of the company. At Verizon, Shammo is responsible for the company’s finance and strategic planning operations, and financial transaction services. Prior to his current role, he served as president and chief executive officer for Verizon Telecom and Business; senior vice pre