GROTON —  Michael Ballirano, branch manager of the Montville and Niantic branches of Charter Oak Federal Credit Union, has been named the new chairman of the Montville Division of the Chamber of Commerce of Eastern Connecticut.

Ballirano, who has been with Charter Oak since 2011, is an active member of the regional chamber and is a member of its Leadership Program Class of 2015. He is also active with the Montville

Rotary organization and the Thames Network BNI chapter, which meets weekly in New London.

“I congratulate Michael on stepping up to lead the Montville Division of the chamber,” said Brian

A. Orenstein, Charter Oak’s CEO. “We encourage all of our employees to be active in their local communities and business organizations, and Michael has done a great job getting involved since joining Charter Oak,” said Orenstein.

Charter Oak has 13 branches in New London and Windham counties, including branches in Putnam and Dayville, and assets of $789 million as of Dec. 31, 2013. This year, Charter Oak is celebrating its 75th year in  business.