The $4 billion Ent Federal Credit Union in Colorado Springs, Colo., said its CEO for the past 18 years, Charles Emmer (pictured at left), plans to retire in October. Ent was a $1 billion, 151,700-member institution when Emmer joined in 1996.

Now, five mergers later, the credit union has added the Pueblo, Denver and Firestone markets and quadrupled in assets.

Current President Randy Bernstein will add CEO to his title, the 234,700-member Ent said in its announcement this week.

Bernstein, pictured below, joined Ent in 1997 as vice president of operations, then served as EVP and COO before becoming president in 2011.

“Randy's experience at Ent, industry knowledge and leadership skills make him the ideal choice to succeed Charles as CEO. He and Charles have worked together to lead Ent for nearly two decades, guiding the credit union through several economic downturns to deliver unprecedented growth in assets and membership. We expect this leadership transition to be a smooth one for both Ent's members and its employees,” said Tim Rickert, chairman of Ent's board of directors.