A year after an abrupt management change began a firmwide restructuring, three practice group leaders have recently left Dorsey & Whitney for positions elsewhere.

The first of the trio to announce his departure was Zachary Carter, a former U.S. Attorney for the Eastern District of New York and current cochair of Dorsey’s white-collar crime and civil fraud practice who will leave the firm at month’s end to become New York City’s new corporation counsel under Mayor Bill de Blasio.