C-suite

The changes affected Dean Athanasia, Thong Nguyen, Katy Knox and Andy Sieg. The company also gave more responsibility to Chief Administrative Officer Andrea Smith.

Norman Mann II, who has worked for the institution for more than a decade, will take over as president and CEO for Danny Gregg, who is retiring.

Robert Rubino will join the New York company in February as president of CIT Bank and head of commercial banking.

He will take over as CEO from Carlos Torres Vila, who becomes chairman at year-end. Still unknown: who will run the company's U.S. bank once Genç moves up.

Michael Daly's resignation may have been precipitated by an anonymous letter last month describing the workplace as “toxic” and in dire need of change.

Stephen Gordon, who led the bank's recapitalization in 2010, is being replaced as CEO on an interim basis by former FirstMerit CEO Paul Grieg.

Michael Daly had been the Boston company's president and CEO since 2002. It did not say why he left.

Mike Walrod will lead CU Holding, a subsidiary of Mazuma Credit Union that oversees several credit union service organizations.

Tom Walker will retire at the end of next year. The company is currently considering two internal candidates to take over.

The online-only bank hopes new leadership can help it overcome its rocky past three years.