Great Western Bancorp Inc. President and COO Douglas Bass and Executive Vice President and Chief Credit Officer Michael Gough have transitioned out of their respective roles, according to a Form 8-K.

Bass continues as COO of the Sioux Falls, S.D.-based company and will focus on loan, deposit and wealth management growth. The role of president will be assumed by Kenneth Karels, the company's chairman and CEO.

Gough will continue as interim chief credit officer and executive vice president until a successor chief credit officer is appointed. He will help in the transition and thereafter remain employed as a nonexecutive employee of Great Western Bancorp as a senior vice president for credit.