Financial group MUFG Americas Holdings Corp. and its subsidiary MUFG Union Bank appointed Brian Gunn as chief risk officer, effective Sept. 13.

Gunn succeeds Donna Dellosso, who announced her decision to retire in May. He joins MUFG from consulting firm Oliver Wyman, where he was a senior advisor to institutional clients in the banking industry.

Gunn will serve on MUFG’s executive committee for the Americas as a policy making officer. He will be based in New York and report to President and CEO Kevin Cronin. He will also have matrix reporting to Masahiro Kuwahara, MUFG group chief risk officer.

In his new role, Gunn will be responsible for providing strategic direction for risk management for the Americas, including enterprise-wide risk, credit, compliance, and business security for MUFG’s operations in the United States, Latin America, and Canada.

Gunn brings more than 25 years’ experience in risk management at large financial institutions, including chief risk officer positions at Santander Holdings USA; Ally Financial; and GE Money Canada, a subsidiary of GE Capital.