Ellen M. Costello

Retired Chief Executive Officer of BMO Financial Corporation
Ellen M. Costello, a veteran leader with more than 30 years of experience in the financial industry, currently serves as an independent director on the board of Citigroup, Inc. In her most recent executive position, she served as the Chief Executive Officer of BMO Financial Corporation and U.S. Country Head of BMO Financial Group from 2011 until 2013. Prior to this, she was Group Head of Personal and Commercial Banking for the U.S. and the Chief Executive Officer of BMO Harris Bank N.A. and BMO Financial Corporation. During her career, Ms. Costello has held a wide range of senior leadership positions across global retail, commercial and corporate banking and capital markets. She was elected to Diebold Nixdorf’s board of directors, in 2018, and serves on the board’s audit and finance committees.

Ms. Costello holds a bachelor degree from St. Francis Xavier University in Antigonish, Nova Scotia and a MBA from Dalhousie University in Halifax, Nova Scotia.
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