ELLEN M. COSTELLO

Corporate Board Profile

Tech Score: 0/100

CITIGROUP INC

Filing Date	Source Excerpt
2025-03-18	Ms. Costello is an accomplished financial services executive and through her prominent roles in the areas of Financial Services, Risk Management, Financial Reporting, Operations and Technology, and Regulatory and Compliance has been nominated to serve on the Board. Because Citi is an international financial services company, having former banking executives with extensive banking experience, like Ms. Costello, as Board members enables the Board to provide knowledgeable oversight to its business and regulatory activities. In her 30 years at BMO Financial Group, a global financial institution, Ms. Costello acquired extensive experience in personal and commercial banking, wealth management, and capital markets businesses in Canada, Asia, and the U.S. In her roles in Global Treasury and Global Capital Markets, she gained experience in corporate, institutional, and investment banking, securities, trading, and asset management. As CEO of BMO Harris Bank N.A., Ms. Costello gained experience in personal and commercial banking, strategic planning, marketing, regulatory compliance, financial reporting, and personnel matters. Additionally, as CEO of BMO Financial Corporation and U.S. Country Head of BMO Financial Group, she gained further experience in regulatory compliance, including capital and resolution planning, risk management, and governance. Her prior board service at DH Corporation and Diebold Nixdorf provide her with experience in global operations and financial technologies businesses. Ms. Costello’s extensive financial services background also adds significant value to Citi’s and Citibank’s relationships with various regulators and stakeholders.

Filing Date

Source Excerpt

2025-03-18

Ms. Costello is an accomplished financial services executive and through her prominent roles in the areas of Financial Services, Risk Management, Financial Reporting, Operations and Technology, and Regulatory and Compliance has been nominated to serve on the Board. Because Citi is an international financial services company, having former banking executives with extensive banking experience, like Ms. Costello, as Board members enables the Board to provide knowledgeable oversight to its business and regulatory activities. In her 30 years at BMO Financial Group, a global financial institution, Ms. Costello acquired extensive experience in personal and commercial banking, wealth management, and capital markets businesses in Canada, Asia, and the U.S. In her roles in Global Treasury and Global Capital Markets, she gained experience in corporate, institutional, and investment banking, securities, trading, and asset management. As CEO of BMO Harris Bank N.A., Ms. Costello gained experience in personal and commercial banking, strategic planning, marketing, regulatory compliance, financial reporting, and personnel matters. Additionally, as CEO of BMO Financial Corporation and U.S. Country Head of BMO Financial Group, she gained further experience in regulatory compliance, including capital and resolution planning, risk management, and governance. Her prior board service at DH Corporation and Diebold Nixdorf provide her with experience in global operations and financial technologies businesses. Ms. Costello’s extensive financial services background also adds significant value to Citi’s and Citibank’s relationships with various regulators and stakeholders.

DIEBOLD NIXDORF, Inc

Filing Date	Source Excerpt
2019-03-15	Ms. Costello retired in July 2013 as Chief Executive Officer of BMO Financial Corporation... Ms. Costello's broad experience as chief executive officer and director in the financial services and financial technologies industries provides our Board with experience relevant to many key aspects of our business. Her extensive financial background and prior committee experience bring valuable insight to our Audit and Finance Committees.
2021-03-19	Ms. Costello retired in July 2013 as Chief Executive Officer of BMO Financial Corporation... Ms. Costello's broad experience as chief executive officer and director in the financial services and financial technologies industries provides our Board with experience relevant to many key aspects of our business. In addition, her extensive financial background and prior committee experience bring valuable insight as Chair of our People and Compensation Committee and a member of our Audit Committee.
2022-03-24	Ms. Costello retired in July 2013 as Chief Executive Officer of BMO Financial Corporation... Ms. Costello's broad experience as chief executive officer and director in the financial services and financial technologies industries provides our Board with experience relevant to many key aspects of our business. In addition, her extensive financial background and prior committee experience bring valuable insight as Chair of our People and Compensation Committee and a member of our Audit Committee.

Data sourced from SEC filings. Last updated: 2025-12-06