| Event Date | Historical Event |
| 1984-09-04 | BANKMONT FINANCIAL CORP. located at NEW YORK, NY was established as a Bank Holding Company. |
| 1984-11-29 | BANKMONT FINANCIAL CORP. moved to 430 PARK AVENUE NEW YORK, NY. |
| 1999-10-31 | BANKMONT FINANCIAL CORP. moved to 1209 ORANGE STREET WILMINGTON, DE. |
| 2000-04-10 | BANKMONT FINANCIAL CORP. changed from Bank Holding Company to Financial Holding Company - Domestic. |
| 2004-01-15 | BANKMONT FINANCIAL CORP. was renamed to HARRIS FINANCIAL CORP.. |
| 2011-07-06 | HARRIS FINANCIAL CORP. was renamed to BMO FINANCIAL CORP.. |