| Event Date | Historical Event |
| 1973-05-31 | DETROITBANK CORPORATION located at DETROIT, MI was established as a Bank Holding Company. |
| 1982-07-01 | DETROITBANK CORPORATION was renamed to COMERICA INCORPORATED. |
| 1984-12-31 | COMERICA INCORPORATED moved to 211 WEST FORT STREET DETROIT, MI. |
| 1993-05-01 | COMERICA INCORPORATED moved to 500 WOODARD AVENUE DETROIT, MI. |
| 2000-12-19 | COMERICA INCORPORATED changed from Bank Holding Company to Financial Holding Company - Domestic. |
| 2007-09-04 | COMERICA INCORPORATED moved to 1717 MAIN STREET DALLAS, TX. |