| Event Date | Historical Event |
| 1969-01-17 | FIRST TENNESSEE NATIONAL CORPORATION located at MEMPHIS, TN was established as a Domestic Entity Other. |
| 1970-12-31 | FIRST TENNESSEE NATIONAL CORPORATION changed from Domestic Entity Other to Bank Holding Company. |
| 2000-03-13 | FIRST TENNESSEE NATIONAL CORPORATION changed from Bank Holding Company to Financial Holding Company - Domestic. |
| 2004-04-20 | FIRST TENNESSEE NATIONAL CORPORATION was renamed to FIRST HORIZON NATIONAL CORPORATION and moved to 165 MADISON AVENUE MEMPHIS, TN. |