| Relationships | Role | Relationship Start | Relationship End |
| Comerica Texas Incorporated | Parent | 5/29/1993 | 9/3/1993 |
| Northpark National Corporation | Parent | 12/11/1980 | 5/28/1993 |
| Interfirst Securities Co In Dallas | Parent | 7/8/1965 | 5/29/1973 |
| Interfirst Securities Co In Dallas | Parent | 5/28/1965 | 7/7/1965 |
| P & Sa Corporation | Subsidary | 2/1/1990 | 9/3/1993 |
| North Dallas Realty Corporation | Subsidary | 4/2/1990 | 9/3/1993 |
| Northpark Securities, Inc. | Subsidary | 3/15/1990 | 9/3/1993 |
| Park Properties, Inc. | Subsidary | 10/4/1990 | 9/3/1993 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Comerica Bank - Texas | Buyer | 4,562,763 | Discontinued | 9/4/1993 |