| Relationships | Role | Relationship Start | Relationship End |
| Bank One, Texas, National Association | Parent | 1/1/1990 | 12/30/1994 |
| Mbank Dallas, National Association | Parent | 9/1/1980 | 3/28/1989 |
| Mbank Energy Management, Inc. | Subsidary | 1/1/1990 | 12/30/1994 |
| Oregon Louisiana, Inc. | Subsidary | 1/1/1990 | 12/30/1994 |
| Oregon Rat I, Inc. | Subsidary | 1/1/1990 | 12/30/1994 |
| Oregon Rat Ii, Inc. | Subsidary | 1/1/1990 | 12/30/1994 |
| Oregon Rat Iii, Inc. | Subsidary | 1/1/1990 | 12/30/1994 |
| Oregon Texas One, Inc. | Subsidary | 1/1/1990 | 12/30/1994 |