| Relationships | Role | Relationship Start | Relationship End |
| First Sooner Bancshares, Inc. | Parent | 3/18/1987 | 3/3/2000 |
| United Bank Advisory Services, Inc. | Subsidary | 6/30/1987 | 8/17/1989 |
| United Check Processing Center, Inc. | Subsidary | 8/5/1987 | 3/31/1988 |
| United Data Services, Inc. | Subsidary | 8/5/1987 | 3/31/1988 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Umb Bank, National Association | Buyer | 4,078,562 | Pooling of Interests | Discontinued | 3/4/2000 |
| Century Bank, National Association | Seller | 18,931 | Discontinued | 6/1/1989 | |
| United Oklahoma Bank | Seller | 171,925 | Failure | 3/18/1987 |