| Relationships | Role | Relationship Start | Relationship End |
| Southeastern Oklahoma Bancorporation, Inc. | Parent | 4/2/1982 | 8/11/1997 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| First Texoma National Bank | Buyer | 169,748 | Acquisition | Discontinued | 8/12/1997 |