| Relationships | Role | Relationship Start | Relationship End |
| Oklahoma State Bancorporation, Inc. | Parent | 12/31/1979 | 11/5/1999 |
| Oklahoma State Bancorporation, Inc. | Parent | 12/31/1976 | 12/30/1979 |
| Tommie Maines, C. C. Collier, J. M. Carter | Parent | 12/31/1970 | 2/10/1972 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| First United Bank And Trust Company | Buyer | 3,372,683 | Pooling of Interests | Discontinued | 11/6/1999 |