| Relationships | Role | Relationship Start | Relationship End |
| Community Bancs Of Oklahoma, Inc. | Parent | 9/15/1993 | 8/24/2007 |
| Bokf, National Association | Parent | 2/9/1988 | 10/2/1989 |
| Community Bancshares Of Tulsa, Inc. | Parent | 10/1/1980 | 2/8/1988 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Central Bank Of Oklahoma | Buyer | 732,857 | Pooling of Interests | Charter Retained | 8/25/2007 |