| Relationships | Role | Relationship Start | Relationship End |
| Bancfirst Corporation | Parent | 5/1/1998 | 8/20/1998 |
| Lawton Security Bancshares, Incorporated | Parent | 8/20/1984 | 4/30/1998 |
| Lawton Security Bancshares, Incorporated | Parent | 3/2/1984 | 8/19/1984 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Bancfirst | Buyer | 6,769,841 | Pooling of Interests | Discontinued | 8/21/1998 |