| Relationships | Role | Relationship Start | Relationship End |
| Pinnacle Bancorp, Inc. | Parent | 7/2/1993 | 10/20/2000 |
| Pinnacle Bancorp, Inc. | Parent | 1/6/1992 | 7/1/1993 |
| Pinnacle Bancorp, Inc. | Parent | 9/29/1981 | 1/5/1992 |
| Western Banks Of Wyoming, Inc. | Parent | 4/1/1978 | 2/2/1981 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Pinnacle Bank - Wyoming | Buyer | 722,853 | Pooling of Interests | Discontinued | 10/21/2000 |
| National Bank Of Newcastle | Seller | 21,343 | Discontinued | 4/10/1991 |