| Relationships | Role | Relationship Start | Relationship End |
| Pinnacle Bancorp, Inc. | Parent | 7/31/1998 | 11/12/1999 |
| Pinnacle Bancorp, Inc. | Parent | 5/13/1997 | 7/30/1998 |
| Pinnacle Bancorp, Inc. | Parent | 1/6/1997 | 5/12/1997 |
| Pinnacle Bancorp, Inc. | Parent | 11/21/1995 | 1/5/1997 |
| Pinnacle Bancorp, Inc. | Parent | 12/31/1970 | 11/20/1995 |
| Archer Company, The | Parent | 12/31/1970 | 12/31/1980 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Pinnacle Bank | Buyer | 4,363,203 | Pooling of Interests | Discontinued | 11/13/1999 |