| Relationships | Role | Relationship Start | Relationship End |
| Pinnacle Bancorp, Inc. | Parent | 7/2/1993 | 5/2/2000 |
| Heartland Bancorporation | Parent | 4/1/1991 | 7/1/1993 |
| Crete State Corporation | Parent | 11/1/1977 | 3/31/1991 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Pinnacle Bank | Buyer | 4,363,203 | Pooling of Interests | Discontinued | 5/3/2000 |