| Relationships | Role | Relationship Start | Relationship End |
| Pinnacle Bancorp, Inc. | Parent | 9/24/1999 | 11/12/1999 |
| Central Grain Incorporated | Parent | 1/25/1999 | 11/12/1999 |
| Pinnacle Bancorp, Inc. | Parent | 2/3/1995 | 9/23/1999 |
| Central Grain Incorporated | Parent | 1/12/1999 | 1/24/1999 |
| Central Grain Incorporated | Parent | 12/28/1998 | 1/11/1999 |
| Central Grain Incorporated | Parent | 4/1/1989 | 12/27/1998 |
| Pinnacle Bancorp, Inc. | Parent | 12/31/1970 | 2/2/1995 |
| Central Grain Incorporated | Parent | 12/31/1983 | 3/31/1989 |
| Central Grain Incorporated | Parent | 12/31/1970 | 12/30/1983 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Pinnacle Bank | Buyer | 4,363,203 | Pooling of Interests | Discontinued | 11/13/1999 |