| Relationships | Role | Relationship Start | Relationship End |
| Commercial Banshares, Inc. | Parent | 12/31/1981 | 11/5/1999 |
| Commercial Banshares, Inc. | Parent | 12/31/1978 | 12/30/1981 |
| Commercial Banshares, Inc. | Parent | 12/31/1970 | 12/30/1978 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| First National Bank South Dakota | Buyer | 381,766 | Pooling of Interests | Discontinued | 11/6/1999 |
| Sanborn County Bank | Seller | 16,709 | Discontinued | 7/1/1992 | |
| First Federal Savings Bank | Seller | 43,219 | Failure | 9/14/1991 |