| Relationships | Role | Relationship Start | Relationship End |
| Boatmen's Bancshares, Inc. | Parent | 3/20/1989 | 4/30/1989 |
| Firstsub, Inc. | Parent | 3/5/1981 | 3/19/1989 |
| Columbia Union Bancshares, Inc. | Parent | 12/31/1970 | 3/4/1981 |
| Goppert Services, Inc. | Subsidary | 3/31/1988 | 4/30/1989 |
| Montrose Savings Bank | Subsidary | 2/2/1979 | 3/5/1981 |
| State Bank Of Herndon, Kansas | Subsidary | 8/16/1976 | 7/17/1980 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Nationsbank, National Association (Mid-West) | Buyer | 10,112,721 | Discontinued | 5/1/1989 | |
| Gregory Banking Center | Seller | Discontinued | 3/31/1988 | ||
| Centerre Bank Northland National Association | Seller | 158,768 | Discontinued | 11/10/1986 | |
| Centerre Bank Of Independence National Association | Seller | 122,041 | Discontinued | 11/10/1986 | |
| First Union Trust Company In Kansas City | Seller | Discontinued | 11/20/1981 | ||
| Union National Bank In Kansas City | Seller | Discontinued | 9/15/1969 |