| Relationships | Role | Relationship Start | Relationship End |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Mercantile Bank Of St. Louis National Association | Buyer | 7,244,093 | Failure | 7/27/1991 | |
| Mercantile Bank Of Illinois | Buyer | 640,775 | Failure | 7/27/1991 | |
| Washington 1St Federal Savings And Loan Association Of Gr St Louis | Seller | 57,463 | Discontinued | 4/30/1986 |