| Relationships | Role | Relationship Start | Relationship End |
| Mercantile Commerce Company | Parent | 12/31/1970 | 3/12/1986 |
| Boulevard Redevelopment Company | Subsidary | 12/31/1976 | 3/12/1986 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Mercantile Bank Of St. Louis National Association | Buyer | 7,244,093 | Discontinued | 3/13/1986 |