| Relationships | Role | Relationship Start | Relationship End |
| Mercantile Bank Of St. Louis National Association | Parent | 6/21/1997 | 6/30/1999 |
| Mark Twain Bank | Parent | 6/1/1987 | 6/20/1997 |
| Mark Twain Bancshares, Inc. | Parent | 1/1/1984 | 5/31/1987 |
| Relationships | Role | Relationship Start | Relationship End |
| Mercantile Bank Of St. Louis National Association | Parent | 6/21/1997 | 6/30/1999 |
| Mark Twain Bank | Parent | 6/1/1987 | 6/20/1997 |
| Mark Twain Bancshares, Inc. | Parent | 1/1/1984 | 5/31/1987 |