| Relationships | Role | Relationship Start | Relationship End |
| Mark Twain Bancshares, Inc. | Parent | 12/31/1980 | 2/28/1986 |
| Mark Twain Bancshares, Inc. | Parent | 12/31/1970 | 12/30/1980 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Mark Twain Bank | Buyer | 2,182,610 | Discontinued | 3/1/1986 |