. . . Exhibit 21 LIST OF SUBSIDIARIES Name of Subsidiary Jurisdiction of Organization ------------------ ---------------------------- The Exchange National Bank of Jefferson City United States (national banking association) Union State Bancshares, Inc. Missouri Mid Central Bancorp, Inc. Missouri ENB Holdings, Inc. Missouri Citizens Union State Bank and Trust of Clinton Missouri Osage Valley Bank of Warsaw Missouri Bank 10 of Belton Missouri Jefferson City IHC, LLC Missouri (limited liability company) Jefferson City Mortgage Co., LLC Missouri (limited liability company) Clinton IHC, LLC Missouri (limited liability company) Clinton Mortgage Company, LLC Missouri (limited liability company) Exchange National Statutory Trust I Connecticut Exchange National Statutory Trust II Delaware 1