If no application for a certificate of authority is filed within six (6) months following the grant of a charter or any additional period allowed by the commissioner, or if a certificate of authority has been finally denied, or if the bank fails to commence business within six (6) months after the issuance of a certificate of authority or any additional period allowed by the commissioner, the charter shall be forfeited, and the bank shall be liquidated in accordance with the orders of the commissioner. If an improper expenditure has been made, the commissioner may order the persons who were incorporators or directors at the time to restore the sum by equal contributions.