Mo. Rev. Stat. § 354.220: Director may bring suit to recover fees or sums.

1. The director may bring suit to recover any fees or other sums which he is authorized by law to demand or collect.

2. Any corporation subject to the provisions of sections 354.010 to 354.380 or person liable for any fees or assessments who shall neglect or refuse to pay the same within ten days after written demand by the director shall be liable to pay double the amount of such fees or assessments; and any judgment recovered in such case shall be for double such amount and costs.