Mo. Rev. Stat. § 105.478
105.478 Penalty.
105.478. Penalty. — Any person guilty of knowingly violating any of the provisions of sections 105.450 to 105.498 shall be punished as follows:
(1) For the first offense, such person is guilty of a class B misdemeanor;
(2) For the second and subsequent offenses, such person is guilty of a class E felony.
(L. 1978 H.B. 1610 § 14, A.L. 1990 H.B. 1650 & 1565, A.L. 1991 S.B. 262, A.L. 2014 S.B. 491) Effective 1-01-17