Mo. Rev. Stat. § 356.161: Rights and obligations of unqualified persons acquiring shares by foreclosure.

If any shares of stock in a professional corporation are acquired by any person who is a disqualified person in foreclosure of a pledge or otherwise, the then owner of the shares shall hold them subject to the same rights and obligations and the professional corporation shall be subject to the same rights and obligations under sections 356.011 to 356.261 as if the then owner of the shares had become a disqualified person.