Mo. Rev. Stat. § 355.421: Loans, guarantees for directors, officers.

A corporation which qualifies for an exemption from federal income tax in accordance with U.S.C. 26 Sec. 501(c) may lend money to or guarantee the obligation of a director or officer of the corporation, provided that such loan does not exceed the lesser of twenty-five percent of the total assets of the corporation or two hundred and fifty thousand dollars.