Mo. Rev. Stat. § 351.815: Annual meeting.

1. The annual meeting date for a statutory close corporation is the first business day after May thirty-first unless its articles of incorporation, bylaws, or a shareholder agreement authorized by section 351.800 fixes a different date.

2. A statutory close corporation need not hold an annual meeting unless one or more shareholders deliver written notice to the corporation requesting a meeting date determined under subsection 1 of this section.