Mo. Rev. Stat. § 376.050
The persons mentioned in section 376.010 shall be designated as "corporators", and such corporators, desiring to form a company for the purpose of transacting the business mentioned in said section, or any part of the same, shall file in the office of the director of the department of commerce and insurance a declaration signed by each of said corporators, setting forth the place of residence of each of them, and their intention to form a corporation for the purpose of transacting the business aforesaid, which declaration shall comprise a copy of the charter proposed to be adopted by them; and they shall publish once in each week, or oftener, for at least four weeks, in a newspaper of general circulation, published in the county where such corporation is proposed to be located, a notice of the filing of such declaration, together with a copy of the same.
§ 376.050, RSMo