Mo. Rev. Stat. § 393.833: Principal office, change of, procedure.

A company may, upon authorization of a majority of the members at any regular or special meeting, change the location of its principal office by filing a certificate of change of principal office, executed and acknowledged in duplicate by its president or vice president under its seal attested by its secretary, in the office of the secretary of state. Such company shall also, within thirty days after the filing of such certificate of change of principal office, file certified copies of its articles of incorporation and all amendments thereto, if the same are not already on file.