Mo. Rev. Stat. § 362.080

The issuance and sale of its shares of preferred stock by any corporation to which sections 362.075 to 362.100 apply may be authorized at any annual meeting of its stockholders, or at any special meeting thereof called and held for that purpose. Notice of * the meeting shall be given as provided in section 362.044. The preferred shares so issued may be issued as part of the existing capital of the issuing corporation, or as an increase of its capital.