Mo. Rev. Stat. § 351.586: Registered office and agent of foreign corporation.

Each foreign corporation authorized to transact business in this state shall continuously maintain in this state:

(1) A registered office that may be the same as any of its places of business; and

(2) A registered agent, who may be:

(a) An individual who resides in this state and whose business office is identical with the registered office;

(b) A domestic corporation or not-for-profit domestic corporation whose business office is identical with the registered office; or

(c) A foreign corporation or foreign not-for-profit corporation authorized to transact business in this state whose business office is identical with the registered office.