Sec. 9. (a) After the signing of the agreement of merger under section 8 of this chapter, articles of merger shall be executed and filed in the manner provided in this section, setting forth:
(1) the agreement of merger;
(2) the fact that the merger has been approved by the department;
(3) the signatures of the corporations that are parties to the agreement;
(4) the manner of its adoption; and
(5) the vote by which adopted by each of the corporations.
(b) The articles of merger shall be signed on behalf of each corporation by its president or a vice president and by its secretary or cashier and shall be acknowledged before a notary public. The articles of merger shall then be filed with the secretary of state.