805 ILCS 35/12

The articles of incorporation may be amended by a majority vote of the stockholders and members who will vote in accordance with Section 16 of this Act at any regular meeting or at a special meeting called for that purpose.

Articles of amendment signed by the president or vice president and attested by the secretary certifying to the amendment and its lawful adoption shall be executed, acknowledged and filed with the Director and, when approved by the Director, recorded with a certificate of the Director approving the articles of amendment, in the same manner as the original articles of incorporation. As soon as the Director issues his certificate of amendment the amendment is in effect.