After approval, articles of merger, articles of consolidation, or articles of exchange shall be executed by each corporation by its president or a vice-president and by its secretary or an assistant secretary, and must set out the (1) plan of merger, consolidation, or exchange;
(2) number of shares outstanding of each corporation and, if the shares of a class were entitled to vote as a class, the designation and number of outstanding shares of the class; and
(3) number of shares voted for and against the plan and, if the shares of a class were entitled to vote as a class, the number of shares of the class voted for and against the plan.