(a) Unless otherwise provided in a plan of merger or share exchange or in the laws under which a foreign corporation or a domestic or foreign other entity that is a party to a merger or a share exchange is organized or by which it is governed, after the plan has been adopted and approved as required by this article, and at any time before the merger or share exchange has become effective, it may be abandoned by any party thereto without action by the party's shareholders or owners of interests, in accordance with any procedures set forth in the plan of merger or share exchange or, if no procedures are set forth in the plan, in the manner determined by the board of directors of a corporation, or the managers of an other entity, subject to any contractual rights of other parties to the merger or share exchange.

(b) If a merger or share exchange is abandoned under subsection (a) of this section after articles of merger or share exchange have been filed with the Secretary of State but before the merger or share exchange has become effective, a statement that the merger or share exchange has been abandoned in accordance with this section, executed on behalf of a party to the merger or share exchange by an officer or other duly authorized representative, is to be delivered to the Secretary of State for filing prior to the effective date of the merger or share exchange. Upon filing, the statement is to take effect and the merger or share exchange is to be deemed abandoned and may not become effective.