Mont. Code Ann. § 35-17-502

Before an association may merge or consolidate with any other association, a written plan of merger or consolidation shall be prepared by the board of directors of one or both associations, by a committee appointed for that purpose by the board of directors of one or both associations, or by a committee composed of at least 10% of the stockholders of one of the associations concerned. Such plan shall set forth all the terms of the merger or consolidation and the proposed effect thereof on each of the stockholders of the associations concerned. In the case of consolidation, the plan shall also contain a copy of the proposed articles for the new association to be formed.