Wyo. Stat. § 17-16-1105: Merger between parent and subsidiary or between subsidiaries.

(a) A domestic parent corporation that owns shares of a domestic or foreign subsidiary corporation that carry at least eighty percent (80%) of the voting power of each class and series of the outstanding shares of a subsidiary that have voting power may merge the subsidiary into itself or into another such subsidiary, or merge itself into the subsidiary, without approval of the board of directors or shareholders of the subsidiary, unless the articles of incorporation of any of the corporations otherwise provide, and unless, in the case of a foreign subsidiary, approval by the subsidiary's board of directors or shareholders is required by the laws under which the subsidiary is organized.

(b) If under subsection (a) of this section approval of a merger by the subsidiary's shareholders is not required, the parent corporation shall, within ten (10) days after the effective date of the merger, notify each of the subsidiary's shareholders that the merger has become effective.

(c) Except as provided in subsections (a) and (b) of this section, a merger between a parent and a subsidiary shall be governed by the provisions of this article applicable to mergers generally.