Wyo. Stat. § 17-16-741: Standing.

(a) A shareholder may not commence or maintain a derivative proceeding unless the shareholder:

(i) Was a shareholder of the corporation at the time of the act or omission complained of, or became a shareholder through transfer by operation of law from one who was a shareholder at the time; and

(ii) Fairly and adequately represents the interests of the corporation in enforcing the right of the corporation.