Wyo. Stat. § 17-29-902: Derivative action.

(a) A member may maintain a derivative action to enforce a right of a limited liability company if:

(i) The member first makes a demand on the other members in a member-managed limited liability company, or the managers of a manager-managed limited liability company, requesting that they cause the company to bring an action to enforce the right, and the managers or other members do not bring the action within a reasonable time; or

(ii) A demand under paragraph (i) of this subsection would be futile.