Neb. Rev. Stat. § 21-1942

(a) Except as set forth in or authorized by the articles or bylaws, no member of a mutual benefit corporation may transfer a membership or any right arising therefrom. (b) No member of a public benefit or religious corporation may transfer a membership or any right arising therefrom. (c) When transfer rights have been provided, no restriction on them shall be binding with respect to a member holding a membership issued prior to the adoption of the restriction unless the restriction is approved by the members and the affected member.