Nebraska Revised Statute 21-277
Chapter 21 Section 277
(MBCA 7.42) (a) No shareholder may commence a derivative proceeding until:
(1) A written demand has been made upon the corporation to take suitable action; and
(2) Ninety days have expired from the date delivery of the demand was made unless the shareholder has earlier been notified that the demand has been rejected by the corporation or unless irreparable injury to the corporation would result by waiting for the expiration of the ninety-day period.
(b) Venue for a proceeding under this section lies in the district court of the county where the corporation's principal office, or, if none in this state, its registered office, is located.