Nebraska Revised Statute 21-2,177
Perfection of rights; right to withdraw.
(MBCA 13.23) (a) A shareholder who receives notice pursuant to section 21-2,176 and who wishes to exercise appraisal rights must sign and return the form sent by the corporation and, in the case of certificated shares, deposit the shareholder's certificates in accordance with the terms of the notice by the date referred to in the notice pursuant to subdivision (b)(2)(ii) of section 21-2,176. In addition, if applicable, the shareholder must certify on the form whether the beneficial owner of such shares acquired beneficial ownership of the shares before the date required to be set forth in the notice pursuant to subdivision (b)(1) of section 21-2,176. If a shareholder fails to make this certification, the corporation may elect to treat the shareholder's shares as after-acquired shares under section 21-2,179. Once a shareholder deposits that shareholder's certificates or, in the case of uncertificated shares, returns the signed forms, that shareholder loses all rights as a shareholder unless the shareholder withdraws pursuant to subsection (b) of this section.
(b) A shareholder who has complied with subsection (a) of this section may nevertheless decline to exercise appraisal rights and withdraw from the appraisal process by so notifying the corporation in writing by the date set forth in the appraisal notice pursuant to subdivision (b)(2)(v) of section 21-2,176. A shareholder who fails to so withdraw from the appraisal process may not thereafter withdraw without the corporation's written consent.
(c) A shareholder who does not sign and return the form and, in the case of certificated shares, deposit that shareholder's share certificates where required, each by the date set forth in the notice described in subsection (b) of section 21-2,176, shall not be entitled to payment under sections 21-2,171 to 21-2,183.