Haw. Rev. Stat. § 414-352: Notice of intent to demand payment.

(a) If proposed corporate action creating dissenters' rights under section 414-342 is submitted to a vote at a shareholders' meeting, a shareholder who wishes to assert dissenters' rights:

(1) Must deliver to the corporation before the vote is taken written notice of the shareholder's intent to demand payment for the shareholder's shares if the proposed action is effectuated; and

(2) Must not vote the shareholder's shares in favor of the proposed action.

(b) A shareholder who does not satisfy the requirements of subsection (a) is not entitled to payment for the shareholder's shares under this part.