Section 450.1621 - Dissent of shareholder to amendment; payment to dissenting shareholder(1) A holder of adversely affected shares who does not vote for or consent in writing to a proposed amendment may dissent, pursuant to section 762, and receive payment for the shares, if the amendment does either of the following: (a) Materially alters or abolishes a preferential right of the shares having preferences.(b) Creates, alters, or abolishes a material provision or right in respect of the redemption of the shares or a sinking fund for the redemption or purchase of the shares.(2) A dissenting shareholder shall not receive payment in excess of the sum payable upon redemption of the shares or liquidation of the corporation, whichever is less.1972, Act 284, eff. 1/1/1973 ;--Am. 1989, Act 121, eff. 10/1/1989 .