Mass. Gen. Laws ch. 110D § 7
Unless otherwise expressly provided in an issuing public corporation's articles of organization or by-laws in effect at the time of a control share acquisition of shares of such corporation, if voting rights are authorized for shares acquired in such control share acquisition in accordance with the provisions of section 5 and, in such control share acquisition, the person making such control share acquisition has acquired beneficial ownership of shares that, when added to all other shares of such corporation beneficially owned by such person, entitle such person to vote, or direct the voting of, shares of such corporation having a majority or more of all voting power in the election of directors, each stockholder of record of such corporation, other than the person making such control share acquisition, who has not voted in favor of authorizing voting rights for the shares acquired in such control share acquisition may demand payment for his stock and an appraisal in accordance with the part 13 of chapter 156D, and such stockholder and such corporation shall have the rights and duties and follow the procedures set forth in that part as nearly as practicable. For purposes of said part 13, the corporate action shall be deemed to have become effective on the later of the date such voting rights are authorized or the date on which such control share acquisition is made. For purposes of this section, fair value shall be determined as of the date on which the stockholders authorize voting rights for the shares acquired in such control share acquisition, but in no event it shall be less than the highest price per share paid by the person who made such control share acquisition in such control share acquisition. For purposes of said sections eighty-six to ninety-eight, inclusive, the corporate action shall be deemed to have become effective on the later of the date such voting rights are authorized or the date on which such control share acquisition is made. For purposes of this section, fair value shall be determined as of the date on which the stockholders authorize voting rights for the shares acquired in such control share acquisition, but in no event it shall be less than the highest price per share paid by the person who made such control share acquisition in such control share acquisition.
Mass. Gen. Laws ch. 110D, § 7