Mass. Gen. Laws ch. 156B, § 82
(a)
(e) If all the stock of a subsidiary Massachusetts corporation party to a merger effected under this section is not owned by the parent corporation immediately prior to the merger, any stockholder in such subsidiary Massachusetts corporation (but no stockholder in a parent Massachusetts corporation) who objects to such merger may demand payment for his stock from the parent corporation and an appraisal thereof. Within ten days after the effective date of the merger the parent corporation shall send written notice by registered or certified mail to each stockholder of such subsidiary Massachusetts corporation at his last known address as it appears in the records of such subsidiary corporation, stating:
1. The date upon which such articles were filed and the effective date of the merger.
2. The terms and conditions of the merger.
3. The right of any stockholder of such subsidiary Massachusetts corporation who objects to the merger to demand in writing from the parent corporation within twenty days after the mailing of such notice payment for his stock and an appraisal thereof.
If any such stockholder shall demand in writing from the parent corporation within twenty days after the mailing of such notice payment for his stock and an appraisal thereof, such stockholder and the parent corporation shall thereafter have the rights and duties and follow the procedures set forth in sections eighty-nine to ninety-eight, inclusive.