Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 156B, § 77

(a) alters or abolishes any preferential right of his stock having preferences;

(b) creates, alters or abolishes any right in respect of redemption of his stock;

(c) alters or abolishes any preemptive right in respect of his stock;

(d) creates or alters (other than to abolish) any restriction on transfer applicable to his stock; or

(e) excludes or limits his right as a stockholder to vote on a matter except as such right may be limited by voting rights given to new shares then being authorized of an existing or new class.