(a) Unless an exemption under § 3-603(c), (d), or (e) of this subtitle applies, a corporation may not engage in any business combination with any interested stockholder or any affiliate of the interested stockholder for a period of 5 years following the most recent date on which the interested stockholder became an interested stockholder.

(b) Unless an exemption under § 3-603 of this subtitle applies, in addition to any vote otherwise required by law or the charter of the corporation, a business combination that is not prohibited by subsection (a) of this section shall be recommended by the board of directors and approved by the affirmative vote of at least:

(1) 80 percent of the votes entitled to be cast by outstanding shares of voting stock of the corporation, voting together as a single voting group; and

(2) Two-thirds of the votes entitled to be cast by holders of voting stock other than voting stock held by the interested stockholder who will (or whose affiliate will) be a party to the business combination or by an affiliate or associate of the interested stockholder, voting together as a single voting group.