Maryland Code, Corporations and Associations § 2-205

(a) For a corporation incorporated on or after October 1, 1995, unless the charter expressly grants such rights to the stockholder, a stockholder does not have any preemptive right to subscribe to:

(b) For a corporation incorporated before October 1, 1995, a stockholder shall have preemptive rights as and to the extent in existence before October 1, 1995, unless and until expressly changed or terminated by charter amendment.