Md. Code Ann., Corps. & Ass'ns § 2-215
(a) A stockholder or subscriber for stock of a corporation is not obligated to the corporation or its creditors with respect to the stock, except to the extent that:
(b) The following persons are not personally liable to the corporation or its creditors for the unpaid portion of the consideration due for stock:
(c) The liability imposed by this section may be enforced only by:
Added by Acts 1975, c. 311, § 2, eff. July 1, 1975.
Formerly Art. 23, § 31.