A reorganized stock association shall have the power to issue additional amounts of capital stock to the mutual holding company of which it is a subsidiary and, in addition, to other persons an amount of capital stock and securities convertible into capital stock which in the aggregate does not exceed 49 percent of the issued and outstanding capital stock of that organized association. For the purposes of the 49 percent limitation, any issued and outstanding securities that are convertible into capital stock shall be considered issued and outstanding capital stock.