The articles of incorporation must prescribe the classes of shares and the number of shares of each class that the corporation is authorized to issue. Trea- sury stock should not be deducted from issued capital stock.Authorized stock is the maximum number of shares that a corporation is legally permitted to issue, as specified in its articles of incorporation. Treasury stock should not be deducted from issued capital stock. Authorized capital stock is the largest amount of shares a company is permitted to issue. â–« The issuance and transfer of stock certificates.