Validation of certain share authorizations. Authorized shares become issued shares when "issued" or distributed to a stockholder."Authorized shares" refers to the number of shares the corporation is allowed to issue under its certificate or articles of incorporation. Section 1521 - Authorized shares (a) General rule. Authorized shares are how many shares of stock the corporation can issue once it's formed. Shares can be issued only once, but they can be sold and traded. If outstanding shares are less than authorized shares, the difference (unissued stock) is what the company retains in its treasury.