1. Corporate officers, directors, and employees who traded the corporation‘s securities after learning of significant, confidential corporate developments;
  2. Employees of law, banking, brokerage and printing firms who were given such information to provide services to the corporation whose securities they traded;
  3. Government employees who learned of such information because of their employment by the government; and
  4.  Other persons who misappropriated, and took advantage of, confidential information from their employers.