Many databases provide a basic listing of the officers and directors for a company, but if you are looking for more in-depth information try the sources listed here.
Research and create lists of executives, directors, and key personnel in U.S. and international companies
TIP: Select Get Company Info at bottom right, then open Company Dossier. There will be an EXECUTIVE tab on the resulting page.
-People Search option
-Great coverage of personnel within an organization beyond the top ranking executives
-Detailed Employment Profile for top positions