If you are looking for contact information for board of directors, directors, presidents, etc., go to Hoover's Academic Pro. 

Go to the homepage and click on Find Contacts. 

On the left-hand side, select Contact Type. If you want to search for a specific company, type the name in Company Type and click on Contact Level to choose a position in the company. If you are searching for a keyword in a title, type it in under Title Contains. Once you are done, click on Results at the bottom of the page.