The Company & Industry Research tabof the Business Management Subject Guidehas a list of useful tools for researching the company you're interviewing with. These include:
General Company Databases: Good sources for company information of all types, including financial statements, ownership data, and names and sometimes even contact information for officers and executives.
PrivCo is a new tool that specializes in information on private companies.
Investment Analysts' Reports: If your company is public, you can find investment analysts' reports on the company from