In general, it's easier to find information companies that trade on a stock exchange (public companies) or companies with large public profiles. The business databases will include articles about all types of companies.
Public companies and Subsidiaries
Primary sources of information on companies include documents such as Annual Reports, SEC filings, (10-K, 10-Q, 20-F, Prospectuses, Proxy Statements), News Releases, Company documents and corporate webpage. This information may include presentations, interviews, videos and promotional materials in addition to financial statements. Note that SEC filings will only be available for public companies. International companies trading on a North American stock exchange file a form 20-F instead of the 10-K. Look for Investor Relations, Employment, Press Kits as well as statements concerning ethics, sustainability, partnerships.
Examples of primary sources:
Use these sources for a quick overview of a company.
Information about a company's competitive environment can often be found in industry reports. These reports can sometimes be found using the industry codes for a company (SIC, NAICS). These codes are often listed in the company databases.