Research on private companies (particularly small private companies) can be challenging, since private companies are not required to make available the same information required of public companies. It is often necessary to search in a number of different sources for any available information, including the company's website and local/regional news sources.
If, after searching in the databases listed in the box above, you are unable to locate any information about your private company, try the following databases.
And don't forget the company's website! Many public companies link their annual reports and SEC filings under the "Investor Relations" section of their website.
Check out individual stock exchanges and indexes for information as well: