As a starting point, EDGAR is a free platform for searching the filings of companies required to make public disclosures. The lion's share of those filings are made by public companies.
There are a number of different ways to search and users can limit their searches to certain sets of company filings. This is a good starting page for accessing EDGAR, link.
To search for a public company, type the company’s name or ticker symbol in the search bar at the top of the home page.
EDGAR also supports full-text searching for filings in the past four years and boolean search strings (AND, OR, NOT) . The advanced search option also supports truncation (*), phrase searching and defining the order of terms.
Results can be sorted by type of form filed, date and other means.
BloombergLaw. User-friendly interface for searching corporate filings from late 1990s forward. Bloomberg login required.
Lexis Advance. You can search EDGAR filings from the late 1990's forward using the Lexis platform. Searches can be constructed the same way as other types of searches on Lexis.
Westlaw. You can search EDGAR filings from the late 1990's forward using the Westlaw platform. Searches can be constructed the same way as other types of searches on Westlaw.
