Public companies are required to file financial information with the SEC. These companies  produce a 10-K annual report. yearly.   the report gives an overview of valuable information  beyond the report provides valuable information that goes beyond the balance sheet and income statements. Usually, the fiscal year is summarized and information is given about external and internal forces that affect the  affecting the company.

Read the 10-K closely, especially these two sections:

1. Item 1: Business
2. Item 7: Management’s Discussion and Analysis of Financial Condition and Results of Operations ("MD&A")
3. TIP:   A foreign company (a "foreign private issuer") that trades in the United States files a Form 20-F annual report. A foreign company files a 20-F if 50% or less of its outstanding voting securities are held by U.S. investors; once a company crosses that threshold it must file the same SEC forms as a U.S. company.

A  company's 10-K Report can be located on the "Investor" section of the company's web site.