The next place to look are in any filings the company has to make with the proper regulators. In the United States that is the Securities & Exchange Commission. Publicly held companies must file their 10Ks (annual reports - 10KSB for Small Business Public Companies) and 10Qs (quarterly reports) etc. with the SEC. Pay particular attention to Item 1 - the business description, Item 7 the Management Discussion and Analysis, and the Financial Footnotes.
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Official Securities and Exchange Commission website. Financial filings from public companies.
Worldwide search by company name or product. Basic directory information on 1.6 million companies is free; enhanced reports can be bought.
Online directory of 60 million small businesses.
Searching is by company or product. Directory information plus links to online catalogs are supplied. More than 72,000 product headings and over 170,000 companies listed.
The Foundation Center's 990 finder allows you to search for an organization's IRS return.
The charity reviewing component of the Better Business Bureau (BBB) it grades charities based on their spending and accountability, and accepts and mediates consumer complaints.
Evaluates charities in order to foster "intelligent giving."
Some reports are free, with more available if you sign up for an account.
Explore American charitable giving throughout the country using this interactive tool. With it, you can see giving by state, major metropolitan area, county, and ZIP code in 2012, including breakdowns by income bracket.