13-F (Institutional Ownership)
13-D (5% Ownership)
Forms 3, 4, 5 (Beneficial Ownership)
Companies include a year-end summary of shares owned by benefical owners, directors, management and executive officers in their 10-K report, Item 12.
Corporate insiders are the company's officers and directors, and any beneficial owners of more than ten percent of a class of the company's shares.
13F institutions are investment managers that invest in their own account or manage the accounts of other investors and have authority over assets in excess of $100 million. Institutional investment managers can include banks, investment advisors, insurance companies, broker-dealers, mutual funds and pension funds.