Learn
SEC filing guides
What insiders, hedge funds and activist investors have to report, and how to read it.
- What is a Form 4?A Form 4 reports a company insider's trade in their own company's stock, filed with the SEC within two business days. What it shows, who files it, and how to read one.
- What is a 13F filing?Form 13F lists the stock holdings of investment managers with $100M+ in US securities, filed within 45 days of each quarter's end. What it shows and what it leaves out.
- What is a Schedule 13D?A Schedule 13D is filed by an investor who crosses 5% of a company's voting stock and may seek to influence it. Deadlines, what it shows, and how it differs from a 13G.
- How to read insider buyingNot every insider purchase means the same thing. How to tell a meaningful open-market buy from noise: who bought, how much, how many insiders, and when.
- Form 4 transaction codesWhat the letter codes on a Form 4 mean, and why only a few of them are real open-market buying. P, S, A, M, F, G and more, explained.
General education, not investment advice.