Who files a Form 4
Section 16 of the Securities Exchange Act covers three groups of people at a public company: its officers (the CEO, CFO and similar), its directors, and anyone who owns more than 10% of a class of its registered stock. Those people are the company’s insiders, and they have to tell the SEC when they trade its shares.
An insider files a Form 3 when they first become an insider and a Form 4 when their holdings change. Most changes must be reported within two business days of the trade. That deadline dates from the Sarbanes-Oxley Act of 2002; before that, insiders could wait until the 10th of the following month. Because of the short deadline, Form 4 is the most current public record of what insiders are doing.
The top of the form
The header names the insider, the company and its ticker, and the date of the earliest trade in the filing. A set of checkboxes shows the insider’s relationship to the company: director, officer (with a title such as “Chief Financial Officer”), 10% owner, or other. One filing can cover several people, for example a fund and the partner who controls it.
Table I: shares
Table I lists trades in ordinary stock. Each row has:
- Transaction date. When the trade happened, often a day or two before the filing date.
- Transaction code. One letter for the kind of trade. P is an open-market purchase and S is a sale. The full list is in our guide to transaction codes.
- Amount and (A) or (D). How many shares, and whether they were acquired or disposed of.
- Price. The price per share. When an order filled in many pieces, filers usually give a weighted average and put the price range in a footnote.
- Amount owned after the transaction. The insider’s holding once the trade settled.
- Ownership form. D for direct, or I for indirect, such as shares held in a trust, by a spouse, or by a fund the insider controls.
Table II: options and other derivatives
Table II covers stock options, restricted stock units, warrants and convertible securities. Grants and option exercises show up here. WallStPal focuses on Table I purchases and sales because those are the trades an insider chooses to make in the market with their own money.
Codes worth your attention
Most Form 4 filings are routine. A CEO receives a grant of 50,000 shares (code A), the company withholds 20,000 of them to cover taxes (code F), and nobody has bought or sold anything in the market. Codes P and S are the ones that reflect a decision to trade at market prices. On WallStPal, every other code is left out of the tables.
Why a sale is often not a signal
Insiders sell for reasons that have little to do with the company’s outlook: tax bills on vested stock, a house purchase, or simply owning too much of one company. Many sales are also scheduled months ahead under a Rule 10b5-1 trading plan. Since April 1, 2023, Form 4 has a checkbox for trades made under such a plan, and we label those trades “10b5-1”.
Purchases are different. An executive who spends their own money on the company’s shares has one obvious reason to do it. That is why investors pay closer attention to buys, especially when several insiders buy at the same time (a cluster buy).
Mistakes in filings
Filers make typing errors. A common one is putting the total amount of a trade into the price-per-share box, which turns a $46,000 sale into a “$2 billion” one. When a price is clearly wrong, WallStPal withholds the dollar value and marks the trade “check price”. Always open the original filing before relying on a number, and every trade on this site links to it.
Examples
Jamie Dimon, JPMorgan Chase, February 2016. Bank stocks had fallen sharply early that year. Dimon, JPMorgan’s chairman and CEO, filed a Form 4 showing he had bought 500,000 shares in the open market for roughly $26.6 million, about $53 a share. The code was P, the ownership was direct, and the purchase was large relative to a typical executive buy. The filing became front-page financial news, and the stock recovered over the following months. One trade proves nothing on its own, but it shows the kind of filing that gets attention: a code P purchase, a large dollar amount, and a top executive buying with personal money.
A routine filing that looks bigger than it is. Picture a Form 4 showing a CFO “acquiring” 40,000 shares and then “disposing” of 15,000 on the same day. Read the codes and the story changes: code M (an option exercise) for the 40,000 and code F (shares withheld for the exercise price and taxes) for the 15,000. No shares were bought or sold in the market. This pattern appears on thousands of filings every quarter.
This week’s filings. Below the article you will find a real purchase pulled from this week’s Form 4s, with a link to the original document so you can practice reading it.
Explain it like I’m 13
Imagine your school runs a snack shop and a few students help run it. Because they see the sales numbers before anyone else, the school makes a rule: if any of them buys or sells shares of the snack shop, they have to write it on a notice board within two days.
A Form 4 is that notice board for real companies. It says who traded (the boss, a board member, a big owner), what they did (bought or sold), how much, and at what price.
If the person running the shop buys more of it with their own pocket money, that is interesting, because they probably think it will do well. If they sell, it might just mean they want to buy a bike. That is why people care more about the buys.
Where to find the original
Every trade on WallStPal links to its filing on SEC.gov. You can also search any company on the SEC’s EDGAR full-text search.
WallStPal explains public filings. Nothing here is investment advice. Editorial policy · Corrections