Start with the transaction code in the Form 4 row: P means a purchase, S a sale, and A a grant, award, or other acquisition from the company. Then check whether the row is in Table I or Table II, whether the shares were acquired or disposed, and what the footnotes say. An acquisition is not automatically an open-market purchase: an award, option exercise, or tax-related transaction can also increase or reduce reported holdings.
Find the transaction row and its code
A Form 4 reports changes in beneficial ownership by certain company insiders, including officers, directors, and people who own more than 10% of a class of the issuer’s securities. The SEC says the form generally must be filed within two business days after the transaction date. SEC Investor Bulletin: Forms 3, 4, and 5.
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- Identify the reporting person and issuer. Check who filed and which company’s securities are covered.
- Note the transaction date. This is the date shown for the reported transaction, not necessarily the filing date.
- Find the transaction row and code. The code is the quickest way to distinguish a purchase, sale, award, or other event.
| Code | What it generally indicates | How to read it |
|---|---|---|
| P | Purchase | Purchase on an exchange or from another person; the Form 4 instructions also cover open-market and private purchases. |
| S | Sale | Sale on an exchange or to another person. Check the price, amount, plan disclosure, and footnotes for context. |
| A | Grant, award, or other acquisition from the company | Usually reflects securities received from the issuer, not an insider voluntarily buying shares in the market. |
| D | Sale or transfer back to the company | Do not assume this is an ordinary market sale. |
| F | Payment of an exercise price or tax liability by delivering or withholding securities | May explain a disposition without a conventional market sale. |
| M | Exercise or conversion of a derivative security | Read the derivative details; this is not itself proof of an open-market stock purchase. |
| G | Gift | A reported disposition may be a transfer, not a sale for cash. |
| J | Other transaction | The transaction should be explained in a footnote. |
The SEC’s Form 4 instructions define the transaction codes. The SEC investor bulletin also describes P as a purchase, S as a sale, and A as a grant, award, or other acquisition from the company.
Check which securities and table are involved
Form 4 separates reported securities into two tables. Table I covers non-derivative securities, such as common stock. Table II covers derivative securities, such as options, warrants, or convertible securities. A transaction in Table II should not be casually described as a purchase or sale of common stock: the row may concern an option or another instrument with different terms.
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For an award, check the security title and table as well as the A code. An A-coded row means an acquisition from the company, but the security received may be a derivative rather than immediately owned common shares.
Match the code to the acquired-or-disposed indicator
Read the column showing whether the securities were acquired or disposed. That indicator should make sense alongside the transaction code: for example, a P-coded purchase should not be marked as a disposition. SEC staff guidance discusses consistency between the reported code and the acquired/disposed characterization. SEC Corporation Finance interpretations.
If the code and indicator seem inconsistent, do not resolve the discrepancy by guessing. Review the complete filing and its notes; consult the issuer’s or SEC’s filing record if needed.
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The code gives the transaction category, but the other fields establish the scale and ownership context. Compare the reported amount and price with the holdings after the transaction, and note whether ownership is direct or indirect. Indirect ownership can involve securities held through another person or entity, so it should not automatically be described as the reporting person’s directly held shares.
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Read the footnotes before turning a row into a plain-English summary. They may explain the transaction’s circumstances or a trading plan. In an SEC sample filing, for example, an S-coded sale is explained as having been made under a Rule 10b5-1 trading plan adopted earlier. SEC Form 4 example.
Distinguish an insider purchase from an award
When the code is P
Describe a P-coded transaction as a purchase, then use the price, amount, security type, and footnotes to say what was bought and how. A P row in Table I is different from a transaction involving a derivative in Table II, even though both appear on Form 4.
When the code is A
Describe an A-coded transaction as a grant, award, or other acquisition from the company. Do not call it an insider’s open-market purchase unless the filing separately reports such a purchase. The distinction matters: receiving an award is an acquisition, but it does not establish that the insider chose to invest personal funds at the prevailing market price.
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M generally identifies an exercise or conversion of a derivative; F can identify securities delivered or withheld to cover an exercise price or tax liability. These transactions can be part of an option exercise or related settlement rather than a conventional buy or sell order. Use the table and footnotes to describe the instrument and event accurately.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Does an insider sale mean the person is bearish?
No. A sale reports a transaction, not the seller’s motive or forecast. The SEC notes that insiders may sell for reasons including liquidity and diversification. SEC, Insider Transactions and Forms 3, 4, and 5 (Feb. 2013). Report any disclosed plan or explanation, but do not infer a bearish view from an S code alone. The bulletin also notes that investors may consider whether insiders hedge their economic exposure; the Form 4 row should be read in context rather than treated as a complete account of that exposure.
A careful one-sentence summary
A useful summary names the reporting person, transaction date, code, security and table, amount and price where reported, post-transaction holdings, ownership form, and any relevant footnote. For example: “The director reported an S-coded sale of [security] on [date]; the filing lists [amount] at [price], shows [post-transaction holdings] held [directly/indirectly], and notes [disclosed plan or explanation].” Replace the bracketed details with what the filing actually reports, and omit a detail if it is not provided.
That format separates what the filing establishes from interpretation: P, S, and A identify transaction categories; the table identifies the type of security; and the remaining fields and footnotes supply the context.
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