Insider filings

The two filing families

Forms 3, 4, and 5 report beneficial ownership under Section 16. They identify the company, the people or entities making the disclosure, the securities they own, and changes in that ownership.

Reporting people generally include the issuer's directors and officers and anyone who beneficially owns more than 10% of a covered class of equity securities.

Form 144 belongs to a different filing regime. It gives notice of a proposed sale of restricted or control securities under Rule 144.

Form	What it reports	General timing
`Form 3`	Initial beneficial ownership	Usually within 10 days after becoming a reporting person
`Form 4`	Changes in beneficial ownership	Usually within two business days of the transaction
`Form 5`	Limited deferred or missed Section 16 reporting	If required, within 45 days after the issuer's fiscal year ends
`Form 144`	Proposed sale of restricted or control securities	When required, the same day as placing the sale order or executing the sale directly with a market maker

Reading Forms 3, 4, and 5

Each filing identifies an issuer, the company whose securities are reported, and one or more reporting owners, the people or entities making the disclosure.

The filing separates securities into two groups:

Non-derivative securities, such as common stock, represent the ownership interest directly
Derivative securities, such as options or warrants, derive their value from an underlying security and can have exercise and expiration terms

Each group can contain transaction rows and holding rows. A transaction row reports an acquisition, disposition, exercise, conversion, award, gift, or other event. A holding row reports an ownership position without a transaction on that row.

Transaction codes

The transaction code identifies the event, such as a purchase, sale, award, or option exercise. The acquisition or disposition flag shows whether securities moved into or out of the reporting owner's position. Quantity and price describe the reported terms, while the ownership type shows whether the resulting position is held directly or through another person or entity. Footnotes can qualify any of these values.

For investors analyzing insider activity, P and S are usually the most useful codes. P identifies an open-market or private purchase, while S identifies an open-market or private sale.

The SEC defines the following ownership transaction codes:

Code	Reported event
`A`	Grant, award, or other acquisition under Rule 16b-3
`C`	Conversion of a derivative security
`D`	Disposition back to the issuer under Rule 16b-3
`E`	Expiration of a short derivative position
`F`	Securities delivered or withheld to pay an exercise price or tax obligation
`G`	Gift
`H`	Expiration or cancellation of a long derivative position with value received
`I`	Discretionary transaction under Rule 16b-3
`J`	Other acquisition or disposition described in the filing
`K`	Equity swap or similar instrument
`L`	Small acquisition under Rule 16a-6
`M`	Exercise or conversion of a derivative exempt under Rule 16b-3
`O`	Exercise of an out-of-the-money derivative
`P`	Open-market or private purchase
`S`	Open-market or private sale
`U`	Shares tendered in a change-of-control transaction
`V`	Transaction reported voluntarily before it was required
`W`	Acquisition or disposition through a will or inheritance
`X`	Exercise of an in-the-money or at-the-money derivative
`Z`	Deposit into or withdrawal from a voting trust

Ownership and footnotes

Direct ownership generally means the reporting owner holds the security in their own name. Indirect ownership can involve a trust, spouse, partnership, corporation, or another entity. The filing can describe the nature of that relationship.

Footnotes can qualify almost any value. They often explain weighted-average prices, vesting schedules, indirect ownership, transaction codes, or corrections. Read them before treating a row as complete on its own.

Reading Form 144

Form 144 gives notice that a person intends to sell restricted or control securities. It can identify:

the issuer and the person for whose account the securities may be sold
the broker and approximate sale date
the securities proposed for sale and their aggregate market value
how and when the person acquired the securities
securities sold during the prior three months

A notice does not show that the sale occurred and does not establish compliance with Rule 144. Treat it as a proposed sale, not as an executed insider transaction. The SEC's Rule 144 overview explains the filing requirement.

Important details

A filing can contain several related actions. An option exercise and the sale of the resulting shares, for example, appear as separate rows and should not be read as one transaction.
Form 3 can contain holdings without transactions. It records initial ownership, so a filing with no transaction rows can still carry useful ownership data.
Form 5 can report older events. The transaction date can be much earlier than the date the SEC accepted the filing.
Reported balances are not calculated balances. Chadwin returns shares owned after a transaction and transaction total value only when the filer reports them. It does not calculate a missing total from quantity and price or reconstruct a missing balance from earlier holdings and transactions.
A joint filing can leave transactions unassigned. A filing can name several reporting owners without saying which owner each transaction belongs to. In that case, Chadwin returns the owners for the filing but leaves the transactions unassigned.
Form 144 reports three separate lists. Proposed sales, acquisition history, and sales during the prior three months appear in separate parts of the filing. Chadwin returns each list as filed and does not combine its entries into a filing total.
Amendments remain separate. An amended filing can correct metadata, values, or rows, but the source does not provide one rule that matches every amended row to the original. Read the original, amendment, remarks, and footnotes together.