Generally before the end of the second business day following a reportable transaction. A Monday transaction is generally due Wednesday if both following days are business days.

Do weekends count toward the deadline?

No. The general rule counts business days. A Friday transaction is generally due Tuesday when Monday and Tuesday are business days; holidays can change that timeline.

Does a new Form 4 mean the trade happened today?

No. Transaction, filing, and detection dates differ. Even timely filings usually follow the trade, and late filings can report substantially older activity.

Form 4 filing deadline: the two-business-day rule

By InsiderClusters · Updated 2026-10-13 · Sources & methodology

Form 4 is generally due before the end of the second business day after a reportable transaction. The SEC Form 4 instructions specify the rule and exceptions, including rules for determining execution dates in some transactions.

Examples of the general deadline

Monday trade: generally due Wednesday, if Tuesday and Wednesday are business days.
Friday trade: generally due Tuesday, if Monday and Tuesday are business days.
If a relevant day is a holiday, check the applicable business-day calendar rather than adding two calendar days.

Exceptions and delayed reports

Not every change in ownership follows the same reporting treatment. Certain exempt acquisitions can be reported later on Form 5; the SEC investor bulletin explains the distinction. A plan trade is not automatically exempt from Form 4 reporting.

A late filing can report an older transaction. Read the transaction date and explanation of responses rather than assuming the filing date is the purchase date. An amended filing can correct prior information without representing a new trade.

Three dates to keep separate

Transaction date: when the reported purchase or other event occurred.
Filing date: when the report was filed with the SEC.
Detection date: when our system processed enough information to identify a cluster.

What this means for insider buying alerts

Alerts follow public filing, processing, and delivery. They do not arrive at the moment an insider trades. Compare dates in the insider buying directory and use the Form 4 walkthrough to check the underlying record. Our methodology describes detection and data limits.

Frequently asked questions

When is Form 4 due?: Generally before the end of the second business day following a reportable transaction. A Monday transaction is generally due Wednesday if both following days are business days.
Do weekends count toward the deadline?: No. The general rule counts business days. A Friday transaction is generally due Tuesday when Monday and Tuesday are business days; holidays can change that timeline.
Does a new Form 4 mean the trade happened today?: No. Transaction, filing, and detection dates differ. Even timely filings usually follow the trade, and late filings can report substantially older activity.