---
title: "Insider Trading Blackout Periods: When Insiders Can and Can't Trade"
description: "Most companies bar insiders from trading in the weeks before earnings, but blackout windows are company policy, not SEC law. How trading windows work, the one blackout that is statutory, and why so many insider buys land right after earnings."
canonical: https://insideralpha.ai/learn/insider-trading-blackout-periods
date_published: 2026-08-03
date_updated: 2026-09-23
publisher: InsiderAlpha (https://insideralpha.ai)
---

Canonical URL: https://insideralpha.ai/learn/insider-trading-blackout-periods
Published 2026-08-03. Updated 2026-09-23.

# Insider trading blackout periods: when insiders can and can't trade

A **blackout period** is a stretch of the calendar during which a company forbids its own directors, officers, and designated employees from trading the stock. If you follow [Form 4 filings](https://insideralpha.ai/learn/sec-form-4), blackouts explain one of the most visible rhythms in the data: insider trades bunch up in the days right after earnings and go quiet in the weeks before.

## The quarterly trading window

The standard corporate policy splits each quarter in two. The **window closes** as the quarter's results take shape - commonly around two weeks before quarter-end, at some companies as early as mid-quarter - and **reopens one to two full trading days after the earnings release**, once the market has digested the numbers. Inside the open window, insiders still need to be free of material non-public information and usually need pre-clearance from the general counsel before trading.

## Blackouts are policy, not statute

No SEC rule imposes the quarterly blackout. Companies adopt trading windows to keep insiders clear of Rule 10b-5 liability - trading "while in possession of" material non-public information - and pre-earnings weeks are when that possession is presumed. The same instinct produced [Regulation FD](https://www.sec.gov/rule-release/33-7881) in 2000: if selective disclosure to analysts is a problem, then an executive who already holds the numbers is a problem too.

What the SEC does require, since [Release 33-11138, "Insider Trading Arrangements and Related Disclosures"](https://www.sec.gov/rule-release/33-11138) (December 2022), is transparency about the policy itself. Companies must file their insider trading policies as **Exhibit 19** to the annual report, so the window rules a company actually applies are a public document rather than folklore. Item 408(a) of Regulation S-K separately requires quarterly disclosure of every director or Section 16 officer who adopted, modified or terminated a trading arrangement, together with its material terms. If you want to know how a specific company runs its windows, read its Exhibit 19 rather than assuming the pattern below.

## Pre-clearance: the second gate

An open window is permission to ask, not permission to trade. Most policies add a **pre-clearance** step for directors and Section 16 officers: a written request to the general counsel, valid for a short period (commonly a few business days), that can be refused without explanation because the refusal itself would be information. That is one likely reason insiders at the same company sometimes trade on the same two or three days and then stop: clearance was granted together, and then it expired.

## The one statutory blackout: pension fund blackouts

There is a single blackout written into law. Under **Regulation BTR**, adopted in [Release 34-47225, "Insider Trades During Pension Fund Blackout Periods"](https://www.sec.gov/rule-release/34-47225) implementing Section 306(a) of the Sarbanes-Oxley Act, when a company's individual account retirement plans suspend participants' ability to trade company stock for more than **three consecutive business days** - during a recordkeeper change, for example - directors and executive officers are barred from buying or selling company equity they acquired in connection with their service. The logic: executives should not be able to exit while employees are locked in. Profits from a violation are recoverable by the company, and shareholders can sue derivatively if it does not act.

This blackout is the only one you can see coming from the outside, because it has its own 8-K item. **Item 5.04, "Temporary Suspension of Trading Under Registrant's Employee Benefit Plans"** requires the company to file within four business days of receiving the plan administrator's notice, stating the reason for the blackout and the dates it starts and ends. A 5.04 on the tape is a hard, dated window during which certain Form 4s cannot legitimately appear. See our [guide to 8-K item numbers](https://insideralpha.ai/learn/8-k-item-codes) for where 5.04 sits among the rest.

## How insiders trade through a blackout anyway

The blackout-compatible route is a [Rule 10b5-1 plan](https://insideralpha.ai/learn/rule-10b5-1): a schedule adopted while the window is open that then executes mechanically, blackout or not. Release 33-11138 ([announced December 2022](https://www.sec.gov/newsroom/press-releases/2022-222)) tightened the conditions considerably:

- **Cooling-off period.** For directors and Section 16 officers, no trade may occur under a new or modified plan until the later of 90 days after adoption or two business days after the company discloses results for the quarter of adoption, capped at 120 days. For anyone else other than the issuer, 30 days.
- **Certification.** Directors and officers must certify at adoption that they are not aware of material non-public information and are adopting the plan in good faith.
- **One plan at a time**, with limited exceptions, and only one single-trade plan in any twelve-month period.
- **A checkbox on the filing.** Every [Form 4](https://www.sec.gov/about/forms/form4.pdf) now states whether the trade was made under a plan and discloses the plan's adoption date.

That is why plan sales keep printing through earnings season: the plan was adopted months earlier and its terms were fixed then, before this quarter's numbers were known. InsiderAlpha flags trades that carry the plan disclosure, so you can tell a scheduled sale from one with no plan disclosed. A missing flag still does not prove the insider chose the date.

*Figure: A typical quarterly trading window. In this example, roughly half the quarter is closed to discretionary insider trading.*

**What a typical quarterly policy calendar looks like**

An illustrative calendar for a company on calendar quarters, with a mid-March window close and late-April earnings:

| Date | Policy state |
| --- | --- |
| ~Mar 15 | Window closes as Q1 results take shape |
| Mar 31 | Quarter ends - still closed |
| ~Apr 24 | Q1 earnings released |
| ~Apr 28 | Window reopens after two full trading days |
| ~Jun 15 | Window closes again for Q2 |

Exact dates vary by company - some close as early as mid-quarter - but the pattern is similar: under a policy like this, roughly half of each quarter is closed to discretionary insider trading.

## What blackouts mean for reading Form 4s

- **Post-earnings clusters are partly mechanical.** The window just reopened for everyone at once, so some bunching is calendar, not coordination. Check the size of each purchase and the number of distinct buyers before calling a post-earnings group a [cluster buy](https://insideralpha.ai/learn/cluster-buying).
- **An open-window buy is still a choice.** The window permits trading; it does not compel it. An officer who buys days after results come out is trading after the market has seen the same numbers.
- **Quiet quarters are ambiguous.** No insider buying for months can just mean the window barely opened - check the earnings calendar before reading absence as a verdict.
- **A trade dated inside a presumed blackout is a question, not a violation.** The window is that company's own policy, and you are guessing at its dates. Before concluding anything, check the transaction code: an award (A), a tax withholding (F) or an expiring option exercise (M) is usually permitted by policy precisely because the insider did not choose the date.

## Working out a company's window from its own filings

You do not have to guess. Three public documents, in this order:

1. **Exhibit 19 to the latest annual report** gives the policy in the company's own words, including when the window closes and reopens and who needs pre-clearance.
2. **The Item 2.02 earnings 8-K** fixes the reopening date, because the window reopens a stated number of trading days after the release rather than after any other event.
3. **The Form 4 record itself** is the check on both. Plot the transaction dates of code P and code S rows for one company across two years and the closed weeks appear as gaps you can measure. Every one of these documents is free on [EDGAR](https://www.sec.gov/search-filings).

One caution on that third step: the *transaction* date is what the policy governs, not the filing date. A Form 4 that arrives during a blackout is normal, because the trade behind it happened up to two business days earlier when the window was still open.

[See recent insider purchases →](https://insideralpha.ai/insiders/recent-buys) · [Rule 10b5-1 plans explained →](https://insideralpha.ai/learn/rule-10b5-1)

*This article is informational and is not investment advice.*