Trading Blackout Period

A company-imposed window during which employees with access to material non-public information cannot trade company stock — a legal compliance tool with significant practical implications for equity compensation.

A trading blackout period is a company-imposed restriction during which designated employees — typically those with access to material non-public information (MNPI) — are prohibited from buying or selling company stock. Blackout periods are most commonly imposed around earnings announcements: typically beginning two to four weeks before the end of a fiscal quarter and lifting 24–72 hours after earnings are publicly released. They may also be imposed around major corporate events like pending mergers and acquisitions, significant contract wins or losses, regulatory decisions, or any other development that could materially affect the stock price if disclosed.

Blackout periods exist because of insider trading law. Trading on MNPI — information that isn't available to the public and that a reasonable investor would consider important to a trading decision — is a federal crime under Rule 10b-5 of the Securities Exchange Act. Employees with access to earnings data, product development results, or deal information are aware of MNPI before the market is. If they trade on that information, they gain an unfair advantage over public investors and potentially commit securities fraud. Companies protect themselves (and their employees) by imposing blackout periods as a compliance control, making it harder for employees to inadvertently or deliberately violate insider trading law during sensitive windows.

For employees with equity compensation — RSUs vesting, options they want to exercise, ESPP purchase periods ending — blackout periods create timing complications. RSU vesting typically occurs on a scheduled basis, but the ability to sell the resulting shares may be blocked during a blackout. ESPP enrollment and purchase periods are often structured to end outside blackout windows, but not always. Employees who need to make equity decisions during or near a blackout period should contact their company's stock plan administrator or legal/compliance team — there are typically procedures for handling scheduled equity events that overlap with blackout periods, and taking unilateral action during a blackout can have serious consequences.

What Blackout Periods Cover

  • Who's covered: typically 'Section 16 insiders' (officers, directors, 10%+ shareholders) plus any employee with access to MNPI — often extended to all employees at smaller companies as a precaution.
  • What's restricted: buying or selling company shares, exercising options and immediately selling, selling ESPP shares, setting up new 10b5-1 plans.
  • What's typically allowed during blackout: receiving RSU vestings (the vesting is automatic), holding shares already owned, contributing to an employee stock purchase plan if enrollment predated the blackout.
  • Typical blackout timing: approximately 2–4 weeks before quarter-end through 24–72 hours after earnings announcement. Ask your stock plan administrator for exact dates each quarter.
  • How to find out: your company's legal or compliance team will send blackout notifications. The stock plan administrator (Fidelity, E*TRADE, Schwab Equity Awards) will typically block trades in restricted accounts during blackout periods.
  • Penalties for violation: insider trading violations carry criminal penalties (up to 20 years in prison), civil penalties (up to three times profits), and disgorgement of gains. The consequences are severe even for unintentional violations.

10b5-1 Plans: Trading During Blackout Legally

A 10b5-1 plan is a written, pre-established trading plan that allows insiders and restricted employees to trade company stock on a predetermined schedule — even during periods when they might otherwise have MNPI. The plan must be established when the employee doesn't have MNPI and typically requires a cooling-off period before the first trade can execute. Because the trading decisions were made at a time when no MNPI existed (and the actual trades execute automatically per the plan's schedule), they are generally protected from insider trading liability. 10b5-1 plans are commonly used by executives and significant option-holders who need to sell shares on a regular basis (for diversification or liquidity) without repeatedly navigating blackout windows. The SEC tightened the rules around 10b5-1 plans in 2023, requiring longer cooling-off periods and additional disclosure to reduce perceived abuses.

Example

A director of engineering at a public tech company has 2,000 RSUs vesting on March 31, which falls inside the company's Q1 blackout period (March 15 through April 3, two days after earnings). The RSUs vest automatically — the vesting event itself isn't blocked. However, she cannot sell the resulting 2,000 shares until the blackout lifts on April 3. She'd planned to sell to cover her taxes immediately on vest — she needs to wait until April 3. Her stock plan administrator reminds her of this in advance, and she sets up a limit order for April 3 rather than a same-day market sell to avoid executing in potential post-earnings volatility.