Company policy vs. SEC rule

Trading windows and blackout periods: how they interact with a 10b5-1 plan.

Most executives who search "10b5-1 blackout period" are really asking two different questions at once. The first is about issuer policy: their company imposes quiet periods around earnings when insiders cannot trade. The second is about the SEC rule: Rule 10b5-1 has its own timing requirements — the cooling-off period — that have nothing to do with the earnings calendar. Understanding both, and how they interact, is essential for timing plan adoption correctly.

What issuer blackout periods are

An issuer blackout period is a company-imposed trading restriction, not an SEC mandate. Most public companies maintain an insider trading policy that identifies two types of restricted periods:

• Regular (earnings-related) blackout: Typically begins 2–4 weeks before a scheduled earnings release and lifts 1–2 trading days after the earnings announcement. The exact window is set by the company's general counsel or compliance team and can differ across companies and even across fiscal quarters.
• Event-driven (special) blackout: Triggered by a non-public corporate event — an acquisition, a material contract, a government investigation, a pending capital raise, or any other development that creates MNPI for covered persons. These blackouts are not announced in advance and can begin the moment legal becomes aware of the situation.

The SEC does not require companies to run blackout periods for their own stock, though SEC Regulation BTR restricts retirement-plan blackouts separately. The issuer blackout is a best-practice governance mechanism that predates Rule 10b5-1's 2022 amendments and sits on top of the SEC rule, not inside it.

When you must be in an open window to act

A 10b5-1 plan must be adopted at a time when the insider is not aware of material nonpublic information. In practice, this means adoption should occur during an open trading window under the issuer's policy — that is, after the earnings blackout has lifted and before any new MNPI arises.

The company's policy often requires an additional pre-clearance step for any plan adoption: the compliance officer confirms you are not on the restricted list and that no event-driven blackout is active. This step is separate from the SEC's certification requirement but usually runs in parallel.

What you cannot do: adopt a plan during an active blackout, then use the plan as cover for the MNPI that triggered the blackout. If you are aware of the information that caused the blackout when you sign the plan, the plan provides no defense.

How plan trades and blackout periods interact after adoption

This is where the mechanism becomes valuable. Once a properly adopted plan is in place, trades execute per the preset schedule — even during a future earnings blackout. The company's insider trading policy almost always includes a specific carve-out: plan-based trades that conform to a duly adopted 10b5-1 arrangement are exempt from the blackout restrictions that would otherwise apply to open-market transactions.

The executive does not cancel the plan trade. Does not request special permission for each sale. Does not contact the broker. The automated execution is the whole point of the arrangement — if the insider could intervene in response to information, the plan loses its legal character.

Confirm the carve-out language in your specific issuer's policy before adoption, because not every company has written it identically. Counsel should review the policy alongside the plan document.

The earnings calendar problem in adoption timing

This is the practical planning trap most executives underestimate. The cooling-off period for a director or officer runs 90 days from adoption, or until the filing of the next quarterly or annual report after adoption, whichever is later. That means a plan adopted on day one of an open window after Q3 earnings may not be eligible for its first trade until well into the Q4 earnings blackout — pushing the first sale to after Q4 results are out.

For an executive who gets one open window per quarter, the timing math matters a lot. A 12-month plan adopted in November may execute its first trade in February and its last in the following November — straddling four earnings blackout windows, all exempt. But getting to that February first-trade date requires picking an adoption date, factoring in the cooling-off period, and confirming the timeline with the broker, who needs lead time to set up the account and load the plan instructions.

Event-driven blackouts and an existing plan

A regular earnings blackout does not affect a properly operating 10b5-1 plan — the carve-out handles it. An event-driven blackout is different. If MNPI arises after adoption, the plan may continue to operate — the whole point of pre-establishing the plan was to insulate the trades from subsequent information. But the analysis turns on the specific facts:

• Did the insider take any action to influence trade timing after learning the information? If yes, the good-faith condition is at risk.
• Does the event qualify as a change-of-control situation that legally suspends the plan or raises tender-offer rule complications? Acquisitions and mergers have their own overlay on plan operations.
• Has the insider taken any steps to modify or terminate the plan after the blackout began? Any modification during a blackout period resets the cooling-off and undermines the defense.

The safe path during a surprise MNPI event is to leave the plan running, do nothing, and consult securities counsel immediately. The plan was adopted in good faith; let it operate in good faith.

Practical adoption-window checklist

• Confirm the earnings blackout has lifted and get written pre-clearance from the issuer's compliance office.
• Confirm no event-driven blackout is active (ask compliance directly; they may not volunteer this).
• Map the cooling-off period from your intended adoption date to identify the first permitted trade window.
• Check whether that first-trade window falls inside or outside an upcoming earnings blackout — the carve-out should cover it, but confirm the policy wording.
• Allow 2–3 weeks before the window closes for broker setup, plan document review, issuer legal review, and counsel sign-off. Rushing the last few days of an open window creates errors.
• If you are a director or officer, build in extra lead time for the Form 4 reporting workflow and the director/officer certification that SEC Release 33-11138 requires.