10b5-1 Plan

A Rule 10b5-1 plan is a legally binding arrangement that lets an insider (officer, director, or major shareholder) schedule future sales of company stock in advance, before acquiring material non-public information. Once adopted, sales execute automatically, even during blackout periods or after material secrets arrive, protecting the seller from insider-trading liability.

The insider-trading problem it solves

Under Rule 10(b) of the Securities Exchange Act, an insider who trades on material non-public information commits a crime. The rule is strict: intent does not matter. If you knew the earnings would be bad and sold shares before the announcement, you violated the law — full stop.

This creates a dilemma for executives holding large equity positions. They want to diversify, pay off mortgages, or fund charitable giving. But they cannot trade during blackout periods, and if they receive sudden bad news (a major customer leaves, a lawsuit settles), they may be locked out for months. A Rule 10b5-1 plan solves this by treating pre-commitment as a legal safe harbour. If you decide to sell shares today, before you learn any secrets, and you lock that decision into an automatic schedule, the law treats you as if you had no inside information when the sale executes weeks or months later.

How it works in practice

An executive hires a broker or uses their company’s legal team to draft a 10b5-1 plan. The plan specifies a schedule: “Sell 10,000 shares on the 15th of every quarter” or “Sell all vested RSUs on the vesting date.” The insider signs a declaration that they have no knowledge of material non-public information at the time of adoption and that they intend to comply with the plan.

A waiting period then kicks in — typically 90 calendar days, sometimes longer. During this period, the insider cannot modify or cancel the plan (except under rare hardship conditions approved by their company). Once the waiting period passes, trades execute on the specified schedule, automatically, regardless of whether the insider later acquires material information.

The automation is central to the defence. Because the insider cannot intervene, no court or regulator can accuse them of timing the sale to exploit inside knowledge.

The affirmative defence mechanics

Rule 10b5-1 is an “affirmative defence” — it does not prevent the SEC from investigating or charging you; instead, it gives you a shield if they do. You must prove that you adopted the plan in good faith, without knowledge of the material information that later materialized, and that you complied with the plan as written.

In practice, this means:

• Document the plan’s creation date and your signed representations.
• Demonstrate that you had no access to the material fact at the time of adoption (e.g., the deal was not yet negotiated; the earnings were still being finalized).
• Show that trades executed exactly as scheduled, with no intervention.

The SEC has brought cases against executives who created plans while claiming ignorance but had access to the material information. The burden is on you to prove good faith; the SEC does not have to disprove it.

Real-world complications: the waiting period

Most companies impose a 90-day holding period before trades begin. Some brokers add an extra 30 or 60 days for administrative reasons. During this time, the insider cannot touch the plan — no amendments, no cancellations, no early exit.

This creates a real constraint. An insider who creates a plan to sell shares in January but then learns of a catastrophic acquisition target three weeks later cannot pull the plan back. They will watch their shares execute on schedule and may suffer the reputational damage of selling into a collapse, even though they broke no law.

Smart executives time plan adoption carefully: create it after a major announcement (e.g., the quarter’s earnings are public) and before sensitive meetings begin, so the window of potential secrets is narrowest.

Overlap and concurrent plans

An insider can have only one 10b5-1 plan per security at a time. Once a plan is active, they cannot create a second plan for the same stock until the first plan’s final trade has executed. This prevents “daisy-chaining” plans to engineer a seemingly automatic but actually discretionary sale schedule.

An insider can, however, have separate plans for different securities — e.g., a plan to sell shares and a separate plan to sell options. The rules allow this flexibility.

Termination and early exit

Once a plan is adopted and the waiting period passes, the insider can usually terminate the plan only if material circumstances change — e.g., a severe financial hardship, a death in the family, or an unexpected job loss. Casual cancellation is not permitted; the company’s general counsel typically signs off on hardship terminations.

If the insider does terminate, they have to wait another 90 days before adopting a new plan for the same security. This “cooling-off” period prevents abuse.

The reputational angle

An insider’s decision to adopt a 10b5-1 plan is public. The plan is disclosed in proxy statements and sometimes in press releases. Some executives market their plans as a signal of confidence (“I’m so bullish I’m scheduling regular purchases”) or as evidence of discipline (“I diversify automatically, no emotion”). But the same market can interpret a plan cynically: executives sometimes adopt plans right before downturns, giving the appearance that insiders are quietly heading for the exits.

Timing plan adoption is therefore a matter of both law and optics.

Recent regulatory scrutiny

The SEC has tightened 10b5-1 rules in recent years, lengthening waiting periods and restricting concurrent plans. The theory is that some insiders were adopting plans opportunistically — announcing a plan after positive news, then executing sales before negative news arrived. By requiring longer cooling-off periods and tighter documentation, regulators aim to close those gaps.

Companies have also tightened their own policies, requiring executives to certify that they have no knowledge of undisclosed material information and sometimes prohibiting plans during certain calendar windows around expected earnings announcements.

Alternatives and complements

A 10b5-1 plan is not the only way for insiders to manage equity sales. Insiders can also wait for open windows within blackout periods or exercise covered calls to generate cash without selling. But for large, routine diversifications, 10b5-1 plans remain the standard tool.

Some executives combine multiple strategies: a core holding under a long-term 10b5-1 plan for wealth building, plus opportunistic open-window sales when blackout periods lift.

See also