Modifying or Terminating a 10b5-1 Plan Without Forfeiting the Defense

An executive adopted a 12-month 10b5-1 plan in March. Six months in, the stock has doubled, and the executive wants to sell more aggressively than the plan contemplates. The simple solution, “amend the plan,” comes with a cost that the executive may not fully appreciate: under Rule 10b5-1(c)(1)(ii)(B), any modification to a plan is treated as a new plan, which restarts the cooling-off clock. For a Section 16 officer, that means 90 more days of waiting before the next trade under the modified plan.

Termination is easier than modification in some ways (no new plan means no cooling-off for that plan), but creates its own constraints if the executive wants to adopt a replacement plan. And both modification and termination carry optics risks: sudden plan changes can look like attempts to exploit information, even when they’re legitimate.

This article walks through what counts as a modification, when termination is appropriate, the cooling-off consequences, and the optics factors that matter alongside the legal mechanics.

What counts as a modification

Under the 2023 amendments, a modification is any change to the timing, pricing, or amount of trades specified in the plan.

Material modifications

• Change to execution algorithm (fixed-share to fixed-dollar)
• Change to price parameters (adding or changing limit prices)
• Change to share quantity or dollar amount
• Change to trade-date schedule
• Extension of plan duration
• Addition or removal of tranches

Any of these triggers the restart. The modified plan is functionally a new plan. Cooling-off applies: 90 days for Section 16 officers (or 120 per the 10-Q/10-K branch), 30 days for non-officers.

Non-material changes

• Corrections to broker contact information
• Administrative updates (mailing address, notification preferences)
• Clarifications of non-substantive terms

These do not reset the plan. Document the changes clearly so they are not later characterized as modifications.

The gray zone

Some changes are ambiguous. A change that narrows broker discretion (e.g., specifying a more precise execution time) might be seen as administrative or material depending on the context. When in doubt, treat as material and restart cooling-off.

The cooling-off restart

Rationale

The amendments’ logic: a plan adopted in good faith should operate as originally contemplated. Modifications reopen the MNPI-awareness question because the modification itself may reflect new information.

Timing

Upon modification, the plan is treated as newly adopted. The certification must be re-signed. The cooling-off period begins at the modification date. First trade under the modified plan cannot occur until cooling-off ends.

Existing trades under the original plan

Trades that executed before the modification are still protected by the affirmative defense under the original plan. The modification affects forward-looking trades only.

Practical effect

Modifying a plan in September to accommodate a faster-selling schedule means you cannot execute the faster schedule until December (for a Section 16 officer).

When termination is preferred

Sometimes the right call is to terminate the plan entirely rather than modify.

Reasons to terminate

• Plan no longer matches the executive’s objectives
• Upcoming material event makes continued execution inappropriate
• Executive leaving the company
• Company restructuring or change of control affecting the plan’s relevance
• Regulatory or compliance concerns

How termination works

Termination is notification to the broker that the plan is ended. Trades already in progress may complete or be cancelled depending on the plan terms. Termination does not itself require SEC filing (though Item 408(a) requires disclosure in the next 10-Q/10-K).

Consequences

• No further trades under the plan after termination
• Affirmative defense still applies to trades executed before termination
• If executive wants a new plan, fresh cooling-off applies to the new plan

The “termination shortly before bad news” problem

Terminating a plan immediately before a negative event invites scrutiny. The SEC and plaintiffs may interpret the termination as using MNPI to avoid unfavorable trades. Document legitimate reasons clearly.

Good-faith operation

The 2023 amendments also elevated “good faith with respect to the plan” as a continuing requirement, not just at adoption. Rule 10b5-1(c)(1)(ii)(A) requires the plan to have been operated in good faith.

What this means

Plan modifications and terminations are operational decisions. If they are made to opportunistically avoid bad outcomes or capture good ones based on information the executive possesses, the affirmative defense for the entire plan may be compromised.

Examples of bad-faith operation

• Modifying the plan to increase selling right before a negative earnings announcement
• Terminating the plan just before a positive announcement to avoid selling at the pre-announcement price (keeping more shares for the rally)
• Repeatedly modifying the plan in patterns that correlate with information events

Examples of good-faith operation

• Modifying due to a material life event (divorce, new cash need, estate planning)
• Terminating because of a material non-MNPI business reason (relocation, role change)
• Modifying because the original plan underweighted a specific diversification goal

Modifications and the single-plan rule

Modifications do not create a second plan

A modified plan is still one plan. The single-plan-at-a-time rule (Rule 10b5-1(c)(1)(ii)(D)) is not violated by modification.

But replacement plans do

If you terminate a plan and adopt a new one, the new one is a separate plan subject to the single-plan rule (which is fine, because the old one is terminated).

The Item 408(a) disclosure

Public companies must disclose in 10-Q or 10-K filings each 10b5-1 plan adopted, modified, or terminated by an officer or director during the quarter. Disclosure includes:

• Names of officers/directors
• Adoption/modification/termination dates
• Plan duration
• Aggregate securities subject to the plan
• Checkbox confirmation that the plan satisfies Rule 10b5-1(c)(1)

Modifications and terminations are separate disclosure events. Frequent modifications create a disclosure trail that observers interpret.

Practical modification checklist

If you must modify:

Step 1: confirm no MNPI

Re-run the MNPI-review process with general counsel. The modification requires fresh certification.

Step 2: document the reason

Write a memo explaining the legitimate reason for modification. Material life event, change in diversification targets, plan-design correction.

Step 3: time the modification

Modify during an open window, ideally within the cleansing window following recent disclosures.

Step 4: sign fresh certification

The modified plan requires a new Rule 10b5-1(c)(1)(ii)(C) certification.

Step 5: calculate new cooling-off

First trade under modified terms is at least 90 days away (for Section 16).

Step 6: prepare for Item 408(a) disclosure

The next quarterly filing will disclose the modification. Brief the PR/IR team.

Step 7: execute the modified plan

Let the new terms run without further intervention.

Practical termination checklist

If you must terminate:

Step 1: confirm termination timing is defensible

Not right before a material event. Document legitimate reasons.

Step 2: notify the broker

Termination is effective on notice per the plan terms.

Step 3: document the decision

Memo explaining why. Retain with plan documents.

Step 4: prepare for Item 408(a) disclosure

Next quarterly filing discloses the termination.

Step 5: plan for replacement (if needed)

If you want a new plan after termination, factor in the cooling-off.

Common mistakes

Treating modification as casual

Executives sometimes treat plan amendments as minor updates. Legally, they are new plans. The 90-day restart and fresh certification are not optional.

Terminating and immediately trading

Termination of a plan does not itself authorize trading. Post-termination trades outside the plan require standard MNPI clearance. Terminating and then immediately trading is a red flag for SEC enforcement.

Not disclosing modifications properly

Item 408(a) disclosure applies to modifications as well as adoptions and terminations. Missing the disclosure is a separate rule violation.

Stacking modifications

Multiple modifications in short succession raise the question whether the plan is operating in good faith. Stable plans are more defensible than frequently-tweaked plans.

Frequently asked

Can I pause a plan temporarily?

Rule 10b5-1 does not contemplate a formal pause. Plans either execute per their terms or are terminated. Some plan documents include pause-for-cause provisions (e.g., if the executive dies or is incapacitated), which are generally treated as non-material operational terms.

What if my plan specifies a price floor that’s never met?

The plan executes only when conditions are met. If the price never hits the floor, no trades occur. At plan expiration, unfilled trades don’t execute. This is not a modification or termination; it’s the plan working as designed.

Can I modify a plan to terminate earlier?

Yes, but that modification itself is a modification subject to cooling-off if you want to adopt a replacement plan. If you just want to end the plan, terminate directly.

Does fresh cooling-off apply to sell-to-cover plans?

Sell-to-cover plans are an exception to the single-plan rule but are still subject to cooling-off at adoption. Modifications to sell-to-cover plans also trigger fresh cooling-off.

What if I inherit a pre-2023 plan?

Plans adopted before February 27, 2023 are grandfathered under the old rules. Modifying a grandfathered plan brings it under the 2023 framework.

Can I extend a plan’s duration?

An extension is a modification. Fresh cooling-off applies.

What about involuntary modifications (e.g., stock split, spin-off)?

Automatic adjustments for corporate actions (splits, dividends, reorganizations) that are specified in the plan’s own terms do not count as modifications. Adjustments not provided for in the plan may count.

Next step

If you are thinking about modifying or terminating a 10b5-1 plan, talk to general counsel before taking action. The 90-day cooling-off restart, fresh certification, and Item 408(a) disclosure all need to be coordinated. The optics of “plan changes” are often the most costly element, even when the legal compliance is clean. Stable plans, designed carefully upfront to cover the full intended trading period, beat frequent modifications.