What is a Rule 10b5-1 trading plan?

A Rule 10b5-1 trading plan is a pre-arranged, written agreement between a corporate insider and their broker that specifies the price, amount, and dates for buying or selling company securities. Once established, trades execute automatically according to the plan, providing an affirmative defense against insider trading allegations. The insider cannot possess Material Non-Public Information (MNPI) at the time they adopt the plan.

What changed with the 2023 SEC amendments to Rule 10b5-1?

The SEC's February 2023 amendments introduced major reforms: a mandatory 90-day cooling-off period (or until the next earnings release, whichever is later) for officers and directors before the first trade; a prohibition on overlapping plans; a limit of one single-trade plan per 12-month period; a good-faith requirement throughout the plan's duration; and new Form 4 checkbox disclosures indicating whether trades were made under a 10b5-1 plan.

Should investors ignore all 10b5-1 plan transactions?

Not entirely. While 10b5-1 sales are generally less informative (pre-scheduled), the timing of plan adoption can still be revealing. If an insider adopts a selling plan immediately after a stock rally, they may be locking in gains based on their knowledge of the business trajectory. Additionally, watch for plan terminations — an insider who cancels a selling plan may have received positive information since adoption.

How can you tell if a Form 4 transaction is part of a 10b5-1 plan?

Since the 2023 amendments, Form 4 includes a mandatory checkbox indicating whether the reported transaction was executed pursuant to a Rule 10b5-1(c)(1) plan. Additionally, footnotes typically state 'This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on [date].' Data aggregators like WhaleSentiment flag these transactions automatically.

Can insiders have multiple 10b5-1 plans at the same time?

No. Under the 2023 amendments, insiders are prohibited from maintaining multiple overlapping 10b5-1 plans for open market purchases or sales of the same class of securities. This closed a significant loophole where insiders could adopt multiple plans and selectively terminate whichever didn't favor them — essentially picking the most profitable outcome while claiming the affirmative defense.

What Is a 10b5-1 Plan? The Complete Guide to SEC Pre-Planned Trading

Rule 10b5-1 plans are pre-scheduled trading agreements that allow corporate insiders to buy or sell company stock on autopilot. They're designed as a legal shield against insider trading accusations — but they've also been one of the most abused loopholes in securities law. Here's everything investors need to know.

The Origin: Why 10b5-1 Plans Exist

Imagine you're the CEO of a public company. You want to diversify your portfolio by selling some of your concentrated stock position — but you always have access to material non-public information (MNPI). When can you ever sell?

This was a genuine problem. The SEC recognized in October 2000 that corporate insiders needed a mechanism to trade their company's securities in a way that couldn't be challenged as insider trading. The solution: Rule 10b5-1(c)(1) under the Securities Exchange Act of 1934.

The rule creates an affirmative defense against insider trading liability. If an insider establishes a written trading plan while not in possession of MNPI, and the plan specifies the price, amount, and date of future trades (or provides a written formula for determining them), then trades executed under that plan are presumed legal — even if the insider possesses MNPI at the time of execution.

How a 10b5-1 Plan Works

Adoption: The insider works with their broker or legal counsel to create a written plan. They must NOT possess MNPI at the time of adoption. Plans are typically established during an open trading window (after earnings are released).
Cooling-off period: Under the 2023 amendments, officers and directors must wait at least 90 days (or until after the next quarterly earnings release, whichever is later) before the first trade can execute. Non-officer/director insiders must wait 30 days.
Execution: Trades execute automatically according to the plan's terms. The insider has no discretion over individual trades — the plan runs on its own schedule.
Termination: The insider can terminate the plan at any time, but the new 2023 rules impose restrictions on how quickly a new plan can be adopted afterward.

The 2023 SEC Amendments: Closing the Loopholes

For over two decades, corporate insiders exploited significant gaps in the original rule. The SEC's amendments, effective February 27, 2023 (Release No. 34-96492), addressed these abuses comprehensively:

Reform	Old Rule	New Rule (2023)
Cooling-off Period	None — trades could execute the next day	90 days minimum (or next earnings release) for officers/directors; 30 days for others
Overlapping Plans	Allowed — insiders could run multiple plans and cancel unfavorable ones	Prohibited — only one plan at a time for same class of securities
Single-Trade Plans	Unlimited — could adopt a new single-trade plan for each transaction	Limited to one single-trade plan per 12-month period
Good Faith Requirement	Good faith only required at adoption	Good faith required throughout the plan's entire duration
Certification	No formal certification required	Officers/directors must certify they are not aware of MNPI and the plan is adopted in good faith
Form 4 Disclosure	No requirement to disclose plan status	Mandatory checkbox on Form 4 indicating trades under a 10b5-1 plan
Company Disclosure	No 10-K/10-Q disclosure required	Quarterly disclosure of insider plan adoptions and terminations in 10-Q/10-K

The Abuses That Triggered Reform

Academic research documented widespread gaming of 10b5-1 plans:

🔴 Known Exploitation Patterns

Same-day trading: Adopting a plan and executing the first trade within days — effectively using the plan as a retroactive justification for an immediate trade. (Documented by Stanford Law School, 2006)
Strategic terminations: Canceling a selling plan when the stock dropped (to avoid selling low), then adopting a new plan after the stock recovered. The insider got the timing benefit while claiming "pre-planned" status.
Multiple overlapping plans: Running two plans simultaneously — one bullish, one bearish — and canceling whichever turned out unfavorable. This was legal under the old rule.
Suspicious timing: Research by Jagolinzer (2009) found that insiders' 10b5-1 plan trades were initiated at more favorable prices than non-10b5-1 trades, suggesting insiders were timing plan adoptions around MNPI.

How to Interpret 10b5-1 Transactions as an Investor

General Rule: Less Informational, But Not Zero

Transactions executed under a 10b5-1 plan carry less real-time informational value than discretionary trades. The trading decision was made weeks or months earlier, so the insider's current view of the business may have changed. However, the plan adoption timing itself can be revealing:

Plan adopted right after a stock rally → The insider may be locking in gains, suspecting the stock is overvalued
Plan adopted during a stock decline → The insider expects further downside (rare — insiders typically wait for recovery)
Plan terminated unexpectedly → Something changed the insider's outlook. A selling plan termination could be bullish.

📋 Real-World Scenario: Reading 10b5-1 Sales

You notice that a company's CEO is selling $2M of stock per month. Alarming? Let's dig deeper:

Form 4 shows: Code S, 10b5-1 checkbox ✓ Footnote: "Pursuant to a 10b5-1 plan adopted on March 15, 2026" Pattern: Same number of shares sold on the 15th of each month → This is a ROUTINE 10b5-1 plan execution. → The selling decision was made on March 15 (6+ months ago). → The current sales carry minimal informational value. → Signal: ⚪ NEUTRAL — filter from analysis

Now imagine the same CEO also buys $500K of stock via an open-market purchase (code P, no 10b5-1 flag) while their selling plan is still running:

→ This is VERY interesting. → The CEO has a selling plan running (routine, pre-scheduled) → But they're ALSO voluntarily buying new shares at current prices → The buy is discretionary and contradicts the scheduled selling → Signal: 🟢 STRONG BULLISH — the voluntary buy overrides the automated sell in informational value

10b5-1 Plans: Red Flags to Watch

Even under the 2023 rules, certain patterns around 10b5-1 plans warrant scrutiny:

Impact on Insider Trading Analysis

For investors using insider trading signals to inform their investment decisions, 10b5-1 plans create an important filter:

Scenario	Signal Value	Action
Regular monthly sales under 10b5-1	⚪ None	Filter out from analysis
Open-market purchase (P) outside any plan	🟢 High	Strong bullish signal — prioritize
Discretionary sale (S, no 10b5-1)	🟡 Moderate	Evaluate context — clustering, size, role
Plan adoption disclosed in 10-Q	🟡 Moderate	Note the timing relative to stock price
Plan termination disclosed in 10-Q	🟡 Moderate	Selling plan cancellation could be bullish

Key Takeaways

10b5-1 plans are pre-scheduled trading agreements that provide an affirmative defense against insider trading liability
The 2023 amendments significantly tightened the rules: 90-day cooling-off, no overlapping plans, mandatory Form 4 disclosure
For signal analysis, 10b5-1 transactions are generally noise — the decision was made months earlier
Plan adoption and termination timing can still be informative — watch for patterns in 10-Q disclosures
Voluntary purchases outside a 10b5-1 plan remain the strongest bullish signal, especially when an insider is simultaneously selling under a scheduled plan
For the full regulatory framework, see our insider trading laws guide

See Which Trades Are Pre-Planned vs Discretionary

WhaleSentiment flags every Form 4 transaction as 10b5-1 or discretionary, so you can instantly filter noise from signal.

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Disclaimer: This guide is provided for educational and informational purposes only. It does not constitute financial advice, investment recommendation, or solicitation to buy or sell financial instruments. Past performance is not indicative of future results. Consult a qualified financial advisor before making investment decisions.