Rule 10b5-1: Insider Trading Plans Explained
A comprehensive guide to Rule 10b5-1 plans and insider trading compliance.
What Is Rule 10b5-1?
Rule 10b5-1 is a securities regulation adopted by the Securities and Exchange Commission (SEC) in August 2000 that provides an affirmative defense to insider trading liability under Section 10(b) of the Securities Exchange Act of 1934. The rule allows corporate insiders—including executives, directors, and other employees with access to material nonpublic information (MNPI)—to establish predetermined trading plans that protect them from insider trading accusations, provided the plans meet specific requirements and conditions.
The fundamental purpose of Rule 10b5-1 is to permit insiders to trade company securities in a controlled manner without violating insider trading prohibitions. By establishing a trading plan during a time when the insider is unaware of MNPI, the insider can execute predetermined trades automatically, removing the concern that any trading activity is based on nonpublic information.
Understanding Material Nonpublic Information (MNPI)
At the heart of Rule 10b5-1 lies the concept of material nonpublic information. MNPI refers to any information about a company that is not available to the general public and that could reasonably influence an investor’s decision to buy or sell the company’s securities. This includes information about pending mergers, earnings announcements, product launches, litigation, management changes, or other significant corporate developments.
The SEC defines trading “on the basis of” MNPI as occurring when a person making a purchase or sale was aware of the material nonpublic information at the time the transaction was made. Rule 10b5-1 modifies this standard by providing that trades executed pursuant to a valid Rule 10b5-1 plan are not considered to be made “on the basis of” MNPI, even if the insider subsequently becomes aware of such information after the plan has been adopted.
How Rule 10b5-1 Plans Work
A Rule 10b5-1 plan is a written securities trading arrangement between a corporate insider and a broker-dealer that establishes predetermined instructions for buying or selling company securities. The plan specifies the exact number of shares to be traded, the price at which trades will occur, and the dates or timeframes for execution. These parameters can be expressed as specific dollar amounts, share quantities, and dates, or through a written formula, algorithm, or computer program that determines these variables.
The critical feature of a Rule 10b5-1 plan is its irrevocable nature. Once adopted, the plan cannot be modified or canceled by the insider to benefit from MNPI that may become known after adoption. This prevents insiders from strategically canceling plans upon learning of negative information or modifying plans after becoming aware of positive developments. The broker executing the plan operates independently, with minimal communication with the insider after plan adoption, ensuring that the trading decisions are not influenced by the insider’s current knowledge of corporate information.
Key Requirements for Rule 10b5-1 Plans
To qualify for the affirmative defense provided by Rule 10b5-1, trading plans must satisfy several critical requirements:
Timing and Good Faith Adoption
The plan must be adopted in good faith at a time when the insider was not aware of any MNPI regarding the company or its securities. This requirement ensures that the plan is not created as a scheme to circumvent insider trading prohibitions. Additionally, directors and officers must certify in writing that they are adopting the plan in good faith and are not aware of MNPI at the time of adoption.
Cooling-Off Periods
Following amendments to Rule 10b5-1 in December 2022, specific cooling-off periods were implemented. For directors and officers, trading cannot commence until 30 days following plan adoption or modification. For other persons, a 90-day cooling-off period applies for initial plans and 30 days for plan modifications. These cooling-off periods prevent the immediate execution of trades and provide an additional safeguard against insider trading violations. Notably, the date of plan adoption and the date the issuer files financial results are not included in calculating the cooling-off period.
Specified Trading Terms
The plan must specify the amount, price, and date of proposed transactions with precision. Rather than providing discretion to the insider, the plan must include concrete trading instructions that the broker will execute automatically. This prevents the insider from exercising control over when trades occur based on current knowledge of the company.
Limited Single-Trade Plans
Non-officer persons are restricted to entering into a single-trade Rule 10b5-1 plan only once during any consecutive 12-month period. This limitation prevents the circumvention of Rule 10b5-1 protections through the adoption of multiple single-transaction plans.
The Affirmative Defense Explained
Rule 10b5-1 provides two primary affirmative defenses against insider trading liability. The first defense establishes that trades conducted pursuant to a compliant Rule 10b5-1 plan are not made “on the basis of” MNPI. This defense is available to both individuals and entities and directly addresses the fundamental element of insider trading liability.
The second affirmative defense, available specifically to directors and officers, provides additional protection by establishing that if an insider adopted a Rule 10b5-1 plan in compliance with the rule’s requirements, including the good faith certification requirement, the trade is presumed not to be made on the basis of MNPI. This presumption shifts the burden and provides enhanced protections for corporate insiders who follow the prescribed procedures.
These defenses do not eliminate insider trading liability entirely but rather establish a pathway for insiders to engage in predetermined trading without running afoul of Section 10(b) and Rule 10b-5, provided all conditions are satisfied.
Plan Modifications and Terminations
While Rule 10b5-1 plans are designed to be irrevocable, modifications and terminations are permitted under certain circumstances. However, any modification that changes the price, date, or amount of proposed transactions constitutes a termination of the existing plan and the adoption of a new plan. This means that new cooling-off periods and other requirements apply to the modified arrangement.
Critically, insiders cannot cancel or modify plans in a manner that allows them to benefit from MNPI. For example, if an insider has established a plan to sell shares at a specified price and subsequently learns that the stock price will decline, canceling the plan to avoid the predetermined sale would violate the Rule 10b5-1 restrictions. Similarly, learning of positive information that will increase stock value does not permit the insider to modify the plan to increase the number of shares sold or accelerate the sale date.
Some Rule 10b5-1 plans include automatic suspension or termination clauses triggered by corporate events such as merger announcements. These provisions are designed to avoid complications under other federal securities laws and represent good corporate governance practices.
Broker-Dealer Requirements and Restrictions
Once a Rule 10b5-1 plan is established, the broker or agent executing trades on behalf of the insider must operate with substantial independence. The rule prohibits ongoing communications between the insider and the administering broker, except for routine notifications confirming trade execution. This separation ensures that the broker is not influenced by the insider’s current knowledge of corporate information.
While broker substitution is permitted, the replacement broker must receive identical purchase and sales instructions. The substitution itself does not constitute a plan modification if the trading terms remain unchanged. However, any change in the identity of the broker that coincides with modifications to trading terms would constitute a new plan requiring compliance with all Rule 10b5-1 requirements.
Corporate Governance Considerations
Many corporations have adopted internal policies governing Rule 10b5-1 plans as part of their insider trading compliance programs. These policies typically include provisions requiring:
- Disclosure of all Rule 10b5-1 plan adoptions, modifications, terminations, and suspensions through press releases or Form 8-K filings
- Prohibition of multiple overlapping Rule 10b5-1 plans to prevent the circumvention of Rule 10b5-1 protections
- Restrictions on securities trading outside of Rule 10b5-1 plans by insiders who have adopted such plans
- Limitations on the adoption of new plans during certain periods, such as immediately following the receipt of MNPI or before the disclosure of material information
- Specified waiting periods before trades can be reinstated following a plan suspension or termination
The Good Faith Requirement
A foundational element of Rule 10b5-1 is the requirement that persons entering into plans act in good faith. Good faith encompasses both the adoption of the plan and the administration of trading under the plan. It applies to activities within the insider’s control, including the ability to directly or indirectly influence the issuer, disclosures, or the market in a manner that affects the insider’s trades.
An insider violates the good faith requirement by taking actions designed to benefit from MNPI after the plan has been adopted. This includes strategically canceling plans upon learning of negative information or modifying plans to increase trading activity after learning of positive developments. The requirement ensures that Rule 10b5-1 plans serve their intended purpose: enabling predetermined trading without reliance on nonpublic information.
Frequently Asked Questions
Q: What happens if an insider cancels a Rule 10b5-1 plan after learning material nonpublic information?
A: Canceling or modifying a plan in a manner designed to benefit from MNPI violates the good faith requirement and Rule 10b5-1. Such action exposes the insider to potential insider trading liability and other enforcement action by the SEC.
Q: How long must an insider wait before trading under a Rule 10b5-1 plan?
A: Directors and officers must observe a 30-day cooling-off period following plan adoption or modification, while other persons must observe a 90-day period for initial plans and 30 days for modifications. These periods begin the day after plan adoption or filing of financial results.
Q: Can an insider adopt multiple Rule 10b5-1 plans simultaneously?
A: Many corporate policies prohibit overlapping Rule 10b5-1 plans to prevent circumvention of the rule’s protections. Additionally, non-officer persons are limited to a single-trade plan only once per 12-month period.
Q: Is a Rule 10b5-1 plan completely irrevocable?
A: While plans are designed to be irrevocable, modifications and terminations are permitted. However, any change to trading terms constitutes a new plan, and terminations cannot be undertaken to benefit from MNPI.
Q: What public disclosure is required for Rule 10b5-1 plans?
A: Corporations typically disclose all material events in a plan’s lifecycle—adoption, modification, termination, or suspension—through press releases or Form 8-K filings with the SEC.
Rule 10b5-1 Amendments and Recent Developments
The SEC amended Rule 10b5-1 in December 2022 to strengthen protections against insider trading abuse. These amendments introduced more stringent cooling-off periods, enhanced good faith certifications for directors and officers, and greater restrictions on plan modifications and single-trade arrangements. The amendments reflected growing concerns about the misuse of Rule 10b5-1 plans and represented the SEC’s commitment to ensuring that the rule’s protections work as intended.
These reforms have made Rule 10b5-1 compliance more complex but also more robust in preventing insider trading violations. Companies and insiders must carefully navigate the expanded requirements to ensure compliance with current regulations.
References
- Rule 10b5-1: Insider Trading Arrangements and Related Disclosure — U.S. Securities and Exchange Commission. 2000-08. https://www.sec.gov/files/33-11138-fact-sheet.pdf
- 17 CFR § 240.10b5-1 – Trading “on the basis of” material nonpublic information — Cornell Law School Legal Information Institute. 2025. https://www.law.cornell.edu/cfr/text/17/240.10b5-1
- WHAT’S THE DEAL? Rule 10b5-1 Plans — Mayer Brown LLP. 2025-01. https://www.mayerbrown.com/insights-events/publications/2025/01/whats-the-deal-rule-10b51-plans
- SEC Amends Rules for Rule 10b5-1 Trading Plans and Adds New Disclosure Requirements — Skadden, Arps, Slate, Meagher & Flom LLP. 2022-12. https://www.skadden.com/insights/publications/2022/12/sec-amends-rules-for-rule-10b51-trading-plans-and-adds-new
- Understanding Rule 10b5-1 Plans — Charles Schwab Corporation. 2024. https://www.schwab.com/learn/story/understanding-rule-10b5-1-plans
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