SEC DEFENSE

What Is a 10b5-1 Plan?

April 1, 2026 2 minutes read By Todd Spodek, Esq.
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Rule 10b5-1 establishes the framework for insider trading offenses and provides a defensive mechanism for corporate insiders who execute trades on a predetermined schedule. This regulation allows insiders with advance trading plans to defend against securities fraud allegations. Insider trading constitutes a serious federal crime with substantial penalties, making it essential for corporate insiders to implement protective measures when trading company securities.

Rule 10b5-1: The Elements of Insider Trading

When investigating insider trading allegations under Rule 10b5-1, the SEC must establish four core elements to pursue enforcement action:

  • A Sale or Purchase of Securities — The SEC must demonstrate that a corporate insider executed a securities transaction violating federal securities laws.
  • While Possessing Material, Non-Public Information — The SEC must prove the transaction occurred while the person was aware of the material nonpublic information.
  • In Breach of a Fiduciary Duty — The SEC must show the transaction violated the insider’s fiduciary duties to shareholders.
  • With Scienter — The SEC must prove the insider acted fraudulently knowingly or recklessly.

If all four elements are established, the SEC’s Division of Enforcement may pursue civil or criminal charges. Criminal prosecution by the Department of Justice can result in imprisonment up to 20 years.

Using a 10b5-1 Plan as an Affirmative Defense

Rule 10b5-1 permits corporate insiders to mount affirmative defenses against insider trading allegations when trading according to predetermined schedules. The defense applies when the person demonstrates that the purchase or sale was pursuant to a binding contract or written plan adopted before becoming aware of the material nonpublic information.

A valid 10b5-1 plan must satisfy specific requirements:

  • Specify transaction amounts, prices, and dates for each purchase or sale
  • Include a written formula, algorithm, or computer program determining transaction parameters
  • Prohibit the person from exercising subsequent influence over execution decisions

Best Practices for Corporate Insiders

1. Establish a Plan Before Obtaining Access to Material Information

Plans must be adopted before the insider gains access to material non-public information. Insiders intending to trade company securities should plan transactions well in advance.

2. Avoid Deviating from or Modifying Plans

Insiders must strictly adhere to established plans without modifications. Deviations could raise questions about the insider’s knowledge and intent.

3. Be Prepared to Prove Validity

If relying on a 10b5-1 plan as a defense, insiders must present evidence proving its validity, demonstrating that a valid plan existed prior to accessing material non-public information.

4. Maintain Adequate Documentation

Insiders should retain executed plan copies and documentation proving non-possession of material non-public information at adoption time.

5. Seek Professional Assistance

Corporate insiders should engage experienced federal securities lawyers to ensure plan enforceability.

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