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Investing Basics

Exchange Act Section 20(a) Liability

Exchange Act Section 20(a) is a control-person liability provision. A person who directly or indirectly controls someone liable under the Exchange Act or its rules can be jointly and severally liable to the same extent, unless the controlling person acted in good faith and did not directly or indirectly induce the acts constituting the violation or cause of action.[1]

Updated 2026-09-04 · Foundation

Expanded explanation

Section 20(a) extends liability through a control relationship rather than creating a standalone fraud offense. The analysis ordinarily begins with the underlying Exchange Act or rule violation, then asks whether another person controlled the primary liable person. The statutory text expressly applies to direct or indirect control and contains its own good-faith/non-inducement defense.[1]

How it works

A disciplined Section 20(a) analysis asks four separate questions: What is the primary violation? Who is the primary liable person? What facts establish direct or indirect control by the alleged controller? Does the statutory good-faith and non-inducement defense apply? Courts can differ in how they formulate control and pleading burdens, so current circuit law matters. The statutory words should remain visible rather than being replaced by a generic 'supervisor liability' label.

Example

A company officer commits a primary Rule 10b-5 violation. A parent entity is alleged to have power over the officer's employer and the challenged disclosure process. Section 20(a) may provide a control-person theory against the parent, but the parent is not liable merely because a corporate relationship exists. Primary liability, control and the statutory defense remain distinct issues.

Key distinction

Section 20(a) is not vicarious liability for every employee error. It also differs from Securities Act Section 15. Section 20(a) uses a defense based on good faith and lack of direct or indirect inducement. Securities Act Section 15 uses different language concerning knowledge or reasonable ground to believe in the facts creating the primary liability.

Common misconceptions

  • Misconception: A manager is automatically liable for every securities violation by a subordinate.
  • Misconception: Section 20(a) creates a standalone Rule 10b-5 violation.
  • Misconception: Section 20(a) and Securities Act Section 15 use identical statutory defenses.

Example

A company officer commits a primary Rule 10b-5 violation. A parent entity is alleged to have power over the officer's employer and the challenged disclosure process. Section 20(a) may provide a control-person theory against the parent, but the parent is not liable merely because a corporate relationship exists. Primary liability, control and the statutory defense remain distinct issues.

Professional note

Control should be supported with concrete governance facts: voting power, appointment rights, contractual authority, reporting lines, decision rights, disclosure controls and actual participation where relevant. Title alone can be suggestive, but a strong analysis explains the legal and factual mechanism of control.

Related terms

  • Exchange Act Section 10(b)

    Exchange Act Section 10(b) prohibits using a manipulative or deceptive device or contrivance, in connection with the purchase or sale of a security, in violation of SEC rules adopted under the statute. It is the statutory foundation for Rule 10b-5 and a central source of federal securities-fraud doctrine.[1]

  • Rule 10b-5

    SEC Rule 10b-5 makes it unlawful, in connection with the purchase or sale of a security, to employ a fraudulent scheme, make a material misstatement or misleading omission, or engage in an act, practice or course of business that operates as a fraud or deceit.[1]

  • Scienter in Securities Fraud

    Scienter is the culpable state of mind required for a private damages claim under Exchange Act Section 10(b) and Rule 10b-5. The Supreme Court describes it as a mental state embracing intent to deceive, manipulate or defraud; negligence alone is insufficient.[1]

  • Reliance in Securities Fraud

    Reliance is the causal link between a defendant's deceptive conduct and a private securities-fraud plaintiff's decision to purchase or sell a security. Basic identifies reliance as an element of a Rule 10b-5 cause of action, while Supreme Court doctrine recognizes circumstances in which reliance can be presumed rather than proved investor by investor.[1]

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