US Code
CHAPTER 2B— SECURITIES EXCHANGES
§ 78t. Liability of controlling persons and persons who aid and abet violations

(a) Joint and several liability; good faith defenseEvery person who, directly or indirectly, controls any person liable under any provision of this chapter or of any rule or regulation thereunder shall also be liable jointly and severally with and to the same extent as such controlled person to any person to whom such controlled person is liable (including to the Commission in any action brought under paragraph (1) or (3) of section 78u(d) of this title), unless the controlling person acted in good faith and did not directly or indirectly induce the act or acts constituting the violation or cause of action.
(b) Unlawful activity through or by means of any other personIt shall be unlawful for any person, directly or indirectly, to do any act or thing which it would be unlawful for such person to do under the provisions of this chapter or any rule or regulation thereunder through or by means of any other person.
(c) Hindering, delaying, or obstructing the making or filing of any document, report, or informationIt shall be unlawful for any director or officer of, or any owner of any securities issued by, any issuer required to file any document, report, or information under this chapter or any rule or regulation thereunder without just cause to hinder, delay, or obstruct the making or filing of any such document, report, or information.
(d) Liability for trading in securities while in possession of material nonpublic informationWherever communicating, or purchasing or selling a security while in possession of, material nonpublic information would violate, or result in liability to any purchaser or seller of the security under any provisions of this chapter, or any rule or regulation thereunder, such conduct in connection with a purchase or sale of a put, call, straddle, option, privilege or security-based swap agreement with respect to such security or with respect to a group or index of securities including such security, shall also violate and result in comparable liability to any purchaser or seller of that security under such provision, rule, or regulation.
(e) Prosecution of persons who aid and abet violationsFor purposes of any action brought by the Commission under paragraph (1) or (3) of section 78u(d) of this title, any person that knowingly or recklessly provides substantial assistance to another person in violation of a provision of this chapter, or of any rule or regulation issued under this chapter, shall be deemed to be in violation of such provision to the same extent as the person to whom such assistance is provided.
(f) Limitation on Commission authorityThe authority of the Commission under this section with respect to security-based swap agreements shall be subject to the restrictions and limitations of section 78c–1(b) of this title.

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