Title 15 › Chapter 2B— SECURITIES EXCHANGES › § 78u–4
Sets rules for private class lawsuits about securities. A person who wants to be a class representative must file a signed sworn statement with the complaint saying they reviewed and authorized the suit, didn’t buy the securities at a lawyer’s direction, are willing to represent the class and testify if needed, list all their transactions in the class period, name any times in the past 3 years they tried to be a class representative, and promise not to take extra money for serving except what the court allows. Within 20 days after the complaint is filed, a notice must be published in a national business paper or wire saying the case is pending and that anyone has 60 days from that notice to ask the court to be lead plaintiff. The court will pick a lead plaintiff within 90 days after that notice, usually giving preference to the person or group with the biggest financial stake who meets Rule 23 requirements. One person may be lead plaintiff (or an officer, director, or fiduciary of a lead plaintiff) in no more than 5 securities class actions in any 3-year period. For claims about false statements or missing facts, the complaint must say specific facts that create a strong guess that the defendant had the required state of mind; there is a special standard for credit rating agencies. If those rules are not met, the court must dismiss the case and stay discovery while the dismissal motion is pending, though parties must preserve and treat relevant documents as if they were formally requested. The plaintiff must prove the defendant caused the loss. Damages based on market price are limited by the difference between the plaintiff’s purchase or sale price and the average closing price over the 90-day window after the market learns the correct information (or, if the plaintiff sold earlier, the average from correction to the sale). Attorneys’ fees must be a reasonable percentage of the money actually paid to the class. Settlements must be public unless a court finds good cause to seal parts that would cause direct and substantial harm. The court and jury must decide who violated the law, whether it was done knowingly, and each person’s share of responsibility; defendants are jointly and severally liable only if the factfinder finds they knowingly violated the law. If some defendants can’t pay, rules allow reallocation of the unpaid share with limits (including a special rule if an individual plaintiff’s recoverable damages are more than 10% of their net worth and their net worth is under $200,000); net worth is the fair market value of assets minus debts as of the day before the plaintiff bought or sold the security. Courts must record and may sanction Rule 11 violations, usually by awarding the opposing party reasonable fees and expenses unless that would be unfair. Defined terms (one line each): "Covered person" = a defendant in a private suit under this law. "Outside director" = an outside director as defined by SEC rules. "Knowingly commits a violation" = acting with actual knowledge that a statement was false or that conduct made the securities law violated; reckless conduct is not knowing.
Full Legal Text
Commerce and Trade, Source: USLM XML via OLRC
Legislative History
Reference
Citation
15 U.S.C. § 78u–4
Title 15, Commerce and Trade
Last Updated
Apr 3, 2026
Release point: 119-73not60