A strike suit is a lawsuit

Lawsuit

A lawsuit or "suit in law" is a civil action brought in a court of law in which a plaintiff, a party who claims to have incurred loss as a result of a defendant's actions, demands a legal or equitable remedy. The defendant is required to respond to the plaintiff's complaint...

brought by a single person or group of people with the purpose of gaining a private settlement before going to court that would be less than the cost of the defendant's legal costs. Such suits frequently appear where the defendant is a considerably larger entity than the plaintiff, such as a corporation or an estate.

Strike suits in Securities Law

Company shareholders sometimes use strike suits as a means of addressing perceived failures by or discontentment with the company while avoiding becoming embroiled in litigation themselves.

• A minor shareholder sues a company for falling short on projected earnings. The lawsuit makes multiple technical claims of incompetence by the company.
• A minor shareholder sues a company for failure to follow bylaws set by the company. The lawsuit makes multiple technical claims of bylaw infractions by the company.