In any derivative suit instituted by a stockholder of a corporation, it shall be averred in the complaint that the plaintiff was a stockholder of the corporation at the time of the transaction of which such stockholder complains or that such stockholder's stock thereafter devolved upon such stockholder by operation of law.
Structure Delaware Code
Chapter 1. GENERAL CORPORATION LAW
Subchapter XIII. Suits Against Corporations, Directors, Officers or Stockholders
§ 321. Service of process on corporations.
§ 322. Failure of corporation to obey order of court; appointment of receiver.
§ 326. Action by officer, director or stockholder against corporation for corporate debt paid.
§ 327. Stockholder's derivative action; allegation of stock ownership.
§ 328. Effect of liability of corporation on impairment of certain transactions.