Ariana Tadler, the managing partner of class action plaintiffs firm Milberg Tadler Phillips Grossman, announced on Tuesday that she and three other attorneys would be leaving to start their own firm, to be called Tadler Law.

Tadler, who has led Milberg Tadler since it was formed 18 months ago by joining the operations of Milberg with resources from the mass torts and personal injury firm Sanders Phillips Grossman, called her new firm a “boutique class action and complex litigation firm” that will have offices in New York City and San Francisco.