This field identifies the party that initiates the legal threat or action -- for instance, the plaintiff in a court case or the person who sends a cease-and-desist letter. If there are multiple parties, list all of them. Names should be written out as they normally appear (first name followed by last name). Multiple names should be separated by semi-colons (";"). For example: “Joe Smith; Sue Smith; Trey Smith". If the legal threat is a lawsuit, the relevant court documents will contain information regarding the parties involved.