WILMINGTON, Del.—The founder and largest shareholder of Papa John’s International Inc sued the pizza chain’s board and chief executive late on Aug. 30, to stop what he described as “the irreparable harm” they are causing the company, according to a court filing.
John Schnatter has been in an escalating battle with the company’s board since he stepped down as chairman in July after he apologized for using a racial slur during a media training call.
