William (Bill) Rinner

William (Bill) Rinner serves as Deputy Assistant Attorney General, Head of Merger Enforcement.  Before re-joining the Antitrust Division, he was Senior Regulatory Counsel at Apollo Global Management, Inc., and was responsible for overseeing antitrust and various other regulatory matters.  From 2017-2020, Bill served at the Antitrust Division first as Counsel to the Assistant Attorney General, and subsequently as Chief of Staff and Senior Counsel.  Earlier in his career, Bill practiced antitrust law at two major national firms.  After law school, he clerked for Hon. Richard Posner of the Seventh Circuit Court of Appeals.  He received a J.D. from Yale Law School, and a B.A. in Economics from the University of Notre Dame.