Charles Regan is the Firm’s Professional Responsibility Partner. Chuck advises on legal and business conflicts, risk management issues, and other professional responsibility matters arising in Mayer Brown's offices worldwide. He is a member of the Firm’s Ethics and Loss Prevention Committee. Before becoming part of the Firm’s Legal Risk Management group, Chuck was a litigator who focused on benefits and ERISA litigation, with extensive experience in pension class actions and commercial litigation. Chuck clerked for the Honorable Marvin E. Aspen of the United States District Court for the Northern District of Illinois (1988-1989).

Spoken Languages

  • English


The University of Chicago, AB

Northwestern University School of Law, JD, cum laude
Managing Editor, Law Review


  • Illinois


  • US District Court for the Northern District of Illinois
  • US Court of Appeals for the Seventh Circuit