John Koski is a leading lawyer with a concentration in the representation of law firms, lawyers, and business organizations in areas involving litigation and disputes, legal ethics and professional responsibility, risk management and compliance, and related matters. Previously, John served as inside counsel for Dentons, the world's largest global law firm. During his 19-year tenure as the US General Counsel and then Global Chief Legal Officer, John was responsible for meeting the legal needs of a firm with 13,000+ lawyers and business professionals, generating multibillion-dollar annual revenues, across 160+ locations in 80+ countries. John chaired the Global Risk Management Committee, served on the Global Management Committee, and reported to the Global Board. Across his 30+ years at Dentons, John regularly advised the firm and other clients on governance, structure, litigation, transactions, insurance, regulation, compliance, investigations, and ethics matters.

Since 2019, John has been a Lecturer in Law at the University of Chicago School of Law, where he teaches professional responsibilities applicable to representing business organizations. John also is a member of the Association of Professional Responsibility Lawyers and the American Bar Association’s Center for Professional Responsibility; a founder and member of different peer groups of law firm general counsel and ethics lawyers; and has conducted more than 100 accredited lectures, seminars, and other presentations on legal ethics, risk, and professionalism topics. John also is a member of the board of Lawyers Defending American Democracy and is active in the intersection of legal ethics and democratic principles.