Principal & Biography

Mark Zmijewski is the principal and founder of Z Consulting Group LLC, an independent consulting practice serving counsel in complex commercial litigation, securities matters, and corporate transactions. He is nationally recognized for his work in business valuation, securities litigation, and financial economics, with more than three decades of testifying and consulting experience.

Professor Emeritus at The University of Chicago Booth School of Business, Mr. Zmijewski has spent his career at the intersection of financial-economics scholarship and the evidentiary demands of high-stakes litigation. His engagements have included matters litigated in the Delaware Court of Chancery, federal district courts, and other forums across the United States, as well as antitrust proceedings before the U.S. Department of Justice, the European Commission, and the United Kingdom's Competition and Markets Authority.

Through Z Consulting Group, Mr. Zmijewski has advised and testified on behalf of leading corporations and their counsel in matters including the NASCAR antitrust action, Hewlett Packard Enterprise's acquisition of Juniper Networks, American Express Global Business Travel's acquisition of CWT, and a sustained record of airline antitrust and solvency engagements.