A former Judge in Madison County, Illinois, Don Flack is an accomplished trial attorney and member of the firm’s Litigation practice group. In his practice, he primarily focuses on catastrophic events litigation, including professional negligence and products liability, class action matters and mass torts. Don also litigates business disputes, as well as employment and labor related matters in Illinois.

He has argued appellate matters in state and federal courts across the country, and co-authored briefs before the U.S. Supreme Court. Don also has experience with complex business litigation and governmental affairs. Throughout his career, he has handled cases in more than 20 venues across 10 different states. While on the bench, Don presided over dozens of jury and bench trials.

With a mix of both private practice and judicial experience, Don brings a unique perspective to his clients. Prior to joining the firm, Don served as a judge for more than five years in Madison County, Illinois. Before that, he worked as a special Assistant State’s Attorney in Madison County, where he managed civil litigation and personnel disputes through arbitration and litigation, and also served as compliance counsel. He also has more than 20 years of experience in private practice for law firms in Illinois.


  • Saint Louis University School of Law  (J.D., magna cum laude)
    • Saint Louis University Public Law Review, Editor in Chief
  • Southern Illinois University - Edwardsville  (B.S.)
    • Business Economics


  • Missouri
  • Illinois
  • U.S. District Court, Central District of Michigan
  • U.S. District Court, Southern District of Illinois
  • U.S. District Court, Northern District of Illinois
  • U.S. Court of Appeals, Fourth Circuit
  • U.S. Court of Appeals, Seventh Circuit
  • U.S. Supreme Court

Professional Activities

  • The Missouri Bar 
  • Illinois State Bar Association 
  • Bar Association of Metropolitan St. Louis 
  • St. Clair County (Illinois) Bar Association 
  • Madison County (Illinois) Bar Association 
  • Defense Research Institute 
  • The Illinois Association of Defense Trial Counsel 
  • RiverBend Growth Association
  • Edwardsville/Glen Carbon Chamber of Commerce

Charitable and Civic Involvement

  • Bethalto Village Trustee (2000-2012) 
  • Bethalto Education Association (President, 2009-2010) 
  • Bethalto Plan Commission (Member, 1999-2000; Chair, 2000-2001) 


  • The Best Lawyers in America®, Commercial Litigation, Mass Tort Litigation / Class Actions - Defendants, Product Liability Litigation - Defendants, Professional Malpractice Law - Defendants (2024)
  • Top Metro East Area Lawyer, Leading Lawyers (2021)
  • Madison County Federation of Labor, Friend of Labor (2012)
  • Multimillion-Dollar Advocates Forum®, Member (2011-present)
  • National Trial Lawyers Association®, Top 100 Trial Lawyer (2011)
  • Served on the Local Rules Committee for the U.S. District Court for the Southern District of Illinois (2009)
  • Illinois Super Lawyers®, Rising Star (2008, 2009)
  • Public Justice®, Finalist, Trial Lawyer of the Year (2003)
Contact Us
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  • Orange County, CA
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  • St. Louis, MO
  • Washington, D.C.
  • Wilmington, DE
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Chicago, IL 60606-1520
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115 N. Second St.
Edwardsville, IL 62025
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Royal College of Surgeons of England
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1007 North Market Street
Wilmington, DE 19801
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