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) 


  • 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
  • Worldwide
  • Boston, MA
  • Denver, CO
  • Edwardsville, IL
  • Jefferson City, MO
  • Kansas City, MO
  • Las Vegas, NV
  • London, England
  • New York, NY
  • Philadelphia, PA
  • Princeton, NJ
  • Salt Lake City, UT
  • St. Louis, MO
  • Wilmington, DE
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Boston, MA
800 Boylston St.
30th Floor
Boston, MA 02199
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Boston, Massachusetts
Denver, CO
4643 S. Ulster St.
Suite 800
Denver, CO 80237
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Denver, Colorado
Edwardsville, IL
115 N. Second St.
Edwardsville, IL 62025
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Edwardsville, Illinois
Jefferson City, MO
3405 W. Truman Boulevard
Suite 210
Jefferson City, MO 65109
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Jefferson City, Missouri
Kansas City, MO
2345 Grand Blvd.
Suite 1500
Kansas City, MO 64108
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Las Vegas, NV
3770 Howard Hughes Parkway
Suite 200
Las Vegas, NV 89169
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Las Vegas, Nevada
London, England
200 Strand
London, WC2R 1DJ
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New York, NY
919 Third Ave., 37th Floor
New York, NY 10022
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New York City
Philadelphia, PA
2005 Market Street
29th Floor, One Commerce Square
Philadelphia, PA 19103
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Philadelphia, Pennsylvania
Princeton, NJ
100 Overlook Center
Second Floor
Princeton, NJ 08540
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Princeton, New Jersey
Salt Lake City, UT
201 South Main Street
Suite 750
Salt Lake City, UT 84111
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Salt Lake City, Utah
St. Louis, MO
7700 Forsyth Blvd.
Suite 1800
St. Louis, MO 63105
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Wilmington, DE
300 Delaware Avenue
Suite 210
Wilmington, DE 19801
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Wilmington, Delaware