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St. Louis, MO



  • Tulane University School of Law, J.D., 2006
  • Princeton University, B.A. in History, magna cum laude, 2003


  • Missouri
  • Illinois
  • District of Columbia
  • Maryland
  • U.S. Courts of Appeals for the
    • 7th Circuit
    • 8th Circuit
  • U.S. District Courts for the
    • Eastern District of Missouri
    • Northern District of Illinois
    • Southern District of Illinois
    • District of Maryland
    • District of Columbia

Practice Description

Charles N. Insler concentrates his practice on complex commercial litigation including antitrust and unfair competition litigation, appellate work, business torts, class action litigation, securities litigation, and cybersecurity. He also has experience representing clients in various insurance matters and has defended employers against discrimination claims. Mr. Insler represents a variety of clients in both state and federal courts.

Before joining HeplerBroom, Mr. Insler worked for a boutique firm in Baltimore, litigating class action securities fraud and fiduciary duty cases in state and federal courts around the country. Before that, he served as the law clerk to a Federal Magistrate Judge on the U.S. District Court for the Eastern District of Missouri and as a staff attorney for the U.S. Court of Appeals for the Sixth Circuit.

Mr. Insler is an accomplished writer, and his works, both legal and non-legal, have appeared in national and international publications.

Bar/Professional Associations

  • American Bar Association
    • Forum on Communications Law
  • Defense Research Institute
  • Illinois Bar Association
  • The Missouri Bar
  • Missouri Organization of Defense Lawyers
  • St. Louis County Bar Association

Law School Honors/Involvement

  • Tulane Maritime Law Journal
    • Managing Editor
  • Highest Grade in Constitutional Law: Freedoms of Speech and Press

Published Legal Writing

External Publications

  • “Rule 317, Appeal as a Matter of Right,” Illinois Bar Journal (May 2021). (This article can be read here.)
  • “Will the Proposed Amendments to the Biometric Information Privacy Act (BIPA) Be Retroactive?” Business Law Today (April 2021). (This article can be read here.)
  • “Litigation under the Biometric Information Privacy Act after Rosenbach: Still a Wild Ride,” Illinois Bar Journal (January 2020).
  • “How to Tackle Litigation under the Biometric Information Privacy Act,” The Computer and Internet Lawyer (December 2018).
  • “Understanding the Biometric Information Privacy Act Litigation Explosion,” Illinois Bar Journal (March 2018).

HeplerBroom Blog Posts

For a complete list of Published Legal Writing, click here.

Legal Lectures & Presentations

  • “Recent Significant Developments in Consumer Protection Law,” American Bar Association audio seminar (July 14, 2020). (co-presenter)
  • “Data Security and Privacy Issues Know No Borders,” 14th Annual Sedona Conference Institute: eDiscovery, Data Privacy, and Security (St. Louis MO, 2020). (Co-presenter)
  • “The Rise of Litigation Under Illinois’s Biometric Information Privacy Act,” HeplerBroom Employment Law Seminar (Edwardsville IL, 2017)
  • “Crafting a Cyberinsurance Policy,” HeplerBroom University (Edwardsville IL, 2017)
  • “Improving Your Legal Writing,” HeplerBroom University (Edwardsville IL, 2015; St. Louis MO, 2016).

Representative/Recent Case Results

  • Affirmed a jury verdict award in favor of a hog farming operation and obtained an attorneys’ fee award for the farming operation in a matter of first impression before the Fourth District Court of Appeals in Illinois.
  • Won a significant arbitration award for a private investor in a FINRA arbitration proceeding against a major brokerage firm and its registered representative. Confidential (2019)
  • Obtained affirmance of dismissal and obtained an attorneys’ fee award for pharmaceutical company against Fortune-50 food production company in breach of contract action before U.S. Court of Appeals for the Seventh Circuit.
  • Obtained dismissal on personal jurisdiction grounds for auto parts manufacturer in copyright and trademark infringement action in U.S. District Court for the Eastern District of Missouri.
  • Discovered the identity of anonymous Yahoo! email address associated with defamatory and disparaging emails in a Rule 224 action in Peoria County, Illinois.

For a complete list of Representative/Recent Case Results, click here


HeplerBroom is pleased to announce that its physical offices have reopened. While the health and safety of our clients, employees, and families, remain our top priority, HeplerBroom attorneys and staff are returning to our offices on full-time or modified schedules. Our offices are open to visitors and clients with scheduled appointments, with appropriate screening of visitors and social-distancing protocols. HeplerBroom will continue to follow CDC recommendations for cleaning and sanitizing.

We are very proud of the dedicated efforts of our attorneys and staff to provide great service and work product to our clients during the pandemic. This would not have been possible without the incredible support provided by the HeplerBroom IT Department and other essential personnel who supported our personnel and clients from the office locations while the rest of our teams worked remotely.

If you have questions about visiting our offices, please do not hesitate to contact us. We look forward to seeing you in person again in the near future.