Kenneth John Brennan - St. Louis, MO
Attorney at TorHoerman Law, LLC
Mass Torts Lawyers in St. Louis, MO
100 S 4th St Suite 550 - #197 St. Louis, MO 63102
- Free Consultation
- 1 Super Lawyers®
-
30
Years
Experience
St. Louis Mass Torts Lawyer
Updated: 03/10/2026
Areas of Practice
- Mass Torts
Litigation: 100%
Attorney Information
Overview
Since 2009, Kenneth Brennan has been a valuable asset to our team of attorneys at TorHoerman Law.
Ken Brennan is an accomplished trial lawyer with over 20 years of experience in courtrooms throughout the United States.
Professional Career
Upon graduation from the University of Iowa College of Law, Ken began his career at a defense firm in St. Louis, Missouri.
After six years of defending large corporations against “the little guy”, Ken determined he wanted to help those same individuals he was once opposing.
That decision resulted in a passion for helping those injured through no fault of their own, and 20+ years later, Ken has become a highly-skilled, distinguished Plaintiffs lawyer.
Ken’s extensive experience on both sides of the courtroom has given him a broad range of practical knowledge and understanding required to address the complex technical and legal issues that arise in mass tort litigations.
Ken is proud to have taken on some of the largest industries in the world – including the pharmaceutical, communications, auto, banking, and insurance industries.
In 2017, Ken obtained an important personal jurisdiction decision from the Illinois Appellate Court.
In another notable case, the court praised Ken for his efforts to overturn an ERISA Plan’s decades-long misinterpretation of its disability pension requirements.
According to the order, “the public interest has been significantly advanced by the counsel’s efforts.”
Prior to concentrating on mass tort cases, Ken had a successful career representing individual consumers, small businesses, multinational corporations, franchisors, and franchisees.
Notable Cases & Results
Rinder v. Merck Sharp & Dohme Corp., 2019 IL App (1st) 171969 – Successfully argued and won an issue of first impression in Illinois regarding whether a state-law failure to warn claim issue is a question for the judge or jury.
Minor M.M. ex rel. Meyers v. GlaxoSmithKline LLC, 61 N.E.3d 1026 (Ill. App. 1st Dist. 2016) – Successfully argued and won an issue of first impression in Illinois regarding personal jurisdiction.
Lead Counsel for Plaintiffs in hundreds of radiation exposure cases pending in the United States District Court for the Eastern District of Missouri arising from the Manhattan-Project-era releases of ionizing radiation into North St. Louis County.
Awards and Honors
Honors
- Super Lawyers, 2012, 2015-2021
Other Sources of Feedback About Kenneth John Brennan
Included on the 2026 Illinois Super Lawyers list
Past Lists
- 2025 Illinois Super Lawyers list
- 2024 Illinois Super Lawyers list
- 2023 Illinois Super Lawyers list
- 2022 Illinois Super Lawyers list
- 2021 Illinois Super Lawyers list
- 2020 Illinois Super Lawyers list
- 2019 Illinois Super Lawyers list
- 2018 Illinois Super Lawyers list
- 2017 Illinois Super Lawyers list
- 2016 Illinois Super Lawyers list
- 2015 Illinois Super Lawyers list
- 2012 Illinois Super Lawyers list
Education
-
Legal Education
-
University of Iowa College of Law,
Iowa City,
Iowa
J.D.
Honors: With Honors
Law Review: Iowa Law Review, Articles Editor, 1995 - 1996
-
University of Iowa College of Law,
Iowa City,
Iowa
-
Non Legal Education
-
University of Missouri - Saint Louis,
Saint Louis,
Missouri,
United States America, 1993
B.A.
Honors: magna cum laude
Honors: High Honors
Major: English and Philosophy
-
University of Missouri - Saint Louis,
Saint Louis,
Missouri,
United States America, 1993
Current Employment Position(s)
-
Attorney Partner
Past Positions
- Sandberg, Phoenix & von Gontard, Associate, 1997 - 2004
- SimmonsCooper, Partner, 2005 - 2008
Classes and Seminars
- Personal Jurisdiction, Madison County Bar Association CLE, June 22, 2018
Representative Cases
-
Rinder v. Merck Sharp & Dohme Corp., 2019 IL App (1st) 171969
-
Minor M.M. ex rel. Meyers v. GlaxoSmithKline LLC, 61 N.E.3d 1026 (Ill. App. 1st Dist. 2016)
Bar Admissions
- Missouri, 1996
- Illinois, 1997
- U.S. Court of Appeals 6th Circuit
- U.S. Court of Appeals 7th Circuit
- U.S. Court of Appeals 8th Circuit
- U.S. District Court Northern District of Illinois
- U.S. District Court Southern District of Illinois
- U.S. District Court Eastern District of Missouri
Other Affiliations
- National Employment Law Association (NELA) (Member)
- National Association of Consumer Advocates, 2008 - 2010 (Member)
- The American Association for Justice (AAJ)
- The American Bar Association
- The Federal Bar Association Southern District of Illinois Chapter
- Illinois Trial Lawyers Association
- The Bar Association of Metropolitan St. Louis (BAMSL)
- The Madison County Bar Association
- The St. Clair County Bar Association
- The Injury Board
Photo
Contact
100 S 4th St
Suite 550 - #197
St. Louis, MO 63102
Phone: 618-300-0986
Fax: 618-656-4401
Email: Send a message
Website: https://www.torhoermanlaw.com/
Hours: 8 AM - 5 PM
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