Thomas A. Ryan

A leading environmental attorney at Lathrop Gage, Tom Ryan has spent a considerable portion of his time defending chemical exposure toxic tort litigation, including class actions. These cases have included alleged damage to plaintiff's immune systems, pulmonary systems and other personal injuries. He has experience in Superfund issues including contribution, indemnity, transporter liability and allocation. In addition, he represents policyholders in environmental insurance coverage litigation in various states. Tom also has twenty years of experience in personal injury litigation, representing railroad and manufacturing companies in a wide variety of cases. A few examples of his representations include:

  • Represents a major railroad in various Superfund matters in the Midwest.
  • Served as Missouri and Kansas counsel for one of the major manufacturers of asbestos-containing products. He tried a property damage case to a jury in federal district court in Kansas resulting in one of only a handful of defense verdicts for this type of litigation.
  • Served as Missouri counsel for one of the manufacturers in "fen phen" litigation.
  • Represented a major chemical company in class action litigation arising out of a plant in central Missouri.
  • Represents a waste transporter and landowner in numerous major Superfund cases at sites throughout the United States.
  • Represents insureds seeking coverage for costs and other damages incurred in connection with CERCLA sites around the country.
  • Represent a number of clients in proceedings before the Missouri Department of Natural Resources (MDNR) and the Kansas Department of Health and Environment (KDHE).

Court Memberships

  • Missouri
  • U.S. District Court for the Western District of Missouri


  • Chambers USA, Missouri Environmental, 2019, Band 2
  • The Best Lawyers in America®, 2010-2020
  • The Best Lawyers in America®, Lawyer of the Year Litigation-Environmental, 2017
  • Chambers USA, "Leading Lawyer”, 2009-2018
  • Missouri/Kansas Super Lawyers, 2007-2010 and 2013-2018
  • KVC Health Systems' 40 Everyday Heroes, 2010
  • Martindale-Hubbell® "AV" Rating

Professional Affiliations

  • Adjunct Professor, UMKC School of Law, CERCLA/Negotiating
    Superfund Settlements, 2018
  • American Bar Association, Torts & Insurance Practice Section; Natural Resources, Energy and Environmental Law Section
  • The Missouri Bar
  • Kansas City Metropolitan Bar Association, Environmental Law Committee
  • Lawyers' Association of Kansas City
  • Missouri Organization of Defense Lawyers
  • Insurance Information Counsel
  • Prime Health Foundation, Board of Directors, 1988-present
  • Heart of America Dartmouth Club, Former President
  • National Institute of Trial Advocacy


  • Speaker, Negotiating Superfund Settlements, University of Missouri-Kansas City School of Law, Kansas City, MO, 2018

Press releases

Photo of Thomas A. Ryan
F: 816.292.2001


Denise Forrester


University of Virginia School of Law, J.D., 1982

Dartmouth College, A.B., cum laude, 1979