Michael J. Thomas

Keith A. Herman is a top attorney recognized by Best Lawyers in the practice area(s) of Closely Held Companies and Family Businesses Law and Trusts and Estates. Keith A., who practices law in St. Louis, Missouri, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Keith A. is held by other top lawyers in the same geographic and legal practice area.

Robert T. Haar is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice, Bet-the-Company Litigation, Commercial Litigation, Criminal Defense: White-Collar and Legal Malpractice Law - Defendants. Robert T., who practices law in St. Louis, Missouri, has been recognized since 2011. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Robert T. is held by other top lawyers in the same geographic and legal practice area.

Mark A. Prost is a top attorney recognized by Best Lawyers in the practice area(s) of Product Liability Litigation - Defendants. Mark A., who practices law in St. Louis, Missouri, has been recognized since 2016. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mark A. is held by other top lawyers in the same geographic and legal practice area.

Tom Clark serves as the firm's Chief Operating Officer and leads the firm’s St. Louis office. His expertise encompasses all aspects of employee benefits programs, including the design, implementation and compliance of retirement plans, health and welfare plans, and executive and incentive compensation arrangements. He also has a robust practice assisting covered service providers in meeting their ERISA compliance needs. Mr. Clark’s vast litigation experience complements the firm&r...

Melissa G. Nolan is a top attorney recognized by Best Lawyers in the practice area(s) of Trusts and Estates. Melissa G., who practices law in St. Louis, Missouri, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Melissa G. is held by other top lawyers in the same geographic and legal practice area.

John Kemppainen has more than 30 years of courtroom experience defending clients in Missouri and Illinois. He is AV-rated by Martindale-Hubbell, recognized as a Missouri Super Lawyer, and has been named one of the Top Lawyers in Missouri by the St. Louis Post Dispatch . His practice includes personal injury, products liability, wrongful death, class actions, and toxic torts, with clients ranging from insurers and corporations to municipalities and individuals. He also serves as National Coord...

Mayer S. Klein is a top attorney recognized by Best Lawyers in the practice area(s) of Closely Held Companies and Family Businesses Law and Litigation - Real Estate. Mayer S., who practices law in Clayton, Missouri, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mayer S. is held by other top lawyers in the same geographic and legal practice area.

Teneil Kellerman is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs. Teneil, who practices law in St. Louis, Missouri, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Teneil is held by other top lawyers in the same geographic and legal practice area.

Betty Schaefer draws on not only her significant knowledge of the St. Louis County Probate Division, where she served as legal counsel, but also her considerable experience in private practice to craft arguments that resonate in probate court. Her deep understanding of the probate and trust codes allows her to guide clients through administration and disputes with efficiency and precision. Betty assists clients with estate and trust administration, trust funding, guardianships, and estate pla...

Adam D. Hirtz is a principal and the office litigation manager in the St. Louis, Missouri, office of Jackson Lewis P.C. He prides himself on being a responsive, strategic and creative advocate and counselor for the firm’s clients. Adam has more than 25 years of experience as a trial attorney representing businesses in employment litigation in both state and federal courts throughout the country. He also acts as a mediator, including regularly mediating cases for the Equal Employment Opp...