Thomas P. Hohenstein

John Simmons founded the firm in 1999 with seven employees and a focus on asbestos litigation. Under his leadership, the firm has expanded to more than 250 employees, including more than 80 attorneys, spread between five offices in Alton, St. Louis, New York, San Francisco and Los Angeles. John has overseen some of the biggest verdicts and settlements in the history of asbestos litigation. The firm’s first trial involved a roofer and former Shell Oil employee diagnosed with mesothelioma...

John Comerford handles all phases of complex, high-exposure business litigation, employment discrimination defense and corporate internal investigations. He represents and counsels Fortune 500 companies, senior-level executives and government employees. John is a first chair trial lawyer. He tries cases to verdict in state and federal courts and through any appeals. His clients include major electronic equipment suppliers, healthcare providers, large retailers, energy companies, and business ...

Mark R. Sanders is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Litigation - Trusts and Estates. Mark R., 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 Mark R. is held by other top lawyers in the same geographic and legal practice area.

A former federal prosecutor with extensive investigation and first chair trial experience, Michelle Nasser focuses her practice on white collar criminal defense, internal and government investigations, and complex litigation. Before joining the firm, Michelle served for more than 13 years as an assistant U.S. attorney in the Major Case, Financial Crimes, General Crimes, and Violent Crimes sections of the U.S. Attorney’s Office in Chicago. She led and supervised government investigations...

David L. Schenberg is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Labor and Employment. David L., 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 David L. is held by other top lawyers in the same geographic and legal practice area.

Shareholder Amy Garrett brings more than 22 years of litigation experience to her leadership role as Assistant Managing Partner at Simmons Hanly Conroy. She has developed a fierce reputation for protecting the rights of her asbestos and complex litigation clients both in and out of the courtroom. “I have a genuine interest in every person’s story and feel like it’s my job to give our clients the power to fight for themselves and their families,” Amy said. During Amy&rs...

Mara J. Lahnar is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law. Mara J., who practices law in St. Louis, Missouri, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mara J. 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.

Patricia J. Martin is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Labor and Employment. Patricia J., who practices law in Clayton, Missouri, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Patricia J. is held by other top lawyers in the same geographic and legal practice area.

Margaret L. Fowler is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law, Litigation - Insurance and Litigation - Labor and Employment. Margaret L., who practices law in St. Louis, Missouri, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Margaret L. is held by other top lawyers in the same geographic and legal practice area.