ALTON, Ill. — Simmons Hanly Conroy, one of the nation’s leading plaintiffs’ law firms, has been named a 2026 Illinois Regional Powerhouse by Law360. The legal business publication annually recognizes a select group of law firms for their impact on their state’s legal market and work on significant matters with broader regional and national implications.
Founded in Alton, Illinois, in 1999 as a seven-person asbestos litigation firm, Simmons Hanly Conroy has grown into one of the nation’s largest mass tort and complex litigation law firms, with more than 300 employees, including over 100 attorneys across seven offices. The firm’s largest concentration of attorneys remains in Alton, where more than 50 lawyers help direct high-stakes litigation across the country while continuing to secure significant results in Illinois courts.
“Being named a Law360 Illinois Regional Powerhouse is especially meaningful because Illinois is where Simmons Hanly Conroy began, and it remains at the heart of who we are as a firm,” said Managing Partner Laurence V. Nassif. “This recognition also reflects the extraordinary work of our entire team across the nation. Our lawyers, investigators, paralegals, researchers, and professionals work together every day to stand up for people and communities facing some of the most powerful interests in the country.”
Simmons Hanly Conroy attorneys serve in leadership roles in major multidistrict and mass tort litigation involving prescription opioids, environmental contamination, pharmaceuticals, consumer protection, sexual abuse, and other mass injury matters. At the core of the firm’s Illinois practice is its nationally recognized asbestos and toxic exposure litigation group. The Illinois team brings together trial lawyers, exposure-investigation attorneys, research and writing lawyers, appellate support, expert teams, and paralegals to prepare complex cases for trial.
From its Alton office, the firm has prosecuted asbestos cases in Illinois and across the country, while also serving as a hub for national mass tort and multidistrict litigation.
In 2026, Simmons Hanly Conroy reached a significant milestone in the firm’s continued advocacy for individuals and families, surpassing $12 billion secured on behalf of clients nationwide. For more than 27 years, the firm’s work has helped shape outcomes in cases involving mesothelioma and asbestos exposure, prescription opioids, toxic contamination, consumer fraud, dangerous pharmaceuticals and medical devices, corporate negligence, and personal injury.
