Brent Sumner Helping Injury Victims Across Missouri and Illinois

When people suffer serious injuries in car accidents, commercial truck crashes, or other catastrophic incidents, choosing the right attorney can make a significant difference in the outcome of their case. In both Missouri and Illinois, attorney Brent Sumner has established a reputation as an experienced personal injury attorney dedicated to helping injured individuals and families pursue justice after life-changing accidents.

Brent Sumner is the managing partner of Sumner Law Group, LLC, based in Clayton, Missouri. Licensed to practice law in both Missouri and Illinois, he focuses his practice on representing victims of negligence in claims involving car accidents, commercial truck collisions, wrongful death, medical malpractice, and product liability. Throughout his legal career, he has recovered tens of millions of dollars for clients through settlements and jury verdicts, helping families secure compensation for medical expenses, lost income, and long-term care.

A Proven Trial Lawyer

One of the defining characteristics of Brent Sumner’s legal practice is his willingness to take cases to trial when insurance companies fail to offer fair compensation. While many personal injury claims settle before reaching the courtroom, insurance companies often evaluate whether an attorney has the experience and determination to present a case before a jury. Brent has built a reputation for preparing every case as though it will ultimately go to trial, giving his clients a stronger position during negotiations and litigation.

His courtroom success reflects that preparation. Among his notable results is a $25 million jury verdict for a client who was assaulted in a restaurant. He also secured a $14.2 million verdict in a motorcycle accident case involving a traumatic brain injury and obtained a $6 million wrongful death settlement arising from a commercial truck crash. Additional verdicts include a $650,000 recovery in a distracted driving automobile accident case and a $506,000 jury verdict in a medical malpractice lawsuit. These outcomes demonstrate his ability to handle complex personal injury cases involving substantial damages.

Experience With Commercial Truck Accident Cases

Commercial truck accident litigation has become an important part of Brent’s practice. Unlike standard automobile collisions, trucking cases often involve multiple parties, including trucking companies, contractors, maintenance providers, and corporate insurers. These cases may also require knowledge of federal transportation regulations, commercial safety standards, and corporate hiring practices.

Brent has represented clients injured in crashes involving tractor-trailers, delivery trucks, and other commercial vehicles. His experience includes cases involving companies that rely on major delivery networks, including Amazon, UPS, FedEx, Walmart, and Target. As e-commerce continues to grow, so has the number of commercial vehicles on the road, making these cases increasingly complex.

One notable wrongful death case involved a FedEx delivery driver, where Brent successfully pursued claims that resulted in a confidential settlement. His approach to these cases includes investigating corporate policies, driver qualifications, maintenance records, and safety procedures to determine whether negligence contributed to the accident.

Recognition Within the Legal Profession

Brent Sumner’s legal work has earned recognition from several respected organizations. Since 2021, he has consistently received honors from attorney rating organizations for his work in personal injury litigation.

In 2025, Super Lawyers recognized him as one of the Top 50 Personal Injury Trial Lawyers in St. Louis. In 2026, Best Lawyers recognized him for Personal Injury Litigation, Medical Malpractice Law, and Product Liability Litigation, while also naming him among its Top 100 Lawyers.

His additional professional honors include an AV Preeminent rating from Martindale-Hubbell, membership in the Million Dollar Advocates Forum and Multi-Million Dollar Advocates Forum, and recognition by The National Trial Lawyers Top 100 Trial Lawyers. While awards cannot guarantee future results, they reflect the respect Brent has earned from fellow attorneys, judges, and clients.

Education and Professional Background

Before beginning his legal career, Brent earned a Bachelor of Science degree in Biochemistry from the University of Missouri-Columbia in 2002. He later received his Juris Doctor from Saint Louis University School of Law in 2006, where he also earned a Certificate in Health Law.

His scientific background provides an advantage when handling cases involving medical evidence, accident reconstruction, traumatic injuries, and technical expert testimony. Brent is admitted to practice in Missouri, Illinois, and several federal courts in both states. He also serves on the Board of the Missouri Association of Trial Attorneys, supporting the advancement of trial advocacy throughout the region.

Commitment Beyond the Courtroom

Outside his legal practice, Brent remains actively involved in organizations that support education and healthcare. He serves on the Board of the Ladue Education Foundation, helping provide educational opportunities for students in the Ladue School District.

He is also involved with Cardinal Glennon Children’s Hospital through the Glennon Gallop Committee, supporting fundraising efforts that benefit pediatric healthcare. His community involvement reflects a commitment to serving others beyond his work as a trial attorney.

A Reputation Built on Results and Client Advocacy

Serious accidents often leave victims facing overwhelming medical bills, lost wages, emotional trauma, and uncertainty about the future. Brent Sumner has built his practice around helping injured individuals navigate these challenges while pursuing the compensation they deserve.

His record of significant verdicts and settlements, combined with extensive courtroom experience and a client-focused approach, has earned him the trust of clients throughout Missouri and Illinois. Other law firms have also turned to Brent to serve as trial counsel in some of their most challenging personal injury cases.

For individuals seeking experienced legal representation after a serious car accident, commercial truck collision, wrongful death claim, medical malpractice incident, or catastrophic injury, Brent Sumner continues to be recognized as a respected advocate committed to protecting the rights of injury victims and their families.