Sean is a member of the Casualty Department. He has experience litigating a wide range of general liability matters representing insureds, self-insureds, and corporations in cases involving motor vehicle negligence, products liability, personal injury, premises liability and warranty defense. Sean also has experience representing clients in the food and beverage industry involving food allergies, foreign objects, foodborne illness and contamination cases.
Prior to joining the firm, Sean worked as an associate with a firm in Ponte Vedra Beach, Florida where he defended manufacturers of boats, automobiles and recreational vehicles in warranty disputes, defended insurance companies and insureds in bodily injury and property claims as well as defended individuals in complex commercial litigation matters. He also practiced aviation law where he investigated aviation accidents and assisted clients and their families in lawsuits involving products liability and spoliation claims.
Sean completed his undergraduate studies at the University of West Florida and received his master's in business administration from Saint Leo University. Sean received his juris doctor from the University of Florida Levin College of Law.
Before attending law school, Sean worked for several years in the United States Army where he served as a helicopter pilot. He is admitted to practice in the state of Florida.
Honors & Awards
•The Best Lawyers: Ones to Watch, Product Liability Litigation - Defendants (2023-2026)
•The Best Lawyers: Ones to Watch, Personal Injury Litigation - Defendants (2024-2026)
•Florida Super Lawyers, Rising Stars (2025)
Results
Summary Judgment in Wrongful Death, Negligent Security Case Involving the Shooting of a 16-Year-Old
The plaintiff’s decedent was shot and killed while allegedly on his way home from school. We were able to prove that the young man was a trespasser on the common area of the property where he was shot, even though his aunt was a tenant in the apartment complex. The decedent’s family claimed he was on his way to see her. Our investigation revealed that he was connected to local gangs and that, at the time of his shooting, he was wearing a ski mask (in Florida) and carrying a hand gun.
News
98 Marshall Dennehey Attorneys Recognized in the 2026 Editions of The Best Lawyers in America and the Best Lawyers: Ones to Watch in America
August 20, 2025
Marshall Dennehey Celebrates 25th Anniversary of Advanced Trial Advocacy & Mock Trial Program
July 15, 2025