Michael A. Kosner

Michael A. Kosner is a founding partner of Gallagher & Kosner Law, LLC. His practice focuses on medical malpractice, catastrophic injury, sexual abuse, and social services negligence matters. With more than 25 years of experience, he has represented individuals and families in complex litigation involving serious injuries, wrongful death, and institutional negligence claims.

Michael earned his J.D. from the University of Miami in 1997 and his B.S. from the University of Kansas in 1994. His education helped build a strong foundation in litigation and trial advocacy. He has handled highly technical cases involving medical issues, catastrophic injuries, negligence claims, and institutional accountability matters.

Michael has recovered more than $350 million in settlements and verdicts during his legal career. His work includes many record-setting results in medical malpractice, wrongful death, and social services negligence cases. In 2025 alone, he obtained more than $75 million in verdicts over four trials involving catastrophic injuries and wrongful death claims.

Michael has secured major verdicts and settlements in courts across Illinois and other states. His results include multimillion-dollar recoveries in cases involving medical negligence, trucking accidents, wrongful death, abuse, neglect, and catastrophic injuries. He is known for careful preparation, strong courtroom advocacy, and a results-driven approach to complex litigation matters.

Michael’s background includes extensive work involving foster care abuse, child neglect, and institutional negligence claims tied to social services agencies and contractors. He has also represented victims in personal injury, medical malpractice, and trucking negligence matters. His practice reflects a strong commitment to holding individuals and organizations accountable for serious harm.

Michael A. Kosner is admitted to practice law in Illinois and Florida. He is also a member of the Illinois Bar Association. His legal work focuses on helping clients and families facing difficult circumstances involving catastrophic injuries, negligence, abuse, and wrongful death claims through careful litigation strategy and trial preparation.

Law Office Affiliations

• Founding Partner, Gallagher & Kosner Law, LLC
• Member, Illinois Bar Association
• Member, Florida Bar

Licensed State

• Illinois
• Florida

Education

• University of Miami
  Juris Doctor (JD)
• University of Kansas
  Bachelor of Science (BS)

Awards & Badges