News & Events

Gary Samms, one of the Philadelphia region’s premier medical malpractice trial attorneys, has moved to Marshall Dennehey, bringing with him members of his litigation group from Obermayer Rebmann Maxwell & Hippel.

Marshall Dennehey is proud to announce the expansion of its Florida Workers’ Compensation practice with the addition of Blake J. Hood, who joins the firm’s Jacksonville office as a shareholder. Hood was previously a partner at a regional insurance defense firm in Jacksonville.

Stuart H. Sostmann, shareholder and co-chair of Marshall Dennehey’s Construction Injury Litigation Practice Group, has been named Managing Attorney of the the firm’s Pittsburgh office. He inherits the position from Scott G. Dunlop who served in the role for almost 30 years and will retire at the end of the year. Sostmann has served as Assistant Managing Attorney of the Pittsburgh office since 2023.

Marshall Dennehey is proud to highlight the firm’s 109 attorneys who have been recognized in the 2025 editions of The Best Lawyers in America® and the Best Lawyers: Ones to Watch® in America. Less than 6% of all practicing lawyers in the U.S. were selected by their peers for this recognition.

Additionally, five of the firm’s attorneys received the Best Lawyers® 2025 “Lawyer of the Year” awards in their respective practice areas and demographic regions. 

Veteran litigator Matthew K. Flanagan has joined Marshall Dennehey as a Shareholder and Co-Chair of the firm’s Disciplinary Board Representation Practice Group, joining Josh J.T. Byrne in leading the practice. He will divide his time between the firm’s Long Island (Melville) and New York City offices. Previously, he was a Partner at Catalano Gallardo & Petropoulos, LLP in Jericho, NY.  

Teresa O. Sirianni, shareholder in the Professional Liability Department in the Pittsburgh office of Marshall Dennehey, has been elected to membership of the Academy of Trial Lawyers of Allegheny County.