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Mark H. Rosenberg


(215) 561-2300
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Three Logan Square
1717 Arch Street
Suite 610
Philadelphia, PA 19103


J.D., Notre Dame Law School, 2000

  • Articles Editor, Notre Dame Law Review
  • Notre Dame Scholar

B.A., Government and English, University of Notre Dame, 1997


Best Lawyers in America® Ones to Watch distinction in Insurance Law (2023-2024)*


*No aspect of this advertisement has been approved by the Supreme Court of New Jersey. A description of the Best Lawyers selection methodologies can be found at:

Mark H. Rosenberg is an Associate in the Philadelphia office of GRSM and is a member of the Insurance practice group.

Mark’s practice focuses on advising and representing clients on insurance coverage, class action and bad faith matters. He assists insurers by providing coverage opinions, prosecuting and defending declaratory judgment actions, and defending insurers with regard to extra-contractual claims, including claims for bad faith. He negotiates and litigates disputes involving first- and third-party coverage matters ranging from property damage to complex personal accident and disability claims.

Mark has devoted his entire career to representing the insurance industry. He represents insurers in numerous jurisdictions throughout the U.S. and in alternative dispute forums, such as arbitrations and mediations.

Mark also has experience litigating matters involving a variety of other issues, including antitrust, construction defect, aviation liability, personal injury, and bankruptcy matters. He has extensive experience preparing dispositive motions and responses, preparing oppositions to class certification motions, preparing and responding to discovery requests, and taking and defending depositions.

Mark co-authored Extra-Contractual Litigation Against Insurers (Law Journal Press 2009), a treatise that provides a comprehensive view of numerous issues involved in litigating bad faith actions and other lawsuits seeking extra-contractual damages. He also assisted Lawyers for Civil Justice in preparing comments to the Civil Rules Advisory Committee of the U.S. Judicial Conference regarding proposed revisions to the Federal Rules of Civil Procedure on electronic discovery.


  • Pennsylvania
  • New Jersey


  • State Bar of Pennsylvania
  • Montgomery County Bar Association
  • American Bar Association
Publications & Presentations