Michael J. Sullivan


Michael is an accomplished commercial litigator, whose experience in handling matters across a wide variety of industries, jurisdictions, and claims enables him to guide his clients through the complex disputes they face in their businesses and personal lives with confidence and trust.

Michael represents clients in business-related litigation, including breach of contract, fraud, breach of fiduciary duty, business torts, shareholder disputes, and many others. He also represents commercial policyholders in disputes with their insurers. Michael has tried numerous cases in federal and state courts, and has experience in administrative and regulatory proceedings and in alternative dispute resolution venues.

Prior to joining Spiro Harrison & Nelson LLC, Michael was an attorney with Dechert LLP and Sills Cummis & Gross P.C.

  • Fordham University School of Law – J.D.
  • Loyola College – B.A., English
  • State Bars:
    • – New Jersey
    • – New York
  • United States Supreme Court
  • U.S. District Courts:​
    • – District of New Jersey
    • – Eastern District of New York
    • – Southern District of New York
Memberships & Associations
  • New Jersey State Bar Association
  • New York State Bar Association
  • Association of the Federal Bar of New Jersey
  • Monmouth County Bar Association
    • – Courthouse Facilities Committee
  • Fordham Law School Alumni Association
  • Christian Brothers Academy
    • – Alumni Association – Board of Trustees
Representative Matters
  • Seitz v. Rothermel, 638 B.R. 846 (E.D. Pa. 2022)