DeMario Carswell

DeMario Carswell

DeMario Carswell
Washington, DC
+1 202 346 4153

DeMario Carswell is a senior associate in Goodwin’s Complex Litigation & Dispute Resolution, ERISA Litigation and Financial Services Litigation practices. He counsels and represents fiduciaries, plan sponsors, benefit plan service providers and trustees in all phases of complex ERISA litigation and ERISA compliance, in connection with employer-sponsored benefit plans, including defined contribution plans, employee stock ownership plans (ESOPs), insurance products and other benefit plans. DeMario also represents clients in regulatory investigations and enforcement proceedings, including with the Department of Labor.

Additionally, DeMario provides guidance to fiduciaries as to their fiduciary responsibilities and obligations under ERISA. He advises clients in proactively developing litigation risk mitigation strategies for ERISA benefit plans and their service providers.


Prior to joining Goodwin, DeMario served as ERISA counsel at M&T Bank and its subsidiary, Wilmington Trust. In his prior role, he focused on managing ERISA litigation and regulatory matters across the country, as well as providing counsel to various business lines and fiduciary committees on a variety of ERISA issues. His in-house experience has provided him with a unique view and insight on the day-to-day issues that impact his clients and how to position them best for success.

Prior to that, DeMario was a Litigation Associate in the Financial Services Department at a national law firm, where he represented national, regional, and local financial institutions in various areas of commercial litigation.

Professional Activities

DeMario is a member of the New York State Bar Association, D.C. Bar, and Illinois State Bar Association. He serves on The ESOP Association’s (TEA) advisory committee on Fiduciary Issues. He formerly served as a board member of the National Federation for Just Communities.

DeMario’s pro bono experience includes representing 501c3 organizations in litigation related disputes, representing prisoners in cases involving civil rights violations, and assisting clients with immigration related issues.




University of Illinois College of Law


State University of New York College at Buffalo



  • District of Columbia
  • New York
  • Illinois


  • U.S. District Court for the Southern District of New York
  • U.S. District Court for the Southern District of Illinois
  • U.S. District Court for the Eastern District of Missouri
  • U.S. Court of Appeals for the Eighth Circuit
  • U.S. Court of Appeals for the Eleventh Circuit

Recognition & Awards

DeMario was recognized in Best Lawyers 2024 Ones to Watch for Banking and Finance Law and has been selected for inclusion in Legal 500 US 2022.


DeMario’s recent publications and speaking engagements include: