Mary K. Treanor

Tel 215.864.8131
Fax 215.864.8999

Mary K. Treanor is an associate in the Litigation Department. Mary focuses her practice on white collar matters and complex commercial litigation. She advises clients on Bank Secrecy Act and Anti-Money Laundering matters, including government and internal investigations. She also counsels financial institutions on Suspicious Activity Report filings and confidentiality requirements. Prior to joining Ballard Spahr, Mary worked for a Washington, D.C. law firm representing clients in market manipulation and failure to supervise enforcement actions brought by the CFTC and FERC. She also advised financial institutions on compliance with the Dodd-Frank Act and corresponding agency regulations.

Mary is a contributor to Money Laundering Watch, Ballard Spahr's blog focused exclusively on money laundering issues.

Mary also served as a judicial extern for the Eastern District of Missouri and, prior to law school, as a paralegal for the U.S. Attorney's Office for the District of Columbia.

Professional Activities

Member of Ballard Spahr's Hiring and Summer Associate Committees

Recognition & Accomplishments

Award Recipient for Best Oral Argument in Wiley Rutledge Moot Court Competition


Co-author, "Money Laundering Watch: 2018 Year in Review," Ballard Spahr alert, January 2, 2019

Co-author, "Supreme Court Forecloses Reimbursement for Certain Internal Investigations Under Mandatory Victims Restitution Act," Law Journal Newsletters, November 2018

Washington University School of Law (J.D. 2014, cum laude)
Executive Notes and Projects Editor, Washington University Journal of Law and Policy

College of the Holy Cross (B.A. 2008)