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Ashley (Lee) McMahon

Counsel | She/Her/Hers

Overview

When businesses and individuals face high-stakes antitrust issues, Ashley (Lee) McMahon delivers with confidence and competence. Lee’s broad practice covering complex civil and criminal litigation, government investigations, mergers and acquisitions, and premerger filings uniquely situates her to advise clients adeptly on all areas of competition law. 

Lee has represented clients in antitrust matters related to price fixing, bid rigging, exclusive dealing, and market allocation, with a growing focus on no-poach allegations and cartel investigations. She has represented clients before the Federal Trade Commission, the Department of Justice, and state attorneys general, as well as before international competition agencies such as the European Commission and South African Competition Commission. Lee assists clients with premerger notification, review, and analysis under the Hart-Scott-Rodino Antitrust Improvements Act. Her experience spans multiple industries, including aerospace and defense, telecommunications, manufacturing, technology, health care, and consumer products.

Lee has also developed her pro bono practice, where she has won immigration asylum for multiple clients. In law school, Lee won release from reincarceration for multiple clients before the U.S. Parole Commission as a law clerk for the Public Defender Service for the District of Columbia. She has interned for three public defender’s offices, in Washington; Charlottesville, Virginia; and New Orleans.

While in law school, Lee served as editor-in-chief of the Virginia Journal of Criminal Law and was involved with the Innocence Project Clinic and Public Interest Law Association. She credits her solid footing in the legal world to the nearly four years before law school she spent as a paralegal at a revered civil rights and criminal defense boutique firm in Boston. Most recently, Lee worked for four years in antitrust and competition at another global law firm in Washington, DC.

Career & Education

    • Connecticut College, B.A., magna cum laude, 2009
    • University of Virginia School of Law, J.D., 2016
    • Connecticut College, B.A., magna cum laude, 2009
    • University of Virginia School of Law, J.D., 2016
    • District of Columbia
    • Virginia
    • U.S. District Court for the District of Columbia
    • District of Columbia
    • Virginia
    • U.S. District Court for the District of Columbia
  • Professional Activities and Memberships

    • American Bar Association
      • Antitrust Section
    • Washington Council of Lawyers

    Professional Activities and Memberships

    • American Bar Association
      • Antitrust Section
    • Washington Council of Lawyers

Ashley (Lee)'s Insights

Client Alert | 6 min read | 05.16.25

Recent Antitrust Enforcer Statements Signal New Administration’s Direction and Priorities

Assistant Attorney General Gail Slater of the Department of Justice, and Chairman Andrew Ferguson and Commissioner Mark Meador of the Federal Trade Commission, have each looked to the history of conservative voices to chart a path forward for antitrust enforcement in the second Trump Administration. Within the last three weeks, AAG Slater delivered remarks to the University of Notre Dame Law School, Chairman Ferguson delivered remarks at the International Competition Network Annual Conference, and Commissioner Meador shared his policy aims in an FTC paper and a speech to George Washington University. The enforcers emphasized the need for robust antitrust enforcement to break private monopolies and other anticompetitive arrangements. These enforcers appear to align on priorities, though differing slightly in methods, grounding their rationale in what they describe as traditional conservative values, while at the same time distancing themselves from previous Republican administrations which have emphasized anti-cartel policies and an otherwise preference for limited intervention in markets....

Representative Matters

  • Represented a Japanese automotive parts manufacturer in In re Automotive Parts Antitrust Litigation, the multi-district litigation stemming from the largest criminal antitrust investigation in U.S. history” into cartel allegations.
  • Represented an aerospace and defense company in class action litigation stemming from a grand jury indictment alleging no-poach agreements.
  • Represented a major regional health care provider in class action litigation alleging no-poach agreements.
  • Represented client in a grand jury investigation alleging no-poach agreements.
  • Represented a multinational telecommunications company in the premerger filing and Second Request process of a billion-dollar sale of an anime streaming business.
  • Represented a private equity client in its acquisition of a billion-dollar aerospace & defense products and medical products manufacturer.
  • Represented a health care IT solutions company in an FTC investigation and follow-on class action litigation alleging exclusive dealing arrangements related to e-prescriptions.
  • Represented a mission critical communications enterprise as a third party in an FTC investigation in the law enforcement body-worn camera industry.
  • Represented a pharmaceutical manufacturer in multi-district litigation alleging price-fixing of generic drugs.

Ashley (Lee)'s Insights

Client Alert | 6 min read | 05.16.25

Recent Antitrust Enforcer Statements Signal New Administration’s Direction and Priorities

Assistant Attorney General Gail Slater of the Department of Justice, and Chairman Andrew Ferguson and Commissioner Mark Meador of the Federal Trade Commission, have each looked to the history of conservative voices to chart a path forward for antitrust enforcement in the second Trump Administration. Within the last three weeks, AAG Slater delivered remarks to the University of Notre Dame Law School, Chairman Ferguson delivered remarks at the International Competition Network Annual Conference, and Commissioner Meador shared his policy aims in an FTC paper and a speech to George Washington University. The enforcers emphasized the need for robust antitrust enforcement to break private monopolies and other anticompetitive arrangements. These enforcers appear to align on priorities, though differing slightly in methods, grounding their rationale in what they describe as traditional conservative values, while at the same time distancing themselves from previous Republican administrations which have emphasized anti-cartel policies and an otherwise preference for limited intervention in markets....

Ashley (Lee)'s Insights

Client Alert | 6 min read | 05.16.25

Recent Antitrust Enforcer Statements Signal New Administration’s Direction and Priorities

Assistant Attorney General Gail Slater of the Department of Justice, and Chairman Andrew Ferguson and Commissioner Mark Meador of the Federal Trade Commission, have each looked to the history of conservative voices to chart a path forward for antitrust enforcement in the second Trump Administration. Within the last three weeks, AAG Slater delivered remarks to the University of Notre Dame Law School, Chairman Ferguson delivered remarks at the International Competition Network Annual Conference, and Commissioner Meador shared his policy aims in an FTC paper and a speech to George Washington University. The enforcers emphasized the need for robust antitrust enforcement to break private monopolies and other anticompetitive arrangements. These enforcers appear to align on priorities, though differing slightly in methods, grounding their rationale in what they describe as traditional conservative values, while at the same time distancing themselves from previous Republican administrations which have emphasized anti-cartel policies and an otherwise preference for limited intervention in markets....