Niall H. MacMenamin

Executive Vice President

Los Angeles

Niall H. MacMenamin is an Executive Vice President with Compass Lexecon based in Los Angeles. He specializes in marketing, finance and statistics. He has testified as an expert witness and has supported academic experts in cases involving antitrust, class certification, false advertising, intellectual property, securities and finance, and valuation. His work has involved cases in federal and state courts, and in U.S. and international arbitration. Niall has developed economic and statistical models to assess alleged misconduct and damages on behalf of plaintiff and defense. He has a specialization in applying market research to his analyses, and has utilized survey research, including conjoint analysis, to assist with determination of materiality, perceptions, and damages attributable to a claim. His industry experience includes technology products, internet platforms, food and beverage, consumer products, and financial services. He has authored articles and presented to attorneys on proper application of damages theories, evaluation of liability using statistical methods, legal issues involving internet platforms, and estimating damages in class certification. Prior to joining Compass Lexecon, Niall was a Vice President at Analysis Group. He also held product manager roles at, an internet platform for business users, and, an insurance provider.

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