Dr. James Langenfeld is a managing director at BRG, based in Washington, DC. He provides economic analyses and expert testimony for litigation, regulatory actions, and economic policy in a wide variety of industries.

This work involves types of matters including antitrust, damages, class actions, labor, mergers, statistical analyses, and regulation’s impact on firms and consumers. He also serves on the editorial board of several professional journals and has published numerous articles in journals and books on diverse topics in applied economics and econometrics.

As the Director of Global Development, Mr. Keyte plays a lead role in growing Brattle’s antitrust practice and defining a new level of quality for economic consulting.

His extensive practical experience, along with his deep antitrust expertise, gives Brattle a competitive advantage in producing top quality expert work product across all competition subject areas. Mr. Keyte is directly engaged in marketing, training, and quality review across all of Brattle’s competition and antitrust engagements both in the US and globally.

Sarah’s practice focuses on complex litigation including antitrust, financial services, and commercial disputes.

Sarah LaFreniere is a partner at the law firm Hausfeld LLP, where she works out of their Washington D.C. office. Sarah’s practice is focused on complex litigation, primarily antitrust and commercial disputes. She has particular expertise in claims under Section 2 of the Sherman Antitrust Act, where she represents nascent and small businesses in their claims against alleged monopolists, including most recently, against Meta Platforms, Inc. Sarah’s practice brings her to the forefront of e-discovery where she has been at the helm of some of the most hard-fought discovery disputes on behalf of direct purchasers in antitrust class actions. Her tenacious but pragmatic approach to dispute resolution has earned her respect from counsel on both sides of the “v.” Sarah’s experience spans a wide range of complex litigation, and her efforts have helped clients recover more than $2.3 billion in settlements.

Bill Kolasky is a partner in the Washington, DC, office of Hughes Hubbard & Reed. Specializing in antitrust, Bill has over 40 years of experience representing clients in antitrust litigation, including in major antitrust class actions in industries as varied as insurance, financial services, media, telecommunications, and wood pallets. In 2013, he received the Global Competition Review’s Lifetime Achievement Award for his accomplishments in private practice, government service, and antitrust scholarship.