William LaGrange represents financial institutions, international corporations, and high-net-worth individuals in complex commercial litigation, regulatory matters, and appeals. His practice spans high-stakes disputes involving private credit, hedge funds, investment managers, digital asset companies, major retailers, and participants in the art and entertainment markets.
William has extensive experience in complex commercial litigation, white collar defense and investigations, and alternative dispute resolution. He has supported clients in a range of matters spanning billion-dollar international criminal bribery investigations, fiduciary duty claims, lending discrimination, high-frequency trading violations, employment practices litigation, and breach of contract matters. He has appeared in federal and state courts across the country, often securing dismissals, favorable resolutions, or successful outcomes on appeal.
Credentials
Education
- Duke University School of Law, J.D.
- University of South Carolina, B.A., cum laude
Bar Admissions
- New York
Court Admissions
- U.S. Court of Appeals for the First Circuit
- U.S. Court of Appeals for the Second Circuit
- U.S. Court of Appeals for the Seventh Circuit
- U.S. District Court for the Eastern District of New York
- U.S. District Court for the Southern District of New York

