Geoffrey M. Sigler

Gibson, Dunn & Crutcher LLP

GEOFFREY M. SIGLER is a partner in Gibson, Dunn & Crutcher's Washington, D.C. office. He practices in the firm's Litigation Department, and he is a member of the Firm’s Class Action, Health Care, and Insurance Practice Groups. Mr. Sigler has represented corporate clients in dozens of class actions and other complex litigation matters in federal and state courts throughout the United States. Mr. Sigler has obtained dismissal, summary judgment, and denial of class certification in cases involving a broad range of legal theories, including RICO, ERISA, the Sherman Act, and various state-law theories. In recognition of Mr. Sigler’s repeated “successes in high-stakes litigation,” he was named by Law 360 as an MVP – one of five “elite” attorneys for the health care industry – in 2014. Mr. Sigler also was recognized by Law 360 in 2013 as a “Rising Star,” based on his “string of high-profile wins” for the insurance industry. Mr. Sigler also has represented corporate clients, audit committees, and individuals in governmental and internal investigations. Mr. Sigler has successfully resolved investigations by the United States Department of Justice, the Securities and Exchange Commission, state attorneys general, and other federal and state regulators. Mr. Sigler graduated from the University of Virginia School of Law in 2001, where he was Articles Development Editor of the Virginia Journal of Social Policy and the Law. He received his Bachelor of Arts degree magna cum laude from the University of Richmond in 1998. Mr. Sigler is a member of the bars of the District of Columbia and Virginia.