William B. Federman

William B. Federman is the founder and managing partner of Federman & Sherwood, bringing over four decades of litigation and appellate experience. He leads national cases in data breach litigation, securities law, shareholder derivative actions, and complex class action lawsuits across federal and state courts.

Mr. Federman earned his Juris Doctor from the University of Tulsa in 1982 and holds a B.A. from Boston University, where he graduated cum laude. He is admitted to practice in Oklahoma, Texas, New York, the District of Columbia, and numerous federal courts, including the U.S. Supreme Court and multiple U.S. Courts of Appeals.

Throughout his career, Mr. Federman has served as lead or co-lead counsel in hundreds of class action cases, securing over $100 million for his clients. His practice is focused on protecting consumer rights, investor interests, and data privacy through strategic, high-impact litigation.

Known for his high ethical standards and legal skill, Mr. Federman has received the AV Preeminent rating from Martindale-Hubbell. He has spoken extensively at legal conferences, including events hosted by the American Bar Association, Oklahoma Bar Association, and Houston Bar Association. He has also contributed to numerous legal publications on corporate litigation, arbitration, and ethical practice.

Mr. Federman’s honors include “Securities Litigation and Arbitration Law Firm of the Year in Oklahoma” and recognition as an Oklahoma Super Lawyer. He is a member of the Litigation Counsel of America and has served on ethics and professionalism committees within the Oklahoma legal community.

With a reputation for leadership and results, William B. Federman continues to advance complex litigation on behalf of clients nationwide, holding corporations accountable and upholding legal protections for investors and consumers alike.

Law Office Affiliations

• Founder and Managing Partner, Federman & Sherwood
• Member, Oklahoma Bar Association
• Member, State Bar of Texas
• Member, New York State Bar Association
• Member, American Bar Association
• Member, Defense Research Institute, Securities Industry Association, Law and Compliance Division
• Member, New York Stock Exchange, Arbitration Panel (1985)
• Member, Oklahoma County Bar Association, Committee on Professionalism (1987-1990)
• Barrister, American Inns of Court (1990-1993)
• Member, Oklahoma Bar Association, Rules of Professional Conduct Committee (2020)
• Fellow, Litigation Counsel of America

Licensed State

• Oklahoma
• Texas
• New York

Education

• University of Tulsa
  Juris Doctor (JD)
• Boston University
  Bachelor of Arts (BA)

Awards & Badges