About
Marshall R. King is an experienced litigator who has built a reputation for resolving high-stakes disputes with skill and precision. Over his distinguished career, he has represented global financial institutions, corporations, and investors in complex commercial and securities litigation, class actions, and bankruptcy-related disputes. His approach emphasizes strategic analysis and effective advocacy across every stage of litigation.
Marshall earned his Bachelor of Arts degree with high honors in Economics from Princeton University in 1988, followed by his Juris Doctor cum laude from Harvard Law School in 1991. His academic excellence provided a strong foundation for his career in litigation, where his understanding of both economic principles and legal frameworks enables him to craft persuasive and results-driven arguments for his clients.
Marshall has been recognized in The Best Lawyers in America® for Commercial Litigation (2024–2026). His notable work includes defending UBS in claims connected to the Madoff Ponzi scheme, securing the dismissal of multibillion-dollar allegations. He has also represented financial institutions such as Bank of America in major regulatory disputes and defended clients in Securities and Exchange Commission enforcement actions involving unregistered dealer claims. His broad experience includes representing parties in mergers and acquisitions disputes, fraud and misrepresentation claims, and bankruptcy litigation for large corporations like Mesquite Energy, Inc.
Marshall R. King continues to set the standard for excellence in commercial and securities litigation through his unwavering dedication to his clients and the legal profession. Marshall has also demonstrated exceptional skill in courtroom advocacy, achieving favorable jury verdicts such as his successful defense of Artémis in litigation linked to the rehabilitation of Executive Life Insurance Company—an outcome recognized among the Daily Journal’s Top Defense Verdicts of the year. Beyond his practice, he serves as Vice Chair of the Board of Legal Services NYC, advancing access to justice for underserved communities.
Law Office Affiliations
- Partner, Gibson, Dunn & Crutcher LLP
- Member, New Jersey State Bar Association
- Member, New York State Bar Association
Licensed State
- New Jersey
- New York
Education
- Harvard University
Juris Doctor (JD) - Princeton University
BA in Economics with Cum Laude
Awards & Badges


- Mergers & Acquisitions
- Securities Litigation
- Appeals
- Class Action
- Litigation
- Constitutional




