Photo of Warren Postman

Warren Postman

Managing Partner, Keller Postman

202-918-1870wdp@kellerpostman.com

1101 Connecticut Avenue, N.W.
Suite 1100
Washington, D.C. 20036

View Firm Biography

Warren Postman is the managing Partner of Keller Postman LLC. He combines a deep understanding of the civil litigation system with broad substantive expertise to solve complex litigation challenges for the firm's clients.

Postman has helped build Keller Postman’s arbitration practice, which devotes unparalleled resources to resolving the claims of consumers and employees who are subject to forced arbitration clauses. The firm’s commitment to arbitration allows it to aggressively pursue individual arbitrations for tens of thousands of clients simultaneously and has left defendants “scared to death.” Postman has won numerous precedent-setting victories requiring defendants to comply with their obligation to arbitrate under agreements they drafted.

Lawdragon Honors

Honor Year Practice
The 2026 Lawdragon 500 Leading Plaintiff Financial Lawyers 2026 Commercial Litigation, Antitrust & Arbitration
The 2026 Lawdragon 500 Leading Plaintiff Consumer Lawyers 2026 Consumer Litigation, Mass Arbitration
The 2026 Lawdragon 500 Leading Lawyers in America 2026 Plaintiff Financial Litigation
The 2026 Lawdragon 500 Leading Litigators in America 2026 Mass Arbitration, Class Action, Plaintiff
The 2025 Lawdragon 500 Leading Plaintiff Financial Lawyers 2025 Commercial Litigation, Antitrust & Arbitration
The 2025 Lawdragon 500 Leading Plaintiff Consumer Lawyers 2025 Consumer Litigation, Mass Arbitration
The 2025 Lawdragon 500 Leading Lawyers in America 2025 Plaintiff Financial Litigation
The 2025 Lawdragon 500 Leading Litigators in America 2025 Mass Arbitration, Class Actionn, Plaintiff
The 2024 Lawdragon 500 Leading Plaintiff Financial Lawyers 2024 Commercial Litigation, Antitrust & Arbitration
The 2024 Lawdragon 500 Leading Plaintiff Consumer Lawyers 2024
The 2024 Lawdragon 500 Leading Lawyers in America 2024 Plaintiff Financial Litigation
The 2023 Lawdragon 500 Leading Plaintiff Financial Lawyers 2023 Commercial Litigation, Antitrust & Arbitration
The 2022 Lawdragon 500 Leading Plaintiff Financial Lawyers 2022 Commercial Litigation, Antitrust & Arbitration
The 2022 Lawdragon 500 Leading Lawyers in America 2022 Plaintiff Financial Litigation
The 2021 Lawdragon 500 Leading Plaintiff Financial Lawyers 2021 Commercial Litigation, Antitrust & Arbitration
The 2021 Lawdragon 500 Leading Lawyers in America 2021 Plaintiff Financial Litigation
The 2020 Lawdragon 500 Leading Plaintiff Financial Lawyers 2020 Commercial Litigation, Antitrust & Arbitration
Lawdragon 500 Leading Plaintiff Financial Lawyers 2019 Commercial Litigation, Antitrust & Arbitration

Due in large part to the arbitration practice Postman has built at Keller Postman, the rise of “mass arbitrations” has been one of the most significant recent developments in civil litigation. In the last two years alone, Keller Postman has secured millions in settlements for more than 500,000 individual clients.

Before joining Keller Postman, Postman was Vice President and Chief Counsel for Appellate Litigation at the U.S. Chamber Litigation Center. In that role, he managed appellate strategy for the U.S. Chamber of Commerce, which participates in more than 150 cases each year to shape the law on a wide range of issues affecting businesses. Working closely with senior in-house lawyers at some of the world’s largest companies, Warren gained unique insight into the dynamics and trends that shape business litigation.

Postman served as a law clerk for Justice David H. Souter at the Supreme Court of the United States and Judge William A. Fletcher at the U.S. Court of Appeals for the Ninth Circuit. He graduated magna cum laude from Harvard Law School, where he was Articles Editor on the Harvard Law Review, and graduated magna cum laude and Phi Beta Kappa from Brandeis University.

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