About
Nicholas P. Crowell is a New York litigation partner at Sidley Austin LLP who focuses on complex securities and commercial lawsuits & disputes. He represents financial institutions, insurance companies, investment advisers, broker-dealers, private equity firms, hedge funds, mutual funds, and other business clients. His work includes federal and state court cases, regulatory matters, and arbitration. He handles disputes involving securities trading, commodities, derivatives, distressed assets, real estate, bankruptcy, accounting fraud, antitrust claims, insurance, and reinsurance.
Nicholas earned a J.D. from The George Washington University Law School in 1998, with honors. During law school, he served as Editor-in-Chief of The George Washington Journal of International Law and Economics. He also earned a B.S. from the University of Arizona in 1993. His legal education and writing leadership support his work in high-value litigation, appeals, investigations, and matters involving complex financial products, business records, contracts, and disputed transactions.
Nicholas has built a career representing clients in major disputes before courts, regulators, FINRA panels, and AAA arbitration panels. He has handled investigations involving the SEC, FINRA, the Department of Justice, and state regulators. His matters include claims tied to prime brokerage agreements, merger transactions, governance issues, partnership agreements, shareholder litigation, class actions, and financial market disputes. He has helped clients by obtaining dismissals, defending claims at trial, appealing injunctions, and managing risk during active disputes. His work often helps companies protect rights, limit losses, and respond to serious claims with clear legal strategy.
Nicholas P. Crowell also supports clients and communities through pro bono work. He helped Children’s Magical Garden in its legal fight to protect a long-standing community garden in lower Manhattan. That work involved an adverse possession claim against developers and included success at both trial and appellate levels. His broader practice shows strong courtroom skill, practical judgment, and careful client service in matters where financial, legal, and public interests often overlap. These efforts reflect steady advocacy for clients and public causes in demanding litigation settings.
Law Office Affiliations
- Partner, Sidley Austin LLP
- Member, New York State Bar Association
Licensed State
- New York
Education
- The George Washington University Law School
Juris Doctor (JD) - University of Arizona
Bachelor of Science (BS)
Awards & Badges

- Arbitration
- Litigation
- Antitrust & Trade Law
- Securities Litigation




