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Duke University School of Law, J.D.

Columbia University, B.A.


New York
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Jonathan J. Walsh
New York
PHONE: +1 212 696 8817
FAX: +1 212 697 1559
PHONE:+1 713 759 9555
FAX:+1 713 759 0712

Mr. Walsh is an experienced litigator, who specializes in complex business litigation and has particular experience in professional liability, cybersecurity, securities litigation and arbitration.

His practice is broadly based, with particular expertise in the professional services sector. He has represented accounting firms and professionals in regulatory matters, major accounting firms and accountants, law firms, commodities brokers, real estate investment companies and public and private companies.  He also advises clients on cybersecurity issues and regularly presents Continuing Legal Education seminars to other practicing attorneys on developing regulations and guidelines.

Mr. Walsh has worked on a variety of litigation matters in both state and federal courts, from inception through trial and post-trial appeals. His experience takes in claims under the federal Securities Exchange Act, the Securities Act, the Employment Retirement Income Security Act (ERISA), and state securities laws as well as claims for negligence, fraud, breach of fiduciary duty, breach of contract and other commercial and business torts. 

He also has significant bankruptcy experience, having prosecuted claims brought by creditors and debtors in bankruptcy actions and claims brought by individuals and companies in both federal and state courts.

Mr. Walsh has represented clients in matters before the Securities and Exchange Commission (SEC), Public Company Accounting Oversight Board (PCAOB), Department of Justice (DOJ), and various state and federal agencies. He has also conducted internal investigations involving accounting issues, financial reporting and disclosure requirements.

His commercial arbitration work includes proceedings conducted under the auspices of the American Arbitration Association (AAA), International Chamber of Commerce (ICC) and London Court of International Arbitration (LCIA) as well as arbitrations utilizing the UNCITRAL Arbitration Rules.


U.S. District Court - Southern District of New York
U.S. District Court - Eastern District of New York
U.S. Court of Appeals - Second Circuit
U.S. Court of Appeals - Fifth Circuit


The Association of the Bar of the City of New York
New York State Bar Association
American Bar Association
        Professional Liability Committee, Sub Committee Chair
        Litigation Section, Member


AV® Preeminent™ Rated by Martindale-Hubbell®

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