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Mayer Brown

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Joseph De Simone

Work +1 212 506 2559
Mayer Brown

Work Department



Joseph De Simone is an experienced, well-respected litigator whose practice is focused primarily on securities and regulatory disputes, internal corporate investigations, Sarbanes-Oxley compliance, complex arbitrations, and general corporate litigation. investigative cases. These include: Securities Litigation. Represents issuers, underwriters, and individual officers and directors in various federal securities class actions and derivative actions; counsels clients and boards of directors in connection with securities law issues. SEC and AG Enforcement. Represents corporations and individuals in investigatory proceedings and civil enforcement actions brought by the SEC and state attorneys general. Internal Corporate Investigations. Conducts and participates in internal corporate investigations on behalf of client management groups, audit committees, or special litigation committees in industry sectors such as banking, retail, Internet, technology, and broadcasting and communications. Sarbanes-Oxley Compliance. Counsels companies and their officers and directors on Sarbanes-Oxley litigation and compliance issues. Arbitrations. Arbitrates complex civil disputes in various arbitral venues, including the American Arbitration Association and ICC. General Civil Litigation. Represents corporate and individual clients in federal and state courts in a variety of civil actions, including commercial actions, contract disputes, breaches of fiduciary duty, employment, intellectual property, and mergers and acquisitions litigation. Pro Bono. Has successfully represented indigent clients in political asylum applications, a habeas corpus petition, death penalty litigation, and a special skills visa application; in 1998, received the Thurgood Marshall Award from the Association of the Bar of the City of New York for death penalty litigation; in 2004, received the Legal Aid Society’s Pro Bono Publico Award for outstanding work on a successful habeas corpus petition.


Arizona, 1998 New York, 1996 US Court of Appeals for the Second Circuit, 2001 US District Court for the Southern District of New York US District Court for the Eastern District of New York

United States: Dispute resolution

Securities litigation: defense

Within: Securities litigation: defense

Mayer Brown’s New York securities litigation team is ‘highly responsive, very detail oriented and provides high-value advice from subject matter experts’. Joseph De Simone, Richard Spehr and Steven Wolowitz (who is a ‘thought leader and an expert in his field’) are the key partners in the practice. The firm, which was heavily involved in securities litigation arising from the global financial crisis, is noted for the close integration of its litigation, investigation and enforcement capabilities. Its highlights included the work of Christopher Houpt, Michael Martinez and Matthew Ingber for Bank of New York Mellon in cases related to its role as trustee of RMBS transactions. In re The Bank of New York Mellon saw the bank settle claims for $8.5bn, the largest private settlement in history, but litigation continues in regard to how the settlement is distributed. In another key case, Wolowitz advised Société Générale on class actions alleging manipulation of reference rates including Libor. Michele Odorizzi in Chicago is also recommended.

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