Image: Barry G. Sher

Barry G. Sher

Partner, Litigation Department

New York

Phone: 1(212) 318-6085
Fax: 1(212) 230-5185


Barry Sher is the Global Chair of Paul Hastings’ Litigation Department. He is recognized by Chambers USA: America’s Leading Lawyers for Business for both Commercial Litigation and Securities Litigation; Euromoney’s Benchmark: America’s Leading Litigation Firms and Attorneys; and Lawdragon 500 Leading Lawyers in America. He has earned the highest possible Martindale-Hubbell Peer Review Rating, was named by the American Lawyer as its Litigator of the Week, and is a recipient of the Burton Award for Legal Achievement, awarded each year for excellence in legal writing. Mr. Sher is admitted to the bar in New York. He is admitted to practice before the United States Courts of Appeals for the Second, Third, and Sixth Circuits, and the United States District Courts for the Southern and Eastern Districts of New York and the Western District of Michigan.

He graduated from the University of Chicago Law School, with honors, where he was a member of the Law Review, and from the University of Pennsylvania’s Wharton School undergraduate program, with honors.


  • Lawdragon, 500 Leading Litigators in America (2023)
  • Benchmark Litigation Guide, Future Star (2023)
  • Lawdragon, 500 Leading Litigators in America (2022)
  • Chambers USA - Litigation: General Commercial
  • Chambers USA - Litigation: Securities
  • The Legal 500 - Financial Services Litigation, General Commercial Disputes, Securities Litigation: Defense, M&A Litigation: Defense, and Civil Litigation/Class Actions: Defense


  • University of Chicago Law School, J.D. (with honors, member of the Law Review), 1989
  • Wharton School University of Pennsylvania, B.S. (with honors), 1986 


  • Goldman Sachs  – Mr. Sher represents Goldman Sachs in securities and antitrust cases brought in state and federal courts around the country.
  • Barclays – Mr. Sher and his team represent Barclays in a number of cases and recently won key victories in successive Sherman Act cases.
  • Royal Bank of Canada – Mr. Sher represents RBC in various matters, including a recent successful defense of a federal antitrust action.
  • Appaloosa Management – Mr. Sher has represented Appaloosa in many cases over the years, including in adversary proceedings in the General Motors, Washington Mutual and Delphi Automotive bankruptcies and matters relating to the Carolina Panthers.
  • Cushman & Wakefield – Mr. Sher led the successful defense of multi-billion dollar class actions claiming RICO violations, fraud, breach of contract, and breach of fiduciary duty in connection with a series of secured loan transactions and argued the subsequent appeals of these cases in the Ninth and Tenth Circuits, both of which affirmed.
  • Starwood Capital – Mr. Sher is defending Starwood in various matters relating to its retail portfolio.
  • The Irvine Company – Mr. Sher is representing The Irvine Company in a large real estate arbitration.
  • FIM Advisers  – Mr. Sher and his team obtained dismissal of a purported class action brought by investors in funds managed by Kingate Management Ltd. The Kingate Funds were feeder funds to Bernard L. Madoff Investment Services.  This team also successfully obtained dismissal of clawback claims brought by the trustee for the Madoff bankruptcy.
  • Korean Airlines – Mr. Sher led the defense of our client in the In re Air Cargo Shipping Services Antitrust Litigation, a multi-district litigation in the Eastern District of New York relating to alleged price-fixing in the global air cargo business.
  • UBS – Mr. Sher defended UBS in HSH v. UBS, in which the plaintiff claimed that UBS had committed fraud in connection with a synthetic CDO transaction. Mr. Sher argued the case in the New York Appellate Division, First Department, and in a widely cited opinion the court dismissed the claim and agreed that contractual provisions negotiated by sophisticated parties must be upheld and enforced. Mr. Sher’s successful defense of this matter resulted in his being named Litigator of the Week by the American Lawyer.
  • Invensys plc – Mr. Sher won summary judgment in favor of Invensys in a long-running litigation in the Southern District of New York. The dispute arose out of the sale of Invensys' packaging business to Owens-Illinois, Inc. for approximately $3.6 billion. On appeal to the Second Circuit, which Mr. Sher argued, the Court affirmed the dismissal and ended the case.
  • Brown & Brown, Inc. – Mr. Sher defended one of the country's top ten insurance brokers in In re Insurance Brokerage Antitrust Litigation, which consolidated numerous class actions alleging violations of the federal antitrust laws, RICO, and other federal and state statutes in connection with "contingent commissions" and other insurance broker compensation issues. Mr. Sher was appointed by the Court to the Defendants' Steering Committee and argued the motions to dismiss in the case, which resulted in dismissal of all claims against Brown & Brown.
  • Martha Stewart Living Omnimedia, Inc. – Mr. Sher led the defense of MSO and a number of its directors and officers in the civil cases stemming from Ms. Stewart’s sale of ImClone Systems stock.

Engagement & Publications

Mr. Sher has written, co-written and spoken on a number of topics, including the following:

  • "ISDA Derivatives and Communicating Notice," Stay Current, April 20, 2020
  • "Subprime Mortgage Litigation Trends: Standing and Causation Defenses," Client Alert (February 2018)
  • "The Revival of a Four Year—Old Trade Secrets Prosecution May Shed Light on Whether the U.S. Government Can Effect Service on Foreign Corporations Without a U.S. Presence," Client Alert (January 2016)
  • "Hedge Fund Report: Summary of Key Developments - Fall 2015," Client Alert (December 2015)
  • "What Are the Top Five U.S. Litigation Trends for Korean Companies to Follow in 2016?"  Client Alert (November 2015)
  • "Hedge Fund Report - Summary of Key Developments - Spring 2015," Client Alert (June 2015)
  • "Hedge Fund Report—Summary of Key Developments - Fall 2014," Client Alert (December 2014)
  • "Hedge Fund Report - Summary of Key Developments - Spring 2014," Client Alert (May 2014)
  • "Searching for an Efficient Market with Cross-Listed Securities: Denial of Class Certification in Deutsche Bank Illustrates Increased Scrutiny of the Fraud on the Market Doctrine," Client Alert (November 2013)
  • "Hedge Fund Report: Summary of Key Developments - Fall 2015," Client Alert (October 2013)
  • "Hedge Fund Report - Summary of Key Developments - Spring 2013," Client Alert (April 2013)
  • "Searching for an Efficient Market With Cross-Listed Securities: Denial of Class Certification in Deutsche Bank Illustrates Increased Scrutiny of the Fraud on the Market Doctrine," Client Alert (October 2013)
  • "Hedge Fund Report - Summary of Key Developments - Fall 2012," Client Alert (December 2012)
  • "Delaware Court of Chancery Reaffirms Default Fiduciary Duties in the Limited Liability Company Context Absent Contractual Modifications," Client Alert  (February 2012)
  • "Second Circuit Provides Guidance on the Nature of Disclosures That Will Avoid Liability for Market Manipulation," Client Alert (December 2011)
  • "China Matters: China Reverse Mergers Under Increasing Scrutiny from U.S. Regulators and Plaintiffs’ Lawyers," Client Alert  (May 2011)
  • "The U.S. Government’s Recent Efforts to Ban Pharmaceutical Executives from the Industry Without Due Process," Client Alert (April 2011)
  • "Hedge Fund Report Summary of Key Developments - Spring 2011," Client Alert (April 2011)
  • "Supreme Court Rejects Bright Line Test of ‘Statistical Significance’ for Materiality in Securities Claims," Client Alert (March 2011) 
  • "SEC Adopts First of ABS Disclosure Regulations," Client Alert (January 2011)
  • "Comments on the Whistleblower Program of the Dodd-Frank Act," Client Alert (December 2010)
  • "Hedge Fund Report Summary of Key Developments Fall 2010," Client Alert  (October 2010)
  • "District Court Holds That Rule 10b-5 Insider Trading Provisions Apply to Credit Default Swap (CDS) Contracts," Client Alert (July 2010)
  • "The Supreme Court Limits the Scope of the Federal Criminal Honest Services Fraud Statute to Conduct Involving Bribes or Kickbacks," Client Alert (June 2010)
  • "Supreme Court Affirms Dismissal of F-Cubed Class Action and Holds That There is No Extraterritorial Application of Section 10(b)," Client Alert (June 2010)
  • "Second Circuit Takes Position on ‘Confidential Witnesses’ in Securities Class Actions, Approves Depositions for Purposes of Motion to Dismiss," Client Alert (May 2010)
  • "Second Circuit Affirms Bright Line Attribution Test for Secondary Actor Liability in Private Securities Fraud Actions," Client Alert (May 2010)
  • "SEC Scrutinizing Hedge Fund Side Pockets," Client Alert (May 2010)
  • "Second Circuit Endorses SEC’s Expansive View of Insider Trading," Client Alert (July 2009) 
  • "Ashcroft v. Iqbal: the Supreme Court Reinforces Twombly’s Bite in Altering Federal Pleading Standards," Client Alert (June 2009) 
  • "Federal Reserve Proposes New Regulations in Response to Subprime Issues," Client Alert (December 2007) 
  • "Bush Mortgage Relief Plan – Questionable Relief, Questionable Protection from Litigation," Client Alert (December 2007) 
  • "Mortgage Reform Bill Gains Momentum," New York Law Journal (December 2007)
  • "International Developments in Insider Trading Enforcement," Andrews Securities Litigation and Regulation Reporter (August 2007) 
  • "Bell Atlantic Corp. v. Twombly – The Supreme Court Tightens Pleading Standards for Antitrust Conspiracy and Beyond," Client Alert (May 2007)
  • "Delaware Court Denies Motions to Dismiss in Two Shareholder Derivative Actions Challenging Timing of Stock Option Grants," Client Alert (February 2007) 
  • "Waiting for ‘Twombly’: The Supreme Court Will (Hopefully) Offer Guidance on Pleading 1 Antitrust Conspiracy," New York Law Journal (December 2006 )
  • "Stock Option Issues Lead to SEC Investigation, Restatements and Litigation," Client Alert (June 2006)
  • "Cold Comfort for Andersen, Caution for the Rest of Us," Client Alert (June 2005)
  • "Backdating Stock Options – the Issue and the Exposure," BNA Securities Regulation & Law (February 2006) 
  • "Director Independence and the Demand Requirement," New York Law Journal (December 2005)

Practice Areas

Antitrust and Competition
Securities Litigation




New York Bar


The University of Chicago Law School, J.D. 1989
The Wharton School University of Pennsylvania, B.A. 1986

Get In Touch With Us

Contact Us