James Warnot

James Warnot

Partner, New York


Member of the New York Bar, Member of the Connecticut Bar, Member of the U.S. District Courts for the Southern and Eastern Districts of New York, Member of the U.S. Courts of Appeals for the Second, Third, Fifth, Seventh, Eleventh and Federal Circuits


James’ practice involves a variety of complex, commercial litigation and arbitration, with an emphasis on financial services issues, including banking and securities litigation, fraud cases, mergers and acquisitions litigation and major contracts. He has also been active in various major antitrust class actions over the last few years and has extensive trial experience in bench and jury trials, arbitrations and evidentiary hearings. On the arbitration side, he has worked on both international and domestic disputes under the rules of the ICC, LCIA, AAA (ICDR), NYSE, NASD and JAMS. Illustrative matters include representing:

  • Deutsche Börse in litigation commenced by shareholders of NYSE-Euronext seeking to enjoin the business combination between the two exchanges
  • Lehman Brothers International (Europe) in the liquidation proceeding of the Lehman Brothers U.S. broker-dealer under the Securities Investor Protection Act
  • a major international bank in an ICDR arbitration arising from the bank’s private equity investment in a Chinese start-up company
  • Deutsche Bank AG and several of its affiliates in proceedings brought in the Refco MDL by the liquidators of the SPhinx family of hedge funds, which were established to replicate the S&P Hedge Fund Index
  • major international banks in derivatives disputes involving index-linked and fund-linked products and related hedging strategies
  • Air France KLM in various antitrust civil class actions and governmental investigations concerning the air cargo and passenger industries
  • Credit Suisse First Boston in numerous industry and other arbitrations, many as lead counsel and including seven matters that have gone to evidentiary hearings
  • a Belgian/Dutch financial institution in a securities class action alleging Section 10(b) and Rule 10b-5 violations arising out of the bank’s public disclosures during the global credit crisis
  • KPMG International in consolidated cases brought by Madoff investors asserting claims of vicarious liability based on audits conducted by KPMG member firms
  • Galaxy Entertainment Group in litigation by convertible bond holders concerning the applicable conversion rights under the bond indenture
  • major international financial institution as lead trial counsel in an MDL antitrust and CEA class action arising from allegations of manipulation of foreign exchange markets, and in related regulatory investigations

James is recognized in Legal 500 U.S. 2017 and ranked as a leading individual in Chambers USA 2015 and a Litigation Star in Benchmark Litigation 2015.

Professional experience

2003 to date Partner, Linklaters, New York 1999 - 2003 Partner, Shearman & Sterling LLP, New York 1991 - 1999 Associate, Shearman & Sterling LLP, New York 1982 - 1991 International Business Machines Corp 1978 - 1982 United Technologies Corporation


1991 - Pace University School of Law, J.D., summa cum laude

1986 - Rensselaer Polytechnic Institute, M.S., Mechanical Engineering

1978 - Cornell University, B.S., Mechanical Engineering