Chair of the firm, Mr. Karp has achieved national prominence as both a litigator and corporate adviser. Mr. Karp has extensive experience defending financial institutions and other companies in "bet the company" litigations and regulatory matters. Prior to being named chair of Paul, Weiss, Mr. Karp co-chaired the firm's Litigation Department.

Mr. Karp has been profiled as one of the leading lawyers in the United States by The Wall Street Journal, The New York Times, Crain’s, The American Lawyer, The Lawyer (U.K.), The National Law Journal, The New York Law Journal, Chambers, Lawdragon, Best Lawyers in America, Legal 500, Euromoney Institutional Investors, Law360, and Benchmark/Institutional Investor. In 2003, Mr. Karp was profiled in The American Lawyer as one of the 45 leading lawyers in the United States under the age of 45. Mr. Karp's successful representation of financial institution clients in complex litigations and regulatory matters was featured in a January 2006 American Lawyer cover story, "The Lifesavers," in which Paul, Weiss was selected as the best litigation firm in the United States, and in a January 2010 American Lawyer story, "Wall Street Bailout."

Currently, Mr. Karp is lead counsel for Citigroup in numerous matters, including, among others, its subprime and credit crisis-related litigations and regulatory matters; its auction rate securities litigations and regulatory matters; its failed investment litigations and regulatory matters; its Enron-related litigations and regulatory matters; its Parmalat-related litigations; its research analyst litigations; and a nationwide employment discrimination class action. Mr. Karp also is representing Citigroup in connection with the investigation by the Financial Crisis Inquiry Commission into the causes of the financial crisis, as well as in lawsuits recently brought by Abu Dhabi Investment Authority arising out of its investment in Citigroup, and by Terra Firma arising out of its acquisition of EMI.

In addition to the matters he is handling for Citigroup, Mr. Karp was retained by Bank of America in connection with the litigations and regulatory matters arising out of Bank of America's 2008 merger with Merrill Lynch. Mr. Karp currently is lead counsel for JPMorgan/Bear Stearns in the litigations and regulatory matters arising out of Bear Stearns' March 2008 collapse, and is representing JPMorgan/Bear Stearns in connection with the investigation by the Financial Crisis Inquiry Commission into the causes of the financial crisis. Mr. Karp also is representing syndicates of Wall Street underwriters in several securities class action litigations, including, among others, class actions arising out of $25 billion of GM/GMAC bond offerings and $20+ billion of AIG bond offerings, as well as class actions arising out of the Ambac and American Home Mortgage bond offerings.

Additionally, Mr. Karp is representing Citigroup, JPMorgan/Bear Stearns, Wells Fargo/Wachovia, Bank of America/Merrill Lynch, Morgan Stanley, UBS, Apollo, Deloitte, Ernst & Young, MacAndrews & Forbes, ING, Ericsson, Newmont Mining, Sumitomo, Hexion, Vivendi, Scottish Power, BB&T, OneWest Bank, Eton Park, Fortress, Dresser-Rand and Repsol YPF, S.A., among others, in significant securities, commercial and regulatory matters. Mr. Karp also is handling a range of litigations and special projects for the National Football League, Major League Baseball, Sotheby's and Alcoa.

Mr. Karp is a frequent lecturer and writer, having spoken at more than 200 conferences and published more than 350 articles on business litigation and securities law issues. Mr. Karp has lectured on business litigation and securities litigation at Harvard Law School and Columbia Law School. For the past 25 years, Mr. Karp has written a monthly column for the New York Law Journal, "Second Circuit Review," which analyzes developments in the Second Circuit Court of Appeals.

Mr. Karp is active in the community, serving as a director/trustee of the Legal Action Center, the Riverdale Country School, The Partnership for New York City, Practicing Attorneys for Law Students Program, Inc., American Friends of The Hebrew University, the New York Bar Foundation, the Program Advisory Board of the Brennan Center for Justice, the Economic Club of New York, the Federal Bar Council Second Circuit Inn of Court, and the United States Supreme Court Historical Society. Mr. Karp also is a founding member of the PriceWaterhouse Leaders Council examining financial services industry regulatory reform. Recently, Mr. Karp was awarded the Torch of Learning Award by American Friends of Hebrew University and The Arthur Liman Public Interest Award by the Legal Action Center.