Described by CNBC as the "toughest lawyer on Wall Street" and by Bloomberg Financial News as an "uberlitigator," Marc E. Kasowitz is widely regarded as a preeminent trial lawyer. He has been profiled by The American Lawyer in an article entitled "Heavy Hitter" and in the cover story "Fast Rise to the Top." In 2013, Marc was designated a "Securities MVP" by Law360, which noted that he "has made a career out of beating big banks." Marc has also been recognized as one of the nation’s top litigators by publications including Chambers USA ("widely respected as an 'extremely talented litigator,'" praised by clients for "his 'tremendous trial experience,'"); Lawdragon 500 ("the cream of the crop"); Benchmark ("a unique, zealous, and exceptionally skilled advocate" "his guidance is extremely reliable and he is very client-focused and big picture-oriented"); The Legal 500 ("excellent across the board," "superbly talented lawyer," and "very much at the center" of the current spate of mortgage-backed securities litigation) and The Best Lawyers in America. Opponents cited by The American Lawyer have acknowledged Marc as a "powerhouse" and "the toughest of the tough guys," and a foreign publication recently referred to him as "one of the most prominent and feared lawyers in the United States."

Marc has an extensive background as national trial counsel in complex litigation in the areas of bank finance, leveraged-buyouts, fraudulent conveyance, RICO, corporate governance, trade secret misappropriation, antitrust, securities, mass tort, breach of contract and other commercial cases. He has also conducted numerous internal investigations on behalf of boards of directors, management and special committees regarding alleged corporate misfeasance, conflicts of interest, challenges to board authority, insider trading, accounting fraud, market timing, obstruction of justice, market manipulation, and other issues relating to director and officer fiduciary responsibilities and liabilities.

Marc is the firm’s founding and managing partner. Described by Law360 as a "decisive leader," he has been profiled as one of the country's most innovative managing partners. In January 2011, he was selected as The American Lawyer's "Litigator of the Week." In 2010, he and the firm were featured in a New York Law Journal cover story entitled "Kasowitz Holds Power Close as He Grows Firm, Lures Business."