Jonathan Rosenberg

Firmwide Chair of Securities Litigation O'Melveny & Myers LLP

Jonathan Rosenberg, firmwide Chair of the Securities Litigation Practice, is a trial lawyer who focuses on securities, M&A, and other complex commercial litigation, as well as internal investigations and white collar criminal defense. Prior to joining the Firm, Jonathan was an Assistant US Attorney in the Southern District of New York for six years, where he spent two-and-a-half years in the Securities and Commodities Frauds Unit and served as Deputy Chief of the Criminal Division. Jonathan has tried more than twenty cases in government and private practice including federal and state jury and bench trials, and has been lead counsel in many FINRA arbitrations. Jonathan has also argued many times before federal and state appellate courts.

Jonathan has been recognized by Chambers USA since 2009, where clients note he is “a best-in-class securities lawyer.” He is recognized in The Legal 500 US as a “Leading Lawyer” for Securities litigation defense, and Benchmark Litigation named him a Securities “Local Litigation Star (NY).” He has also earned the “Litigator of the Week” distinction from The American Lawyer for financial services litigation achievements, and Law360 named him a Securities MVP.