Sullivan & Cromwell LLP
Aformer U.S. Supreme Court clerk, Los Angeles-based Sullivan & Cromwell litigation partner Diane McGimsey has achieved a series of successful results for clients at the trial and appellate level, focusing on employment litigation, the defense of private class action securities and antitrust litigation and internal investigations.
Among McGimsey’s recent accomplishments has been her work co-leading the S&C team that prevailed in a federal bench trial in which their client, real estate investor Richard Cohen, faced potential damages of $103 million. After an 11-year dispute, the judge ruled in favor of Cohen in January 2022, rejecting claims that he was personally liable for a loan obtained to buy a San Francisco residential apartment complex. McGimsey also obtained summary judgment in full for BP West Coast Products as a co-defendant in two putative antitrust class actions in the Southern District of California.