David J. Ko

David is a partner in the firm’s nationally recognized Complex Litigation Group where he litigates cases on behalf of plaintiffs in federal and state courts across the country in a wide variety of cases involving corporate wrongdoing.

He has helped his clients—including government entities, retirement plans, institutional investors, and consumers—obtain multimillion-dollar recoveries against some of the largest corporations in the country. He has significant trial experience, having tried month-long trials in both federal and state court.

David is currently at the center of the firm’s largest and most high-profile cases. He represents hundreds of government entities all over the country in In re National Prescription Opiate Litigation, MDL No. 2804 (N.D. Ohio)—seeking to hold manufacturers, distributors, and dispensers responsible for creating and fueling the opioid epidemic—and In re: JUUL Labs, Inc. Marketing, Sales Practices, & Products Liability Litigation, MDL 2913 (N.D. Cal.), seeking to hold JUUL and Altria responsible for creating and fueling the youth vaping epidemic. He is also one of the lead attorneys in In re: Facebook, Inc. Consumer Privacy User Profile Litigation, MDL 2843 (N.D. Cal.), a class action on behalf of all Facebook U.S. users alleging Facebook discloses user information and data without consent. 

Prior to joining the firm, David clerked for the Honorable Ricardo S. Martinez, Chief U.S. District Judge in the Western District of Washington. He is past President of the Korean American Bar Association of Washington, and a Fellow of the Washington Leadership Institute. While born in Seoul and extremely proud of his Korean heritage, David has spent most of his life in the Seattle area, where he currently lives with his wife and two young daughters and is an avid supporter of all Seattle sports teams.