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David Ko


1201 Third Avenue, Suite 3200
Seattle, WA 98101 

P: 206.623.1900
F: 206.623.3384



David is a partner in the firm’s nationally recognized Complex Litigation Group, where he represents 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, individuals, and institutional investors—obtain several multimillion dollar recoveries against some of the largest corporations in the country.

David has significant experience in all phases of litigation, including trial, at both federal and state court. He was a lead trial attorney in a 14-week bench trial in the Northern District of Illinois involving breach of fiduciary duty claims on behalf of an employee stock ownership plan that resulted in a settlement after judgment and prior to resolution of an appeal. He was also part of the trial team representing three Federal Home Loan Banks that successfully objected to a proposed $8.5 billion settlement submitted by the Bank of America in New York Supreme Court arising out of its purchase of mortgage-backed securities from Countrywide.

David also represented thousands of Super Bowl ticket holders against various ticket brokers engaged in short-selling, including filing the first class action arising out of this widespread and deceptive practice.

Most recently, David has been appointed as a special deputy prosecuting attorney by numerous government entities as outside counsel in litigation against manufacturers, distributors, and dispensers of prescription opioids. David is one of the lead attorneys handling the firm’s opioid cases, and represents counties, cities, and Native American Tribes in Washington, Arizona, California, Colorado, Idaho, and New York in the national opioid litigation pending in the Northern District of Ohio.

Prior to joining the firm, David clerked for the Honorable Ricardo S. Martinez, Chief U.S. District Judge in the Western District of Washington. David is also past President of the Korean American Bar Association of Washington, and a Fellow of the Washington Leadership Institute.

Bar and Court Admissions

2006, Washington

2010, U.S. District Court for the Western District of Washington

2010, U.S. District Court for North Dakota

2011, U.S. Court of Appeals for the Ninth Circuit

2016, U.S. District Court for the Eastern District of Michigan

2018, U.S. Court of Appeals for the Second Circuit

2018, U.S. District Court for the Eastern District of Washington

2019, U.S. District Court for Colorado


University of Washington – B.A., 2002, History and Political Science 

Seattle University School of Law – J.D., cum laude, 2006; National Order of the Barristers 

University of Washington School of Law – LL.M., 2007, Taxation

Professional and Civic Involvement

Washington State Bar Association, Member

King County Bar Association, Member

Korean American Bar Association, Board Member

Asian American Bar Association, Member

National Center for Employee Ownership, Member

Articles and Presentations

Speaker, Human Right to Health: Pathways and Responses, Opioid Abuse and Litigation: Legal and Policy Responses (Seattle, WA, November 2019)

Speaker, Washington State Society of Healthcare Attorneys Annual Conference, Opioid Litigation on Behalf of Local Governments (Seattle, WA, April 2018)

Speaker, Mass Torts Made Perfect, National Costs of Opioid Crisis (Las Vegas, NV, April 2018)

Speaker, National Center for Employee Ownership Annual Conference, Fundamentals of the Repurchase Obligation (Denver, CO, March 2017)

Speaker, National Business Institute, Legal Ethics: Top Attorney-Client Mistakes (Seattle, WA, December 2016)

Speaker, National Business Institute, Title Law: Ethics (Seattle, WA, April 2016)

Honors & Awards

Selected to Rising Stars list in Super Lawyers – Washington, 2019-2020

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