Atty. David Ko
David is a partner in the firm’s nationally recognized Complex Litigation Group, where he represents plaintiffs 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.
Antitrust & Trade Regulation & More Attorney · Serving Seattle, WA · 20+ Years Experience
Profile Summary
About David Ko at a Glance
David Ko is a Partner based in Seattle, Washington, practicing at Keller Rohrback L.L.P.. They have 20+ years of legal experience, licensed to practice since 2006. Their practice focuses on drug crimes, employment, class action, securities, and litigation. Admitted to practice in Washington (2006), U.S. District Court for North Dakota (2010), U.S. District Court for the Western District of Washington (2010), and U.S. Court of Appeals for the Ninth Circuit (2011). Educated at Seattle University School of Law (J.D., 2006) and University of Washington (B.A. History, 2002). Serves clients in Seattle, WA and the surrounding metropolitan area.
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About David Ko
- David is a partner in the firm’s nationally recognized Complex Litigation Group, where he represents plaintiffs 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 months-long trials in both federal and state court
- David has been at the center of the firm’s largest and most high-profile cases
- He represents government entities all over the country in In re National Prescription Opiate Litigation, MDL 2804 (N.D
- Ohio) -seeking to hold manufacturers, distributors, and dispensers responsible for creating and fueling the opioid epidemic-which has resulted in over $50 billion in settlements to date
- He was also one of the primary attorneys in In re Facebook, Inc. Consumer Privacy User Profile Litigation, MDL 2843 (N.D
- Cal.), a class action alleging Facebook discloses user information and data without consent that recently resolved for $725 million, the largest settlement to date of a U.S. privacy class action and the most Facebook has ever paid to resolve private litigation
- David also helped lead the firm’s efforts in In re JUUL Labs, Inc. Marketing, Sales Practices, & Products Liability Litigation , MDL 2913 (N.D
- Cal.), which resulted in nearly $2 billion in settlements from JUUL and Altria for their role in the youth vaping epidemic
- David served in a variety of prominent positions and committees in these MDLs, and continues to serve in leadership roles in complex MDLs against the pharmaceutical industry including against Pharmacy Benefit Managers
- He currently serves as Co-Lead Counsel on behalf of a class of independent pharmacies in In re GoodRx and Pharmacy Benefit Manager Antitrust Litigation (No
- II), MDL 3148 (D.R.I.), and on the Plaintiffs’ Executive Committee on behalf of self-funded plans in In re Insulin Pricing Litigation, MDL 3080 (D.N.J.)
- Prior to joining the firm, David clerked for the Honorable Ricardo S. Martinez, 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
- Articles & Presentations •Speaker, Ethics in Class Actions, AAJ 2025 Annual Convention, San Francisco, CA (July 2025) •Speaker, From Conflict to Cost-Savings: How Mediation Can Make eDiscovery More Efficient (July 2024). •Speaker, Opioid Litigation, Washington Association of Prosecuting Attorneys Summer Training Program, Chelan, WA (June 2023). •Speaker, Opioid Litigation Settlement Updates, Washington County Administration Association Annual Conference (April 2023). •Speaker, Opioid Litigation, Washington Association of Prosecuting Attorneys Spring Training Program, Tacoma, WA (April 2023). •Speaker, Opioid Abuse and Litigation: Legal and Policy Responses, Human Right to Health: Pathways and Responses, Seattle, WA (November 2019) •Speaker, Opioid Litigation on Behalf of Local Governments, Washington State Society of Healthcare Attorneys Annual Conference, Seattle, WA (April 2018). •Speaker, National Costs of Opioid Crisis, Mass Torts Made Perfect, Las Vegas, NV (April 2018). •Speaker, Fundamentals of the Repurchase Obligation, National Center for Employee Ownership Annual Conference, Denver, CO (March 2017). •Speaker, Legal Ethics: Top Attorney-Client Mistakes, National Business Institute, Seattle, WA (December 2016). •Speaker, Title Law: Ethics, National Business Institute, Seattle, WA (April 2016)
- Honors & Awards •Lawdragon, 500 Leading Plaintiff Financial Lawyers, 2023-2026 •Selected to Super Lawyers list in Super Lawyers - Washington, 2022-2025 •Selected to Rising Stars list in Super Lawyers - Washington, 2019-2020 •National Trial Lawyers: Top 100 Civil Plaintiff Trial Lawyers in Washington, 2020-present
Practice Areas Explained
David Ko's Areas of Legal Practice
Each practice area below reflects the types of cases David Ko handles, with a practical overview of what that area of law involves and how it may apply to your situation in Seattle.
Drug Crimes in Seattle
David Ko is one of 6,914 drug crimes attorneys indexed nationally. Browse drug crimes attorneys in Washington →
Employment Law in Seattle
Employment lawyers represent workers in wrongful termination, discrimination, harassment, wage & hour disputes, and severance negotiations.
David Ko is one of 167,770 employment attorneys indexed nationally. Browse employment attorneys in Washington →
Class Action in Seattle
David Ko is one of 26,226 class action attorneys indexed nationally. Browse class action attorneys in Washington →
Securities Law in Seattle
David Ko is one of 64,075 securities attorneys indexed nationally. Browse securities attorneys in Washington →
Civil Litigation in Seattle
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
David Ko is one of 450,751 litigation attorneys indexed nationally. Browse litigation attorneys in Washington →
Jurisdictional Context
Why Local Counsel Matters in Seattle
Practicing law in Washington. Legal matters in Washington are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Seattle are typically filed in the local municipal court or the appropriate Washington state district court, depending on subject matter and amount in controversy. An attorney licensed in Washington brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Washington courts without local counsel or pro hac vice admission.
Seattle Courts and Legal Process
Choosing a Seattle-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.
Looking for additional Washington attorneys? Browse all attorneys in Seattle or all attorneys in Washington.
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Professional Profile
Why Clients in Seattle Choose David Ko
Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish David Ko's practice in the field of drug crimes, employment, class action, securities, and litigation.
Decade-Tested Legal Experience
David Ko brings 20+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Multi-State Bar Admission
Licensed in Washington, U.S. District Court for North Dakota, and U.S. District Court for the Western District of Washington, David Ko can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering drug crimes, employment, and class action, David Ko can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Seattle
A Seattle-based practice means David Ko attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
Case Types
Common Legal Issues David Ko Handles in Seattle
Below is a representative sample of the types of matters David Ko has experience with under Washington law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.
This list is illustrative, not exhaustive. Contact David Ko directly to discuss the specifics of your situation.
Search Reference
How People Find David Ko Online
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David Ko's Practice Areas & Specializations
Education & Law School Background
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