Sean R. Matt

Current Role

Hagens Berman Sobol Shapiro LLP
Practice focuses on multi-state and nationwide class actions and complex commercial litigation encompassing securities and finance, consumer, antitrust, insurance and products
Diverse experience in most of the firm’s practice areas, involving appearances in state and federal courts across the country at both the trial and appellate levels
Key member of the firm’s automobile defect litigation team
Key member of the firm’s securities litigation team, co-leading the prosecution and settlement of the In re Plantronics, Inc. Securities Litigation, In re Charles Schwab Securities Litigation, the In re Oppenheimer Champion Income Fund Securities Class Actions and the Oppenheimer Core Bond Fund Class Action Litigation
Key member of the firm’s pharmaceutical litigation team that confronts unfair and deceptive pricing and marketing practices in the drug and dietary supplement industries including Average Wholesale Price Litigation, the First Databank/McKesson Pricing Fraud Litigation and the Enzyte Litigation

Recognition

500 Leading Lawyers in America, Plaintiff Consumer Lawyers, Lawdragon, 2021-2025
500 Leading Lawyers in America, Plaintiff Financial Lawyers, Lawdragon, 2020-2024
The Best Lawyers in America, Plaintiffs Product Liability Litigation, Best Lawyers, 2024
Nominated as part of the team in In re Toyota Motor Corp. Sudden, Unintended Acceleration for Trial Lawyer of the Year Award, Public Justice, 2014

Notable Cases

Mercedes Emissions, $763 million settlement
In re Charles Schwab Securities Litigation, $235 million settlement
In re Oppenheimer Champion Income Fund Securities Fraud Class Actions, $52.5 million proposed settlement
Oppenheimer Core Bond Fund Class Action Litigation, $47.5 million settlement
Morrison Knudsen and Costco Wholesale Corp. Securities Litigation
In re Pharmaceutical Industry Average Wholesale Price Litigation, $338 million settlement
In re Toyota Motor Corp. Unintended Acceleration Marketing, Sales Practices, and Products Liability Litigation
In re Checking Account Overdraft cases pending against many of the country’s largest banks
Washington State Ferry Litigation, which resulted in one of the most favorable settlements in class litigation in the history of the state of Washington
Microsoft Consumer Antitrust cases
State Attorneys General Tobacco Litigation, assisted with client liaison responsibilities, working closely with assistant attorneys general in Oregon, Ohio, Arizona, Alaska and New York, as well as assisting in all litigation matters

Publications

"Providing a Model Responsive to the Needs of Small Businesses at Formation: A Focus on Ex Ante Flexibility and Predictability," 71 Oregon Law Review 631,1992

Personal Insight

Sean, whose four-man team won cycling’s prestigious Race Across America with a time of six days and three hours, still occasionally rides a bike.

Leads the firm's innovation in organizing and prosecuting individual class cases across many states involving the same defendants and similar factual and legal issues, an approach that continues to be a key factor in the firm's success