Jason T. Dennett


Professional Experience

Jason practices commercial litigation, with an emphasis on representing plaintiffs in class actions, investor litigation, and trust and estate litigation.

Prior to law school, Jason earned his NASD Series 7 securities license and worked for several years in the securities industry. He served as a judicial extern to the Honorable Ann Aiken, U.S. District Court, District of Oregon.

Representative Matters
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  • Commercial and Business Litigation

    Litigated and tried cases involving shareholder and partnership agreements, non-compete, non-circumvention, and non-disclosure agreements, derivative actions on behalf of LLC members, sales of businesses and their assets, sales of goods under the Uniform Commercial Code, and commercial real estate contracts.

  • Securities Litigation and Arbitration

    Jason has represented investors in FINRA arbitration cases alleging fraud, unsuitability, misrepresentations and omissions, negligence, churning, unauthorized transactions, breach of fiduciary duty, execution failures, selling away, and selling unregistered securities. Past cases have involved stockbrokers' recommendations of stocks, junk bonds, mutual funds, options and other derivatives, mortgage and asset-back securities, real estate investment trusts (REITs), tenant in common (TIC) securities, structured products, annuities, auction rate securities, and misuse of margin and mortgage borrowing.

    Jason has also represented stockbrokers and brokerage firms in FINRA arbitrations and securities-related disputes, including customer cases, raiding claims, forgivable loan agreements, and FINRA disciplinary proceedings.

  • Trust and Estate Litigation

    Represented plaintiffs and defendants in will contests, under Washington's Trust and Estate Dispute Resolution Act (TEDRA), alleging lack of testamentary capacity, undue influence, fraud, insane delusion, and failure of execution.

    Represented parties in cases involving later-dated, lost, or destroyed wills.

    Litigated cases involving breaches of fiduciary duty or fraud by personal representatives and executors, trustees, and those holding power of attorney.


  • Class Action Litigation

    Jason represents plaintiffs in consumer and privacy class actions.  He serves as interim lead counsel with his partners in In re Premera Blue Cross Customer Data Security Breach Litigation.  Along with his co-counsel around the country, he is prosecuting In re Navistar Maxxforce Engines Marketing, Sales Practices and Products Liability Litigation and the Hyundai Shattering Sunroof Litigation.

  • Publications & Presentations

    “A Primer on the Unauthorized Practice of Law in Securities Arbitrations: What You Don’t Know Can Hurt You,” Securities Arbitration 2006: Taking Responsibility (Practising Law Institute, 2006).

    “Litigating the Case in Probate Court,” The Probate Process Start to Finish (McQuillan Education, 2008)


  • J.D., University of Oregon School of Law
  • B.S., University of Oregon


  • Washington
  • U.S. District Court for the Eastern District of Washington
  • U.S. District Court for the Western District of Washington

Professional Recognition

  • Recognized as a “Rising Star” in Washington Law & Politics Magazine 2012-2014

Professional and Community Involvement

  • Chair, Washington State Bar Association Continuing Legal Education Committee, 2010-2012
  • Volunteer Attorney, King County Neighborhood Legal Clinics, 2000-Present
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    Kim is by far one of the BEST litigators around! You can always expect big results from him and his law firm....

    Noah Wick, M.A. Contact Us
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    Chase - You have saved me tens of thousands of dollars over what I could have obtained had I tried to handle the matter myself. With hundreds of thousands of dollars at stake you were worth every penny of your most reasonable fee....

    Stanley R. Byrd Contact Us
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    Kevin is a great fit for the issue he helped with and continues to help with. We have followed him from another firm to TBS and have worked with him for 10 years now...I appreciate Kevin and what he continues to do to assist us....

    Leif Langlois Contact Us