Recognized in Best Lawyers since 2017 
Kristine A. Costello is a trial lawyer with more than 25 years of experience representing clients in complex litigation, government investigations, and criminal defense matters in Seattle, Washington. As the founder of Costello Law Firm PLLC, she represents business owners, executives, and professionals in state and federal courts, as well as in arbitration proceedings and matters before administrative and licensing boards.
Her practice includes criminal defense, white-collar matters, commercial disputes, intellectual property litigation, and government enforcement proceedings. Kris Costello has handled parallel civil and criminal matters involving significant legal, financial, and reputational concerns, and she frequently works with clients facing regulatory scrutiny and internal investigations.
Over the course of her career, Kris Costello has tried more than 50 cases in court and has substantial experience managing litigation strategy and trial preparation. She also taught trial advocacy at the University of Washington for more than a decade, helping law students develop courtroom and litigation skills.
At Costello Law Firm PLLC, Kris Costello focuses on providing strategic legal representation tailored to each client’s circumstances and objectives. Her practice areas include Criminal Defense: General Practice, commercial litigation, white-collar defense, government investigations, and professional licensing matters.
