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Williams Kastner Associate

Sean D. Leake

Sean D. LeakeAssociate
Bar Admissions

U.S. District Court
Western Washington


Sean D. Leake


Sean Leake is an associate in the Seattle office of Williams Kastner. He is a member of the firm’s Business Litigation practice group. Sean began his legal career handling business litigation, construction defect, bid protests, and breach of contract claims in both state and federal courts. Sean recently worked on a bid dispute where the client obtained a successful court decision for a multimillion-dollar public construction project.

Sean is a graduate of the University of Washington School of Law. During law school, Sean represented small businesses and low-income individuals in tax controversy proceedings with the IRS and United States Tax Court.

Sean attended the University of Washington, where he studied economics and international affairs. Before law school, Sean worked as a paralegal in the fields of international corporate compliance, and mergers and acquisitions.


University of Washington
School of Law, J.D., 2017 

University of Washington
B.A., Economics, International Studies, 2013

Presentations & Seminars

  • Co-Author, “Chapter 24: Mediation, Disputes Review Boards, and Project Neutrals.” Washington State Bar Association Construction Law Deskbook, 2019