Extension of the Term of the Executive Employment Agreement, effective January 1, 2021, between W. Craig Jelinek and Costco Wholesale Corporation

Hamilton E. James

Chairman of the Board

Costco Wholesale Corporation

Dear Tony:

As provided for under section 7(b) of the Executive Employment Agreement, effective January 1, 2017, between Costco Wholesale Corporation and me, this letter will confirm an extension of the term through and including December 31, 2021. Consistent with the prior decisions of the Compensation Committee: section 1(a) is amended to change the Annual Base Salary to $1,050,000; and section 1(h) is amended to change the Target Bonus to $400,000. Please countersign below to indicate acceptance on behalf of the Company.

cc: John Stanton