December 18, 2017

Exhibit 10.2

December 18, 2017

Xxxxxxxx X. Xxxxx

Chairman of the Board

Costco Wholesale Corp.

RE: Extension of Term

Dear Xxxx:

As provided for under section 7(b) of the Executive Employment Agreement, effective January 1, 2017, between Costco Wholesale Corp. and me, this letter will confirm an extension of the term through and including December 31, 2018. Please countersign below to indicate acceptance on behalf of the Company.

Very truly yours,

/s/ X. XXXXX XXXXXXX

X. Xxxxx Xxxxxxx

President and CEO

12/18/2017

Costco Wholesale Corp.

/s/ XXXXXXXX XXXXX

Xxxxxxxx X. Xxxxx

Chairman of the Board

12/18/2017

Cc: Xxxx Xxxxxxx