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Form Type:  5
Filing Date:  10/12/2017 
CIK:  0000909832 
Address:  999 LAKE DRIVE 
City, State, Zip:  ISSAQUAH, Washington 98027- 
Telephone:  (425) 313-8100 
Fiscal Year:  09/02 
Last Trade
Last Trade: 
0.00 (0.00%)  
Trade Time: 
Dec 15  
Market Cap: 
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© 2017  
Description of Business
Costco Wholesale Corporation and its subsidiaries (Costco or the Company) began operations in 1983, in Seattle, Washington. We are principally engaged in the operation of membership warehouses in the United States (U.S.) and Puerto Rico, Canada, United Kingdom (U.K.), Mexico, Japan, Australia, Spain, France, Iceland and through majority-owned subsidiaries in Taiwan and Korea. Costco operated 741, 715, and 686 warehouses worldwide at September 3, 2017, August 28, 2016, and August 30, 2015, respectively. Our common stock trades on the NASDAQ Global Select Market, under the symbol "COST." We report on a 52/53-week fiscal year, consisting of thirteen, four-week periods and ending on the Sunday nearest the end of August. The first three quarters consist of three periods each, and the fourth quarter consists of four periods (five weeks in the thirteenth period in a 53-week year).