Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
WALKER THOMAS KIRK
   2. Issuer Name and Ticker or Trading Symbol
COSTCO WHOLESALE CORP /NEW [COST] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Executive VP
(Last)
(First)
(Middle)
999 LAKE DRIVE		 3. Date of Earliest Transaction (Month/Day/Year)
10/08/2010
(Street)

ISSAQUAH, WA 98027		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 10/08/2010   M   31,000 A $ 43.79 248,165 D  
Common Stock 10/08/2010   M   12,000 A $ 33.75 260,165 D  
Common Stock 10/08/2010   S   43,000 D (1) 217,165 D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option $ 43.79 10/08/2010   M     31,000 04/01/2005 04/01/2015 Common Stock 31,000 $ 43.79 44,000 D  
Stock Option $ 33.75 10/08/2010   M     12,000 04/01/2003 04/01/2013 Common Stock 12,000 $ 33.75 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
WALKER THOMAS KIRK
999 LAKE DRIVE
ISSAQUAH, WA 98027		       Executive VP  

Signatures

 Deanna K. Nakashima, attorney-in-fact   10/12/2010
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Shares sold as follows: 1100 @ 64.1600 1500 @ 64.1700 518 @ 64.1800 100 @ 64.1900 4064 @ 64.2000 618 @ 64.2100 100 @ 64.2200 1300 @ 64.2400 100 @ 64.2800 200 @ 64.3000 1700 @ 64.3200 492 @ 64.3500 1400 @ 64.3600 200 @ 64.3800 1400 @ 64.3900 100 @ 64.3929 3297 @ 64.4000 1600 @ 64.4100 700 @ 64.4200 2300 @ 64.4300 200 @ 64.4400 2402 @ 64.4500 100 @ 64.4501 311 @ 64.4600 200 @ 64.4650 2213 @ 64.4700 700 @ 64.4701 100 @ 64.4709 300 @ 64.4800 300 @ 64.5100 1400 @ 64.5200 5585 @ 64.5300 1200 @ 64.5301 100 @ 64.5312 700 @ 64.5600 533 @ 64.5900 499 @ 64.6000 600 @ 64.6100 868 @ 64.6400 100 @ 64.6408 1600 @ 64.7000 200 @ 64.7100

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