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 * SINEGAL JAMES D   2. Issuer Name and Ticker or Trading Symbol COSTCO WHOLESALE CORP /NEW [Cost] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) President and CEO (Last) (First) (Middle) C/O COSTCO WHOLESALE CORP., 999 LAKE DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 06/06/2005 (Street) ISAQUAH, 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 06/06/2005   S   200,000 D $ 0 (1) (2) 655,674 D   Common Stock               1,892,231 I By LLC Common Stock               4,312 I By GRAT Common Stock               4,312 I By Spouse's GRAT

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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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
SINEGAL JAMES D C/O COSTCO WHOLESALE CORP. 999 LAKE DRIVE ISAQUAH, WA 98027	X		President and CEO

Signatures

Deanna K. Nakashima, Attorney-in-Fact		06/08/2005
**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)	Number of Shares/Price 900@$45.9000 2200@$45.9018 4971@$45.9120 900@$45.9367 600@$45.9750 1100@$45.9600 997@$45.9110 1390@$45.9065 439@$45.9095 100@$45.8750 2477@$45.8100 100@$45.8800 100@$45.8500 200@$45.8350 2800@$45.8000 1149@$45.8557 440@$45.8468 1197@$45.8900 2599@$45.8418 2700@$45.8311 2975@$45.8290 2838@$45.8781 1144@$45.8762 756@$45.85400 2470@$45.8500 10635@$45.8400 701@$45.8329 1343@$45.8417 2500@$45.8600 1400@$45.8471 1537@$45.8656 1200@$45.8650 1319@$45.8153 2200@$45.8441 820@$45.8700 1614@$45.8325 11969@$45.8300 1369@$45.8622 482@$45.8641 1705@$45.8504 750@$45.8647 18108@$45.8800 900@$45.8833 734@$45.8841 2700@$45.8763 1897@$45.8784 600@$45.8850 1200@$45.8250 2051@$45.8119 1640@$45.8713 1800@$45.8467 2400@$45.8450 550@$45.8445 550@$45.8345 600@$45.8200 1200@$45.8225 1100@$45.8064
(2)	Number of Shares/Price (cont'd) 797@$45.8538 500@$45.8560 1800@$45.8217 1092@$45.8746 900@$45.8867 700@$45.8914 942@$45.8773 400@$45.8950 900@$45.8456 700@$45.8314 1000@$45.8040 3300@$45.8282 1900@$45.8305 1273@$45.8424 1428@$45.8544 1600@$45.8531 1449@$45.8376 7400@$45.3839 160@$45.7000 100@$45.8200 90@$45.7200 136@$45.7600 22@$45.8000 914@$45.8400 240@$45.8200 1071@$45.8500 951@$45.8600 409@$45.8100 911@$45.8800 768@$45.8700 191@$45.8900 112@$45.9000 215@$45.9100 306@$45.7900 375@$45.8300 15@$45.7500 63@$45.7800 16@$45.7700 6@$45.9600 71@$45.9200 85@$45.8500 100@$45.7400 200@$45.8200 4000@$45.7500 10000@$45.7100 100@$45.7900 100@$45.7950 5470@$45.7405 3118@$45.7982 3600@$45.7800 6858@$45.7783 1500@$45.7527 2940@$45.7394 1337@$45.7867 1290@$45.7593 900@$45.7933 1500@$45.7660 700@$45.7657 684@$45.7571 895@$45.7466 900@$45.7667 584@$45.7803 800@$45.7500

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