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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1. Name and Address of Reporting Person * PORTERA JOSEPH P   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) 04/01/2008 (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 04/01/2008   M   15,000 A $ 33.75 49,622 D   Common Stock 04/01/2008   M   15,000 A $ 37.35 64,622 D   Common Stock 04/01/2008   M   15,000 A $ 43.79 79,622 D   Common Stock 04/01/2008   S   45,000 D (1) (2) 34,622 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

$ 37.35

04/01/2008

M

15,000

04/01/2004

04/01/2014

Common Stock

15,000

$ 37.35

15,000

D

Stock Option

$ 43.79

04/01/2008

M

15,000

04/01/2005

04/01/2015

Common Stock

15,000

$ 43.79

30,000

D

Stock Option

$ 33.75

04/01/2008

M

15,000

04/01/2003

04/01/2013

Common Stock

15,000

$ 33.75

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
PORTERA JOSEPH P 999 LAKE DRIVE ISSAQUAH, WA 98027			Executive VP

Signatures

Deanna K. Nakashima, attorney-in-fact		04/02/2008
**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: 349 @ 65.19 2500 @ 65.21 1500 @ 65.22 3106 @ 65.23 1900 @ 65.24 2845 @ 65.25 1700 @ 65.26 1616 @ 65.27 1453 @ 65.28 1645 @ 65.29 1039 @ 65.30 4780 @ 65.31 1980 @ 65.32 700 @ 65.33 450 @ 65.34 1177 @ 65.35 1513 @ 65.36 300 @ 65.37 1035 @ 65.38 65 @ 65.39
(2)	Shares sold as (continued): 300 @ 65.400 100 @ 65.420 800 @ 65.430 100 @ 65.440 100 @ 65.445 1261 @ 65.450 139 @ 65.460 2530 @ 65.490 1970 @ 65.500 100 @ 65.510 600 @ 65.520 200 @ 65.530 100 @ 65.550 2400 @ 65.560 200 @ 65.570 100 @ 65.600 100 @ 65.610 400 @ 65.620 400 @ 65.630 300 @ 65.640 400 @ 65.660 347 @ 65.670 400 @ 65.700

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