<SEC-DOCUMENT>0000909832-19-000028-index.html : 20191210
<SEC-HEADER>0000909832-19-000028.hdr.sgml : 20191210
<ACCEPTANCE-DATETIME>20191210144857
ACCESSION NUMBER:		0000909832-19-000028
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20191210
DATE AS OF CHANGE:		20191210
EFFECTIVENESS DATE:		20191210

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COSTCO WHOLESALE CORP /NEW
		CENTRAL INDEX KEY:			0000909832
		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-VARIETY STORES [5331]
		IRS NUMBER:				911223280
		STATE OF INCORPORATION:			WA
		FISCAL YEAR END:			0902

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-20355
		FILM NUMBER:		191277431

	BUSINESS ADDRESS:	
		STREET 1:		999 LAKE DRIVE
		CITY:			ISSAQUAH
		STATE:			WA
		ZIP:			98027-
		BUSINESS PHONE:		4253138100

	MAIL ADDRESS:	
		STREET 1:		999 LAKE DRIVE
		CITY:			ISSAQUAH
		STATE:			WA
		ZIP:			98027

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COSTCO COMPANIES INC
		DATE OF NAME CHANGE:	19970401

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PRICE/COSTCO INC
		DATE OF NAME CHANGE:	19930728
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>costdefproxy2019additional.htm
<DESCRIPTION>ADDITIONAL DEFINITIVE PROXY SOLICITING
<TEXT>
Document 1 - file: costdefproxy2019additional.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>howtoa01.jpg
<TEXT>
Document 2 - file: howtoa01.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>proxynoticea01.jpg
<TEXT>
Document 3 - file: proxynoticea01.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>votingnotice.jpg
<TEXT>
Document 4 - file: votingnotice.jpg

</DOCUMENT>
</SEC-DOCUMENT>