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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001140361-03-002474.txt : 20030716
<SEC-HEADER>0001140361-03-002474.hdr.sgml : 20030716
<ACCEPTANCE-DATETIME>20030716150714
ACCESSION NUMBER:		0001140361-03-002474
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20030708
FILED AS OF DATE:		20030716

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			NOBLE WILLIAM B
		CENTRAL INDEX KEY:			0001253564

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-06936
		FILM NUMBER:		03789181

	BUSINESS ADDRESS:	
		STREET 1:		BRICK CLOSE, KIIN FARM
		CITY:			MILTON KEYNES
		STATE:			X0
		ZIP:			MK1 13LJ

	MAIL ADDRESS:	
		STREET 1:		BRICK CLOSE, KIIN FARM
		CITY:			MILTON KEYNES
		STATE:			X0
		ZIP:			MK1 13LJ

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WD 40 CO
		CENTRAL INDEX KEY:			0000105132
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS CHEMICAL PRODUCTS [2890]
		IRS NUMBER:				951797918
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0831

	BUSINESS ADDRESS:	
		STREET 1:		1061 CUDAHY PL
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92110
		BUSINESS PHONE:		6192751400

	MAIL ADDRESS:	
		STREET 1:		1061 CUDAHY PLACE
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92110
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0101</schemaVersion>

    <documentType>4</documentType>
<periodOfReport>2003-07-08</periodOfReport>
<notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000105132</issuerCik>
        <issuerName>WD 40 CO</issuerName>
        <issuerTradingSymbol>WDFC</issuerTradingSymbol>
</issuer>
<reportingOwner>
<reportingOwnerId>
            <rptOwnerCik>0001253564</rptOwnerCik>
            <rptOwnerName>NOBLE WILLIAM B</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>0</isDirector>
<isOfficer>1</isOfficer>
<isTenPercentOwner>0</isTenPercentOwner>
<isOther>0</isOther>
<officerTitle>Managing Director, Europe</officerTitle>
<otherText></otherText>
</reportingOwnerRelationship>
</reportingOwner>
<nonDerivativeSecurity>
<securityTitle>
<value>Common Stock</value>
</securityTitle>
<transactionDate>
<value>2003-07-08</value>
</transactionDate>
<transactionCoding>
<transactionFormType>4</transactionFormType>
<transactionCode>M</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved>
<footnoteId id="F1"/>
</transactionCoding>
<transactionTimeliness>
<value></value>
</transactionTimeliness>
<transactionAmounts>
<transactionShares>
<value>1200</value>
</transactionShares>
<transactionValue>
<value>23.75</value>
</transactionValue>
<transactionAcquiredDisposedCode>
<value>A</value>
</transactionAcquiredDisposedCode>
</transactionAmounts>
<postTransactionAmounts>
<sharesOwnedFollowingTransaction>
<value>1500</value>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value>D</value>
</directOrIndirectOwnership>
<natureOfOwnership>
<value></value>
</natureOfOwnership>
</ownershipNature>
</nonDerivativeSecurity>
<nonDerivativeSecurity>
<securityTitle>
<value>Common Stock</value>
</securityTitle>
<transactionDate>
<value>2003-07-08</value>
</transactionDate>
<transactionCoding>
<transactionFormType>4</transactionFormType>
<transactionCode>S</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved>
<footnoteId id="F1"/>
</transactionCoding>
<transactionTimeliness>
<value></value>
</transactionTimeliness>
<transactionAmounts>
<transactionShares>
<value>1200</value>
</transactionShares>
<transactionValue>
<value>28.5669</value>
</transactionValue>
<transactionAcquiredDisposedCode>
<value>D</value>
</transactionAcquiredDisposedCode>
</transactionAmounts>
<postTransactionAmounts>
<sharesOwnedFollowingTransaction>
<value>300</value>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value>D</value>
</directOrIndirectOwnership>
<natureOfOwnership>
<value></value>
</natureOfOwnership>
</ownershipNature>
</nonDerivativeSecurity>
<derivativeSecurity>
<securityTitle>
<value>Incentive Stock Option</value>
</securityTitle>
<conversionOrExercisePrice>
<value>23.75</value>
</conversionOrExercisePrice>
<transactionDate>
<value>2003-07-08</value>
</transactionDate>
<transactionCoding>
<transactionFormType>4</transactionFormType>
<transactionCode>M</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved>
</transactionCoding>
<transactionTimeliness>
<value></value>
</transactionTimeliness>
<transactionAmounts>
<transactionShares>
<value>1200</value>
</transactionShares>
<transactionValue>
<value>0.00</value>
</transactionValue>
<transactionAcquiredDisposedCode>
<value>D</value>
</transactionAcquiredDisposedCode>
</transactionAmounts>
<exerciseDate>
<value>1994-09-27</value>
</exerciseDate>
<expirationDate>
<value>2003-09-27</value>
</expirationDate>
<underlyingSecurity>
<underlyingSecurityTitle>
<value>Common Stock</value>
</underlyingSecurityTitle>
<underlyingSecurityShares>
<value>1200</value>
</underlyingSecurityShares>
</underlyingSecurity>
<postTransactionAmounts>
<sharesOwnedFollowingTransaction>
<value>75400</value>
<footnoteId id="F2"/>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value>D</value>
</directOrIndirectOwnership>
<natureOfOwnership>
<value></value>
</natureOfOwnership>
</ownershipNature>
</derivativeSecurity>
<footnotes>
<footnote id="F1">Transaction pursuant to trading plan adopted pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934.</footnote>
<footnote id="F2">Incentive Stock Option (ISO) to buy 2,400 shares exercisable 09/26/95 at $21.25 expires 09/26/04; ISO to buy 5,000 shares exercisable 01/01/97 at $21.19 expires 09/25/05; ISO to buy 6,000 shares exercisable 01/01/98 at $23.00 expires 09/23/06; ISO to buy 6,000 shares exercisable 01/01/00 at $31.75 expires 09/22/07; ISO to buy 6,000 shares exercisable 01/01/01 at $23.063 expires 09/29/08; Non Qualified Stock Option (NQSO) to buy 10,000 shares exercisable 09/28/00 at $23.50 expires 09/28/09; NQSO to buy 20,000 shares exercisable 09/26/01 at $20.813 expires 09/26/10; NQSO to buy 10,000 shares exercisable 09/25/02 at $20.75 expires 09/26/11; NQSO to buy 10,000 shares exercisable (3,334 exercisable 09/24/03; 3,333 exercisable 09/24/04; 3,333 exercisable 09/24/05) at $27.56 expires 09/24/12.</footnote>
</footnotes>
<ownerSignature>
<signatureName>William B. Noble</signatureName>
<signatureDate>2003-07-12</signatureDate>
</ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24.1
<SEQUENCE>3
<FILENAME>doc2.htm
<DESCRIPTION>POWER OF ATTORNEY
<TEXT>
<html><head><title>EDGARfilings Power of Attorney</title></head>
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 <TD width="100%"><P align=center><FONT size=2><B>&nbsp;</B></FONT></P></TD>
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<TABLE cellSpacing=0 cellPadding=0 width="95%" align=center bgColor=#ffffff border=0>
 <TR vAlign=top bgColor=#ffffff><TD width="100%"><P align=center><FONT size=2><B>POWER OF ATTORNEY</B></FONT></P></TD></TR>
</TABLE>
<TABLE cellSpacing=0 cellPadding=0 width="95%" align=center bgColor=#ffffff border=0>
 <TR vAlign=top bgColor=#ffffff><TD width="100%"><P><FONT size=2><B>&nbsp;</B></FONT></P></TD></TR>
</TABLE>
<TABLE cellSpacing=0 cellPadding=0 width="95%" align=center bgColor=#ffffff border=0>
<TR vAlign=top bgColor=#ffffff><TD width="100%"><P><FONT size=2>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;KNOW ALL BY THESE PRESENTS, THAT THE UNDERSIGNED HEREBY CONSTITUTES AND APPOINTS EACH OF GARRY O. RIDGE AND MARIA M. MITCHELL, SIGNING SINGLY, THE UNDERSIGNEDS TRUE AND LAWFUL ATTORNEY-IN-FACT TO:<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)execute for and on behalf of the undersigned, in the undersigneds capacity as an officerand/or director of WD-40 Company (the Company), Forms 4 and 5 in accordance with Section 16(a) of the Securities Exchange Act of 1934 and the rules thereunder;<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete and execute any such Form 4 or 5 and timely file such form with the United States Securities and Exchange Commission and any stock exchange or similar authority; and<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3)take any other action of any type whatsoever in connection with the foregoing which, in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, it being understood that the documents executed by such attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as such attorney-in-fact may approve in such attorney-in-facts discretion.<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The undersigned hereby grants to each such attorney-in-fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary, or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that such attorney-in-fact, or such attorney-in-facts substitute or substitutes, shall lawfully do or cause to be done by virtue of this Power of Attorney and the rights and powers herein granted. The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the request of the undersigned, are not assuming, nor is the Company assuming, any of the undersigneds responsibilities to comply with Section 16 of the Securities Exchange Act of 1934.<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 4 and 5 with respect to the undersigneds holdings of and transactions in securities issued by the Company, unless earlier revoked by the undersigned in a signed writing delivered to the foregoing attorneys-in-fact.<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 16th day of July, 2003.<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;WITNESS: <br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Preston Ley<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Signature<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;      <br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Preston Ley<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;July 16, 2003<br><br>
</FONT></P></TD></TR></TABLE>
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  <td width="434"><font size=2>/s/&nbsp;
   NOBLE WILLIAM B   </font></td>
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  <td height="25"></td>
  <td>&nbsp;</td>
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  <td height="25"></td>
  <td>&nbsp;</td>
  <td valign="bottom"><font size=2> </font></td>
  <td><font size=2>Signature</font></td>
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  <td></td>
  <td width="247">&nbsp;</td>
  <td></td>
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   NOBLE WILLIAM B  </font></td>
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  <td><font size=2>Print Name</font></td>
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  <td height="25"></td>
  <td>&nbsp;</td>
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  <td><font size=2>7/16/2003</font></td>
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  <td><font size=2>Date</font></td>
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  <td>&nbsp;</td>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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