<SEC-DOCUMENT>0001140361-17-046113.txt : 20171213
<SEC-HEADER>0001140361-17-046113.hdr.sgml : 20171213
<ACCEPTANCE-DATETIME>20171213191554
ACCESSION NUMBER:		0001140361-17-046113
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20171212
FILED AS OF DATE:		20171213
DATE AS OF CHANGE:		20171213

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PENDARVIS DAVID
		CENTRAL INDEX KEY:			0001196723

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-06936
		FILM NUMBER:		171254905

	MAIL ADDRESS:	
		STREET 1:		REDMED INC
		STREET 2:		14040 DANLELSON ST
		CITY:			POWAY
		STATE:			CA
		ZIP:			92064

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:		9715 BUSINESSPARK AVENUE
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92131
		BUSINESS PHONE:		6192751400

	MAIL ADDRESS:	
		STREET 1:		9715 BUSINESSPARK AVENUE
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92131
</SEC-HEADER>
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<TYPE>3
<SEQUENCE>1
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<DESCRIPTION>FORM 3
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<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2017-12-12</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000105132</issuerCik>
        <issuerName>WD 40 CO</issuerName>
        <issuerTradingSymbol>WDFC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001196723</rptOwnerCik>
            <rptOwnerName>PENDARVIS DAVID</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>9715 BUSINESSPARK AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN DIEGO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>974</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The reporting person was elected to the Issuer's board of directors on December 12, 2017. In accordance with the Issuer's Directors' Compensation Policy and Election Plan, 974 Restricted Stock Units (Common Stock equivalents) were granted to the reporting person pursuant to the WD-40 Company 2016 Stock Incentive Plan for non-elective and elective portions of annual director compensation. The Restricted Stock Units will be settled solely with Issuer Common Stock upon termination of the reporting person's service as a director.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Richard T. Clampitt, as attorney-in-fact for David B. Pendarvis</signatureName>
        <signatureDate>2017-12-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">POWER OF ATTORNEY</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">KNOW ALL BY THESE PRESENTS, THAT THE UNDERSIGNED HEREBY CONSTITUTES AND APPOINTS EACH OF<font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold"> RICHARD T. CLAMPITT</font> AND <font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold">HEIDI L. MODRUSAN</font>, SIGNING SINGLY, THE UNDERSIGNED'S TRUE AND LAWFUL ATTORNEY-IN-FACT TO:</div>

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<div style="TEXT-ALIGN: left; TEXT-INDENT: 36pt"><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">(1)</font><font id="TRGRRTFtoHTMLTab" style="FONT-SIZE: 1px; DISPLAY: inline-block; WIDTH: 36pt">&#160;</font><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">execute for and on behalf of the undersigned, an officer and/or director of WD-40 Company (the "Company"), Forms 3, 4 and 5 in accordance with Section 16(a) of the Securities Exchange Act of 1934 and the rules thereunder;</font></div>

<div><br>
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<div style="TEXT-ALIGN: left; TEXT-INDENT: 36pt"><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">(2)</font><font id="TRGRRTFtoHTMLTab" style="FONT-SIZE: 1px; DISPLAY: inline-block; WIDTH: 36pt">&#160;</font><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">execute for and on behalf of the undersigned, an officer and/or director of the Company, forms 144 in accordance with Rule 144 promulgated under the Securities Act of 1933;</font></div>

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<div style="TEXT-ALIGN: left; TEXT-INDENT: 36pt"><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">(3)</font><font id="TRGRRTFtoHTMLTab" style="FONT-SIZE: 1px; DISPLAY: inline-block; WIDTH: 36pt">&#160;</font><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">execute for and on behalf of the undersigned, an officer and/or director of the Company, Form ID applications and related documentation in accordance with the United States Securities and Exchange Commission Electronic Date Gathering, Analysis, and Retrieval (EDGAR) Filer Management System Requirements;</font></div>

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<div style="TEXT-ALIGN: left; TEXT-INDENT: 36pt"><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">(4)</font><font id="TRGRRTFtoHTMLTab" style="FONT-SIZE: 1px; DISPLAY: inline-block; WIDTH: 36pt">&#160;</font><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">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 of the foregoing filings and timely file such forms with the United States Securities and Exchange Commission and any stock exchange or similar authority; and</font></div>

<div><br>
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<div style="TEXT-ALIGN: left; TEXT-INDENT: 36pt"><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">(5)</font><font id="TRGRRTFtoHTMLTab" style="FONT-SIZE: 1px; DISPLAY: inline-block; WIDTH: 36pt">&#160;</font><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">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-fact's discretion.</font></div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 34.05pt">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-fact's 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 undersigned's responsibilities to comply with Section 16 of the Securities Exchange Act of 1934 or Rule 144 promulgated under the Securities Act of 1933.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 34.05pt">This Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4 and 5 or Forms 144 with respect to the undersigned's 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. The Power of Attorney revokes any and all previous Powers of Attorney of the undersigned.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 34.05pt">IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 9<sup style="vertical-align: text-top; line-height: 1; font-size: smaller">th</sup> day of November, 2017.</div>

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<div><u>/s/ DAVID B. PENDARVIS</u></div>
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<div><u>/s/&#160; BECKY KENYON</u></div>
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<div><u>Becky Kenyon</u></div>
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<div><u>November 9, 2017</u></div>
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