<SEC-DOCUMENT>0001179110-13-018273.txt : 20131218
<SEC-HEADER>0001179110-13-018273.hdr.sgml : 20131218
<ACCEPTANCE-DATETIME>20131218174703
ACCESSION NUMBER:		0001179110-13-018273
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20131216
FILED AS OF DATE:		20131218
DATE AS OF CHANGE:		20131218

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ECOLAB INC
		CENTRAL INDEX KEY:			0000031462
		STANDARD INDUSTRIAL CLASSIFICATION:	SOAP, DETERGENT, CLEANING PREPARATIONS, PERFUMES, COSMETICS [2840]
		IRS NUMBER:				410231510
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		ECOLAB CORPORATE CENTER
		STREET 2:		370 WABASHA STREET NORTH
		CITY:			ST PAUL
		STATE:			MN
		ZIP:			55102
		BUSINESS PHONE:		6512932233

	MAIL ADDRESS:	
		STREET 1:		ECOLAB CORPORATE CENTER
		STREET 2:		370 WABASHA STREET NORTH
		CITY:			ST. PAUL
		STATE:			MN
		ZIP:			55102

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ECONOMICS LABORATORY INC
		DATE OF NAME CHANGE:	19861203

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Taylor Stephen M
		CENTRAL INDEX KEY:			0001402034

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-09328
		FILM NUMBER:		131286250

	MAIL ADDRESS:	
		STREET 1:		1601 WEST DIEHL ROAD
		CITY:			NAPERVILLE
		STATE:			IL
		ZIP:			60563-1198
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
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<DESCRIPTION>FORM 4 -
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        <issuerTradingSymbol>ECL</issuerTradingSymbol>
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            <rptOwnerZipCode>60563</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
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            <officerTitle>EVP and Pres. - Global Energy</officerTitle>
            <otherText></otherText>
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    <footnotes>
        <footnote id="F1">Reflects the reporting person's payment of the exercise price and withholding taxes for a stock option issued in accordance with Rule 16b-3 by delivering or withholding shares of Ecolab common stock.</footnote>
        <footnote id="F2">These options originally represented options to purchase shares of common stock of Nalco Holding Company (&quot;Nalco&quot;) and had a variety of vesting schedules. The vesting of these options was accelerated pursuant to Mr. Taylor's Change of Control Agreement with Nalco upon closing of the merger on December 1, 2011 by and among Ecolab Inc., Sustainability Partners Corporation and Nalco. The options were converted into options to purchase shares of Ecolab Inc. common stock pursuant to the Agreement and Plan of Merger dated as of July 19, 2011 among Ecolab Inc., Sustainability Partners Corporation and Nalco.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>David F. Duvick, as Attorney-in-Fact for Stephen M. Taylor</signatureName>
        <signatureDate>2013-12-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
