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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
31462	Ecolab Inc	ECL	Soap, Detergents, Cleang Preparations, Perfumes, Cosmetics (2840)	410231510

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1343364	A Michael Hickey	370 Wabasha Street North Saint Paul MN 55102	Exec. Vp, Qsr & Service Sector	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2010-12-10	14,000	$20.86	25,269	No	4	M	Direct
Common Stock	Acquisiton	2010-12-10	20,000	$18.96	45,269	No	4	M	Direct
Common Stock	Disposition	2010-12-10	28,000	$48.49	17,269	No	4	S	Direct
Common Stock	Disposition	2010-12-10	700	$47.99	16,569	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	M	Direct
No	4	S	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Employee Stock Option (Right to Buy)	Disposition	2010-12-10	14,000	$0.00	14,000	$20.06
Common Stock	Employee Stock Option (Right to Buy)	Disposition	2010-12-10	20,000	$0.00	20,000	$18.96

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0	2002-08-16	2011-08-16	No	4	M	Direct
0	2002-12-06	2011-12-06	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	3,573	Indirect	By Ecolab Savings Plan

Footnotes

Number of UNITS in the Ecolab Stock Fund of the Ecolab Savings Plan (401(k) Plan) as of November 30, 2010. (The 3,573.332 UNITS are the equivalent of approximtely 6,670 shares of the issuer's Common Stock.)
Options granted under the Ecolab Inc. 1997 Stock Incentive Plan. Each option became exercisable, on a cumulative basis, as to one-third of the option shares (excluding any fraction portion less than one share) on each of the first and second anniversaries of the date of grant and as to the remaining shares on the third anniversary of the date of grant.