X0204 3 2012-02-23 1 0000031462 ECOLAB INC ECL 0001098825 LARSON MICHAEL 2365 CARILLON POINT KIRKLAND WA 98033 1 0 0 0 No securities or derivative securities are benefically owned. Peter G. Westphal, as Attorney-In-Fact for Michael Larson 2012-03-05