X0306 4 2014-08-29 0 0000031462 ECOLAB INC ECL 0001189430 LEVIN JERRY W C/O ECOLAB INC. 370 WABASHA STREET NORTH SAINT PAUL MN 55102 1 0 0 0 Common Stock 2014-08-29 4 S 0 855 114.677 D 29560.13 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $114.66 to $114.69, inclusive. The reporting person undertakes to provide to Ecolab Inc., any security holder of Ecolab Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4. /s/David F. Duvick, Attorney-in-Fact for Jerry Levin 2014-08-29