X0306 4 2016-12-31 0 0000031462 ECOLAB INC. ECL 0001184925 BECK BARBARA C/O ECOLAB INC. 370 WABASHA STREET NORTH SAINT PAUL MN 55102 1 0 0 0 Common Stock 2016-12-31 4 A 0 212.59 0 A 19969.50 D Common Stock 2016-12-31 4 A 0 255.11 117.595 A 20282.61 D Includes 58 shares acquired under a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan. /s/ David F. Duvick, as Attorney-in-Fact for Barbara J. Beck 2017-01-04