X0306 4 2020-02-26 0 0000031462 ECOLAB INC. ECL 0001471500 Beck Christophe 1 ECOLAB PLACE SAINT PAUL MN 55102 0 1 0 0 President & COO Common Stock 2020-02-26 4 A 0 5243 0 A 33909 D Common Stock 2020-02-26 4 F 0 1626 195.74 D 32283 D Common Stock 1154.171 I By Ecolab Savings Plan Reflects the reporting person's payment of minimum statutory tax obligations by withholding shares of Ecolab Common Stock incident to the vesting of performance-based restricted stock units in accordance with Rule 16b-3. Number of UNITS in the Ecolab Stock Fund of the Ecolab Savings Plan (401(k) Plan) as of January 31, 2020. Includes 18.779 UNITS acquired since the reporting person's last report.(The 1,154.171 UNITS are the equivalent of approximately 2,116 SHARES of the issuer's Common Stock.) /s/ David F. Duvick, as Attorney-in-Fact for Christophe Beck 2020-02-28