144 0001837080 XXXXXXXX LIVE 0000031462 ECOLAB INC. 001-09328 1 Ecolab Place St. Paul MN 55102 651-250-3323 Gail Peterson Officer Common Stock E*Trade Financial Corporation

3 Edison Drive Alpharetta GA 30005

934 162283 284720960 05/16/2023 NYSE Common Stock 11/03/2019 Employee stock plan transactions (1) Issuer N 2501 11/03/2019 (1) Y (1) The seller acquired a total of 2501 shares between the dates of November 3, 2019 and February 22, 2023, inclusive, in connection with (i) the vesting of employee restricted stock unit awards and performance-based restricted stock unit awards in which no additional consideration was paid and (ii) the exercise of an employee stock option by means of a net exercise. The shares of the Issuer's common stock issued in connection with these transactions were registered on a Registration Statement on Form S-8. 05/16/2023 /s/ David F. Duvick, as Attorney-in-Fact for Gail Peterson