144 0001433832 XXXXXXXX LIVE 0000031462 ECOLAB INC. 001-09328 1 ECOLAB PLACE ST. PAUL MN 55102 651-250-3323 Larry L. Berger Former Officer, retired less than 90 days ago Common Stock Morgan Stanley Smith Barney LLC - Executive Services

200 W Civic Drive 4th Floor Sandy UT 84070

7900 2398045 283235653 02/12/2026 NYSE Common Stock 12/07/2012 Employee Stock Option Exercise Issuer N 2242 12/07/2012 Broker assisted cashless exercise Common Stock 02/20/2013 Performance-Based Restricted Stock Unit Vesting Issuer N 2500 02/20/2013 N/A Common Stock 02/26/2025 Employee Stock Option Exercise Issuer N 1641 02/26/2025 Broker assisted cashless exercise Common Stock 02/19/2025 Performance-Based Restricted Stock Unit Vesting Issuer N 1517 02/19/2025 N/A Y 02/12/2026 /s/ Corinne Lawson, as Attorney-in-Fact for Larry L. Berger