ECOLAB INC. — Director's Dealing 2025

Dec 5, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ECOLAB INC. (ECL)
CIK: 0000031462
Period of Report: 2025-12-03

Reporting Person: Saluja Harpreet (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-12-04	Common Stock	M	1331	—	Acquired	1331	Direct
2025-12-04	Common Stock	F	407.286	$263.385	Disposed	923.714	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-12-03	Employee Stock Option (Right to Buy)	$268.515	A	5954	Acquired	2035-12-03	Common Stock (5954)	Direct
2025-12-04	Restricted Stock Units	$	M	1331	Disposed	2027-12-04	Common Stock (1331)	Direct

Footnotes

F1: Reflects the reporting person's payment of minimum statutory tax obligations by withholding shares of Ecolab Common Stock incident to the vesting of restricted stock units in accordance with Rule 16b-3.

F2: The option will be exercisable, on a cumulative basis, as to one-third of the option shares (excluding any fractional portion less than one share), on each of the first and second anniversaries of the date of grant and as to the remaining shares on the third anniversary of the date of grant. The date listed in the Date Exercisable column is the first anniversary of the date of grant.

F3: Represents the first (out of three) vesting of units from an initial grant of 3,993 restricted stock units made on December 4, 2024. The vesting schedule for the original grant provided for the units to vest, subject to continued employment, as to one-third of the units (excluding any fractional portion less than one unit), on each of the first and second anniversaries of the date of grant and as to the remaining units on the third anniversary of the date of grant. Restricted stock units convert into common stock on a one-for-one basis.