ECOLAB INC. — Director's Dealing 2026

Feb 26, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ECOLAB INC. (ECL)
CIK: 0000031462
Period of Report: 2026-02-25

Reporting Person: King Margeaux (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-25	Common Stock	M	1662	—	Acquired	1674	Direct
2026-02-25	Common Stock	F	527.166	$306.040	Disposed	1146.834	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-02-25	Restricted Stock Units	$	M	1662	Disposed	2028-02-25	Common Stock (1662)	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: Restricted stock units convert into common stock on a one-for-one basis.

F3: Represents the first (out of three) vesting of units from the grant of 4,988 restricted stock units made on February 25, 2025. The vesting schedule for the 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.