Scott D. Kirkland - 03 Dec 2025 Form 4 Insider Report for ECOLAB INC. (ECL)

Role: CHIEF FINANCIAL OFFICER
Signature: /s/ Youhao Dong, as Attorney-in-Fact for Scott D. Kirkland
Issuer symbol: ECL
Transactions as of: 03 Dec 2025
Transactions value $: $0
Form type: 4
Filing time: 05 Dec 2025, 16:06:02 UTC
Previous filing: 06 May 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Kirkland Scott D	CHIEF FINANCIAL OFFICER	1 ECOLAB PLACE, ST. PAUL	/s/ Youhao Dong, as Attorney-in-Fact for Scott D. Kirkland	05 Dec 2025	0001779234

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	ECL	Common Stock						11.5K	03 Dec 2025	Direct
holding	ECL	Common Stock						1.44K	03 Dec 2025	By Ecolab Savings Plan	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ECL	Employee Stock Option (Right to Buy)	Award	$0	+15.7K		$0.00	15.7K	03 Dec 2025	Common Stock	15.7K	$268.52	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Number of UNITS in the Ecolab Stock Fund of the Ecolab Savings Plan (401(k) Plan) as of November 30, 2025. Includes 6.887 UNITS acquired since the reporting person's last report. (The 1,442.291 UNITS are the equivalent of approximately 2,646 SHARES of the issuer's Common Stock.)
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.