Benjamin M. Clark - 07 Aug 2025 Form 3 Insider Report for ECOLAB INC. (ECL)

Role: EVP - Global Supply Chain
Signature: /s/ Corinne Lawson, as Attorney-in-Fact for Benjamin M. Clark
Issuer symbol: ECL
Transactions as of: 07 Aug 2025
Net transactions value: $0
Form type: 3
Filing time: 22 Aug 2025, 16:33:17 UTC
Next filing: 05 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Clark Benjamin M.	EVP - Global Supply Chain	1 ECOLAB PLACE, SAINT PAUL	/s/ Corinne Lawson, as Attorney-in-Fact for Benjamin M. Clark	22 Aug 2025	0002082984

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	ECL	Common Stock						81	07 Aug 2025	Direct

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
holding	ECL	Employee Stock Option (Right to Buy)							07 Aug 2025	Common Stock	1,786	$191.03	Direct	F1
holding	ECL	Employee Stock Option (Right to Buy)							07 Aug 2025	Common Stock	1,711	$247.50	Direct	F2
holding	ECL	Restricted Stock Units							07 Aug 2025	Common Stock	8,843	$0.000000	Direct	F3

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

Explanation of Responses:

Id	Content
F1	The option, originally for a total of 2,678 shares, became and 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.
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	Each restricted stock unit represents a contingent right to receive one share of Ecolab Inc. common stock. The units will vest, subject to continued employment, as to 100% of the grant amount on November 2, 2026, which is the third anniversary of the date of grant.