Christophe Beck - 24 Feb 2026 Form 4 Insider Report for ECOLAB INC. (ECL)

Role: CHAIRMAN & CEO, Director
Signature: /s/ Corinne Lawson, as Attorney-in-Fact for Christophe Beck
Issuer symbol: ECL
Transactions as of: 24 Feb 2026
Net transactions value: -$3,341,502
Form type: 4
Filing time: 25 Feb 2026, 16:57:57 UTC
Previous filing: 20 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Beck Christophe	CHAIRMAN & CEO, Director	1 ECOLAB PLACE, ST. PAUL	/s/ Corinne Lawson, as Attorney-in-Fact for Christophe Beck	25 Feb 2026	0001471500

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ECL	Common Stock	Options Exercise	$2,805,859	+23,833	+27%	$117.73	110,794	24 Feb 2026	Direct
transaction	ECL	Common Stock	Sale	$5,568,566	-18,120	-16%	$307.32	92,674	24 Feb 2026	Direct	F1
transaction	ECL	Common Stock	Sale	$578,796	-1,880	-2%	$307.87	90,794	24 Feb 2026	Direct	F2
holding	ECL	Common Stock						1,736	24 Feb 2026	By Ecolab Savings Plan	F3

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)	Options Exercise	$0	-23,833	-100%	$0.000000	0	24 Feb 2026	Common Stock	23,833	$117.73	Direct	F4

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

Explanation of Responses:

Id	Content
F1	This transaction was executed in multiple trades at prices ranging from $306.77 to $307.76, inclusive. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
F2	This transaction was executed in multiple trades at prices ranging from $307.77 to $307.95, inclusive. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
F3	Number of UNITS in the Ecolab Stock Fund of the Ecolab Savings Plan (401(k) Plan) as of January 31, 2026. (The 1,735.608 UNITS are the equivalent of approximately 3,182 SHARES of the issuer's Common Stock.)
F4	Option granted under the Ecolab Inc. 2010 Stock Incentive Plan. The option became 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 option shares on the third anniversary of the date of grant. The date listed is the first anniversary of the date of grant.