John J. Zillmer - 13 Feb 2026 Form 4 Insider Report for ECOLAB INC. (ECL)

Role: Director
Signature: /s/ Corinne Lawson, as Attorney-in-Fact for John J. Zillmer
Issuer symbol: ECL
Transactions as of: 13 Feb 2026
Net transactions value: +$75.92
Form type: 4
Filing time: 17 Feb 2026, 16:46:30 UTC
Previous filing: 05 Jan 2026
Next filing: 02 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
ZILLMER JOHN J	Director	C/O ECOLAB INC., 1 ECOLAB PLACE, ST. PAUL	/s/ Corinne Lawson, as Attorney-in-Fact for John J. Zillmer	17 Feb 2026	0001188262

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ECL	Common Stock	Options Exercise	$264,672	+2,300	+4.8%	$115.08	49,891	13 Feb 2026	Direct
transaction	ECL	Common Stock	Tax liability	$264,597	-879	-1.8%	$301.02	49,012	13 Feb 2026	Direct	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	Non-Employee Stock Option (Right to Buy)	Options Exercise	$0	-2,300	-100%	$0.000000	0	13 Feb 2026	Common Stock	2,300	$115.08	Direct	F2

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

Explanation of Responses:

Id	Content
F1	Reflects the reporting person's payment of the exercise price for a stock option issued in accordance with Rule 16b-3 by delivering or withholding shares of Ecolab common stock.
F2	The option became exercisable, on a cumulative basis, as to 25% of the option shares (excluding any fractional portion less than one share), on the last day of each of the first, second and third three-month periods following its date of grant and as to the remaining shares on the last day of the fourth three-month period following its date of grant; provided, however, that if a Change in Control of the Company (as that term is defined in the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan) will occur, then the option will become immediately exercisable in full.

Content

Reflects the reporting person's payment of the exercise price for a stock option issued in accordance with Rule 16b-3 by delivering or withholding shares of Ecolab common stock.

The option became exercisable, on a cumulative basis, as to 25% of the option shares (excluding any fractional portion less than one share), on the last day of each of the first, second and third three-month periods following its date of grant and as to the remaining shares on the last day of the fourth three-month period following its date of grant; provided, however, that if a Change in Control of the Company (as that term is defined in the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan) will occur, then the option will become immediately exercisable in full.