Gregory B. Cook - 03 Dec 2025 Form 4 Insider Report for ECOLAB INC. (ECL)

Role
EVP & PRES - INST GROUP
Signature
/s/ Youhao Dong, as Attorney-in-Fact for Gregory B. Cook
Issuer symbol
ECL
Transactions as of
03 Dec 2025
Net transactions value
$0
Form type
4
Filing time
05 Dec 2025, 16:07:33 UTC
Previous filing
21 May 2025
Next filing
20 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Cook Gregory B EVP & PRES - INST GROUP 1 ECOLAB PLACE, ST. PAUL /s/ Youhao Dong, as Attorney-in-Fact for Gregory B. Cook 05 Dec 2025 0001989181

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
holding ECL Common Stock 9,070 03 Dec 2025 Direct
holding ECL Common Stock 3,532 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 +8,661 $0.000000 8,661 03 Dec 2025 Common Stock 8,661 $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 16.868 UNITS acquired since the reporting person's last report. (The 3532.480 UNITS are the equivalent of approximately 6,481 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.