Gregory B. Cook - 11 Aug 2026 Form 4 Insider Report for ECOLAB INC. (ECL)

Reporting relationship: Co-COO - Global Businesses
Issuer ticker: ECL
Reported as of: 11 Aug 2026
Net transaction value: -$1,302,300
SEC form: 4
Accepted by SEC: 11 Aug 2026, 16:58:48 UTC
Prior SEC filing: 06 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Corinne Lawson, as Attorney-in-Fact for Gregory B. Cook

Key filing fact

Gregory B. Cook filed Form 4 for ECOLAB INC. (ECL) on 11 Aug 2026.

Key facts

This page summarizes Gregory B. Cook's Form 4 filing for ECOLAB INC. (ECL).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 11 Aug 2026, 16:58.

Change

Previous filing in this sequence was filed on 06 May 2026.
Current net transaction value: -$1,302,300.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001989181 Primary reporting owner

Cook Gregory B

Relationship: Co-COO - Global Businesses
Address: 1 ECOLAB PLACE, ST. PAUL
Signature: /s/ Corinne Lawson, as Attorney-in-Fact for Gregory B. Cook
Signature date: 11 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ECL transaction

Common Stock

Sale

Transaction value: $1,302,300
Shares: -4,567
Change %: -28%
Price: $285.13
Shares after: 11,673
Date: 11 Aug 2026
Ownership: Direct
Footnotes: F1

ECL holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 3,625
Date: 11 Aug 2026
Ownership: By Ecolab Savings Plan
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

This transaction was executed in multiple trades at prices ranging from $285.1277 to $285.265, inclusive. The price reported above reflects the weighted average purchase 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.

Footnote F2

Number of UNITS in the Ecolab Stock Fund of the Ecolab Savings Plan (401(k) Plan) as of July 31, 2026. Includes 9.656 UNITS acquired since the reporting person's last report. (The 3,624.511 UNITS are the equivalent of approximately 6,650 SHARES of the issuer's Common Stock.)