David MacLennan - 12 Nov 2025 Form 4 Insider Report for ECOLAB INC. (ECL)

Reporting relationship: Director
Issuer ticker: ECL
Reported as of: 12 Nov 2025
Net transaction value: -$451
SEC form: 4
Accepted by SEC: 13 Nov 2025, 16:44:59 UTC
Prior SEC filing: 06 Nov 2025
Next SEC filing: 26 Nov 2025
Source filing: View source filing
Reporting owner signature: /s/ Corinne Lawson, as Attorney-in-Fact of David W. MacLennan

Key filing fact

David MacLennan filed Form 4 for ECOLAB INC. (ECL) on 13 Nov 2025.

Key facts

This page summarizes David MacLennan's Form 4 filing for ECOLAB INC. (ECL).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 13 Nov 2025, 16:44.

Change

Previous filing in this sequence was filed on 06 Nov 2025.
Current net transaction value: -$451.

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 0001498535 Primary reporting owner

MacLennan David

Relationship: Director
Address: C/O ECOLAB INC., 1 ECOLAB PLACE, ST. PAUL
Signature: /s/ Corinne Lawson, as Attorney-in-Fact of David W. MacLennan
Signature date: 13 Nov 2025

Reported non-derivative transactions

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

ECL transaction

Common Stock

Options Exercise

Transaction value: $379,748
Shares: +3,300
Change %: +16%
Price: $115.08
Shares after: 23,736
Date: 12 Nov 2025
Ownership: Direct

ECL transaction

Common Stock

Tax liability

Transaction value: $380,198
Shares: -1,451
Change %: -6.1%
Price: $262.02
Shares after: 22,285
Date: 12 Nov 2025
Ownership: Direct
Footnotes: F1

ECL holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 3,500
Date: 12 Nov 2025
Ownership: By Kathleen F. MacLennan Revocable Trust u/a dated 11/07/2002

ECL holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 709
Date: 12 Nov 2025
Ownership: By sibling's trusts

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ECL transaction Derivative

Non-Employee Stock Option (Right to Buy)

Options Exercise

Transaction value: $0
Shares: -3,300
Change %: -50%
Price: $0.000000
Shares after: 3,300
Date: 12 Nov 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 3,300
Exercise price: $115.08
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

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.

Footnote 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. The date listed in the Date Exercisable column represents the first vesting date.