ECOLAB INC. — Director's Dealing 2024

Mar 5, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ECOLAB INC. (ECL)
CIK: 0000031462
Period of Report: 2024-03-01

Reporting Person: Cook Gregory B (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-02-01	Common Stock	M	1500	$119.120	Acquired	9053.901	Direct
2024-02-01	Common Stock	F	1012	$224.487	Disposed	8041.901	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2024-03-01	Employee Stock Option (Right to Buy)	$119.12	M	1500	Disposed	2025-12-02	Common Stock (1500)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	3357.159	Indirect

Footnotes

F1: The total includes 18.901 shares resulting from automatic dividend reinvestment in transactions exempt pursuant to Rule 16a-11 under Section 16 of the Securities Exchange Act of 1934.

F2: Reflects the reporting person's payment of the exercise price and withholding taxes for a stock option issued in accordance with Rule 16 6-3 by withholding shares of Ecolab common stock.

F3: Number of UNITS in the Ecolab Stock Fund of the Ecolab Savings Plan (401(k) Plan) as of February 29, 2024. Includes 10.673 UNITS acquired since the reporting person's last report. (The 3,357.159 UNITS are the equivalent of approximately 6,163 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 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.