ECOLAB INC. — Director's Dealing 2026

Feb 18, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ECOLAB INC. (ECL)
CIK: 0000031462
Period of Report: 2026-02-17

Reporting Person: Alfano Nicholas J. (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-17	Common Stock	M	9501	$137.09	Acquired	14222.639	Direct
2026-02-17	Common Stock	S	9501	$303.58	Disposed	4721.639	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-02-17	Employee Stock Option (Right to Buy)	$137.087	M	9501	Disposed	2027-12-06	Common stock (9501)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1481.033	Indirect

Footnotes

F1: The total includes 3.5 shares resulting from automatic dividend reinvestment in transactions exempt pursuant to Rule 16a-11 under Section 16 of the Securities Exchange Act of 1934 since the reporting person's last report.

F2: This transaction was executed in multiple trades at prices ranging from $303.49 to $303.65, inclusive. The price reported above reflects the weighted average sale 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.

F3: Number of UNITS in the Ecolab Stock Fund of the Ecolab Savings Plan (401(k) Plan) as of January 31, 2026. Includes 4.002 UNITS acquired since the reporting person's last report. (The 1,481.033 UNITS are the equivalent of approximately 2,715 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.