ECOLAB INC. — Director's Dealing 2026

Feb 25, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ECOLAB INC. (ECL)
CIK: 0000031462
Period of Report: 2026-02-24

Reporting Person: Beck Christophe (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-24	Common Stock	M	23833	$117.730	Acquired	110794.118	Direct
2026-02-24	Common Stock	S	18120	$307.316	Disposed	92674.118	Direct
2026-02-24	Common Stock	S	1880	$307.870	Disposed	90794.118	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-02-24	Employee Stock Option (Right to Buy)	$117.730	M	23833	Disposed	2026-12-07	Common Stock (23833)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1735.608	Indirect

Footnotes

F1: This transaction was executed in multiple trades at prices ranging from $306.77 to $307.76, 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.

F2: This transaction was executed in multiple trades at prices ranging from $307.77 to $307.95, 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. (The 1,735.608 UNITS are the equivalent of approximately 3,182 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 option shares on the third anniversary of the date of grant. The date listed is the first anniversary of the date of grant.