ECOLAB INC. (ECL) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-07-30 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: ECOLAB INC. (ECL) CIK: 0000031462 --- Reporting Owner --- Name: Kirkland Scott D CIK: 0001779234 Role: Officer (CHIEF FINANCIAL OFFICER) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-07-30 | Code: M (Exercise of derivative) Shares: +3,972 | Price: $117.73 Total Value: $467,623.56 Shares Owned After: 20,881.412 | Ownership: D (Direct) [Transaction #2] Security: Common Stock Date: 2026-07-30 | Code: S (Open market sale) Shares: -3,357 | Price: $276.96 Total Value: $929,754.72 Shares Owned After: 17,524.412 | Ownership: D (Direct) --- Derivative Transactions --- [Transaction #1] Security: Employee Stock Option (Right to Buy) Date: 2026-07-30 | Code: M (Exercise of derivative) Shares: -3,972 | Price: $0.00 Exercisable: N/A | Expires: 2026-12-07 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F2] Option granted under the Ecolab Inc. 2010 Stock Incentive Plan. The option became or becomes 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. --- Holdings --- [Holding #1] Security: Common Stock Ownership: I (Indirect) Footnotes: [F1] Number of UNITS in the Ecolab Stock Fund of the Ecolab Savings Plan (401(k) Plan) as of June 30, 2026. Includes 21.817 UNITS acquired since the reporting person's last report. (The 1,477.401 UNITS are the equivalent of approximately 2,710 SHARES of the issuer's Common Stock.) --- Footnotes (Complete Index) --- F1: Number of UNITS in the Ecolab Stock Fund of the Ecolab Savings Plan (401(k) Plan) as of June 30, 2026. Includes 21.817 UNITS acquired since the reporting person's last report. (The 1,477.401 UNITS are the equivalent of approximately 2,710 SHARES of the issuer's Common Stock.) F2: Option granted under the Ecolab Inc. 2010 Stock Incentive Plan. The option became or becomes 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. --- Signature --- /s/ /s/ Corinne Lawson, as Attorney-in-Fact for Scott D. Kirkland (2026-07-31)