Ecolab (ECL) 4: McKibben Tracy B bought 2,300 shares of Common Stock at $11… (Feb 26, 2026)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-02-25 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: ECOLAB INC. (ECL) CIK: 0000031462 --- Reporting Owner --- Name: McKibben Tracy B CIK: 0001584119 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-02-25 | Code: M (Exercise of derivative) Shares: +2,300 | Price: $115.08 Total Value: $264,672.50 Shares Owned After: 12,622.58 | Ownership: D (Direct) [Transaction #2] Security: Common Stock Date: 2026-02-25 | Code: S (Open market sale) Shares: -1,265 | Price: $308.66 Total Value: $390,454.90 Shares Owned After: 11,357.58 | Ownership: D (Direct) --- Derivative Transactions --- [Transaction #1] Security: Non-Employee Stock Option (Right to Buy) Date: 2026-02-25 | Code: M (Exercise of derivative) Shares: -2,300 | Price: $0.00 Exercisable: N/A | Expires: 2026-05-05 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F1] 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; provided, however, that if a Change in Control of the Company (as that term is defined in the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan) will occur, then the option will become immediately exercisable in full. --- Footnotes (Complete Index) --- F1: 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; provided, however, that if a Change in Control of the Company (as that term is defined in the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan) will occur, then the option will become immediately exercisable in full. --- Signature --- /s/ /s/ Corinne Lawson, as Attorney-in-Fact for Tracy B. McKibben (2026-02-26)