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

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-06-30 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: ECOLAB INC. (ECL) CIK: 0000031462 --- Reporting Owner --- Name: MacLennan David CIK: 0001498535 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-06-30 | Code: A (Grant or award) Shares: +130.18 | Price: $0.00 Shares Owned After: 25,380.66 | Ownership: D (Direct) Footnotes: [F1] Includes 20.47 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan. [Transaction #2] Security: Common Stock Date: 2026-06-30 | Code: A (Grant or award) Shares: +46.01 | Price: $278.46 Total Value: $12,811.85 Shares Owned After: 25,426.67 | Ownership: D (Direct) --- Holdings --- [Holding #1] Security: Common Stock Ownership: I (Indirect) [Holding #2] Security: Common Stock Ownership: I (Indirect) --- Footnotes (Complete Index) --- F1: Includes 20.47 shares acquired pursuant to a dividend reinvestment feature of the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan. --- Signature --- /s/ /s/ Corinne Lawson, as Attorney-in-Fact for David W. MacLennan (2026-07-02)