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

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-08-03 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: ECOLAB INC. (ECL) CIK: 0000031462 --- Reporting Owner --- Name: Bradway Jennifer J CIK: 0001902394 Role: Officer (SVP & CORPORATE CONTROLLER) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-08-03 | Code: M (Exercise of derivative) Shares: +6,457 Shares Owned After: 12,547.637 | Ownership: D (Direct) Footnotes: [F1] On August 3, 2022, the reporting person was granted 6,457 restricted stock units, vesting as to 100% of the units on the fourth anniversary of the date of grant. [F2] The total includes 32.363 shares resulting from automatic dividend reinvestment in transactions exempt pursuant to Rule 16a-11 under Section 16 of the Securities Exchange Act of 1934. [Transaction #2] Security: Common Stock Date: 2026-08-03 | Code: F (Payment of exercise/tax) Shares: -2,944.392 | Price: $278.79 Total Value: $820,867.05 Shares Owned After: 9,603.245 | Ownership: D (Direct) Footnotes: [F3] Reflects the reporting person's payment of minimum statutory tax obligations by withholding shares of Ecolab Common Stock incident to the vesting of restricted stock units in accordance with Rule 16b-3. --- Derivative Transactions --- [Transaction #1] Security: Restricted Stock Units Date: 2026-08-03 | Code: M (Exercise of derivative) Shares: -6,457 | Price: $0.00 Exercisable: N/A | Expires: 2026-08-03 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F4] Restricted stock units convert into common stock on a one-for-one basis. [F1] On August 3, 2022, the reporting person was granted 6,457 restricted stock units, vesting as to 100% of the units on the fourth anniversary of the date of grant. [F1] On August 3, 2022, the reporting person was granted 6,457 restricted stock units, vesting as to 100% of the units on the fourth anniversary of the date of grant. --- Footnotes (Complete Index) --- F1: On August 3, 2022, the reporting person was granted 6,457 restricted stock units, vesting as to 100% of the units on the fourth anniversary of the date of grant. F2: The total includes 32.363 shares resulting from automatic dividend reinvestment in transactions exempt pursuant to Rule 16a-11 under Section 16 of the Securities Exchange Act of 1934. F3: Reflects the reporting person's payment of minimum statutory tax obligations by withholding shares of Ecolab Common Stock incident to the vesting of restricted stock units in accordance with Rule 16b-3. F4: Restricted stock units convert into common stock on a one-for-one basis. --- Signature --- /s/ /s/ Corinne Lawson, as Attorney-in-Fact for Jennifer J. Bradway (2026-08-04)