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

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-05-22 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: ECOLAB INC. (ECL) CIK: 0000031462 --- Reporting Owner --- Name: Vautrinot Suzanne M CIK: 0001589791 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-05-22 | Code: M (Exercise of derivative) Shares: +2,000 | Price: $125.67 Total Value: $251,330.00 Shares Owned After: 13,651.22 | Ownership: D (Direct) [Transaction #2] Security: Common Stock Date: 2026-05-22 | Code: F (Payment of exercise/tax) Shares: -996 | Price: $252.27 Total Value: $251,257.93 Shares Owned After: 12,655.22 | Ownership: D (Direct) Footnotes: [F1] Reflects the reporting person's payment of the exercise price for a stock option issued in accordance with Rule 16b-3 by delivering or withholding shares of Ecolab common stock. [Transaction #3] Security: Common Stock Date: 2026-05-27 | Code: S (Open market sale) Shares: -1,004 | Price: $264.98 Total Value: $266,039.92 Shares Owned After: 11,651.22 | Ownership: D (Direct) --- Derivative Transactions --- [Transaction #1] Security: Non-Employee Stock Option (Right to Buy) Date: 2026-05-22 | Code: M (Exercise of derivative) Shares: -2,000 | Price: $0.00 Exercisable: N/A | Expires: 2027-05-04 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F2] 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. The date listed in the Date Exercisable column represents the first vesting date. --- Footnotes (Complete Index) --- F1: Reflects the reporting person's payment of the exercise price for a stock option issued in accordance with Rule 16b-3 by delivering or withholding shares of Ecolab common stock. F2: 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. The date listed in the Date Exercisable column represents the first vesting date. --- Signature --- /s/ /s/ Corinne Lawson, as Attorney-in-Fact for Suzanne M. Vautrinot (2026-05-27)