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

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-06-11 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: ECOLAB INC. (ECL) CIK: 0000031462 --- Reporting Owner --- Name: Clark Benjamin M. CIK: 0002082984 Role: Officer (EVP - Global Supply Chain) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-06-11 | Code: P (Open market purchase) Shares: +1,000 | Price: $263.83 Total Value: $263,831.00 Shares Owned After: 1,082.581 | Ownership: D (Direct) Footnotes: [F1] This transaction was executed in multiple trades at prices ranging from $263.800 to $263.840, inclusive. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. --- Footnotes (Complete Index) --- F1: This transaction was executed in multiple trades at prices ranging from $263.800 to $263.840, inclusive. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. --- Signature --- /s/ /s/ Youhao Dong, as Attorney-in-Fact for Benjamin M. Clark (2026-06-15)