Ecolab, Inc.

Item 2.02 Results of Operations and Financial Condition . Ecolab Inc. (“Ecolab” or the “Company”) is providing as an exhibit to this Current Report on Form 8-K a table (Exhibit 99.1) with supplemental unaudited reportable segment information for the years ended December 31, 2025 and December 31, 2024 reflecting international operations at the fixed currency exchange rates established by Company management at the beginning of 2026. The exhibit also reflects changes to the Company’s segment reporting structure, including the movement of certain customers and cost allocations effective in the first quarter of 2026. The Company’s organizational structure consists of global business unit and market-based leadership teams. The Company’s operating segments follow its commercial and product-based activities and are based on engagement in business activities, availability of discrete financial information and review of operating results by the Chief Operating Decision Maker at the identified operating segment level. Effective January 1, 2026, the Company’s former Light & Heavy operating segment was divided into three new operating segments, Heavy Water, Light Water and High-Tech, which continue to remain in the Global Water reportable segment. After these changes, the Company has nine operating segments. The Company is also providing a table (Exhibit 99.2) with supplemental unaudited reportable segment information for each of the four quarters of 2025 and for the twelve months ended December 31, 2025, reflecting the changes noted above. Ecolab also will publish the attached exhibits on its website located at www.ecolab.com. The financial information in the tables represents a supplemental presentation of certain of Ecolab’s 2025 and 2024 reportable segment information as explained in this Current Report on Form 8-K and is not intended to replace the presentation of such information in Ecolab’s Quarterly Reports on Form 10-Q filed with respect to the first, second and third quarters of 2025 and Ecolab’s Annual Reports on Form 10-K filed with respect to the fiscal years ended December 31, 2025 and December 31, 2024. The information in this Current Report on Form 8-K, including the exhibits attached hereto, is furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section and shall not be deemed incorporated by reference into any registration statement or other document filed with the Securities and Exchange Commission, except as shall be expressly set forth by specific reference in such a filing.