ECOLAB INC. — Earnings Release 2026

Apr 28, 2026

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) April 28, 2026

ECOLAB INC.

(Exact name of registrant as specified in its charter)

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Delaware	​	1-9328	​	41-0231510
(State or other jurisdiction of incorporation)	​	(Commission File No.)	​	(IRS Employer Identification No.)

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1 Ecolab Place , Saint Paul , Minnesota	​	​	​	55102
(Address of principal executive offices)	​	​	​	(Zip Code)

Registrant’s telephone number, including area code 1- 800 - 232-6522

(Not applicable)

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

​ ​ ​	​	​	​	​
Title of each class	​	Trading symbol(s)	​	Name of each exchange on which registered
Common Stock, $1.00 par value	​	ECL	​	New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition .

On April 28, 2026, Ecolab Inc. (“Ecolab”) announced earnings for the first quarter ended March 31, 2026. A copy of the (i) News Release issued by Ecolab in connection with this report under Item 2.02 is furnished and attached as Exhibit (99.1) and (ii) Supplemental Data to be used in connection with the conference call to be held discussing the first quarter results is furnished and attached as Exhibit (99.2), each of which is incorporated by reference herein. Ecolab also will publish the attached exhibits on its website located at www.ecolab.com.

Cautionary Statements Regarding Forward Looking Information .

Statements contained in this Current Report on Form 8-K, including statements concerning Ecolab’s restructuring plan, may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are based on the current expectations of management of the Company. There are a number of risks and uncertainties that could cause actual results to differ materially from the forward-looking statements included in this report. In particular, the ultimate results of any restructuring initiative depend on a number of factors, including the development of final plans, the impact of local regulatory requirements regarding employee terminations, the time necessary to develop and implement the restructuring initiatives and the level of success achieved through such actions in improving competitiveness, efficiency and effectiveness. Additional risks and uncertainties that may affect operating results and business performance are set forth under Item 1A of our most recent Form 10-K, and the Company’s other public filings with the Securities and Exchange Commission. Ecolab does not undertake, and expressly disclaims, any duty to update any forward-looking statement whether as a result of new information, future events or changes in expectations, except as required by law.

Item 9.01 Financial Statements and Exhibits .

(d) Exhibits.

The following exhibits are furnished pursuant to Item 2.02 of Form 8-K and should not be deemed to be “filed” under the Securities Exchange Act of 1934.

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Exhibit No.	​	Description	​	Method Of Filing	​
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(99.1)	​	Ecolab Inc. News Release dated April 28, 2026 .	​	Filed herewith electronically.	​
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(99.2)	​	Supplemental Data for First Quarter dated April 28, 2026.	​	Filed herewith electronically.	​
​	​	​	​	​	​
(104)	​	Cover Page Interactive Data File.	​	Embedded within the Inline XBRL document.	​

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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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​	ECOLAB INC.
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Date: April 28, 2026	By:	/s/ Youhao Dong
​	​	Youhao Dong
​	​	Assistant Secretary

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