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) March 20, 2026

ECOLAB INC.

(Exact name of registrant as specified in its charter)

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

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 March 20, 2026, Ecolab Inc. (the “Company”) announced that it entered into a definitive agreement to acquire CoolIT Systems. The Company also updated its earnings guidance in the announcement. A copy of the News Release issued by the Company in connection with this report under Item 2.02 is furnished and attached as Exhibit (99.1), which is incorporated by reference herein.

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.


Exhibit No.	Description	Method Of Filing

(99.1)	Ecolab Inc. News Release dated March 20, 2026.	Filed herewith electronically.

(104)	Cover Page Interactive Data File.	Embedded within the Inline XBRL document.

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.

	ECOLAB INC.

Date: March 20, 2026	By:	/s/ Youhao Dong
		Youhao Dong
		Assistant Secretary

Ecolab Inc. filed SEC Form 8-K: Results of Operations and Financial Condition, Financial Statements and Exhibits