ECL / Ecolab Inc. - SEC-Einreichungen, Jahresbericht, Proxy Statement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report ECOLAB INC. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report ECOLAB INC. (Exact name of registrant as specified in its charter) Delaware 1-9328 (State or other jurisdiction of incorporation or organization) (Commission File Number) 1 Ecolab Place, Saint Paul, Minnesota 55102 (Address of principal executive offices) (Zip Code) Jandeen Boone, Esq., Ge

CONFLICT MINERALS REPORT OF 2025 FORM SD SPECIALIZED DISCLOSURE REPORT ECOLAB INC.

Exhibit 1.01 CONFLICT MINERALS REPORT OF 2025 TO FORM SD SPECIALIZED DISCLOSURE REPORT OF ECOLAB INC. I.Introduction Except where the context otherwise requires, references in this Conflict Minerals Report to “Ecolab,” “Company,” “we” and “our” are to Ecolab Inc. and its subsidiaries, collectively. As used herein and consistent with the Conflict Minerals Rule (as such term is defined below), (1) “

$5,000,000,000 Ecolab Inc. $1,200,000,000 4.600% Notes due 2029 $900,000,000 4.800% Notes due 2031 $1,500,000,000 5.150% Notes due 2033 $1,400,000,000 5.350% Notes due 2036 Underwriting Agreement

Exhibit 1.1 $5,000,000,000 Ecolab Inc. $1,200,000,000 4.600% Notes due 2029 $900,000,000 4.800% Notes due 2031 $1,500,000,000 5.150% Notes due 2033 $1,400,000,000 5.350% Notes due 2036 Underwriting Agreement May 19, 2026 Citigroup Global Markets Inc. 388 Greenwich Street New York, New York 10013 Barclays Capital Inc. 745 Seventh Avenue New York, New York 10019 BofA Securities, Inc. One Bryant Park

ECOLAB INC. $1,200,000,000 4.600% Notes due 2029 $900,000,000 4.800% Notes due 2031 $1,500,000,000 5.150% Notes due 2033 $1,400,000,000 5.350% Notes due 2036 FIFTEENTH SUPPLEMENTAL INDENTURE Dated as of May 29, 2026 to Indenture dated as of January 1

Exhibit 4.2 ECOLAB INC. $5,000,000,000 $1,200,000,000 4.600% Notes due 2029 $900,000,000 4.800% Notes due 2031 $1,500,000,000 5.150% Notes due 2033 $1,400,000,000 5.350% Notes due 2036 FIFTEENTH SUPPLEMENTAL INDENTURE Dated as of May 29, 2026 to Indenture dated as of January 12, 2015 COMPUTERSHARE TRUST COMPANY, N.A. (AS SUCCESSOR TO WELLS FARGO BANK, NATIONAL ASSOCIATION) Trustee This FIFTEENTH S

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): May 29, 2026 ECOLAB INC. (Exact n

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): May 29, 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 Em

Security Type

Calculation of Filing Fee Tables S-3 ECOLAB INC. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effecti

Ecolab Inc. $1,200,000,000 4.600% Notes due 2029 $900,000,000 4.800% Notes due 2031 $1,500,000,000 5.150% Notes due 2033 $1,400,000,000 5.350% Notes due 2036

TABLE OF CONTENTS   Filed Pursuant to Rule 424(b)(5)    Registration No. 333-293635 PROSPECTUS SUPPLEMENT (To Prospectus dated February 23, 2026) $5,000,000,000 Ecolab Inc. $1,200,000,000 4.600% Notes due 2029 $900,000,000 4.800% Notes due 2031 $1,500,000,000 5.150% Notes due 2033 $1,400,000,000 5.350% Notes due 2036 Ecolab Inc. is offering $1,200,000,000 aggregate principal amount of 4.600% notes

Subject to Completion Preliminary Prospectus Supplement dated May 19, 2026

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

$5,000,000,000 Ecolab Inc. $1,200,000,000 4.600% Notes due 2029 $900,000,000 4.800% Notes due 2031 $1,500,000,000 5.150% Notes due 2033 $1,400,000,000 5.350% Notes due 2036 Pricing Term Sheet May 19, 2026

Filed Pursuant to Rule 433 Registration No. 333-293635 Supplementing the Preliminary Prospectus Supplement dated May 19, 2026 (To Prospectus dated February 23, 2026) $5,000,000,000 Ecolab Inc. $1,200,000,000 4.600% Notes due 2029 $900,000,000 4.800% Notes due 2031 $1,500,000,000 5.150% Notes due 2033 $1,400,000,000 5.350% Notes due 2036 Pricing Term Sheet May 19, 2026 Issuer: Ecolab Inc. Type of O

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) May 7, 2026 ECOLAB INC. (Exact nam

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) May 7, 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 Empl

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2026 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-9328 ECOLAB INC. (Exa

May 7, 2026

Exhibit (15.1) May 7, 2026 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We are aware that our report dated May 7, 2026 on our review of interim financial statements of Ecolab Inc., which appears in this Quarterly Report on Form 10-Q, is incorporated by reference in the Registration Statements on Form S-3 (Nos. 333-275302 and 333-293635) and Form S-8 (No

INTERNATIONAL RELOCATION LETTER

Exhibit (10.2) 1 Ecolab Place Saint Paul MN 55102 USA INTERNATIONAL RELOCATION LETTER 20 February 2026 Darrell Brown Naperville, IL, United States Dear Darrell, The following will provide an overview of relocation support related to your transfer from Naperville, IL, United States to Sydney, Australia. “Ecolab,” as used in this letter, refers to Ecolab Inc. and its wholly owned subsidiaries. ◾ Eco

Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to,

Exhibit 99.2 1 1 First Quarter 2026 Supplemental April 28, 2026 Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements regarding macroeconomic conditions and our financial and business performa

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

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

ECOLAB DELIVERS ACCELERATED SALES GROWTH AND DOUBLE-DIGIT EPS GROWTH REPORTED DILUTED EPS $1.52; ADJUSTED DILUTED EPS $1.70, +13% MAINTAINS 2026 ADJUSTED DILUTED EPS OUTLOOK: $8.43 - $8.63, +12% - 15%

Exhibit 99.1 News Release Investor Contact: Media Contact: Andrew Hedberg (651) 250-2185 Victoria Whitney (651) 250-4724 Andrew Pearson (651) 250-3654 ECOLAB DELIVERS ACCELERATED SALES GROWTH AND DOUBLE-DIGIT EPS GROWTH REPORTED DILUTED EPS $1.52; ADJUSTED DILUTED EPS $1.70, +13% MAINTAINS 2026 ADJUSTED DILUTED EPS OUTLOOK: $8.43 - $8.63, +12% - 15% FIRST QUARTER HIGHLIGHTS ● Ecolab delivered anot

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 10, 2026 ECOLAB INC. (Exact

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 10, 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

TERM CREDIT AGREEMENT dated as of April 10, 2026, ECOLAB INC., as Borrower, THE FINANCIAL INSTITUTIONS NAMED HEREIN, as Lenders, and CITIBANK, N.A., as Administrative Agent CITIBANK, N.A., as Sole Arranger and Sole Bookrunner

Exhibit 10.1 Execution Version TERM CREDIT AGREEMENT dated as of April 10, 2026, among ECOLAB INC., as Borrower, THE FINANCIAL INSTITUTIONS NAMED HEREIN, as Lenders, and CITIBANK, N.A., as Administrative Agent CITIBANK, N.A., as Sole Arranger and Sole Bookrunner TABLE OF CONTENTS Page ARTICLE 1 Definitions and Accounting Terms Section 1.01. Certain Defined Terms 1 Section 1.02. Computation of Time

ECOLAB INC. SUPPLEMENTAL REPORTABLE SEGMENT INFORMATION AND NON-GAAP RECONCILIATION 2025 REVISED SEGMENT DATA AT 2026 FIXED CURRENCY EXCHANGE RATES

Exhibit 99.2 ECOLAB INC. SUPPLEMENTAL REPORTABLE SEGMENT INFORMATION AND NON-GAAP RECONCILIATION 2025 REVISED SEGMENT DATA AT 2026 FIXED CURRENCY EXCHANGE RATES (unaudited) (millions) 2025 First Quarter Second Quarter Third Quarter Fourth Quarter Twelve Months Ended Ended Ended Ended Ended March 31 June 30 September 30 December 31 December 31 Net Sales Global Water $1,899.5 $2,014.9 $2,061.0 $2,13

ECOLAB INC. SUPPLEMENTAL REPORTABLE SEGMENT INFORMATION AND NON-GAAP RECONCILIATION

Exhibit 99.1 ECOLAB INC. SUPPLEMENTAL REPORTABLE SEGMENT INFORMATION AND NON-GAAP RECONCILIATION (unaudited) Year ended December 31 (millions) 2025 2024 Fixed Fixed Currency Currency Values at Rate Values at Values at Rate Values at 2025 Rates Other Change 2026 Rates 2025 Rates Other Change 2026 Rates Net Sales Global Water $7,679.9 $ - $427.8 $8,107.7 $7,483.4 $ - $420.4 $7,903.8 Global Instituti

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 27, 2026 ECOLAB INC. (Exact

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 27, 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 E

ARS

CONSISTENT, HIGH PERFORMANCE 2 025 was another record year for Ecolab. Thanks to our 48,000 associates, we delivered record sales, earnings per share, operating income margins and free cash flow by staying focused on what matters most: taking care of our customers and each other. This approach continues to drive strong, consistent growth across the company. Our team delivered strong performance ac

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

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 E

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Ru

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

Ecolab to Acquire CoolIT Systems, a Global Leader in Advanced Liquid Cooling for Next-Gen AI Data Centers Acquisition accelerates Ecolab’s sales growth by significantly expanding its Global High-Tech growth engine, creating an end-to-end fluid manage

Exhibit 99.1 Ecolab to Acquire CoolIT Systems, a Global Leader in Advanced Liquid Cooling for Next-Gen AI Data Centers Acquisition accelerates Ecolab’s sales growth by significantly expanding its Global High-Tech growth engine, creating an end-to-end fluid management and cooling platform for AI data centers ST. PAUL, Minn., March 20, 2026 — Ecolab announced today that it has entered into a definit

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) February 20, 2026 ECOLAB INC. (Exa

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) February 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.) (IR

ECOLAB APPOINTS DARRELL BROWN AS CO-COO, GLOBAL MARKETS AND GREG COOK AS CO-COO, GLOBAL BUSINESSES

Exhibit 99.1 News Release Ecolab Inc. 1 Ecolab Place St. Paul, Minnesota 55102 www.ecolab.com ECOLAB APPOINTS DARRELL BROWN AS CO-COO, GLOBAL MARKETS AND GREG COOK AS CO-COO, GLOBAL BUSINESSES ST. PAUL, Minn. – Feb. 25, 2026 – Ecolab Inc. has announced that to support its next phase of growth, it is dividing the chief operating officer role into two complementary positions to build high-performing

ECOLAB INC. 2001 NON-EMPLOYEE DIRECTOR STOCK OPTION AND DEFERRED COMPENSATION PLAN (as amended and restated effective as of August 1, 2013 and further amended as of May 5, 2016) DECLARATION OF AMENDMENT NO. 2

EXHIBIT (10.3)(iii) ECOLAB INC. 2001 NON-EMPLOYEE DIRECTOR STOCK OPTION AND DEFERRED COMPENSATION PLAN (as amended and restated effective as of August 1, 2013 and further amended as of May 5, 2016) DECLARATION OF AMENDMENT NO. 2 Pursuant to the amending power reserved to the Board of Directors of Ecolab Inc. (the “Company”) by section 14.1 of the Ecolab Inc. 2001 Non-Employee Director Stock Option

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-9328 ECOLAB INC. (E

  UNITED STATES  SECURITIES AND EXCHANGE COMMISSION  Washington, D.C. 20549

  Exhibit 25.1     UNITED STATES  SECURITIES AND EXCHANGE COMMISSION  Washington, D.C. 20549       FORM T-1  STATEMENT OF ELIGIBILITY  UNDER THE TRUST INDENTURE ACT OF 1939 OF A  CORPORATION DESIGNATED TO ACT AS TRUSTEE   CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2)  []       Computershare Trust Company, National Association  (Exact name of trustee as

SUBSIDIARIES OF ECOLAB INC.

EXHIBIT (21.1) SUBSIDIARIES OF ECOLAB INC. Entity Name State or Other Jurisdiction of Incorporation NLC Process and Water Services SARL Algeria Ecolab (Antigua) Ltd. Antigua & Barbuda Anios America S.A. Argentina Ecolab Argentina S.R.L. Argentina Ecolab Services Argentina S.R.L. Argentina Ecolab (Aruba) N.V. Aruba Ecolab (Fiji) Pty Limited Australia Ecolab AU2 Pty Ltd Australia Ecolab AU3 Pty Ltd

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) February 18, 2026 ECOLAB INC. (Exa

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) February 18, 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.) (IR

Security Type

Calculation of Filing Fee Tables S-3 ECOLAB INC. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effecti

MASTER AGREEMENT RELATING TO PERIODIC OPTIONS GRANTED UNDER THE ECOLAB INC. 2001 NON-EMPLOYEE DIRECTOR STOCK OPTION AND DEFERRED COMPENSATION PLAN

EXHIBIT (10.3)(iv) MASTER AGREEMENT RELATING TO PERIODIC OPTIONS GRANTED UNDER THE ECOLAB INC. 2001 NON-EMPLOYEE DIRECTOR STOCK OPTION AND DEFERRED COMPENSATION PLAN THIS AGREEMENT is entered into and effective as of , by and between Ecolab Inc. (the “Company”) and (the “Optionee”). The Company has adopted the Ecolab Inc. 2001 Non-Employee Director Stock Option and Deferred Compensation Plan, as a

As filed with the Securities and Exchange Commission on February 23, 2026.

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on February 23, 2026.

POWER OF ATTORNEY

EXHIBIT (24.1) POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned, a director of Ecolab Inc., a Delaware corporation, does hereby make, nominate and appoint CHRISTOPHE BECK, JANDEEN M. BOONE and YOUHAO DONG, and each of them, to be my attorney-in-fact, with full power and authority to sign his name to the Annual Report on Form 10-K of Ecolab Inc. for the fiscal year ended Decem

DESCRIPTION OF ECOLAB INC. COMMON STOCK

EXHIBIT (4.29) DESCRIPTION OF ECOLAB INC. COMMON STOCK The following description of Ecolab common stock, which is registered under Section 12 of the Securities Exchange Act of 1934, as amended, is a summary and does not purport to be complete. It is subject to and qualified in its entirety by reference to Ecolab’s Restated Certificate of Incorporation (the “Certificate of Incorporation”) and Ecola

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) February 10, 2026 ECOLAB INC. (Exa

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) February 10, 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.) (IR

Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to,

Exhibit 99.2 1 February 10, 2026 ECOLAB Fourth Quarter 2025 Supplemental Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements regarding macroeconomic conditions and our financial and business

ECOLAB ANNOUNCES RECORD FOURTH QUARTER AND STRONG 2026 OUTLOOK REPORTED DILUTED EPS $1.98; ADJUSTED DILUTED EPS $2.08, +15% 2026 ADJUSTED DILUTED EPS OUTLOOK: $8.43 - $8.63, +12% - 15%

Exhibit 99.1 News Release Investor Contact: Media Contact: Andrew Hedberg (651) 250-2185 Victoria Whitney (651) 250-4724 Andrew Pearson (651) 250-3654 ECOLAB ANNOUNCES RECORD FOURTH QUARTER AND STRONG 2026 OUTLOOK REPORTED DILUTED EPS $1.98; ADJUSTED DILUTED EPS $2.08, +15% 2026 ADJUSTED DILUTED EPS OUTLOOK: $8.43 - $8.63, +12% - 15% FOURTH QUARTER HIGHLIGHTS ● Ecolab delivered another quarter of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-9328 ECOLAB INC.

October 30, 2025

Exhibit (15.1) October 30, 2025 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We are aware that our report dated October 30, 2025 on our review of interim financial statements of Ecolab Inc., which appears in this Quarterly Report on Form 10-Q, is incorporated by reference in the Registration Statements on Form S-3 (No. 333-275302) and Form S-8 (Nos. 2‑9

Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to,

Exhibit 99.2 1 ECOLAB Third Quarter 2025 Supplemental Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements regarding macroeconomic conditions and our financial and business performance and pr

ECOLAB DELIVERS ANOTHER STRONG QUARTER OF DOUBLE-DIGIT EPS GROWTH REPORTED DILUTED EPS $2.05; ADJUSTED DILUTED EPS $2.07, +13% 2025 ADJUSTED DILUTED EPS OUTLOOK: $7.48 - $7.58, +12% - 14%

Exhibit 99.1 News Release Investor Contact: Media Contact: Andrew Hedberg (651) 250-2185 Nigel Glennie (651) 250-2576 Andrew Pearson (651) 250-3654 ECOLAB DELIVERS ANOTHER STRONG QUARTER OF DOUBLE-DIGIT EPS GROWTH REPORTED DILUTED EPS $2.05; ADJUSTED DILUTED EPS $2.07, +13% 2025 ADJUSTED DILUTED EPS OUTLOOK: $7.48 - $7.58, +12% - 14% THIRD QUARTER HIGHLIGHTS ● Ecolab delivered another strong quart

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) October 28, 2025 ECOLAB INC. (Exac

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) October 28, 2025 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

  ECOLAB INC.

  Exhibit 4.2     ECOLAB INC.   $500,000,000 5.000% Notes due 2035   FOURTEENTH SUPPLEMENTAL INDENTURE   Dated as of August 27, 2025 to   Indenture dated as of January 12, 2015   COMPUTERSHARE TRUST COMPANY, N.A. (AS SUCCESSOR TO WELLS FARGO BANK, NATIONAL ASSOCIATION)   Trustee         This FOURTEENTH SUPPLEMENTAL INDENTURE (this “Fourteenth Supplemental Indenture”) dated as of August 27, 2025, i

Ecolab Inc.

  Exhibit 1.1   Ecolab Inc.   $500,000,000 5.000% Notes due 2035   Underwriting Agreement   August 18, 2025   Citigroup Global Markets Inc. 388 Greenwich Street New York, New York 10013   J.P. Morgan Securities LLC 383 Madison Avenue New York, New York 10179   Wells Fargo Securities, LLC 550 South Tryon Street, 5th Floor Charlotte, North Carolina 28202   As representatives of the several underwrit

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): August 18, 2025 ECOLAB INC. (Exac

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): August 18, 2025 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

Ecolab Inc. 5.000% Notes due 2035

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(2)  Registration No. 333-275302 \ PROSPECTUS SUPPLEMENT (To Prospectus dated November 3, 2023) $500,000,000 Ecolab Inc. 5.000% Notes due 2035 Ecolab Inc. is offering $500,000,000 aggregate principal amount of 5.000% notes due 2035 (the “notes”). The notes will bear interest at a rate of 5.000% per year and will mature on September 1, 2035. Interest

Security Type

Calculation of Filing Fee Tables S-3 ECOLAB INC. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effecti

Subject to Completion Preliminary Prospectus Supplement dated August 18, 2025

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

Ecolab Inc. $500,000,000 5.000% Notes due 2035 Pricing Term Sheet August 18, 2025

Filed Pursuant to Rule 433 Registration No. 333-275302 Supplementing the Preliminary Prospectus Supplement dated August 18, 2025 (To Prospectus dated November 3, 2023) Ecolab Inc. $500,000,000 5.000% Notes due 2035 Pricing Term Sheet August 18, 2025 Issuer: Ecolab Inc. Type of Offering: SEC Registered (No. 333-275302) Anticipated Ratings*: A3 (Stable outlook) by Moody’s Investors Service, Inc. A-

Letter regarding unaudited interim financial information.

Exhibit (15.1) August 7, 2025 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We are aware that our report dated August 7, 2025 on our review of interim financial statements of Ecolab Inc., which appears in this Quarterly Report on Form 10-Q, is incorporated by reference in the Registration Statements on Form S-3 (No. 333-275302) and Form S-8 (Nos. 2‑90702

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-9328 ECOLAB INC. (Exac

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) August 6, 2025 ECOLAB INC. (Exact

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) August 6, 2025 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 E

Ecolab Inc.

Exhibit 99.1 News Release Ecolab Inc. 1 Ecolab Place St. Paul, Minnesota 55102 www.ecolab.com ECOLAB APPOINTS JULIE WHALEN TO BOARD OF DIRECTORS ST. PAUL, Minn. – Aug. 06, 2025 – The board of directors of Ecolab Inc. has appointed Julie P. Whalen to the Ecolab Board of Directors as an independent director. Ms. Whalen was also appointed to the Audit and Finance Committees of the Board. Ms. Whalen i

ECOLAB DELIVERS ANOTHER STRONG QUARTER OF DOUBLE-DIGIT EPS GROWTH REPORTED DILUTED EPS $1.84; ADJUSTED DILUTED EPS $1.89, +13% MAINTAINS 2025 ADJUSTED DILUTED EPS OUTLOOK: $7.42 - $7.62, +12% - 15%

Exhibit 99.1 News Release Investor Contact: Media Contact: Andrew Hedberg (651) 250-2185 Nigel Glennie (651) 250-2576 Andrew Pearson (651) 250-3654 ECOLAB DELIVERS ANOTHER STRONG QUARTER OF DOUBLE-DIGIT EPS GROWTH REPORTED DILUTED EPS $1.84; ADJUSTED DILUTED EPS $1.89, +13% MAINTAINS 2025 ADJUSTED DILUTED EPS OUTLOOK: $7.42 - $7.62, +12% - 15% SECOND QUARTER HIGHLIGHTS ● Ecolab delivered another s

Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to,

Exhibit 99.2 1 ECOLAB Second Quarter 2025 Supplemental Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements regarding macroeconomic conditions and our financial and business performance and p

Financial Statements and Exhibits, Results of Operations and Financial Condition

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) July 29, 2025 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 Em

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

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) July 14, 2025 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 Em

EX-99.25

NOTIFICATION OF THE REMOVAL FROM LISTING AND REGISTRATION OF THE STATED SECURITIES The New York Stock Exchange hereby notifies the SEC of its intention to remove the entire class of the stated securities from listing and registration on the Exchange at the opening of business on July 21, 2025, pursuant to the provisions of Rule 12d2-2 (a).

LETTER

July 1, 2025 Scott Kirkland Chief Financial Officer Ecolab, Inc. 1 Ecolab Place St. Paul, MN 55102 Re: Ecolab, Inc. Form 10-K for the fiscal year ended December 31, 2024 Filed February 21, 2025 File No. 001-09328 Dear Scott Kirkland: We have completed our review of your filing. We remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, not

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K (Mark One) ⌧ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ◻ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-09328 A. Full tit

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K (Mark One) ⌧ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ◻ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-09328 A. Full tit

***

1 Ecolab Place St. Paul MN 55102 USA June 13, 2025 Mr. Michael Fay & Ms. Li Xiao United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549-7010 Re: Ecolab Inc. Form 10-K for fiscal year ended December 31, 2024 Filed on February 21, 2025 File No. 001-09328 Dear Mr. Michael Fay & Ms. Li Xiao: This letter is written in response to the S

Thirteenth Supplemental Indenture, dated as of June 5, 2025, between Ecolab Inc. and Computershare Trust Company, N.A.

  Exhibit 4.2      ECOLAB INC.   $500,000,000 4.300% Notes due 2028   THIRTEENTH SUPPLEMENTAL INDENTURE   Dated as of June 5, 2025 to   Indenture dated as of January 12, 2015   COMPUTERSHARE TRUST COMPANY, N.A. (AS SUCCESSOR TO WELLS FARGO BANK, NATIONAL ASSOCIATION)   Trustee         This THIRTEENTH SUPPLEMENTAL INDENTURE (this “Thirteenth Supplemental Indenture”) dated as of June 5, 2025, is bet

Underwriting Agreement, dated as of May 27, 2025, by and among Ecolab Inc. and Barclays Capital Inc., BofA Securities, Inc. and Santander US Capital Markets LLC, as representatives of the several underwriters named therein.

Exhibit 1.1 Ecolab Inc. $500,000,000 4.300% Notes due 2028 Underwriting Agreement May 27, 2025 Barclays Capital Inc. 745 Seventh Avenue New York, New York 10019 BofA Securities, Inc. One Bryant Park New York, New York 10036 Santander US Capital Markets LLC 437 Madison Avenue New York, New York 10022 As representatives of the several underwriters named in Schedule I hereto Ladies and Gentlemen: Eco

Financial Statements and Exhibits, Other Events

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): June 5, 2025 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 Em

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report ECOLAB INC. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report ECOLAB INC. (Exact name of registrant as specified in its charter) Delaware 1-9328 (State or other jurisdiction of incorporation or organization) (Commission File Number) 1 Ecolab Place, Saint Paul, Minnesota 55102 (Address of principal executive offices) (Zip Code) Jandeen Boone, Esq., Ge

LETTER

May 30, 2025 Scott Kirkland Chief Financial Officer Ecolab, Inc. 1 Ecolab Place St. Paul, MN 55102 Re: Ecolab, Inc. Form 10-K for the fiscal year ended December 31, 2024 Filed February 21, 2025 Response Dated May 7, 2025 File No. 001-09328 Dear Scott Kirkland: We have reviewed your May 7, 2025 response to our comment letter and have the following comments. Please respond to this letter within ten

Conflict Minerals Report for the reporting period from January 1, 2024 to December 31, 2024.

Exhibit 1.01 CONFLICT MINERALS REPORT OF 2024 TO FORM SD SPECIALIZED DISCLOSURE REPORT OF ECOLAB INC. I.Introduction Except where the context otherwise requires, references in this Conflict Minerals Report to “Ecolab,” “Company,” “we” and “our” are to Ecolab Inc. and its subsidiaries, collectively. As used herein and consistent with the Conflict Minerals Rule (as such term is defined below), (1) “

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 ECOLAB INC. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing F

Ecolab Inc. 4.300% Notes due 2028

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(2)  Registration No. 333-275302 PROSPECTUS SUPPLEMENT (To Prospectus dated November 3, 2023) $500,000,000 Ecolab Inc. 4.300% Notes due 2028 Ecolab Inc. is offering $500,000,000 aggregate principal amount of 4.300% notes due 2028 (the “notes”). The notes will bear interest at a rate of 4.300% per year and will mature on June 15, 2028. Interest on the

Ecolab Inc. $500,000,000 4.300% Notes due 2028 Pricing Term Sheet May 27, 2025

Filed Pursuant to Rule 433 Registration No. 333-275302 Supplementing the Preliminary Prospectus Supplement dated May 27, 2025 (To Prospectus dated November 3, 2023) Ecolab Inc. $500,000,000 4.300% Notes due 2028 Pricing Term Sheet May 27, 2025 Issuer: Ecolab Inc. Type of Offering: SEC Registered (No. 333-275302) Anticipated Ratings*: A3 (Stable outlook) by Moody’s Investors Service, Inc. A- (Stabl

Subject to Completion Preliminary Prospectus Supplement dated May 27, 2025

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

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) May 7, 2025 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 Empl

ECOLAB ANNUAL MEETING RESULTS ANNOUNCED

Exhibit (99.2) News Release Ecolab Inc. 1 Ecolab Place St. Paul, Minnesota 55102 www.ecolab.com ECOLAB ANNUAL MEETING RESULTS ANNOUNCED ST. PAUL, Minn. – May 8, 2025 – Ecolab Inc. announced today at its annual meeting of stockholders that the slate of thirteen director nominees named in the company’s proxy statement was elected for a one-year term ending at its annual meeting of stockholders in Ma

Restated Certificate of Incorporation of Ecolab Inc., as amended and in effect as of May 8, 2025.

Exhibit (3.1) RESTATED CERTIFICATE OF INCORPORATION OF ECOLAB INC. Ecolab Inc., a corporation duly organized and existing under the General Corporation Law of the State of Delaware, does hereby certify that: 1. The name of the corporation is Ecolab Inc. (the “Corporation”). The original Certificate of Incorporation was filed on February 18, 1924, with the Delaware Secretary of State under the name

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 18, 2025 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.) (

ECOLAB APPOINTS MARION GROSS TO BOARD OF DIRECTORS

Exhibit (99.1) News Release Ecolab Inc. 1 Ecolab Place St. Paul, Minnesota 55102 www.ecolab.com ECOLAB APPOINTS MARION GROSS TO BOARD OF DIRECTORS ST. PAUL, Minn. – May 8, 2025 – The board of directors of Ecolab Inc. has appointed Marion Gross, previously Executive Vice President and Global Chief Supply Chain Officer at McDonalds, to the Ecolab board as an independent director and member of the Co

Letter regarding unaudited interim financial information.

Exhibit (15.1) May 8, 2025 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We are aware that our report dated May 8, 2025 on our review of interim financial statements of Ecolab Inc., which appears in this Quarterly Report on Form 10-Q, is incorporated by reference in the Registration Statements on Form S-3 (No. 333-275302) and Form S-8 (Nos. 2‑90702; 33‑1

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-9328 ECOLAB INC. (Exa

ECOLAB INC. 1 Ecolab Place St. Paul, Minnesota 55102 May 7, 2025

ECOLAB INC. 1 Ecolab Place St. Paul, Minnesota 55102 May 7, 2025 Mr. Michael Fay & Ms. Li Xiao United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549-7010 Re: Ecolab Inc. Form 10-K for fiscal year ended December 31, 2024 Filed on February 21, 2025 File No. 001-09328 Dear Mr. Michael Fay & Ms. Li Xiao: This letter is written in res

ECOLAB DELIVERS CONTINUED DOUBLE-DIGIT EPS GROWTH REPORTED DILUTED EPS $1.41; ADJUSTED DILUTED EPS $1.50, +12% MAINTAINS 2025 ADJUSTED DILUTED EPS OUTLOOK: $7.42 - $7.62, +12% - 15%

Exhibit 99.1 News Release Investor Contact: Media Contact: Andrew Hedberg (651) 250-2185 Nigel Glennie (651) 250-2576 Cairn Clark (651) 250-2291 ECOLAB DELIVERS CONTINUED DOUBLE-DIGIT EPS GROWTH REPORTED DILUTED EPS $1.41; ADJUSTED DILUTED EPS $1.50, +12% MAINTAINS 2025 ADJUSTED DILUTED EPS OUTLOOK: $7.42 - $7.62, +12% - 15% FIRST QUARTER HIGHLIGHTS ● Delivered another strong quarter of double-dig

Financial Statements and Exhibits, Results of Operations and Financial Condition

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 29, 2025 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 E

Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to,

Exhibit 99.2 1 ECOLAB First Quarter 2025 Supplemental Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements regarding macroeconomic conditions and our financial and business performance and pr

LETTER

April 28, 2025 Scott Kirkland Chief Financial Officer Ecolab, Inc. 1 Ecolab Place St. Paul, MN 55102 Re: Ecolab, Inc. Form 10-K for the fiscal year ended December 31, 2024 Filed February 21, 2025 Response Dated April 17, 2025 File No. 001-09328 Dear Scott Kirkland: We have reviewed your April 17, 2025 response to our comment letter and have the following comment. Please respond to this letter with

ECOLAB INC. 1 Ecolab Place St. Paul, Minnesota 55102 April 17, 2025

ECOLAB INC. 1 Ecolab Place St. Paul, Minnesota 55102 April 17, 2025 Mr. Michael Fay & Ms. Li Xiao United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549-7010 Re: Ecolab Inc. Form 10-K for fiscal year ended December 31, 2024 Filed on February 21, 2025 File No. 001-09328 Dear Mr. Michael Fay & Ms. Li Xiao: This letter is written in

LETTER

April 7, 2025 Scott Kirkland Chief Financial Officer Ecolab, Inc. 1 Ecolab Place St. Paul, MN 55102 Re: Ecolab, Inc. Form 10-K for the fiscal year ended December 31, 2024 Filed February 21, 2025 File No. 001-09328 Dear Scott Kirkland: We have limited our review of your filing to the financial statements and related disclosures and have the following comments. Please respond to this letter within t

Fourth Amended and Restated $2.0 Billion Multicurrency Credit Agreement, dated as of March 24, 2025, among Ecolab Inc., the lenders party thereto, the issuing lenders party thereto and Bank of America, N.A., as administrative agent and swing line bank.

Exhibit (10.1) Execution Version CUSIP: 27887LAZ7 CUSIP: 27887LBA1 FOURTH AMENDED AND RESTATED U.S. $2,000,000,000 MULTICURRENCY CREDIT AGREEMENT Dated as of March 24, 2025 Among ECOLAB INC., as a Borrower and as Guarantor, THE FINANCIAL INSTITUTIONS NAMED HEREIN, as Banks, THE FINANCIAL INSTITUTIONS NAMED HEREIN, as Issuing Banks, BANK OF AMERICA, N.A., as Administrative Agent and Swing Line Bank

ECOLAB INC. SUPPLEMENTAL REPORTABLE SEGMENT INFORMATION AND NON-GAAP RECONCILIATION

Exhibit 99.1 ECOLAB INC. SUPPLEMENTAL REPORTABLE SEGMENT INFORMATION AND NON-GAAP RECONCILIATION (unaudited) Year ended December 31 (millions) 2024 2023 Fixed Fixed Currency Currency Values at Rate Values at Values at Rate Values at 2024 Rates Other Change 2025 Rates 2024 Rates Other Change 2025 Rates Net Sales Global Water $7,857.2 ($1.2) ($372.6) $7,483.4 $7,640.5 ($1.0) ($355.4) $7,284.1 Global

Financial Statements and Exhibits, Results of Operations and Financial Condition

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 28, 2025 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 E

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

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 24, 2025 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

ECOLAB INC. SUPPLEMENTAL REPORTABLE SEGMENT INFORMATION AND NON-GAAP RECONCILIATION 2024 REVISED SEGMENT DATA AT 2025 FIXED CURRENCY EXCHANGE RATES

Exhibit 99.2 ECOLAB INC. SUPPLEMENTAL REPORTABLE SEGMENT INFORMATION AND NON-GAAP RECONCILIATION 2024 REVISED SEGMENT DATA AT 2025 FIXED CURRENCY EXCHANGE RATES (unaudited) (millions) 2024 First Quarter Second Quarter Third Quarter Fourth Quarter Twelve Months Ended Ended Ended Ended Ended March 31 June 30 September 30 December 31 December 31 Net Sales Global Water $1,755.0 $1,863.2 $1,897.6 $1,96

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Ru

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

ARS

PERFORMANCE. GROWTH. INNOV A TION. ANNUAL REPORT 2024 PERFORMANCE. GROWTH. INNOVATION. his was a record-breaking year for Ecolab. Thanks to the best sales and service team in the business, we delivered record sales, record adjusted earnings per share, record operating income margins and record free cash flow by taking care of our customers. Our team’s unparalleled reach and unique capabilities hav

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Ru

Description of Securities.

EXHIBIT (4.27) DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 Ecolab Inc., a Delaware corporation (“Ecolab,” “we,” “our,” “us,” “the Company”), has two classes of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended: (i) its common stock; $1.00 par value per share and (ii) its 2.625% Euro Note

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-9328 ECOLAB INC. (E

Powers of Attorney.

EXHIBIT (24.1) POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned, a director of Ecolab Inc., a Delaware corporation, does hereby make, nominate and appoint CHRISTOPHE BECK, JANDEEN M. BOONE and THERESA E. CORONA, and each of them, to be my attorney-in-fact, with full power and authority to sign his name to the Annual Report on Form 10-K of Ecolab Inc. for the fiscal year ended

List of Subsidiaries.

SUBSIDIARIES OF ECOLAB INC. EXHIBIT (21.1) Entity Name State or Other Jurisdiction of Incorporation NLC Process and Water Services SARL Algeria Ecolab (Antigua) Ltd. Antigua & Barbuda Anios America S.A. Argentina Ecolab Argentina S.R.L. Argentina Ecolab Services Argentina S.R.L. Argentina Ecolab (Aruba) N.V. Aruba Ecolab (Fiji) Pty Limited Australia Ecolab AU2 Pty Ltd Australia Ecolab AU3 Pty Ltd

Amendment No. 1 to Ecolab Inc. 2023 Stock Incentive Plan, adopted December 4, 2024.

EXHIBIT (10.14(ii)) AMENDMENT NO. 1 TO ECOLAB INC. 2023 STOCK INCENTIVE PLAN WHEREAS, Ecolab Inc. (the “Company”) adopted the 2023 Stock Incentive Plan, effective as of May 4, 2023 (the “Plan”); WHEREAS, the Company wishes to adopt changes to the Plan with respect to the definition of Cause; NOW THEREFORE, pursuant to the amending power reserved to the Company’s Board of Directors by Section 19 of

Ecolab Inc. Global Insider Trading Policy, effective December 5, 2024.

Exhibit 19.1 EXHIBIT (19.1) ECOLAB POLICY Revised December 2024 GLOBAL INSIDER TRADING POLICY Global Insider Trading Policy | 2 ECOLAB POLICY Table of Contents Purpose Scope Policy Explanation of Key Terms Compliance Questions and Reporting Exceptions Versions Global Insider Trading Policy | 3 ECOLAB POLICY Purpose The purpose of this policy is to provide guidelines with respect to transactions in

Description of Ecolab Management Incentive Plan.

Exhibit (10.12) DESCRIPTION OF ECOLAB INC. MANAGEMENT INCENTIVE PLAN Ecolab Inc. (“Ecolab”, the “Company”, “we” and “our”) maintains an annual cash incentive plan for executives that is designed to motivate executives to achieve annual business and individual goals. This plan is referred to as the Management Incentive Plan (“MIP”). The MIP is not set forth in a formal plan document. Set forth belo

ECOLAB APPOINTS MICHEL DOUKERIS TO BOARD OF DIRECTORS

Exhibit 99.1 News Release Ecolab Inc. 1 Ecolab Place St. Paul, Minnesota 55102 www.ecolab.com ECOLAB APPOINTS MICHEL DOUKERIS TO BOARD OF DIRECTORS ST. PAUL, Minn. – Feb. 20, 2025 – The board of directors of Ecolab Inc. has appointed Michel Doukeris, Chief Executive Officer of AB InBev, to the Ecolab board as an independent director, effective February 20, 2025. “Michel's experience as the CEO of

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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) February 18, 2025 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.) (IR

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) February 11, 2025 ECOLAB INC. (Exa

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) February 11, 2025 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.) (IR

ECOLAB DELIVERS STRONG FOURTH QUARTER AND RECORD 2024 PERFORMANCE REPORTED DILUTED EPS $1.66; ADJUSTED DILUTED EPS $1.81, +17% 2025 ADJUSTED DILUTED EPS OUTLOOK: $7.42 - $7.62, +12% - 15%

Exhibit 99.1 News Release Investor Contact: Media Contact: Andrew Hedberg (651) 250-2185 Nigel Glennie (651) 250-2576 Cairn Clark (651) 250-2291 ECOLAB DELIVERS STRONG FOURTH QUARTER AND RECORD 2024 PERFORMANCE REPORTED DILUTED EPS $1.66; ADJUSTED DILUTED EPS $1.81, +17% 2025 ADJUSTED DILUTED EPS OUTLOOK: $7.42 - $7.62, +12% - 15% FOURTH QUARTER HIGHLIGHTS ● Reported sales $4.0 billion, +2% versus

Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to,

Exhibit 99.2 1 ECOLAB Fourth Quarter 2024 Supplemental Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements regarding macroeconomic conditions and our financial and business performance and p

Letter regarding unaudited interim financial information.

Exhibit (15.1) October 31, 2024 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We are aware that our report dated October 31, 2024 on our review of interim financial statements of Ecolab Inc., which appears in this Quarterly Report on Form 10-Q, is incorporated by reference in the Registration Statements on Form S-3 (Registration No. 333-275302) and Form

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-9328 ECOLAB INC.

Financial Statements and Exhibits, Results of Operations and Financial Condition

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) October 29, 2024 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

ECOLAB DELIVERS CONTINUED STRONG GROWTH IN THE THIRD QUARTER REPORTED DILUTED EPS $2.58; ADJUSTED DILUTED EPS $1.83, +19% INCREASED 2024 ADJUSTED DILUTED EPS OUTLOOK: $6.60 - $6.70, +27% - 29%

Exhibit 99.1 News Release Investor Contact: Media Contact: Andrew Hedberg (651) 250-2185 Nigel Glennie (651) 250-2576 Cairn Clark (651) 250-2291 ECOLAB DELIVERS CONTINUED STRONG GROWTH IN THE THIRD QUARTER REPORTED DILUTED EPS $2.58; ADJUSTED DILUTED EPS $1.83, +19% INCREASED 2024 ADJUSTED DILUTED EPS OUTLOOK: $6.60 - $6.70, +27% - 29% THIRD QUARTER HIGHLIGHTS ● Reported sales $4.0 billion, +1% ve

Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to,

Exhibit 99.2 1 ECOLAB Third Quarter 2024 Supplemental Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements regarding macroeconomic conditions and our financial and business performance and pr

As filed with the Securities and Exchange Commission on October 15, 2024

As filed with the Securities and Exchange Commission on October 15, 2024 Registration No.

As filed with the Securities and Exchange Commission on October 15, 2024

As filed with the Securities and Exchange Commission on October 15, 2024 Registration No.

As filed with the Securities and Exchange Commission on October 15, 2024

As filed with the Securities and Exchange Commission on October 15, 2024 Registration No.

As filed with the Securities and Exchange Commission on October 15, 2024

As filed with the Securities and Exchange Commission on October 15, 2024 Registration No.

Letter Regarding Unaudited Interim Financial Information

EXHIBIT 15.1 August 2, 2024 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We are aware that our reports dated May 2, 2024 and August 2, 2024, on our review of interim financial information of Ecolab Inc., which are included in the Company’s Quarterly Reports on Form 10-Q for the quarters ended March 31, 2024 and June 30, 2024, respectively, are incorpora

Powers of Attorney.

EXHIBIT 24.1 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, That the undersigned, a Director of Ecolab Inc., a Delaware corporation (“Corporation”), does hereby make, nominate and appoint CHRISTOPHE BECK, JANDEEN M. BOONE and THERESA E. CORONA, and each of them, individually, to be my attorney-in-fact, with full power and authority to sign their name to a Registration Statement on Form S-8 rela

Filing Fee Table.

Calculation of Filing Fee Tables S-8 ECOLAB INC. Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee 1 Debt Deferred Compensation Obligations Other $ 30,000,000.00 0.0001476 $ 4,428.00 Total Offering Amounts: $ 30,000,000.00 $ 4,42

Letter regarding unaudited interim financial information.

Exhibit (15.1) August 2, 2024 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We are aware that our report dated August 2, 2024 on our review of interim financial statements of Ecolab Inc., which appears in this Quarterly Report on Form 10-Q, is incorporated by reference in the Registration Statements on Form S-3 (Registration No. 333-275302) and Form S-8

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-9328 ECOLAB INC. (Exac

As filed with the Securities and Exchange Commission on August 2, 2024

As filed with the Securities and Exchange Commission on August 2, 2024 Registration No.

ECOLAB DELIVERS CONTINUED STRONG PERFORMANCE IN THE SECOND QUARTER REPORTED DILUTED EPS $1.71; ADJUSTED DILUTED EPS $1.68, +35% INCREASED 2024 ADJUSTED DILUTED EPS OUTLOOK: $6.50 - $6.70, +25% - 29%

Exhibit 99.1 News Release Investor Contact: Media Contact: Andrew Hedberg (651) 250-2185 Nigel Glennie (651) 250-2576 Cairn Clark (651) 250-2291 ECOLAB DELIVERS CONTINUED STRONG PERFORMANCE IN THE SECOND QUARTER REPORTED DILUTED EPS $1.71; ADJUSTED DILUTED EPS $1.68, +35% INCREASED 2024 ADJUSTED DILUTED EPS OUTLOOK: $6.50 - $6.70, +25% - 29% SECOND QUARTER HIGHLIGHTS ● Reported sales $4.0 billion,

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) July 30, 2024 ECOLAB INC. (Exact n

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) July 30, 2024 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 Em

Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to,

Exhibit 99.2 1 ECOLAB Second Quarter 2024 Supplemental Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements regarding delivered product costs, and demand; our financial and business performan

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K (Mark One) ⌧ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ◻ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-09328 A. Full tit

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K (Mark One) ⌧ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ◻ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-09328 A. Full tit

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report ECOLAB INC. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report ECOLAB INC. (Exact name of registrant as specified in its charter) Delaware 1-9328 (State or other jurisdiction of incorporation or organization) (Commission File Number) 1 Ecolab Place, Saint Paul, Minnesota 55102 (Address of principal executive offices) (Zip Code) Jandeen Boone, Esq., In

Conflict Minerals Report for the reporting period from January 1, 2023 to December 31, 2023.

Exhibit 1.01 CONFLICT MINERALS REPORT OF 2023 TO FORM SD SPECIALIZED DISCLOSURE REPORT OF ECOLAB INC. I.Introduction Except where the context otherwise requires, references in this Conflict Minerals Report to “Ecolab,” “Company,” “we” and “our” are to Ecolab Inc. and its subsidiaries, collectively. As used herein and consistent with the Conflict Minerals Rule (as such term is defined below), (1) “

Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

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) May 2, 2024 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 Empl

ECOLAB ANNUAL MEETING RESULTS ANNOUNCED

Exhibit 99.1 News Release Ecolab Inc. 1 Ecolab Place St. Paul, Minnesota 55102 www.ecolab.com ECOLAB ANNUAL MEETING RESULTS ANNOUNCED ST. PAUL, Minn. – May 2, 2024 – Ecolab Inc. announced today at its annual meeting of stockholders that the slate of twelve director nominees named in the company’s proxy statement was elected for a one-year term ending at its annual meeting of stockholders in May 20

Letter regarding unaudited interim financial information.

Exhibit (15.1) May 2, 2024 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We are aware that our report dated May 2, 2024 on our review of interim financial statements of Ecolab Inc., which appears in this Quarterly Report on Form 10-Q, is incorporated by reference in the Registration Statements on Form S-3 (Registration No. 333-275302) and Form S-8 (Regis

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-9328 ECOLAB INC. (Exa

ECOLAB DELIVERS VERY STRONG FIRST QUARTER PERFORMANCE REPORTED DILUTED EPS $1.43; ADJUSTED DILUTED EPS $1.34, +52% INCREASED 2024 ADJUSTED DILUTED EPS OUTLOOK: $6.40 - $6.70, +23% - 29%

Exhibit 99.1 News Release Investor Contact: Media Contact: Andrew Hedberg (651) 250-2185 Nigel Glennie (651) 250-2576 Cairn Clark (651) 250-2291 ECOLAB DELIVERS VERY STRONG FIRST QUARTER PERFORMANCE REPORTED DILUTED EPS $1.43; ADJUSTED DILUTED EPS $1.34, +52% INCREASED 2024 ADJUSTED DILUTED EPS OUTLOOK: $6.40 - $6.70, +23% - 29% FIRST QUARTER HIGHLIGHTS ● Reported sales $3.8 billion, +5% versus la

Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to,

Exhibit 99.2 1 ECOLAB First Quarter 2024 Supplemental Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements regarding macroeconomic conditions, delivered product costs, and demand; our financi

Financial Statements and Exhibits, Results of Operations and Financial Condition

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 30, 2024 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 E

ECOLAB INC. SUPPLEMENTAL REPORTABLE SEGMENT INFORMATION AND NON-GAAP RECONCILIATION 2023 REVISED SEGMENT DATA AT 2024 FIXED CURRENCY EXCHANGE RATES

Exhibit 99.2 ECOLAB INC. SUPPLEMENTAL REPORTABLE SEGMENT INFORMATION AND NON-GAAP RECONCILIATION 2023 REVISED SEGMENT DATA AT 2024 FIXED CURRENCY EXCHANGE RATES (unaudited) (millions) 2023 First Quarter Second Quarter Third Quarter Fourth Quarter Twelve Months Ended Ended Ended Ended Ended March 31 June 30 September 30 December 31 December 31 Net Sales Global Industrial $1,808.2 $1,906.4 $1,940.8

Financial Statements and Exhibits, Results of Operations and Financial Condition

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 15, 2024 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 E

ECOLAB INC. SUPPLEMENTAL REPORTABLE SEGMENT INFORMATION AND NON-GAAP RECONCILIATION

Exhibit 99.1 ECOLAB INC. SUPPLEMENTAL REPORTABLE SEGMENT INFORMATION AND NON-GAAP RECONCILIATION (unaudited) Year ended December 31 (millions) 2023 2022 Fixed Fixed Currency Currency Values at Rate Values at Values at Rate Values at 2023 Rates Other Change 2024 Rates 2023 Rates Other Change 2024 Rates Net Sales Global Industrial $7,193.1 $407.3 $40.1 $7,640.5 $6,736.3 $392.5 $43.8 $7,172.6 Global

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defin

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Ru

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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) February 21, 2024 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.) (IR

Deed of Guarantee made on 30 October 2023 by Ecolab Inc. (in respect of notes issued by Ecolab NL 10 B.V., Ecolab NL 11 B.V. and Nalco Overseas Holding B.V.).

EXHIBIT (10.2(i)(d)) Ecolab NL 10 B.V., Ecolab NL 11 B.V. AND NALCO OVERSEAS HOLDING B.V.) CLIFFORD CHANCE LLP EXECUTION VERSION ECOLAB INC. ECOLAB NL 10 B.V. ECOLAB NL 11 B.V. NALCO OVERSEAS HOLDING B.V. U.S.$2,000,000,000 EURO COMMERCIAL PAPER PROGRAMME Guaranteed by ECOLAB INC. DEED OF GUARANTEE (in respect of Notes issued by Ecolab NL 10 B.V., Ecolab NL 11 B.V. AND NALCO OVERSEAS HOLDING B.V.)

Amended and Restated Note Agency Agreement, dated 30 October 2023, between Ecolab Inc., Ecolab NL 10 B.V. Ecolab NL 11 B.V. and Nalco Overseas Holding B.V. (as Issuers), Ecolab Inc. (as Guarantor in respect of the notes issued by Ecolab NL 10 B.V., Ecolab NL 11 B.V. and Nalco Overseas Holding B.V.), and Citibank, N.A., London Branch (as Issue and Paying Agent).

EXHIBIT (10.2(i)(b)) Clifford Chance LLP EXECUTION VERSION ECOLAB INC. Ecolab NL 10 B.V. Ecolab NL 11 B.V. NALCO OVERSEAS HOLDING B.V. as Issuers ECOLAB INC. (in respect of notes issued by Ecolab NL 10 B.V., Ecolab NL 11 B.V. and Nalco Overseas Holding B.V.) as Guarantor and CITIBANK, N.A., LONDON BRANCH as Issue and Paying Agent AMENDED AND RESTATED NOTE AGENCY AGREEMENT relating to a U.S.$2,000,

Ecolab Inc. Rule 10D-1 Clawback Policy, adopted November 2, 2023.

EXHIBIT (97.1) ECOLAB INC. RULE 10D-1 CLAWBACK POLICY Recoupment of Incentive-Based Compensation It is the policy of Ecolab Inc. (the “Company”) that, in the event the Company is required to prepare an accounting restatement of the Company’s financial statements due to material non-compliance with any financial reporting requirement under the federal securities laws (including any such correction

Amended and Restated Dealer Agreement, dated 30 October 2023, between Ecolab Inc., Ecolab NL 10 B.V., Ecolab NL 11 B.V. and Nalco Overseas Holding B.V. (as Issuers), Ecolab Inc. (as Guarantor in respect of the notes issued by Ecolab NL 10 B.V., Ecolab NL 11 B.V. and Nalco Overseas Holding B.V.), Barclays Bank PLC (as Arranger), and Barclays Bank Ireland PLC, Barclays Bank PLC, Citigroup Global Markets Europe AG and Citigroup Global Markets Limited (as Dealers).

EXHIBIT (10.2(i)(a)) Clifford Chance LLP EXECUTION VERSION ECOLAB INC. (incorporated under the laws of the State of Delaware) ECOLAB NL 10 B.V. (a private limited liability company (besloten vennootschap met beperkte aansprakelijkheid) incorporated under the laws of The Netherlands) ECOLAB NL 11 B.V. (a private limited liability company (besloten vennootschap met beperkte aansprakelijkheid) incorp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-9328 ECOLAB INC. (E

Sample form of Performance-Based Restricted Stock Unit Award Agreement under the Ecolab Inc. 2023 Stock Incentive Plan, adopted December 6, 2023.

EXHIBIT (10.14(iv)) ECOLAB INC. (the "Company") PERFORMANCE-BASED RESTRICTED STOCK UNIT AWARD AGREEMENT ARTICLE 1.GRANT OF AWARD The Company has adopted the Ecolab Inc. 2023 Stock Incentive Plan (the "Plan") to grant a performance-based restricted Stock Unit Awards to certain employees of the Company and its Subsidiaries. The Company hereby grants to you (the "Grantee") on the date set forth in yo

Description of Securities.

EXHIBIT (4.27) Description of Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934 Ecolab Inc., a Delaware corporation (“Ecolab,” “we,” “our,” “us,” “the Company”), has three classes of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended: (i) its common stock, $1.00 par value per share, (ii) its 2.625% Euro Notes due 2025, and (i

Powers of Attorney.

EXHIBIT (24.1) POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned, a director of Ecolab Inc., a Delaware corporation, does hereby make, nominate and appoint CHRISTOPHE BECK, LANESHA T. MINNIX and THERESA E. CORONA, and each of them, to be my attorney-in-fact, with full power and authority to sign his name to the Annual Report on Form 10-K of Ecolab Inc. for the fiscal year ende

Form of Indemnification Agreement, effective as of December 7, 2023. Substantially identical agreements are in effect as to each of our directors and certain of our officers.

EXHIBIT (10.4) INDEMNIFICATION AGREEMENT This Indemnification Agreement (“Agreement”) is made as of , 2023 by and between Ecolab Inc., a Delaware corporation, and (“Indemnitee”). This Agreement supersedes and replaces any and all previous Agreements between the Company and Indemnitee covering the subject matter of this Agreement. RECITALS WHEREAS, the Board of Directors (the “Board”) of Ecolab Inc

Deed of Covenant made on 30 October 2023 by Ecolab Inc., Ecolab NL 10 B.V., Ecolab NL 11 B.V. and Nalco Overseas Holding B.V. (as Issuers).

EXHIBIT (10.2(i)(c)) Clifford Chance LLP EXECUTION VERSION ECOLAB INC. Ecolab NL 10 B.V. Ecolab NL 11 B.V. NALCO OVERSEAS HOLDING B.V. as Issuers U.S.$2,000,000,000 EURO-COMMERCIAL PAPER PROGRAMME DEED OF COVENANT Contents Clause Page 1.Interpretation‌2 2.Direct Rights‌4 3.Evidence‌4 4.Deposit of Deed of Covenant‌5 5.Stamp Duties‌5 6.Benefit of Deed of Covenant‌5 7.Partial Invalidity‌5 8.Notices‌6

Description of Ecolab Management Incentive Plan.

EXHIBIT (10.12) DESCRIPTION OF ECOLAB INC. MANAGEMENT INCENTIVE PLAN Ecolab Inc. (“Ecolab”, the “Company”, “we” and “our”) maintains an annual cash incentive plan for executives that is designed to motivate executives to achieve annual business and individual goals. This plan is referred to as the Management Incentive Plan (“MIP”). The MIP is not set forth in a formal plan document. Set forth belo

List of Subsidiaries.

SUBSIDIARIES OF ECOLAB INC. EXHIBIT (21.1) Entity Name State or Other Jurisdiction of Incorporation NLC Process and Water Services SARL Algeria Ecolab (Antigua) Ltd. Antigua & Barbuda Anios America S.A. Argentina Ecolab Argentina S.R.L. Argentina Ecolab Services Argentina S.R.L. Argentina Ecolab (Aruba) N.V. Aruba Ecolab (Fiji) Pty Limited Australia Ecolab AU2 Pty Ltd Australia Ecolab AU3 Pty Ltd

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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) February 21, 2024 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.) (IR

ECOLAB APPOINTS JUDSON ALTHOFF TO BOARD OF DIRECTORS

Exhibit 99.1 News Release Ecolab Inc. 1 Ecolab Place St. Paul, Minnesota 55102 www.ecolab.com ECOLAB APPOINTS JUDSON ALTHOFF TO BOARD OF DIRECTORS ST. PAUL, Minn. – Feb. 22, 2024 – The board of directors of Ecolab Inc. has appointed Judson Althoff, Microsoft’s chief commercial officer, to the Ecolab board, effective February 21, 2024. Mr. Althoff will serve as an independent director and a member

ECOLAB ANNOUNCES STRONG FOURTH QUARTER PERFORMANCE AND 2024 OUTLOOK REPORTED DILUTED EPS $1.41; ADJUSTED DILUTED EPS $1.55, +22% 2024 ADJUSTED DILUTED EPS OUTLOOK: $6.10 TO $6.50, +17% TO 25%

Exhibit 99.1 News Release Investor Contact: Media Contact: Andrew Hedberg (651) 250-2185 Nigel Glennie (651) 250-2576 Cairn Clark (651) 250-2291 ECOLAB ANNOUNCES STRONG FOURTH QUARTER PERFORMANCE AND 2024 OUTLOOK REPORTED DILUTED EPS $1.41; ADJUSTED DILUTED EPS $1.55, +22% 2024 ADJUSTED DILUTED EPS OUTLOOK: $6.10 TO $6.50, +17% TO 25% FOURTH QUARTER HIGHLIGHTS ● Reported sales $3.9 billion, +7% ve

Financial Statements and Exhibits, Results of Operations and Financial Condition

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) February 13, 2024 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.) (IR

Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to,

Exhibit 99.2 1 ECOLAB Fourth Quarter 2023 Supplemental Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements regarding macroeconomic conditions, delivered product costs, demand, inflation, and

ECL / Ecolab Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0814-ecolabinc.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 11)* Name of issuer: Ecolab Inc Title of Class of Securities: Common Stock CUSIP Number: 278865100 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to designate the rule purs

ECL / Ecolab Inc. / BlackRock Inc. Passive Investment

SC 13G/A 1 us2788651006012624.txt us2788651006012624.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 9) ECOLAB INC - (Name of Issuer) Common Stock - (Title of Class of Securities) 278865100 - (CUSIP Number) December 31, 2023 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to desi

EX-99.25

NOTIFICATION OF THE REMOVAL FROM LISTING AND REGISTRATION OF THE STATED SECURITIES The New York Stock Exchange hereby notifies the SEC of its intention to remove the entire class of the stated securities from listing and registration on the Exchange at the opening of business on January 29, 2024, pursuant to the provisions of Rule 12d2-2 (a).

As filed with the Securities and Exchange Commission on November 3, 2023.

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on November 3, 2023.

Indenture Act of 1939 of Computershare Trust Company,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) [] Computershare Trust Company, National Association (Exact name of trustee as specified in its charter) National Bank

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-3ASR (Form Type) Ecolab Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Fo

Letter regarding unaudited interim financial information.

Exhibit 15.1 November 3, 2023 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We are aware that our reports dated May 4, 2023, August 3, 2023 and November 2, 2023 on our reviews of interim financial statements of Ecolab Inc., which are included in the Company’s Quarterly Reports on Form 10-Q for the quarters ended March 31, 2023, June 30, 2023, and Septemb

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-9328 ECOLAB INC.

Letter regarding unaudited interim financial information.

Exhibit (15.1) November 2, 2023 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We are aware that our report dated November 2, 2023 on our review of interim financial statements of Ecolab Inc., which appears in this Quarterly Report on Form 10-Q, is incorporated by reference in the Registration Statements on Form S-8 (Registration Nos. 2-90702; 33-18202; 3

Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to,

Exhibit 99.2 1 ECOLAB Third Quarter 2023 Supplemental Cautionary statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements regarding macroeconomic conditions, delivered products costs, demand, and our financ

Financial Statements and Exhibits, Results of Operations and Financial Condition

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) October 31, 2023 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

ECOLAB DELIVERS VERY STRONG THIRD QUARTER PERFORMANCE REPORTED DILUTED EPS $1.41; ADJUSTED DILUTED EPS $1.54, +18% EXPECT CONTINUED STRENGTH IN 4Q 2023 AND 2024

Exhibit 99.1 News Release Investor Contact: Media Contact: Andrew Hedberg (651) 250-2185 Nigel Glennie (651) 250-2576 Cairn Clark (651) 250-2291 ECOLAB DELIVERS VERY STRONG THIRD QUARTER PERFORMANCE REPORTED DILUTED EPS $1.41; ADJUSTED DILUTED EPS $1.54, +18% EXPECT CONTINUED STRENGTH IN 4Q 2023 AND 2024 THIRD QUARTER HIGHLIGHTS: ● Reported sales $4.0 billion, +8% versus last year. Organic sales +

Ecolab Inc. 2023 Stock Incentive Plan, as amended and restated, effective as of May 4, 2023.

Exhibit (10.1) ECOLAB INC. 2023 STOCK INCENTIVE PLAN (Effective May 4, 2023) 1.Purpose of Plan. The purpose of the Ecolab Inc. 2023 Stock Incentive Plan (the “Plan”) is to advance the interests of Ecolab Inc. (the “Company”) and its stockholders by enabling the Company and its Subsidiaries to attract and retain qualified individuals through opportunities for equity participation in the Company, an

Letter regarding unaudited interim financial information.

Exhibit (15.1) August 3, 2023 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We are aware that our report dated August 3, 2023 on our review of interim financial statements of Ecolab Inc., which appears in this Quarterly Report on Form 10-Q, is incorporated by reference in the Registration Statements on Form S-8 (Registration Nos. 2-90702; 33-18202; 33-55

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-9328 ECOLAB INC. (Exac

Sample form of performance-based restricted stock unit award agreement for executive officers under the Ecolab Inc. 2023 Stock Incentive Plan, effective May 4, 2023.

Exhibit (10.3) ECOLAB INC. (the "Company") PERFORMANCE-BASED RESTRICTED STOCK UNIT AWARD AGREEMENT ARTICLE 1.GRANT OF AWARD The Company has adopted the Ecolab Inc. 2023 Stock Incentive Plan (the "Plan") to grant a performance-based restricted Stock Unit Awards to certain employees of the Company and its Subsidiaries. The Company hereby grants to you (the "Grantee") on the date set forth in your gr

Sample form of Non-Statutory Stock Option Agreement under the Ecolab Inc. 2023 Stock Incentive Plan, adopted May 4, 2023.

Exhibit (10.2) ECOLAB INC. (the "Company") NON-STATUTORY STOCK OPTION AGREEMENT ARTICLE 1.GRANT OF OPTION The Company has adopted the Ecolab Inc. 2023 Stock Incentive Plan (the "Plan") to grant non-statutory stock options to employees, consultants, advisors and independent contractors of the Company and its Subsidiaries. The Company hereby grants to you (the "Optionee") on the date set forth in yo

Sample form of Restricted Stock Unit Award Agreement under the Ecolab Inc. 2023 Stock Incentive Plan, adopted May 4, 2023.

Exhibit (10.4) ECOLAB INC. (the "Company") RESTRICTED STOCK UNIT AWARD AGREEMENT ARTICLE 1.GRANT OF AWARD The Company has adopted the Ecolab Inc. 2023 Stock Incentive Plan (the "Plan") to grant restricted Stock Unit Awards to certain employees of the Company and its Subsidiaries. The Company hereby grants to you (the "Grantee") on the date set forth in your grant notice (the "Date of Grant") a res

Cautionary Statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to,

Exhibit 99.2 1 ECOLAB Second Quarter 2023 Supplemental Cautionary Statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements regarding macroeconomic conditions, delivered products costs, demand, inflation, cu

Financial Statements and Exhibits, Results of Operations and Financial Condition

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) August 1, 2023 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 E

ECOLAB DELIVERS VERY STRONG SECOND QUARTER PERFORMANCE REPORTED DILUTED EPS $1.15; ADJUSTED DILUTED EPS $1.24, +13% EXPECT CONTINUED STRONG SECOND HALF 2023 PERFORMANCE

Exhibit 99.1 News Release Investor Contact: Media Contact: Andrew Hedberg (651) 250-2185 Nigel Glennie (651) 250-2576 Cairn Clark (651) 250-2291 ECOLAB DELIVERS VERY STRONG SECOND QUARTER PERFORMANCE REPORTED DILUTED EPS $1.15; ADJUSTED DILUTED EPS $1.24, +13% EXPECT CONTINUED STRONG SECOND HALF 2023 PERFORMANCE SECOND QUARTER HIGHLIGHTS: ● Reported sales $3.9 billion, +8% versus last year. Organi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K (Mark One) ⌧ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ◻ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-09328 A. Full tit

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K (Mark One) ⌧ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ◻ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-09328 A. Full tit

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report ECOLAB INC. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report ECOLAB INC. (Exact name of registrant as specified in its charter) Delaware 1-9328 (State or other jurisdiction of incorporation or organization) (Commission File Number) 1 Ecolab Place, Saint Paul, Minnesota 55102 (Address of principal executive offices) (Zip Code) Lanesha Minnix, Esq., E

Conflict Minerals Report for the reporting period from January 1, 2022 to December 31, 2022.

U.S. Securities and Exchange Commission You’ve Exceeded the SEC’s Traffic Limit Your request rate has exceeded the SEC’s maximum allowable requests per second. Your access to SEC.gov will be limited for 10 minutes. Current guidelines limit each user to a total of no more than 10 requests per second, regardless of the number of machines used to submit requests. To ensure that SEC.gov remains

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) May 18, 2023 ECOLAB INC. (Exact na

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) May 18, 2023 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 Emp

ECOLAB ANNUAL MEETING RESULTS ANNOUNCED

Exhibit 99.1 News Release Ecolab Inc. 1 Ecolab Place St. Paul, Minnesota 55102 www.ecolab.com ECOLAB ANNUAL MEETING RESULTS ANNOUNCED ST. PAUL, Minn. – May 4, 2023 – Ecolab Inc. announced today at its annual meeting of stockholders that the slate of thirteen director nominees named in the company’s proxy statement was elected for a one-year term ending at its annual meeting of stockholders in May

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) May 4, 2023 ECOLAB INC. (Exact nam

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) May 4, 2023 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 Empl

Amended and Restated Ecolab Canada Share Purchase Plan (As Amended Through May 4, 2023).

Exhibit 4.3 AMENDED AND RESTATED ECOLAB CANADA SHARE PURCHASE PLAN As Amended Through May 4, 2023 1. PURPOSE On March 24, 1993, the Board of Directors of Ecolab Co. established the Ecolab Canada Share Purchase Plan to afford Participants a convenient and cost effective means for regular and systematic purchases of the Common Stock of Ecolab Inc., the U.S. parent corporation of the Companies. The P

Letter Regarding Unaudited Interim Financial Information.

EXHIBIT 15.1 May 4, 2023 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We are aware that our report dated May 4, 2023, on our review of interim financial information of Ecolab Inc., which is included in the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2023, is incorporated by reference in this Registration Statement on Form S-8

Filed herewith electronically.

Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Ecolab Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered (1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common Stock, par value $1.00 per s

Letter regarding unaudited interim financial information.

Exhibit (15.1) May 4, 2023 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We are aware that our report dated May 4, 2023 on our review of interim financial statements of Ecolab Inc., which appears in this Quarterly Report on Form 10-Q, is incorporated by reference in the Registration Statements on Form S-8 (Registration Nos. 2-90702; 33-18202; 33-55986; 3

Nalco Company Supplemental Profit Sharing Plan, as Amended and Restated effective as of December 31, 2012.

Exhibit (10.4) NALCO COMPANY SUPPLEMENTAL PROFIT SHARING PLAN (Amended and Restated Effective as of December 31, 2012) TABLE OF CONTENTS ARTICLE I INTRODUCTION‌1 1.1Adoption and Effective Date‌1 1.2Purpose‌1 ARTICLE II DEFINITIONS AND CONSTRUCTION‌1 2.1Definitions‌1 2.2Gender and Number; Headings‌3 2.3Compliance with Code Section 409A‌3 ARTICLE III PARTICIPATION‌4 3.1Participation‌4 ARTICLE IV MAI

First Amendment, dated as of March 17, 2023, to the Third Amended and Restated Multicurrency Credit Agreement dated as of April 16, 2021, among Ecolab Inc., the banks from time to time party thereto and Bank of America, N.A., as Agent.

Exhibit (10.1) Execution Version First Amendment (this “First Amendment”), dated as of March 17, 2023, to the Third Amended and Restated Multicurrency Credit Agreement dated as of April 16, 2021 (as amended, restated, supplemented or otherwise modified from time to time prior to the date hereof, the “Existing Credit Agreement”), among ECOLAB INC., a Delaware corporation (the “Company”), the banks

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-9328 ECOLAB INC. (Exa

Nalco Company Supplemental Retirement Income Plan, as Amended and Restated effective as of December 31, 2012.

Exhibit (10.3) NALCO COMPANY SUPPLEMENTAL RETIREMENT INCOME PLAN (As Amended and Restated Effective as of December 31, 2012) Table of Contents Page ARTICLE I INTRODUCTION‌1 1.1.History and Effective Date‌1 1.2.Purpose‌1 ARTICLE II Definitions and Construction‌2 2.1.Definitions‌2 2.2.Gender and Number; Headings‌3 2.3.Compliance with Code Section 409A‌3 ARTICLE III Participation‌3 3.1.Participation‌

Filed herewith electronically.

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned, a Director of Ecolab Inc., a Delaware corporation, does hereby make, nominate and appoint each of CHRISTOPHE BECK, LANESHA T. MINNIX and THERESA E. CORONA, signing singly, to be my attorney-in-fact, with full power and authority to sign his or her name to a Registration Statement on Form S-8 relating to the regist

Filed herewith electronically.

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned, a Director of Ecolab Inc., a Delaware corporation, does hereby make, nominate and appoint each of CHRISTOPHE BECK, LANESHA T. MINNIX and THERESA E. CORONA, signing singly, to be my attorney-in-fact, with full power and authority to sign his or her name to a Registration Statement on Form S-8 relating to the regist

description of the Registrant’s Common Stock

EXHIBIT 4.1 Description of Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934 Ecolab Inc., a Delaware corporation (“Ecolab,” “we,” “our,” “us,” “the Company”), has three classes of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended: (i) its common stock, $1.00 par value per share, (ii) its 2.625% Euro Notes due 2025, and (iii)

Filed herewith electronically.

Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Ecolab Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered (1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common Stock, par value $1.00 per s

As filed with the Securities and Exchange Commission on May 4, 2023

As filed with the Securities and Exchange Commission on May 4, 2023 Registration No.

As filed with the Securities and Exchange Commission on May 4, 2023

As filed with the Securities and Exchange Commission on May 4, 2023 Registration No.

Offer letter relating to employment of Lanesha Minnix dated April 19, 2022, and accompanying signing bonus payback agreement, sign on bonus repayment agreement and relocation repayment agreement referenced therein.

Exhibit (10.2) 1 ECOLAB PLACE ST. PAUL MN 55102-1390 April 19, 2022 Lanesha Minnix 4412 Windsor Ridge Drive Irving, TX 75038 Dear Lanesha, I am pleased to confirm our offer of employment with Ecolab USA Inc. for the position of Executive Vice President General Counsel and Secretary, reporting to me effective on a date to be determined. This position includes an annual starting salary of $615,000 p

Letter Regarding Unaudited Interim Financial Information.

EXHIBIT 15.1 May 4, 2023 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We are aware that our report dated May 4, 2023, on our review of interim financial information of Ecolab Inc., which is included in the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2023, is incorporated by reference in this Registration Statement on Form S-8

By-Laws, as amended through May 24, 2023.

Exhibit 3.1 BY-LAWS OF ECOLAB INC. (A Delaware corporation) AS AMENDED THROUGH MAY 4, 2023 Article I OFFICES Section 1. Registered Office. The registered office of the Corporation in the State of Delaware and the registered agent at such office shall be as set forth in the Corporation’s Certificate of Incorporation (as it may be amended and/or restated from time to time, the “Certificate of Incorp

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): May 4, 2023

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): May 4, 2023 ; 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 E

Death Benefit Agreement between Nalco Company and Laurie M. Marsh effective as of December 17, 2009.

Exhibit (10.5) DEATH BENEFIT AGREEMENT Laurie M. Marsh THIS AGREEMENT, effective December 17, 2009 between Nalco Company (hereinafter “Nalco”), a corporation organized and existing under the laws of Delaware, and Laurie M. Marsh (hereinafter “Executive”). WHEREAS, the Executive is employed by Nalco as a corporate officer; and WHEREAS, in consideration of Executive’s future services to Nalco, Nalco

ECOLAB DELIVERS VERY STRONG FIRST QUARTER OPERATING PERFORMANCE REPORTED DILUTED EPS $0.82; ADJUSTED DILUTED EPS $0.88, +7% CONTINUE TO EXPECT FURTHER PERFORMANCE IMPROVEMENT THROUGH 2023

Exhibit 99.1 News Release Investor Contact: Media Contact: Andrew Hedberg (651) 250-2185 Nigel Glennie (651) 250-2576 Cairn Clark (651) 250-2291 ECOLAB DELIVERS VERY STRONG FIRST QUARTER OPERATING PERFORMANCE REPORTED DILUTED EPS $0.82; ADJUSTED DILUTED EPS $0.88, +7% CONTINUE TO EXPECT FURTHER PERFORMANCE IMPROVEMENT THROUGH 2023 FIRST QUARTER HIGHLIGHTS: ● Reported sales $3.6 billion, +9% versus

Cautionary Statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to,

Exhibit 99.2 1 ECOLAB First Quarter 2023 Supplemental Cautionary Statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements regarding macroeconomic conditions, delivered products costs, demand, inflation, cur

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) May 2, 2023 ECOLAB INC. (Exact nam

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) May 2, 2023 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 Empl

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defin

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 5, 2023 ECOLAB INC. (Exact n

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 5, 2023 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 Em

ECOLAB INC. SUPPLEMENTAL REPORTABLE SEGMENT INFORMATION AND NON-GAAP RECONCILIATION 2022 REVISED SEGMENT DATA AT 2023 FIXED CURRENCY EXCHANGE RATES

Exhibit 99.2 ECOLAB INC. SUPPLEMENTAL REPORTABLE SEGMENT INFORMATION AND NON-GAAP RECONCILIATION 2022 REVISED SEGMENT DATA AT 2023 FIXED CURRENCY EXCHANGE RATES (unaudited) (millions) 2022 First Quarter Second Quarter Third Quarter Fourth Quarter Twelve Months Ended Ended Ended Ended Ended March 31 June 30 September 30 December 31 December 31 Net Sales Global Industrial $1,511.4 $1,653.3 $1,763.4

ECOLAB INC. SUPPLEMENTAL REPORTABLE SEGMENT INFORMATION AND NON-GAAP RECONCILIATION

Exhibit 99.1 ECOLAB INC. SUPPLEMENTAL REPORTABLE SEGMENT INFORMATION AND NON-GAAP RECONCILIATION (unaudited) Year ended December 31 (millions) 2022 2021 Fixed Fixed Currency Currency Values at Rate Values at Values at Rate Values at 2022 Rates Other Change 2023 Rates 2022 Rates Other Change 2023 Rates Net Sales Global Industrial $6,944.0 $ - ($207.7) $6,736.3 $6,086.8 $ - ($178.3) $5,908.5 Global

Ecolab Inc. (ECL)

Ecolab Inc. (ECL) Shareholder Alert Voluntary submission by John Chevedden, POB 2673, Redondo Beach, CA 90278 Ecolab shareholder since 2010 Please consider voting against Ms. Barbara Beck, Chair of the Governance Committee, due to biased Ecolab ballot Ms. Beck appears to believe that shareholder proposals do not deserve a fair chance at Ecolab. The Ecolab ballot suggests that the shareholder propo

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defin

Incorporated by reference to Appendix A to the Company’s Definitive Proxy Statement on Schedule 14A filed on March 17, 2023.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ⌧ Filed by a Party other than the Registrant ◻ Check the appropriate box: ◻ Preliminary Proxy Statement ◻ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)

ARS

Growing for a thriving world ANNUAL REPORT 2022 Protecting What’s Vital ™2 COMPANY OVERVIEW Protecting What’s Vital A GLOBAL SUSTAINABILITY LEADER PROTECTING PEOPLE AND THE RESOURCES VITAL TO LIFE An innovative and trusted partner at millions of customer locations, Ecolab Inc.

Employment Transition Severance Agreement, dated November 16, 2022 between Ecolab Inc. and Timothy Mulhere.

EX-10.16 2 ecl-20221231xex10d16.htm EX-10.16 Exhibit (10.16) EMPLOYMENT TRANSITION SEVERANCE AGREEMENT THIS EMPLOYMENT TRANSITION SEVERANCE AGREEMENT (“Agreement”) is made and entered into as of November 16, 2022 (the “Effective Date”), by and among Ecolab Inc., a Delaware corporation (together with all present and former parents, subsidiaries, successors, assigns and affiliated corporations the “

List of Subsidiaries.

Exhibit (21.1) SUBSIDIARIES OF ECOLAB INC. Entity Name State or Other Jurisdiction of Incorporation NLC Process and Water Services SARL Algeria Ecolab (Antigua) Ltd. Antigua & Barbuda Anios America S.A. Argentina Ecolab Argentina S.R.L. Argentina Ecolab Services Argentina S.R.L. Argentina Ecolab (Aruba) N.V. Aruba Ecolab (Fiji) Pty Limited Australia Ecolab AU2 Pty Ltd Australia Ecolab Pty Ltd. Aus

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-9328 ECOLAB INC. (E

Powers of Attorney.

EXHIBIT (24.1) POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned, a director of Ecolab Inc., a Delaware corporation, does hereby make, nominate and appoint CHRISTOPHE BECK, LANESHA T. MINNIX and THERESA E. CORONA, and each of them, to be my attorney-in-fact, with full power and authority to sign his name to the Annual Report on Form 10-K of Ecolab Inc. for the fiscal year ende

ECOLAB DELIVERS STRONG FOURTH QUARTER OPERATING PERFORMANCE REPORTED DILUTED EPS $0.93; ADJUSTED DILUTED EPS $1.27 EXPECT FURTHER PERFORMANCE IMPROVEMENT THROUGH 2023

Exhibit 99.1 News Release Investor Contact: Media Contact: Andrew Hedberg (651) 250-2185 Nigel Glennie (651) 250-2576 Cairn Clark (651) 250-2291 ECOLAB DELIVERS STRONG FOURTH QUARTER OPERATING PERFORMANCE REPORTED DILUTED EPS $0.93; ADJUSTED DILUTED EPS $1.27 EXPECT FURTHER PERFORMANCE IMPROVEMENT THROUGH 2023 FOURTH QUARTER HIGHLIGHTS: ● Reported sales $3.7 billion, +9% versus last year. Acquisit

Cautionary Statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to,

Exhibit 99.2 Fourth Quarter 2022 Supplemental 1 Cautionary Statement Forward-Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements regarding global economic conditions, delivered products costs, demand, inflation, currenc

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) February 14, 2023 ECOLAB INC. (Exa

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) February 14, 2023 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.) (IR

ECL / Ecolab Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0789-ecolabinc.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 10)* Name of issuer: Ecolab Inc. Title of Class of Securities: Common Stock CUSIP Number: 278865100 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to designate the rule pur

ECL / Ecolab Inc. / BlackRock Inc. Passive Investment

SC 13G/A 1 us2788651006013123.txt us2788651006013123.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 8) ECOLAB INC - (Name of Issuer) Common Stock - (Title of Class of Securities) 278865100 - (CUSIP Number) December 31, 2022 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to desi

ECOLAB APPOINTS ERIC GREEN TO BOARD OF DIRECTORS

EX-99.1 2 tm2232139d1ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 News Release Ecolab Inc. 1 Ecolab Place St. Paul, Minnesota 55102 ECOLAB APPOINTS ERIC GREEN TO BOARD OF DIRECTORS ST. PAUL, Minn. — December 8, 2022 — The board of directors of Ecolab Inc. has appointed Eric Green to the Ecolab board, effective December 8, 2022. Mr. Green will serve as an independent director and a member of the Compensati

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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) December 8, 2022 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

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

? ? 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) November 16, 2022 ? ECOLAB INC. (Exact name of registrant as specified in its charter) ? ? ? ? ? ? Delaware ? 1-9328 ? 41-0231510 (State or other jurisdiction of incorporatio

Twelfth Supplemental Indenture, dated as of November 17, 2022, between Ecolab Inc. and Computershare Trust Company, N.A., as Trustee.

Exhibit 4.2 ? ? ? ECOLAB INC. ? $500,000,000 5.250% Notes due 2028 ? TWELFTH SUPPLEMENTAL INDENTURE ? Dated as of November 17, 2022 ? to ? Indenture dated as of January 12, 2015 ? COMPUTERSHARE TRUST COMPANY, N.A. (AS SUCCESSOR TO WELLS FARGO BANK, NATIONAL ASSOCIATION) ? Trustee ? ? ? ? ? ? ? This TWELFTH SUPPLEMENTAL INDENTURE (this ?Twelfth Supplemental Indenture?) dated as of November 17, 2022

Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Other Events

? ? 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): November 17, 2022 ? ECOLAB INC. (Exact name of registrant as specified in its charter) ? ? ? ? ? ? Delaware ? 1-9328 ? 41-0231510 (State or other jurisdiction of incorpora

Ecolab Inc. 5.250% Notes due 2028

TABLE OF CONTENTS  Amended Filing to Correct  Date of Prospectus Supplement on Cover Page  Filed Pursuant to Rule 424(b)(3)   Registration Statement No.

Underwriting Agreement, dated as of November 7, 2022, by and among Ecolab Inc. and BofA Securities, Inc., Citigroup Global Markets Inc. and Goldman Sachs & Co. LLC, as representatives of the several underwriters named therein.

EX-1.1 2 ecl-20221107xex1d1.htm EX-1.1 Exhibit 1.1 Execution Version Ecolab Inc. $500,000,000 $500,000,000 5.250% Notes due 2028 Underwriting Agreement November 7, 2022 BofA Securities, Inc. One Bryant Park New York, New York 10036 Citigroup Global Markets Inc. 388 Greenwich Street New York, New York 10013 Goldman Sachs & Co. LLC 200 West Street New York, New York 10282-2198 As representatives of

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Other Events

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): November 7, 2022 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.) (IR

Calculation of Filing Fee Tables (Form Type) Ecolab Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

Exhibit 107 Calculation of Filing Fee Tables 424(b)(5) (Form Type) Ecolab Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee(1) Carry F

Ecolab Inc. 5.250% Notes due 2028

TABLE OF CONTENTS ?Filed Pursuant to Rule 424(b)(5)? ?Registration Statement No. 333-249740? PROSPECTUS SUPPLEMENT (To Prospectus dated October 30, 2020) $500,000,000 Ecolab Inc. 5.250% Notes due 2028 The notes will bear interest at a rate of 5.250% per year and will mature on January 15, 2028. Interest on the notes will be payable semi-annually in arrears on January 15 and July 15 of each year, b

Subject to Completion Preliminary Prospectus Supplement dated November 7, 2022

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

Ecolab Inc. $500,000,000 5.250% Notes due 2028 Pricing Term Sheet November 7, 2022

Filed Pursuant to Rule 433 Registration No. 333-249740 Supplementing the Preliminary Prospectus Supplement dated November 7, 2022 (To Prospectus dated October 30, 2020) Ecolab Inc. $500,000,000 5.250% Notes due 2028 Pricing Term Sheet November 7, 2022 Issuer: Ecolab Inc. Type of Offering: SEC Registered (No. 333-249740) Anticipated Ratings*: A3 (Negative outlook) by Moody’s Investors Service, Inc.

Letter regarding unaudited interim financial information.

Exhibit (15.1) November 4, 2022 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We are aware that our report dated November 4, 2022 on our review of interim financial statements of Ecolab Inc., which appears in this Quarterly Report on Form 10-Q, is incorporated by reference in the Registration Statements on Form S-8 (Registration Nos. 2-90702; 33-18202; 3

Financial Statements and Exhibits, Other Events

? ? 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) November 3, 2022 ? ECOLAB INC. (Exact name of registrant as specified in its charter) ? ? ? ? ? ? Delaware ? 1-9328 ? 41-0231510 (State or other jurisdiction of incorporation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-9328 ECOLAB INC.

Financial Statements and Exhibits, Costs Associated with Exit or Disposal Activities, Results of Operations and Financial Condition

? ? 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) November 1, 2022 ? ECOLAB INC. (Exact name of registrant as specified in its charter) ? ? ? ? ? ? Delaware ? 1-9328 ? 41-0231510 (State or other jurisdiction of incorporation

Forward - Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Ac t o f 1995. These forward - looking statements include, but are not limited to, statements reg

EX-99.2 3 ecl-20221101xex99d2.htm EX-99.2 Exhibit 99.2 Third Quarter 2022 Supplemental 1 Forward - Looking Information This communication contains forward looking statements as that term is defined in the Private Securities Litigation Reform Ac t o f 1995. These forward - looking statements include, but are not limited to, statements regarding global economic conditions, inflation, currency transl

ECOLAB THIRD QUARTER REPORTED DILUTED EPS $1.21 ADJUSTED DILUTED EPS $1.30 WITH DOUBLE-DIGIT GROWTH IN SALES AND PRICING EXPECT CONTINUED IMPROVEMENT IN FOURTH QUARTER 2022 PERFORMANCE

EX-99.1 2 ecl-20221101xex99d1.htm EX-99.1 Exhibit 99.1 News Release Investor Contact: Media Contact: Andrew Hedberg (651) 250-2185 Nigel Glennie (651) 250-2576 Cairn Clark (651) 250-2291 ECOLAB THIRD QUARTER REPORTED DILUTED EPS $1.21 ADJUSTED DILUTED EPS $1.30 WITH DOUBLE-DIGIT GROWTH IN SALES AND PRICING EXPECT CONTINUED IMPROVEMENT IN FOURTH QUARTER 2022 PERFORMANCE THIRD QUARTER HIGHLIGHTS: ●

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

? ? 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) September 22, 2022 ? ECOLAB INC. (Exact name of registrant as specified in its charter) ? ? ? ? ? ? Delaware ? 1-9328 ? 41-0231510 (State or other jurisdiction of incorporati

DARRELL BROWN NAMED ECOLAB PRESIDENT AND COO

Exhibit 99.1 News Release ? Ecolab Inc. 1 Ecolab Place St. Paul, Minnesota 55102 ? ? DARRELL BROWN NAMED ECOLAB PRESIDENT AND COO ? ST. PAUL, Minn. ? Sept. 27, 2022 ? Ecolab Inc. announced that Darrell R. Brown, currently executive vice president and president, Global Industrial, will become president and chief operating officer (COO) effective Oct. 1, 2022. ? ?As Ecolab continues to grow and expa