Double-digit EPS growth as Ecolab (NYSE: ECL) reaffirms strong 2026 profit outlook

Rhea-AI Filing Summary

Ecolab Inc. reported solid first-quarter 2026 results with faster growth and higher profitability. Net sales rose to $4,066.1 million, up 10% from 2025, while organic sales grew 4%. Reported diluted EPS was $1.52, up 8%, and adjusted diluted EPS reached $1.70, an increase of 13%.

Adjusted operating income climbed 15% to $679.7 million, supported by strong pricing, volume growth and productivity, partly offset by higher commodity costs and growth investments. Global Life Sciences, Pest Elimination and Institutional & Specialty all delivered solid double‑digit adjusted or organic operating income growth.

Ecolab reaffirmed its full‑year 2026 adjusted diluted EPS outlook of $8.43–$8.63, implying 12%–15% growth over 2025. For second quarter 2026, it expects adjusted diluted EPS of $2.02–$2.12, up 7%–12%, while implementing an energy surcharge to offset rising energy‑driven commodity costs.

Positive

• Strong Q1 earnings growth and margin expansion: Net sales increased 10% to $4,066.1 million, adjusted operating income rose 15% to $679.7 million, and adjusted diluted EPS grew 13% to $1.70, showing effective pricing, volume growth and productivity.
• Reaffirmed robust 2026 EPS outlook: Management maintained full‑year 2026 adjusted diluted EPS guidance of $8.43–$8.63, representing 12%–15% growth over 2025’s adjusted $7.53, indicating confidence in ongoing performance despite higher commodity costs.
• Broad-based segment strength and growth engines: Global Life Sciences fixed‑currency sales rose 11% with operating income up 21%, Global Pest Elimination fixed‑currency sales grew 8%, and Institutional & Specialty fixed‑currency sales rose 4% with 13% operating income growth, underscoring diversified growth drivers.

Negative

• None.

Insights

Equity analyst

Ecolab posts strong Q1 growth and reiterates double‑digit 2026 EPS outlook.

Ecolab’s Q1 2026 results show healthy top‑ and bottom‑line momentum. Net sales rose 10% to $4.07B, with adjusted operating income up 15% and adjusted diluted EPS up 13% to $1.70, reflecting effective pricing, volume growth and productivity.

Segment performance was broad-based: Global Institutional & Specialty and Life Sciences delivered double‑digit operating income growth, while Pest Elimination grew sales 8% at fixed currency. Management highlighted growth engines such as Global High-Tech, Life Sciences and Ecolab Digital as key contributors.

The company maintained its 2026 adjusted EPS outlook of $8.43–$8.63, implying 12%–15% growth, and guided Q2 adjusted EPS up 7%–12%. Rising energy‑driven commodity costs and higher interest expense remain watch points, but current guidance assumes pricing and an energy surcharge will offset these pressures over 2026.

8-K Event Classification

2 items: 2.02, 9.01

2 items

Item 2.02 Results of Operations and Financial Condition Financial

Disclosure of earnings results, typically an earnings press release or preliminary financials.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

Key Figures

Net sales Q1 2026: $4,066.1 million Reported diluted EPS Q1 2026: $1.52 per share Adjusted diluted EPS Q1 2026: $1.70 per share +5 more

8 metrics

Net sales Q1 2026 $4,066.1 million Reported net sales, up 10% vs Q1 2025

Reported diluted EPS Q1 2026 $1.52 per share Up 8% vs Q1 2025

Adjusted diluted EPS Q1 2026 $1.70 per share Non-GAAP, up 13% vs Q1 2025

Adjusted operating income Q1 2026 $679.7 million Non-GAAP operating income, up 15% year over year

Global Life Sciences sales $200.9 million Fixed currency Q1 2026 sales, up 11% vs Q1 2025

2026 adjusted EPS guidance $8.43–$8.63 per share Full-year 2026 outlook, 12%–15% growth vs 2025

Q2 2026 adjusted EPS guidance $2.02–$2.12 per share Expected 7%–12% growth vs Q2 2025

Organic sales Q1 2026 $3,957.3 million Organic sales at fixed currency, up 4% vs Q1 2025

Key Terms

adjusted diluted earnings per share, organic sales, fixed currency sales, special (gains) and charges, +2 more

6 terms

adjusted diluted earnings per share financial

"MAINTAINS 2026 ADJUSTED DILUTED EPS OUTLOOK: $8.43 - $8.63, +12% - 15%"

Adjusted diluted earnings per share is the company’s net profit per share after accounting for potential extra shares (from options or convertible securities) and removing one‑time or unusual items so the number reflects ongoing business results. Think of it like timing a runner’s steady pace after excluding a few unexpected stops; it gives investors a clearer view of sustainable profit available to each share. Investors use it to compare companies and judge underlying profitability and valuation without short‑term distortions.

organic sales financial

"Organic sales growth accelerated to 4% when compared to the prior year."

Organic sales are the change in a company’s revenue that comes from its existing business operations, excluding effects of acquisitions, divestitures, and currency swings. Think of it like measuring how much a garden grows from the plants you already tended, rather than adding new pots; investors use organic sales to judge whether demand and core business performance are genuinely improving or if growth is driven by one‑time deals or accounting shifts.

fixed currency sales financial

"Fixed currency sales increased 7%, driven by a 5% benefit from the Ovivo Electronics acquisition"

special (gains) and charges financial

"Special (gains) and charges for the first quarter of 2026 includes $45.5 million, net of tax"

free cash flow financial

"We define free cash flow as net cash provided by operating activities less cash outlays for capital expenditures."

Free cash flow is the amount of money a company has left over after paying all its expenses and investing in its business, like buying equipment or updating facilities. It shows how much cash is available to reward shareholders, pay down debt, or save for future growth. This helps investors understand if a company is financially healthy and able to grow.

non-GAAP adjusted operating income financial

"Non-GAAP adjusted operating income increased 15%, as accelerated sales growth and improved productivity"

Earnings Snapshot

Net sales: $4,066.1 million · Guidance included

Q1 2026

Net sales $4,066.1 million +10% vs Q1 2025

Reported diluted EPS $1.52 +8% vs Q1 2025

Adjusted diluted EPS $1.70 +13% vs Q1 2025

Adjusted operating income $679.7 million +15% vs Q1 2025

Guidance

For full year 2026, Ecolab expects adjusted diluted EPS of $8.43–$8.63, representing 12%–15% growth over 2025, with reported sales up 9%–11% and adjusted operating income growing 14%–16%. For Q2 2026, adjusted diluted EPS is expected between $2.02 and $2.12, up 7%–12%.

Understanding 8-K Material Events →

0000031462false00000314622026-04-282026-04-28

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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FORM 8-K

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CURRENT REPORT

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

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

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ECOLAB INC.

(Exact name of registrant as specified in its charter)

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

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

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

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(Not applicable)

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

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

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

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

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

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

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

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

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

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

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Item 2.02 Results of Operations and Financial Condition.

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

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Cautionary Statements Regarding Forward Looking Information.

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

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Item 9.01 Financial Statements and Exhibits.

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(d) Exhibits.

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

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

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2

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SIGNATURE

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

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

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3

Exhibit 99.1

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News Release

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Investor Contact:	Media Contact:
Andrew Hedberg (651) 250-2185	Victoria Whitney (651) 250-4724
Andrew Pearson (651) 250-3654	​

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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%

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FIRST QUARTER HIGHLIGHTS

● Ecolab delivered another quarter of double-digit EPS growth, driven by continued strong value pricing, accelerated volume growth and solid operating income margin expansion.

● Reported sales $4.1 billion, +10%. Organic sales accelerated to +4%, led by accelerated growth in Life Sciences, Global High-Tech, Institutional and Specialty. Pest Elimination and Food & Beverage continued to deliver strong growth.

● Reported operating income margin 15.3%. Adjusted operating income margin increased 70 bps to 16.7%.

● Reported diluted EPS $1.52, +8%. Adjusted diluted EPS $1.70, +13%.

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MAINTAINS 2026 OUTLOOK

● 2026: Continue to expect adjusted diluted EPS in the $8.43 to $8.63 range, +12% to 15%, excluding the impact of the pending CoolIT Systems acquisition. Ecolab expects to quickly offset rising commodity costs through accelerating pricing, record new business wins and improved productivity.

● 2Q 2026: Expect adjusted diluted EPS in the $2.02 to $2.12 range, +7% to 12%. This range reflects a short transition period as benefits from the energy surcharge progressively build to offset higher commodity costs.

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First Quarter Ended March 31

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Reported

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Adjusted

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(unaudited)

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Public Currency Rates

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%

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Public Currency Rates

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%

(millions, except per share)

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2026

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2025

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Change

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2026

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2025

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Change

Net sales

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$4,066.1

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$3,695.0

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10

%

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$4,066.1

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$3,695.0

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10

%

Operating income

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622.0

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555.3

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12

%

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679.7

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589.6

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15

%

Net income attributable to Ecolab

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432.6

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402.5

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7

%

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482.5

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427.1

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13

%

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Diluted earnings per share attributable to Ecolab

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$1.52

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$1.41

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8

%

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$1.70

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$1.50

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13

%

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Organic

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2026

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2025

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Change

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Net sales

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$3,957.3

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$3,823.1

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4

%

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Operating income

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664.9

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616.2

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8

%

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1

ST. PAUL, Minn., April 28, 2026

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CEO Comment

Christophe Beck, Ecolab’s chairman, president and chief executive officer, said, “We delivered another strong quarter, with accelerated sales growth and double-digit earnings growth reflecting the strength of our growth engines and the improving performance of our core businesses. That performance was driven by strong value pricing, accelerated volume growth and improved productivity, demonstrating the power of our technology- and service-led model and the way our teams execute every day to deliver for customers in a complex operating environment.

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“Accelerated organic sales growth this quarter was led by our growth engines, which collectively strengthened over the prior quarter. Life Sciences accelerated to 11% growth, driven by bioprocessing, which more than doubled its sales during the quarter. Pest Elimination grew 7%, with strong gains from our One Ecolab growth initiative and our new pest intelligence offering. Ecolab Digital and Global High-Tech both grew more than 20%, reflecting strong customer demand for connected, outcome-based solutions. Our core businesses also delivered strong performance as Institutional and Specialty both improved, and Food & Beverage continued to significantly outperform market trends.

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“During the quarter, we responded quickly to sharply rising global energy costs driven by geopolitical developments. We took decisive actions across our supply chain, procurement and operations to absorb cost pressures wherever possible. We also announced a global energy surcharge to mitigate the dramatic rise in energy prices. As a result, commodity costs are expected to increase high‑single digits starting in the second quarter, and we expect those costs to remain high through the end of the year. Our priority is, and always will be, being there for our customers and supporting their operations no matter what the environment looks like.

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“As we move into the second quarter, we expect a short transition period as we absorb rising commodity costs, while the benefits from the energy surcharge progressively build. Exiting the second quarter, we expect accelerating pricing to cover the dollar impact from higher commodity costs, with gross margin stabilizing in the second half of the year. With this, along with strong new business wins and improved productivity, we expect Ecolab’s performance to strengthen in the second half of the year and are reiterating our expectation to deliver 12-15% adjusted EPS growth in 2026, excluding the impact of the recently announced acquisition of CoolIT Systems.

2

“The pending acquisition of CoolIT is an important strategic step for Ecolab, further strengthening our Global High-Tech growth engine and extending our leadership in high-performance cooling for data centers. Our combined end-to-end cooling technologies enable leading hyperscale and colocation data centers to put more power towards computing, with less water and energy consumption. Overall, we are confident in our team’s ability to execute and deliver for customers and shareholders, supported by the strong momentum of our growth engines and solid performance in our core businesses.”

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First Quarter 2026 Consolidated Results

Ecolab’s first quarter reported sales increased 10%. Organic sales growth accelerated to 4% when compared to the prior year. Ecolab Digital sales increased 24% to $99 million, with double-digit growth across both software and enabling hardware subscriptions.

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First quarter 2026 reported operating income increased 12% including the impact of special gains and charges. Adjusted operating income increased 15%, as accelerated sales growth and improved productivity more than offset higher commodity costs and growth-oriented investments in the business.

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Reported other income in the first quarter of 2026 decreased $4 million. Reported net interest expense increased $14 million reflecting the impact of lower cash balances and new debt used to fund the Ovivo Electronics acquisition. Together, these items reduced adjusted earnings per share by $0.05 in the first quarter of 2026, while currency translation increased earnings per share by $0.08.

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The reported income tax rate for the first quarter of 2026 was 21.8% compared with the reported rate of 20.3% in the first quarter of 2025. Excluding special gains and charges and discrete tax items, the adjusted tax rate for the first quarter of 2026 was 21.0% compared with the adjusted tax rate of 20.8% in the first quarter of 2025.

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Reported net income increased 7% versus the prior year. Excluding the impact of special gains and charges and discrete tax items, adjusted net income increased 13% versus the prior year.

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Reported diluted earnings per share increased 8% versus the prior year. Adjusted diluted earnings per share increased 13% when compared against the first quarter of 2025.

3

Ecolab repurchased approximately 1.3 million shares of its common stock during the first quarter of 2026.

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First Quarter 2026 Segment Review

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Global Water

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(unaudited)

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First Quarter Ended March 31

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Organic

(millions)

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2026

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2025

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% Change

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% Change

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Fixed currency

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Sales

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$2,035.2

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$1,899.5

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7

%

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2

%

Operating income

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297.8

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278.7

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7

%

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0

%

Operating income margin

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14.6

%

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14.7

%

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Organic operating income margin

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14.3

%

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14.7

%

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Public currency

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Sales

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$2,043.0

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$1,826.4

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12

%

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Operating income

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299.3

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264.1

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13

%

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The Global Water segment includes Heavy Water, Light Water, High-Tech, Food & Beverage, and Paper

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Fixed currency sales increased 7%, driven by a 5% benefit from the Ovivo Electronics acquisition and organic sales growth of 2%. Performance was led by more than 20% organic growth in Global High-Tech, reflecting robust growth across both microelectronics and data centers. Food & Beverage continued to grow mid-single digits, driven by attractive new business wins from our One Ecolab growth strategy. Light Water delivered steady performance, driven by solid gains in transportation. Collectively, the headwind from softer sales in Heavy Water and Paper stabilized, driven by good new business wins. Organic operating income was stable as sales growth offset higher commodity costs and growth-oriented investments in the business. Global Water’s underlying performance remained strong when excluding Heavy Water and Paper, which together reduced organic sales growth by low-single digits and organic operating income growth by upper-single digits.

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4

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Global Institutional & Specialty

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(unaudited)

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First Quarter Ended March 31

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Organic

(millions)

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2026

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2025

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% Change

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% Change

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Fixed currency

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Sales

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$1,507.7

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$1,454.8

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4

%

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4

%

Operating income

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347.5

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308.4

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13

%

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13

%

Operating income margin

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23.0

%

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21.2

%

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Organic operating income margin

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23.0

%

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21.2

%

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Public currency

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Sales

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$1,511.4

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$1,418.0

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7

%

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Operating income

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348.2

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301.2

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16

%

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Fixed currency and organic sales growth both improved to 4%. Institutional’s improved performance was driven by good growth with hospitality customers. Specialty’s sales grew high-single digits, with accelerated growth driven by robust new business wins and continued value pricing. Organic operating income increased 13%, as strong sales growth more than offset higher commodity costs.

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Global Pest Elimination

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(unaudited)

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First Quarter Ended March 31

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Organic

(millions)

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2026

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2025

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% Change

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% Change

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Fixed currency

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Sales

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$310.1

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$287.4

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8

%

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7

%

Operating income

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51.7

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47.7

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8

%

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10

%

Operating income margin

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16.7

%

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16.6

%

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Organic operating income margin

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17.0

%

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16.6

%

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Public currency

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Sales

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$310.8

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$280.6

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11

%

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Operating income

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51.9

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46.5

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12

%

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Fixed currency sales increased 8%, reflecting 7% organic growth and a 1% benefit from attractive, targeted acquisitions in North America. Strong organic sales growth was led by robust gains in restaurants, food retail, food & beverage and healthcare, which continue to benefit from our One Ecolab growth strategy. Organic operating income increased 10% as strong sales growth and improved productivity more than offset growth-oriented investments, including pest intelligence.

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Global Life Sciences

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(unaudited)

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First Quarter Ended March 31

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Organic

(millions)

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2026

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2025

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% Change

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% Change

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Fixed currency

​

​

​

​

​

​

​

​

​

​

​

​

Sales

​

$200.9

​

​

$181.4

​

​

11

%

​

11

%

Operating income

​

37.5

​

​

31.0

​

​

21

%

​

21

%

Operating income margin

​

18.7

%

​

17.1

%

​

​

​

​

​

​

Organic operating income margin

​

18.7

%

​

17.1

%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Public currency

​

​

​

​

​

​

​

​

​

​

​

​

Sales

​

$200.9

​

​

$170.0

​

​

18

%

​

​

​

Operating income

​

37.7

​

​

26.6

​

​

42

%

​

​

​

​

​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Fixed currency and organic sales growth both accelerated to 11%. This strong growth was driven by bioprocessing, which more than doubled its sales during the quarter. This, along with robust growth in pharmaceutical & personal care, overcame temporary capacity constraints within Life Sciences’ industrial water purification business. Organic operating income increased 21%, as strong sales growth and lower supply chain costs more than offset unfavorable mix and growth-oriented investments in the business. Life Sciences’ current upper-teens organic operating income margin reflects strong underlying profitability and continued investments in breakthrough innovation, global capabilities, and capacity to unlock this very attractive, long-term growth opportunity.

​

​	​	​	​	​	​	​
Corporate	​	​	​	​	​	​
​	​	​	​	​	​	​
(unaudited)	​	First Quarter Ended March 31
(millions)	​ ​ ​	2026		​	2025
​	​	​	​	​	​	​
Public currency	​	​	​	​	​	​
Corporate operating expense	​	​	​	​	​	​
Transformational acquisition amortization	​	$57.4	​	​	$48.8	​
Special (gains) and charges	​	57.7	​	​	34.3	​
Total Corporate operating expense (income)	​	$115.1	​	​	$83.1	​

​

First quarter of 2026 corporate segment includes:

● amortization expense of $28 million related to the Nalco merger intangible assets, $22 million related to Purolite acquisition intangible assets and $8 million related to the Ovivo Electronics acquisition intangible assets

6

● special gains and charges were a net charge of $58 million, primarily related to One Ecolab and acquisition and integration costs for the Ovivo Electronics and pending CoolIT Systems acquisitions

Special gains and charges for the first quarter of 2025 impacting operating expense were a net charge of $34 million primarily related to One Ecolab.

​

Business Outlook

2026

Long-term growth trends in water, hygiene, infection prevention, and digital technologies continue to fuel resilient demand for Ecolab’s innovative technologies and services. Strong momentum in Ecolab’s growth engines, which include Global High-Tech, Life Sciences, Pest Elimination and Ecolab Digital, is expected to continue to strengthen Ecolab’s overall performance. Ecolab’s investments in these areas position the company well to capitalize on these attractive long-term high-growth, high-margin opportunities.

​

In the near-term, the global operating environment remains unpredictable, including constantly evolving geopolitics and international trade policy, which are resulting in rising commodity costs and emerging challenges in the Middle East. Importantly, the company is very well positioned to quickly mitigate the impact of these challenges. Over the past few years, Ecolab’s team has demonstrated it can adjust quickly to deliver high performance in almost any environment, which is why even with these dynamic macroeconomic conditions, Ecolab’s confidence in its performance trajectory remains strong. Pricing is expected to progressively accelerate over the next few quarters as the energy surcharge gets implemented. At the same time, Ecolab remains focused on delivering incremental total value to customers that over time will exceed the total price increases. As the company exits the second quarter, it expects accelerating pricing to cover the dollar impact from higher commodity costs, with gross margin stabilizing in the second half of the year.

​

With progressively accelerating pricing and the acquisition of Ovivo Electronics, Ecolab expects 2026 reported sales to increase 9% to 11%. Organic sales growth is expected to accelerate to the 6% to 7% range in the second half of the year as pricing strengthens and volumes continue to grow. The company anticipates adjusted operating income margin to expand to approximately 19% in 2026, resulting in adjusted operating income growth of 14% to 16%.

​

In total, Ecolab continues to expect full year 2026 adjusted diluted earnings per share in the $8.43 to

7

$8.63 range, rising 12% to 15% compared with adjusted diluted earnings per share of $7.53 in 2025. This outlook excludes the impact of the recently announced acquisition of CoolIT Systems, which is expected to close during the third quarter.

The company currently anticipates quantifiable special charges in 2026 to be approximately $0.60 to $0.65 per share, principally related to restructuring charges. Other than the special gains and charges noted above, other such amounts are not currently quantifiable.

​

2026 – Second Quarter

Ecolab expects second quarter 2026 adjusted diluted earnings per share in the $2.02 to $2.12 range, rising 7% to 12% compared with adjusted diluted earnings per share of $1.89 a year ago. This range reflects a short transition period as benefits from the energy surcharge progressively build to offset higher commodity costs.

​

The company currently expects quantifiable special charges in the second quarter of 2026 to be approximately $0.22 per share, principally related to restructuring charges. Other than the special gains and charges noted above, other such amounts are not currently quantifiable.

​

About Ecolab

A trusted partner for millions of customers, Ecolab (NYSE:ECL) is a global leader in water, hygiene and infection prevention solutions and services that protect people and the resources vital to life. For more than a century, Ecolab has advanced innovation by integrating science-based solutions, data-driven insights, AI technology and world-class service. This unique combination enables Ecolab to partner with customers to define what best-in-class looks like and scale it across their operations, helping them achieve peak performance. Today, Ecolab delivers $16 billion in annual sales, employs 48,000 associates and serves customers in more than 170 countries and 40 industries. The company helps protect one-third of the world’s food production and a quarter of the power generated while delivering innovative solutions across food, hospitality, healthcare, data centers, microelectronics and life sciences. As the world’s water company, Ecolab plays an important role in AI growth by supporting the full water needs of advanced computing—from ultra‑pure water for chip manufacturing, to water solutions that support the power behind AI, to direct liquid cooling systems for high‑density computing that improves performance while reducing environmental impact through circular water use. In life sciences, Ecolab delivers end to end solutions that support the development and manufacturing of life-saving drugs, helping customers operate safely and consistently at scale while improving performance and reducing environmental impact. Through its comprehensive approach, Ecolab

8

protects what’s vital, with a goal by 2030 to help protect 2 billion people from infections and conserve enough drinking water for 1 billion people, while continuing to enhance business performance.  

Ecolab. Protecting What’s Vital.

www.ecolab.com

​

Ecolab will host a live webcast to review the first quarter earnings announcement today at 1:00 p.m. Eastern Time. The webcast, along with related materials, will be available to the public on Ecolab's website at www.ecolab.com/investor. A replay of the webcast and related materials will be available at that site.

​

Cautionary Statements Regarding Forward-Looking Information 

This news release contains certain statements relating to future events and our intentions, beliefs, expectations and predictions for the future which are forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. Words or phrases such as “will likely result,” “are expected to,” “will continue,” “is anticipated,” “we believe,” “we expect,” “estimate,” “project,” “may,” “will,” “intend,” “plan,” “believe,” “target,” “forecast” (including the negative or variations thereof) or similar terminology used in connection with any discussion of future plans, actions or events generally identify forward-looking statements. These forward-looking statements include, but are not limited to, statements regarding macroeconomic conditions and our financial and business performance and prospects, including sales, earnings, special gains and charges, raw material costs, margins, pricing, currency translation, productivity, investments, acquisitions and new business. These statements are based on the current expectations of management of the company. There are a number of risks and uncertainties that could cause actual results to differ materially from the forward-looking statements included in this news release. In particular, the ultimate results of any restructuring initiative depend on a number of factors, including the development of final plans, the impact of local regulatory requirements regarding employee terminations, the time necessary to develop and implement the restructuring initiatives and the level of success achieved through such actions in improving competitiveness, efficiency and effectiveness.

​

Additional risks and uncertainties that may affect operating results and business performance are set forth under Item 1A of our most recent Form 10-K, and our other public filings with the Securities and Exchange Commission (the "SEC"), and include the impact of economic factors such as the worldwide economy, interest rates, foreign currency risk, reduced sales and earnings in our international operations resulting from the weakening of local currencies versus the U.S. dollar,

9

demand uncertainty, supply chain challenges and inflation; the vitality of the markets we serve; exposure to global economic, political and legal risks related to our international operations, including international trade policies, geopolitical instability and the escalation of armed conflicts; our increasing reliance on artificial intelligence technologies in our products, services and operations; information technology infrastructure failures or breaches in data security; difficulty in procuring raw materials or fluctuations in raw material costs; our ability to successfully execute organizational change and management transitions; the occurrence of severe public health outbreaks not limited to COVID-19; our ability to acquire complementary businesses and to effectively integrate such businesses; our ability to execute key business initiatives; our ability to successfully compete with respect to value, innovation and customer support; pressure on operations from consolidation of customers or vendors; restraints on pricing flexibility due to contractual obligations and our ability to meet our contractual commitments; the costs and effects of complying with laws and regulations, including those relating to the environment, climate change standards, and to the manufacture, storage, distribution, sale and use of our products, as well as to the conduct of our business generally, including labor and employment and anti-corruption; potential safety incidents; potential chemical spill or release; potential to incur significant tax liabilities or indemnification liabilities relating to the separation and split-off of our ChampionX business; the occurrence of litigation or claims, including class action lawsuits; the loss or insolvency of a major customer or distributor; repeated or prolonged government and/or business shutdowns or similar events; acts of war or terrorism; natural or man-made disasters; water shortages; severe weather conditions; our commitments, goals, targets, objectives and initiatives related to sustainability, and our public statements and disclosures regarding them; changes in tax laws and unanticipated tax liabilities; potential loss of deferred tax assets; our indebtedness, and any failure to comply with covenants that apply to our indebtedness; potential losses arising from the impairment of goodwill or other assets; and other uncertainties or risks reported from time to time in our reports to the SEC. In light of these risks, uncertainties, assumptions and factors, the forward-looking events discussed in this news release may not occur. We caution that undue reliance should not be placed on forward-looking statements, which speak only as of the date made. Ecolab does not undertake, and expressly disclaims, any duty to update any forward-looking statement whether as a result of new information, future events or changes in expectations, except as required by law.

10

Non-GAAP Financial Information  

This news release and certain of the accompanying tables include financial measures that have not been calculated in accordance with accounting principles generally accepted in the U.S. (“GAAP”).  

These non-GAAP financial measures may include:

​

•fixed currency sales

•organic sales  

•adjusted cost of sales

•adjusted gross profit

•adjusted gross margin

•fixed currency operating income

•fixed currency operating income margin

•adjusted operating income  

•adjusted fixed currency operating income  

•adjusted fixed currency operating income margin  

•organic operating income

•organic operating income margin

•adjusted tax rate

•adjusted net income attributable to Ecolab

•adjusted diluted earnings per share

•free cash flow

​

We provide these measures as additional information regarding our operating results. We use these non-GAAP measures internally to evaluate our performance and in making financial and operational decisions, including with respect to incentive compensation. We believe that our presentation of these measures provides investors with greater transparency with respect to our results of operations and that these measures are useful for period-to-period comparison of results.

​

Our non-GAAP financial measures for adjusted cost of sales, adjusted gross margin, adjusted gross profit and adjusted operating income exclude the impact of special (gains) and charges and our non-GAAP financial measures for adjusted tax rate, adjusted net income attributable to Ecolab and adjusted diluted earnings per share further exclude the impact of discrete tax items. Adjusted diluted earnings per share also excludes the impact of the Ovivo Electronics acquisition in the fourth quarter of 2025. We include items within special (gains) and charges and discrete tax items that we believe

11

can significantly affect the period-over-period assessment of operating results and not necessarily reflect costs and/or income associated with historical trends and future results. After tax special (gains) and charges are derived by applying the applicable local jurisdictional tax rate to the corresponding pre-tax special (gains) and charges.

​

We evaluate the performance of our international operations based on fixed currency rates of foreign exchange, which eliminate the translation impact of exchange rate fluctuations on our international results. Fixed currency amounts included in this release are based on translation into U.S. dollars at the fixed foreign currency exchange rates established by management at the beginning of 2026. We also provide our segment results based on public currency rates for informational purposes.  

Our reportable segments do not include the impact of intangible asset amortization from the Nalco, Purolite and Ovivo Electronics transactions or the impact of special (gains) and charges as these are not allocated to the Company’s reportable segments.

​

Our non-GAAP financial measures for organic sales, organic operating income and organic operating income margin are at fixed currency and exclude the impact of special (gains) and charges where applicable, the results of our acquired businesses from the first twelve months post acquisition and the results of divested businesses from the twelve months prior to divestiture.

​

We define free cash flow as net cash provided by operating activities less cash outlays for capital expenditures. It should not be inferred that the entire free cash flow amount is available for discretionary expenditures. It should not be considered a substitute for income or cash flow data prepared in accordance with U.S. GAAP and may not be comparable to similarly titled measures used by other companies. We believe free cash flow is meaningful to investors as it functions as a useful measure of performance and we use this measure as an indication of the strength of the Company and its ability to generate cash.

​

These non-GAAP financial measures are not in accordance with, or an alternative to, GAAP and may be different from non-GAAP measures used by other companies. Investors should not rely on any single financial measure when evaluating our business. We recommend that investors view these measures in conjunction with the GAAP measures included in this news release. Reconciliations of our non-GAAP measures are included in the following "Supplemental Non-GAAP Reconciliations" and “Supplemental Diluted Earnings per Share Information” tables included in this news release.

​

12

We do not provide reconciliations for non-GAAP estimates on a forward-looking basis (including those contained in this news release) when we are unable to provide a meaningful or accurate calculation or estimation of reconciling items and the information is not available without unreasonable effort. This is due to the inherent difficulty of forecasting the timing and amount of various items that have not yet occurred, are out of our control and/or cannot be reasonably predicted, and that would impact reported earnings per share and the reported tax rate, the most directly comparable forward-looking GAAP financial measures to adjusted earnings per share and the adjusted tax rate. For the same reasons, we are unable to address the probable significance of the unavailable information.

###

​

​

​

(ECL-E)

​

13

ECOLAB INC.

CONSOLIDATED STATEMENTS OF INCOME

(unaudited)

​

​	​	​	​	​	​	​	​
​	​	First Quarter Ended			​	​
​	​	March 31			​	%
(millions, except per share)	​	2026	​ ​	2025	​	Change
​	​	​	​	​	​	​	​
Product and equipment sales	​	$3,174.6	​	$2,901.9	​	​	​
Service and lease sales	​	891.5	​	793.1	​	​	​
Net sales	​	4,066.1	​	3,695.0	​	10	%
Product and equipment cost of sales	​	1,786.2	​	1,605.4	​	​	​
Service and lease cost of sales	​	509.1	​	454.8	​	​	​
Cost of sales (1)	​	2,295.3	​	2,060.2	​	11	%
Selling, general and administrative expenses	​	1,102.4	​	1,050.0	​	5	%
Special (gains) and charges (1)	​	46.4	​	29.5	​	​	​
Operating income	​	622.0	​	555.3	​	12	%
Other (income) expense	​	(8.8)	​	(13.0)	​	(32)	%
Interest expense, net	​	72.7	​	58.3	​	25	%
Income before income taxes	​	558.1	​	510.0	​	9	%
Provision for income taxes	​	121.5	​	103.5	​	17	%
Net income including noncontrolling interest	​	436.6	​	406.5	​	7	%
Net income attributable to noncontrolling interest	​	4.0	​	4.0	​	​	​
Net income attributable to Ecolab	​	$432.6	​	$402.5	​	7	%
​	​	​	​	​	​	​	​
Earnings attributable to Ecolab per common share			​	​	​	​	​
Basic	​	$1.53	​	$1.42	​	8	%
Diluted	​	$1.52	​	$1.41	​	8	%
​	​	​	​	​	​	​	​
Weighted-average common shares outstanding			​	​	​	​	​
Basic	​	282.0	​	283.4	​	0	%
Diluted	​	283.7	​	285.3	​	(1)	%
​	​	​	​	​	​	​	​
(1) Cost of sales and Special (gains) and charges in the Consolidated Statement of Income above include the following:
​	​	​	​	​	​	​	​
​	​	First Quarter Ended			​	​
​	​	March 31			​	​	​
(millions)	​	2026	​	2025	​	​	​
​	​	​	​	​	​	​	​
Cost of sales	​	​	​	​	​	​	​
One Ecolab	​	$1.6	​	$4.8	​	​	​
Other restructuring	​	9.7	​	-	​	​	​
Subtotal (a)	​	11.3	​	4.8	​	​	​
​	​	​	​	​	​	​	​
Special (gains) and charges	​	​	​	​	​	​	​
One Ecolab	​	31.4	​	39.4	​	​	​
Acquisition and integration activities	​	14.1	​	1.5	​	​	​
Sale of global surgical solutions business	​	-	​	1.6	​	​	​
Other	​	0.9	​	(13.0)	​	​	​
Subtotal	​	46.4	​	29.5	​	​	​
​	​	​	​	​	​	​	​
Total special (gains) and charges	​	$57.7	​	$34.3	​	​	​

​

​

(a) Special charges of $11.3 million and $4.8 million in the first quarter of 2026 and 2025, respectively, were recorded in product and equipment cost of sales.

14

ECOLAB INC.

REPORTABLE SEGMENT INFORMATION

(unaudited)

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

First Quarter Ended March 31

​

​

Fixed Currency Rates

​

Public Currency Rates

​

​

​

​

​

​

%

​

​

​

​

​

%

(millions)

​

2026

​ ​ ​

2025

​ ​ ​

Change

​ ​ ​

2026

​ ​ ​

2025

​ ​ ​

Change

Net Sales

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Global Water

​

$2,035.2

​

$1,899.5

​

7

%

​

$2,043.0

​

$1,826.4

​

12

%

Global Institutional & Specialty

​

1,507.7

​

1,454.8

​

4

%

​

1,511.4

​

1,418.0

​

7

%

Global Pest Elimination

​

310.1

​

287.4

​

8

%

​

310.8

​

280.6

​

11

%

Global Life Sciences

​

200.9

​

181.4

​

11

%

​

200.9

​

170.0

​

18

%

Subtotal at fixed currency rates

​

4,053.9

​

3,823.1

​

6

%

​

4,066.1

​

3,695.0

​

10

%

Currency impact

​

12.2

​

(128.1)

​

*

​

​

-

​

-

​

*

​

Consolidated reported GAAP net sales

​

$4,066.1

​

$3,695.0

​

10

%

​

$4,066.1

​

$3,695.0

​

10

%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Operating Income (loss)

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Global Water

​

$297.8

​

$278.7

​

7

%

​

$299.3

​

$264.1

​

13

%

Global Institutional & Specialty

​

347.5

​

308.4

​

13

%

​

348.2

​

301.2

​

16

%

Global Pest Elimination

​

51.7

​

47.7

​

8

%

​

51.9

​

46.5

​

12

%

Global Life Sciences

​

37.5

​

31.0

​

21

%

​

37.7

​

26.6

​

42

%

Corporate

​

(114.8)

​

(83.5)

​

*

​

​

(115.1)

​

(83.1)

​

*

​

Subtotal at fixed currency rates

​

619.7

​

582.3

​

6

%

​

622.0

​

555.3

​

12

%

Currency impact

​

2.3

​

(27.0)

​

*

​

​

-

​

-

​

*

​

Consolidated reported GAAP operating income

​

$622.0

​

$555.3

​

12

%

​

$622.0

​

$555.3

​

12

%

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

* Not meaningful.

​

As shown in the “Fixed Currency Rates” tables above, we evaluate the performance of our international operations based on fixed currency exchange rates, which eliminate the impact of exchange rate fluctuations on our international operations. Amounts shown in the “Public Currency Rates” tables above reflect amounts translated at actual public average rates of exchange prevailing during the corresponding period and are provided for informational purposes. The difference between the fixed currency exchange rates and the public currency exchange rates is reported as “Currency impact” in the “Fixed Currency Rates” tables above.

​

The Corporate segment includes amortization from the Nalco, Purolite and Ovivo Electronics transactions intangible assets. The Corporate segment also includes special (gains) and charges reported on the Consolidated Statement of Income.

​

15

ECOLAB INC.

CONSOLIDATED BALANCE SHEETS

(unaudited)

​

​	​	​	​	​	​	​	​	​	​
​	​	March 31		​	December 31			March 31
(millions)	​	2026		​	2025			2025
Assets	​	​	​	​	​	​	​	​	​
Current assets	​	​	​	​	​	​	​	​	​
Cash and cash equivalents	​	$519.8	​	​	$646.2	​	​	$1,162.6	​
Accounts receivable, net	​	3,280.2	​	​	3,249.4	​	​	2,857.1	​
Inventories	​	1,572.0	​	​	1,490.4	​	​	1,547.2	​
Other current assets	​	670.7	​	​	569.6	​	​	514.2	​
Total current assets	​	6,042.7	​	​	5,955.6	​	​	6,081.1	​
​	​	​	​	​	​	​	​	​	​
Property, plant and equipment, net	​	4,397.2	​	​	4,276.6	​	​	3,775.8	​
Goodwill	​	9,438.7	​	​	9,227.0	​	​	7,864.5	​
Other intangible assets, net	​	3,524.2	​	​	3,688.5	​	​	3,228.7	​
Operating lease assets	​	775.1	​	​	765.9	​	​	750.7	​
Other assets	​	862.7	​	​	782.7	​	​	665.6	​
Total assets	​	$25,040.6	​	​	$24,696.3	​	​	$22,366.4	​
​	​	​	​	​	​	​	​	​	​
Liabilities and Equity	​	​	​	​	​	​	​	​	​
Current liabilities	​	​	​	​	​	​	​	​	​
Short-term debt	​	$1,573.2	​	​	$870.4	​	​	$614.2	​
Accounts payable	​	2,054.8	​	​	2,071.0	​	​	1,765.6	​
Compensation and benefits	​	571.4	​	​	721.5	​	​	540.1	​
Income taxes	​	127.4	​	​	134.3	​	​	178.5	​
Other current liabilities	​	1,768.9	​	​	1,737.5	​	​	1,510.8	​
Total current liabilities	​	6,095.7	​	​	5,534.7	​	​	4,609.2	​
​	​	​	​	​	​	​	​	​	​
Long-term debt	​	6,922.5	​	​	7,365.9	​	​	6,997.6	​
Pension and postretirement benefits	​	547.6	​	​	546.1	​	​	590.2	​
Deferred income taxes	​	389.5	​	​	329.9	​	​	249.4	​
Operating lease liabilities	​	603.5	​	​	596.5	​	​	598.8	​
Other liabilities	​	449.8	​	​	518.7	​	​	417.5	​
Total liabilities	​	15,008.6	​	​	14,891.8	​	​	13,462.7	​
​	​	​	​	​	​	​	​	​	​
Equity	​	​	​	​	​	​	​	​	​
Common stock	​	370.2	​	​	369.4	​	​	368.6	​
Additional paid-in capital	​	7,643.7	​	​	7,521.3	​	​	7,298.2	​
Retained earnings	​	13,060.5	​	​	12,834.0	​	​	11,735.2	​
Accumulated other comprehensive loss	​	(1,626.1)	​	​	(1,874.3)	​	​	(2,064.2)	​
Treasury stock	​	(9,444.4)	​	​	(9,079.6)	​	​	(8,462.0)	​
Total Ecolab shareholders’ equity	​	10,003.9	​	​	9,770.8	​	​	8,875.8	​
Noncontrolling interest	​	28.1	​	​	33.7	​	​	27.9	​
Total equity	​	10,032.0	​	​	9,804.5	​	​	8,903.7	​
Total liabilities and equity	​	$25,040.6	​	​	$24,696.3	​	​	$22,366.4	​

​

​

​

​

​

​

​

​

​

​

​

​

16

ECOLAB INC.

SUPPLEMENTAL NON-GAAP RECONCILIATIONS

(unaudited)

​

​	​	​	​	​	​	​	​
​	​ ​ ​	First Quarter Ended					​ ​ ​
​	​	March 31					​
(millions, except percent and per share)	​	2026		​ ​	2025		​
​	​	​	​	​	​	​	​
Net sales	​	​	​	​	​	​	​
Reported GAAP net sales	​	$4,066.1	​	​	$3,695.0	​	​
Effect of foreign currency translation	​	(12.2)	​	​	128.1	​	​
Non-GAAP fixed currency sales	​	4,053.9	​	​	3,823.1	​	​
Effect of acquisitions and divestitures	​	(96.6)	​	​	-	​	​
Non-GAAP organic sales	​	$3,957.3	​	​	$3,823.1	​	​
​	​	​	​	​	​	​	​
Cost of sales	​	​	​	​	​	​	​
Reported GAAP cost of sales	​	$2,295.3	​	​	$2,060.2	​	​
Special (gains) and charges	​	11.3	​	​	4.8	​	​
Non-GAAP adjusted cost of sales	​	$2,284.0	​	​	$2,055.4	​	​
​	​	​	​	​	​	​	​
Gross profit	​	​	​	​	​	​	​
Reported GAAP gross profit	​	$1,770.8	​	​	$1,634.8	​	​
Special (gains) and charges	​	11.3	​	​	4.8	​	​
Non-GAAP adjusted gross profit	​	$1,782.1	​	​	$1,639.6	​	​
​	​	​	​	​	​	​	​
Gross margin	​	​	​	​	​	​	​
Reported GAAP gross margin	​	43.6	%	​	44.2	%	​
Non-GAAP adjusted gross margin	​	43.8	%	​	44.4	%	​
​	​	​	​	​	​	​	​
Operating income	​	​	​	​	​	​	​
Reported GAAP operating income	​	$622.0	​	​	$555.3	​	​
Special (gains) and charges at public currency rates	​	57.7	​	​	34.3	​	​
Non-GAAP adjusted operating income	​	679.7	​	​	589.6	​	​
Effect of foreign currency translation	​	(3.4)	​	​	26.6	​	​
Non-GAAP adjusted fixed currency operating income	​	676.3	​	​	616.2	​	​
Effect of acquisitions and divestitures	​	(11.4)	​	​	-	​	​
Non-GAAP organic operating income	​	$664.9	​	​	$616.2	​	​
​	​	​	​	​	​	​	​
Operating income margin	​	​	​	​	​	​	​
Reported GAAP operating income margin	​	15.3	%	​	15.0	%	​
Non-GAAP adjusted operating income margin	​	16.7	%	​	16.0	%	​
Non-GAAP organic operating income margin	​	16.8	%	​	16.1	%	​
​	​	​	​	​	​	​	​

​

​

17

ECOLAB INC.

SUPPLEMENTAL NON-GAAP RECONCILIATIONS

(unaudited)

​

​	​	​	​	​	​	​	​
​	​ ​ ​	First Quarter Ended					​ ​ ​
​	​	March 31					​
(millions, except percent and per share)	​	2026		​ ​	2025		​
Net Income attributable to Ecolab	​	​	​	​	​	​	​
Reported GAAP net income attributable to Ecolab	​	$432.6	​	​	$402.5	​	​
Special (gains) and charges, after tax	​	45.5	​	​	25.1	​	​
Discrete tax net expense (benefit)	​	4.4	​	​	(0.5)	​	​
Non-GAAP adjusted net income attributable to Ecolab	​	$482.5	​	​	$427.1	​	​
​	​	​	​	​	​	​	​
Diluted EPS attributable to Ecolab	​	​	​	​	​	​	​
Reported GAAP diluted EPS	​	$1.52	​	​	$1.41	​	​
Special (gains) and charges, after tax	​	0.16	​	​	0.09	​	​
Discrete tax net expense (benefit)	​	0.02	​	​	0.00	​	​
Non-GAAP adjusted diluted EPS	​	$1.70	​	​	$1.50	​	​
​	​	​	​	​	​	​	​
Provision for Income Taxes	​	​	​	​	​	​	​
Reported GAAP tax rate	​	21.8	%	​	20.3	%	​
Special gains and charges	​	(0.1)	​	​	0.4	​	​
Discrete tax items	​	(0.7)	​	​	0.1	​	​
Non-GAAP adjusted tax rate	​	21.0	%	​	20.8	%	​

​

​

​

18

ECOLAB INC.

SUPPLEMENTAL NON-GAAP RECONCILIATIONS

(unaudited)

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

First Quarter Ended March 31

​

​

2026

​

2025

(millions)

​

Fixed Currency

​

Impact of Acquisitions and Divestitures

​

Organic

​

Fixed Currency

​

Impact of Acquisitions and Divestitures

​

Organic

Net Sales

​

​

​

​

​

​

​

​

​

​

​

​

Global Water

​

$2,035.2

​

($95.0)

​

$1,940.2

​

$1,899.5

​

$-

​

$1,899.5

Global Institutional & Specialty

​

1,507.7

​

-

​

1,507.7

​

1,454.8

​

-

​

1,454.8

Global Pest Elimination

​

310.1

​

(1.6)

​

308.5

​

287.4

​

-

​

287.4

Global Life Sciences

​

200.9

​

-

​

200.9

​

181.4

​

-

​

181.4

Subtotal at fixed currency rates

​

4,053.9

​

(96.6)

​

3,957.3

​

3,823.1

​

-

​

3,823.1

Currency impact

​

12.2

​

​

​

​

​

(128.1)

​

​

​

​

Consolidated reported GAAP net sales

​

$4,066.1

​

​

​

​

​

$3,695.0

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Operating Income (loss)

​

​

​

​

​

​

​

​

​

​

​

​

Global Water

​

$297.8

​

($20.4)

​

$277.4

​

$278.7

​

$-

​

$278.7

Global Institutional & Specialty

​

347.5

​

-

​

347.5

​

308.4

​

-

​

308.4

Global Pest Elimination

​

51.7

​

0.6

​

52.3

​

47.7

​

-

​

47.7

Global Life Sciences

​

37.5

​

-

​

37.5

​

31.0

​

-

​

31.0

Corporate

​

(58.2)

​

8.4

​

(49.8)

​

(49.6)

​

-

​

(49.6)

Subtotal at fixed currency rates

​

676.3

​

(11.4)

​

664.9

​

616.2

​

-

​

616.2

Special (gains) and charges at fixed currency rates

​

56.6

​

​

​

​

​

33.9

​

​

​

​

Reported OI at fixed currency rates

​

619.7

​

​

​

​

​

582.3

​

​

​

​

Currency impact

​

2.3

​

​

​

​

​

(27.0)

​

​

​

​

Consolidated reported GAAP operating income

​

$622.0

​

​

​

​

​

$555.3

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

19

ECOLAB INC.

SUPPLEMENTAL DILUTED EARNINGS PER SHARE INFORMATION

(unaudited)

​

​

The table below provides a reconciliation of diluted earnings per share, as reported, to the non-GAAP measure of adjusted diluted earnings per share.

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​ ​ ​

First

​ ​ ​

Second

​ ​ ​

Six

​ ​ ​

Third

​ ​ ​

Nine

​ ​ ​

Fourth

​ ​ ​

​ ​ ​

​

​

​

Quarter

​

Quarter

​

Months

​

Quarter

​

Months

​

Quarter

​

Year

​

​

​

Ended

​

Ended

​

Ended

​

Ended

​

Ended

​

Ended

​

Ended

​

​

​

Mar. 31

​

June 30

​

June 30

​

Sept. 30

​

Sept. 30

​

Dec. 31

​

Dec. 31

​

​

​

2025

​

2025

​

2025

​

2025

​

2025

​

2025

​

2025

​

Diluted earnings per share, as reported (U.S. GAAP)

​

$1.41

​

$1.84

​

$3.25

​

$2.05

​

$5.30

​

$1.98

​

$7.28

​

Adjustments:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Special (gains) and charges (1)

​

0.09

​

0.07

​

0.16

​

0.08

​

0.24

​

0.21

​

0.45

​

Discrete tax expense (benefits) (2)

​

0.00

​

(0.02)

​

(0.02)

​

(0.06)

​

(0.08)

​

(0.12)

​

(0.21)

​

Impact of Ovivo Electronics on diluted earnings per share

​

0.00

​

0.00

​

0.00

​

0.00

​

0.00

​

0.01

​

0.01

​

Adjusted diluted earnings per share (Non-GAAP)

​

$1.50

​

$1.89

​

$3.39

​

$2.07

​

$5.46

​

$2.08

​

$7.53

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​ ​ ​

First

​ ​ ​

Second

​ ​ ​

Six

​ ​ ​

Third

​ ​ ​

Nine

​ ​ ​

Fourth

​ ​ ​

​ ​ ​

​

​

Quarter

​

Quarter

​

Months

​

Quarter

​

Months

​

Quarter

​

Year

​

​

Ended

​

Ended

​

Ended

​

Ended

​

Ended

​

Ended

​

Ended

​

​

Mar. 31

​

June 30

​

June 30

​

Sept. 30

​

Sept. 30

​

Dec. 31

​

Dec. 31

​

​

2026

​

2026

​

2026

​

2026

​

2026

​

2026

​

2026

Diluted earnings per share, as reported (U.S. GAAP)

​

$1.52

​

​

​

​

​

​

​

​

​

​

​

​

​

Adjustments:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Special (gains) and charges (3)

​

0.16

​

​

​

​

​

​

​

​

​

​

​

​

​

Discrete tax expense (benefits) (4)

​

0.02

​

​

​

​

​

​

​

​

​

​

​

​

​

Adjusted diluted earnings per share (Non-GAAP)

​

$1.70

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Per share amounts do not necessarily sum due to changes in shares outstanding and rounding.

​

(1) Special (gains) and charges for 2025 includes charges of $25.1 million, $20.6 million, $22.0 million and $59.7 million, net of tax, in the first, second, third and fourth quarters, respectively. These charges were primarily related to One Ecolab.

​

(2) Discrete tax expenses (benefits) for 2025 includes ($0.5) million, ($5.0) million, ($16.3) million and ($35.7) million in the first, second, third and fourth quarters, respectively. These expenses (benefits) are primarily associated with the recognition of deferred tax attributes, share-based compensation excess tax benefits, the filing of federal, state, and foreign tax returns, and other discrete expenses (benefits).

​

(3) Special (gains) and charges for 2026 includes $45.5 million, net of tax, in the first quarter. These charges were primarily related to One Ecolab and acquisition and integration costs for the Ovivo Electronics and pending CoolIT Systems acquisitions.

​

(4) Discrete tax expenses (benefits) for 2026 includes $4.4 million in the first quarter. These expenses (benefits) are primarily associated with share-based compensation excess tax benefits and other discrete expenses (benefits).

20

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 performance and prospects, including sales, earnings, special (gains) and charges, raw material costs, margins, pricing, currency translation, productivity, investments, acquisitions and new business. These statements are based on the current expectations of management. There are a number of risks and uncertainties that could cause actual results to differ materially from the forward-looking statements included in this communication. In particular, the ultimate results of any restructuring initiative depend on a number of factors, including the development of final plans, the impact of local regulatory requirements regarding employee terminations, the time necessary to develop and implement the restructuring initiatives and the level of success achieved through such actions in improving competitiveness, efficiency and effectiveness. Additional risks and uncertainties are set forth under Item 1A of our most recent Form 10-K, and our other public filings with the Securities and Exchange Commission (“SEC”), and include the impact of economic factors such as the worldwide economy, interest rates, foreign currency risk, reduced sales and earnings in our international operations resulting from the weakening of local currencies versus the U.S. dollar, demand uncertainty, supply chain challenges and inflation; the vitality of the markets we serve; exposure to global economic, political and legal risks related to our international operations, including international trade policies, geopolitical instability and the escalation of armed conflicts; our increasing reliance on artificial intelligence technologies in our products, services and operations; information technology infrastructure failures or breaches in data security; difficulty in procuring raw materials or fluctuations in raw material costs; our ability to successfully execute organizational change and management transitions; the occurrence of severe public health outbreaks not limited to COVID-19; our ability to acquire complementary businesses and to effectively integrate such businesses; our ability to execute key business initiatives; our ability to successfully compete with respect to value, innovation and customer support; the costs and effect of complying with laws and regulations; the occurrence of litigation or claims, including class action lawsuits; and other uncertainties or risks reported from time to time in our reports to the SEC. In light of these risks, uncertainties and factors, the forward-looking events discussed in this communication may not occur. We caution that undue reliance should not be placed on forward-looking statements, which speak only as of the date made. Ecolab does not undertake, and expressly disclaims, any duty to update any forward-looking statement, except as required by law. Non-GAAP Financial Information This communication includes Company information that does not conform to generally accepted accounting principles (GAAP). Management believes that a presentation of this information is meaningful to investors because it provides insight with respect to ongoing operating results of the Company and allows investors to better evaluate the financial results of the Company. These measures should not be viewed as an alternative to GAAP measures of performance. Furthermore, these measures may not be consistent with similar measures provided by other companies. Reconciliations of our non-GAAP measures included within this presentation are included in the “Non-GAAP Financial Measures” section of this presentation.

Accelerated sales growth, double-digit EPS growth 3 Reported sales +10%; organic growth +4% with strong pricing and improved volume growth Continued OI margin expansion, confident in delivering a 20% margin by 2027 Reported diluted EPS $1.52; adjusted diluted EPS $1.70, +13% Confident in delivering 12-15% adj. EPS growth in 2026, driven by accelerating organic sales growth ▪ Performance led by growth engines, which collectively accelerated, delivering low double-digit growth. ▪ Core performance was also strong as growth in Institutional & Specialty improved; Food & Beverage continued to deliver strong growth. ▪ Collectively, the headwind from Paper and Heavy Water sales stabilized, driven by good new business wins. ▪ Reported OI +12%, Adjusted OI +15%. ▪ Reported OI margin 15.3%. Adj. OI margin increased 70 bps to 16.7%. ▪ Remain confident in expanding OI margins beyond 20%. ▪ Ecolab delivered another strong quarter of double-digit EPS growth. ▪ Performance was driven by accelerated sales growth and solid operating income margin expansion. ▪ 2026 adj. EPS: $8.43 to $8.63, +12% to 15%, excluding the impact from the pending CoolIT Systems acquisition. Ecolab expects to quickly offset rising commodity costs through accelerating pricing, robust new business wins, and improved productivity. ▪ 2Q 2026 adj. EPS: $2.02 to $2.12, +7% to 12%. This range reflects a short transition period as benefits from the energy surcharge progressively build to offset higher commodity costs.

1Q overview ▪ Accelerated growth with reported sales +10%; organic sales +4% o Pricing +3%, supported by ongoing customer value delivery. o Volume +1%, accelerated growth driven by growth engines and good new business wins. ▪ Organic growth accelerated o Water +2%, strong double-digit growth in Global High-Tech and continued robust gains in Food & Beverage more than offset stabilizing Paper and Heavy Water sales. o Institutional & Specialty improved to +4%, growth in Institutional and Specialty both improved. o Pest Elimination +7%, with growth fueled by the One Ecolab enterprise growth strategy and Ecolab’s new pest intelligence offering. o Life Sciences accelerated to +11%, led by bioprocessing, which doubled its sales during the quarter. ▪ Reported diluted EPS $1.52 ▪ Adjusted diluted EPS $1.70, +13% o Strong performance was fueled by continued strong value pricing, accelerated volume growth and solid operating income margin expansion. Sales EPS 4

Expect 12-15% EPS growth and accelerating organic sales growth 2Q 2026 ▪ Ecolab expects second quarter 2026 adjusted diluted earnings per share in the $2.02 to $2.12 range, rising 7% to 12% compared with adjusted diluted earnings per share of $1.89 a year ago. This range reflects a short transition period as benefits from the energy surcharge progressively build to offset higher commodity costs. ▪ Long-term growth trends in water, hygiene, infection prevention, and digital technologies continue to fuel resilient demand for Ecolab’s innovative technologies and services. Strong momentum in Ecolab’s growth engines, which include Global High-Tech, Life Sciences, Pest Elimination and Ecolab Digital, is expected to continue to strengthen Ecolab’s overall performance. ▪ While the external environment remains dynamic, Ecolab’s team has demonstrated it can adjust quickly to deliver high performance in almost any environment. With this, Ecolab’s confidence in its performance trajectory remains strong. As the company exits the second quarter, it expects accelerating pricing to cover the dollar impact from higher commodity costs, with gross margin stabilizing in the second half of the year. With this, organic sales growth is expected to accelerate to the 6% to 7% range in the second half of the year. The company anticipates adjusted operating income margin to expand to approximately 19% in 2026, resulting in adjusted operating income growth of 14% to 16%. ▪ As a result, Ecolab continues to expect full year 2026 adjusted diluted earnings per share in the $8.43 to $8.63 range, rising 12% to 15% compared with adjusted diluted earnings per share of $7.53 in 2025. ▪ This outlook excludes the impact of the recently announced acquisition of CoolIT Systems, which is expected to close during the third quarter. 5

2026 guidance and long-term targets 6 2026 Guidance Reported sales growth +9% to 11% Organic sales growth 1H +4%, 2H +6% to 7% Adj. OI growth +14% to 16% Adj. OI margin 19%, +100 bps Adj. tax rate 20.5% to 21.5% Adj. EPS $8.43 to $8.63; +12% to 15% ORGANIC SALES GROWTH +5-7% OI MARGIN +100-150 BPS PER YEAR Long-Term Targets >20% ADJUSTED EPS GROWTH +12-15% 2026 guidance excludes the impact of the recently announced CoolIT Systems acquisition, which is expected to close in the third quarter of 2026

1Q 2026 sales growth detail 7 Amounts in the tables above do not necessarily sum due to rounding. Fixed Rate Organic % Change % Change Global Water Consolidated Food & Beverage 5% 5% Volume 1% Heavy Water -2% -2% Pricing 3% High-Tech 131% 25% Organic 4% Light Water 2% 2% Acq./Div. 3% Paper -2% -2% Fixed currency growth 6% Total Global Water 7% 2% Currency impact 4% Total 10% Global Institutional & Specialty Institutional 2% 2% Specialty 9% 9% Total Global Institutional & Specialty 4% 4% Global Pest Elimination 8% 7% Global Life Sciences 11% 11% % Change

All sales figures are organic unless otherwise noted 8 Global Water Segment Heavy Water Q2: Expect modestly lower sales as continued new business wins and strengthening pricing help to offset soft industry demand. Sales -2% ▪ As expected, sales were modestly lower as growth in downstream was offset by softer sales in basic industries. ▪ Downstream growth driven by improved performance across both refining and chemicals. ▪ Within basic industries, continued good growth in power, driven by new business wins and strengthening industry demand to support the power demand for AI, was more than offset by continued soft industry trends in primary metals. ▪ The impact of increasing water demand continues to be a critical issue for our customers, and one that Ecolab is uniquely positioned to help them solve. Our innovative circular water solutions, digital technologies, and service expertise deliver leading business outcomes and improved operational performance, while significantly reducing water and energy consumption. Sales +5% Food & Beverage Q2: Anticipate good sales growth as continued pricing and new business wins outperform market demand. ▪ Organic sales growth continued to significantly outperform market trends driven by robust new business and value pricing. ▪ Growth was led by strong gains in beverage & brew, dairy, and food. ▪ We continue to benefit from our One Ecolab enterprise selling approach to customers, where we combine our industry-leading cleaning and sanitizing and water treatment capabilities to deliver significant customer value through improved food safety, lower operating costs and water usage optimization.

9 Global Water Segment High-Tech Q2: Expect continued very strong sales growth across both microelectronics and data centers. Sales +25% ▪ Reported sales increased 131%, reflecting the acquisition of Ovivo Electronics. Very strong organic sales growth reflected robust and broad-based new business wins across microelectronics and data centers. ▪ Microelectronics: Accelerating double-digit growth was driven by strong new wins with leading semiconductor manufacturers. As next-gen semiconductor production increases water use intensity and complexity, Ecolab’s solutions enable chipmakers to maximize production and quality through unique circular water management, ultrapure water technologies, and a global network of industry experts. ▪ Data Centers: Broad-based strength was driven by strong growth with hyperscaler and colocation customers around the world. Ecolab’s cutting-edge, integrated cooling technologies improve performance and reliability, while reducing water and energy use. These mission critical needs continue to expand rapidly as AI workloads drive unprecedented demand for liquid-cooled infrastructure. Light Water Q2: Expect solid sales growth, driven by new business wins and strengthening pricing. Sales +2% ▪ Growth in Light reflects accelerated performance in transportation and green energy and continued strong performance in pharmaceuticals. ▪ Solid new business wins outperformed stable end-market trends. ▪ Ecolab is growing with new customers due to its industry-leading water management solutions, digital intelligence, and global service expertise to optimize operating costs and reduce water and energy use. All sales figures are organic unless otherwise noted

10 Global Water Segment Sales -2% Paper Q2: Expect sales to continue to stabilize as good new business wins and strengthening pricing help to offset soft market demand. ▪ As expected, Paper’s performance improved sequentially driven by continued new business and stabilizing customer production rates. ▪ Performance in tissue and towel, packaging and graphic paper all improved sequentially, led by good new business wins. ▪ While soft production rates continue to impact demand, Ecolab’s strong new business wins are helping to mitigate these unfavorable market impacts. New business wins continue to be driven by innovation and our global service expertise, which help our customers improve their performance, optimize their costs, and reduce their water consumption. All sales figures are organic unless otherwise noted

11 Institutional Specialty Global Institutional & Specialty Segment Sales +2% ▪ As expected, sales growth improved, reflecting good growth in hospitality, which more than offset softer sales to hospitals. o Hospitality: Performance remained steady, driven by value pricing and attractive new business wins from our One Ecolab growth initiative, overcoming softer end market activity. We continue to see good demand for Ecolab’s innovative products and service expertise that help customers improve performance, optimize labor, and reduce total costs. o Hospitals: As expected, modestly lower sales reflected continued low-margin business exits, partially offset by value pricing. Our new business efforts are focused on attractive long-term growth opportunities in the infection prevention and instrument reprocessing areas to drive profitable long-term growth. ▪ We remain focused on driving attractive long-term growth by capitalizing on One Ecolab growth opportunities and harnessing digital innovations like DishIQ, KitchenIQ, and AquaIQ. These efforts are delivering enhanced total customer value and generating attractive new business wins. Q2: We expect continued good growth in hospitality, partially offset by modestly lower sales to hospitals. Sales +9% Q2: Expect strong sales growth driven by robust new business and pricing. ▪ Specialty’s sales growth accelerated, driven by robust new business wins and continued value pricing. This robust fundamental performance continued to significantly outperform market trends. o Quick Service: Continued strong growth reflected good new business and our ongoing product and digital innovation.​ Demand across the quick service industry for our leading food safety and labor and cost optimization technologies continues to be strong, which we are uniquely positioned to capture. o Food Retail: Continued strong sales growth reflects new business wins and value pricing, continuing to outperform market trends. Our strong new business wins continued to be fueled by our One Ecolab growth initiative and digital innovation. As a trusted food safety partner for retailers, we continue to expand our competitive differentiation by helping our customers protect their brand, improve customer experience, and optimize operational performance. All sales figures are organic unless otherwise noted

12 Global Pest Elimination Segment ▪ Strong organic growth was led by robust gains in restaurants, food retail, food & beverage, and healthcare. This strong and broad-based performance continues to benefit from our One Ecolab enterprise selling approach. ▪ To fuel continued, strong long-term growth and market share gains, our focus is on rapidly rolling out our digital pest intelligence program to provide customers with enhanced service and value. This leading digital offering, along with our high service levels, is expanding the total value delivered to customers, extending our competitive advantages, and enhancing our long-term growth opportunities. Q2: Expect continued strong growth, driven by new customer wins as we leverage One Ecolab and our investments in pest intelligence. All sales figures are organic unless otherwise noted Sales +7% Pest Elimination

13 Global Life Sciences Segment Q2: Expect continued strong growth driven by good new business momentum and progressively improving industry trends. ▪ Accelerated sales growth reflected good new business wins that leverage our innovation and investments in new capabilities and capacity. ▪ Continued double-digit growth in bioprocessing along with strong growth in pharmaceutical & personal care overcame temporary capacity constraints within the industrial water purification business. New capacity for the industrial water purification business is expected to come online in the second half of 2026. ▪ The long-term growth opportunities for the Life Sciences industry are very attractive. We continue to invest and innovate to further expand our global capabilities and technical expertise across contamination control and purification technologies including bioprocessing to capitalize on this long-term growth opportunity. All sales figures are organic unless otherwise noted Sales +11% Life Sciences

Segment operating income performance ▪ Organic operating income was stable as sales growth offset higher commodity costs and growth-oriented investments in the business. ▪ Global Water’s underlying performance was strong when excluding Heavy Water and Paper, which together reduced organic operating income growth by upper-single digits. ▪ Organic operating income increased 10% as strong sales growth and improved productivity more than offset growth-oriented investments, including pest intelligence. ($ millions – fixed currency, unaudited) 14 Global Water 1Q 2026 1Q 2025 Change Operating income $297.8 $278.7 7% Operating income margin 14.6% 14.7% -10 bps Organic operating income $277.4 $278.7 0% Organic operating income margin 14.3% 14.7% -40 bps Global Institutional & Specialty 1Q 2026 1Q 2025 Change Operating income $347.5 $308.4 13% Operating income margin 23.0% 21.2% 180 bps Organic operating income $347.5 $308.4 13% Organic operating income margin 23.0% 21.2% 180 bps Global Life Sciences 1Q 2026 1Q 2025 Change Operating income $37.5 $31.0 21% Operating income margin 18.7% 17.1% 160 bps Organic operating income $37.5 $31.0 21% Organic operating income margin 18.7% 17.1% 160 bps Global Pest Elimination 1Q 2026 1Q 2025 Change Operating income $51.7 $47.7 8% Operating income margin 16.7% 16.6% 10 bps Organic operating income $52.3 $47.7 10% Organic operating income margin 17.0% 16.6% 40 bps ▪ Organic operating income increased 21%, as strong sales growth and lower supply chain costs more than offset unfavorable mix and growth-oriented investments in the business. ▪ Life Sciences’ current upper-teens organic operating income margin reflects strong underlying profitability and continued investments in breakthrough innovation, global capabilities, and capacity to unlock this very attractive, long-term growth opportunity. ▪ Organic operating income increased 13%, as strong sales growth more than offset higher commodity costs.

Consolidated margin performance ▪ Gross margin declined due to the impact of recent acquisitions. Underlying gross margin was stable as strong pricing was offset by higher commodity costs. ▪ SG&A to sales improved as good productivity gains and the favorable impact of recent acquisitions more than offset growth-oriented investments in the business. ▪ Operating margin expanded as accelerated sales growth and improved productivity more than offset higher commodity costs and growth-oriented investments in the business. Gross Margin SG&A Operating Margin 15 $ millions, unaudited 1Q 2026 1Q 2025 Change Gross profit $1,770.8 $1,634.8 8% Gross margin 43.6% 44.2% -60 bps Adjusted gross profit $1,782.1 $1,639.6 9% Adjusted gross margin 43.8% 44.4% -60 bps SG&A $1,102.4 $1,050.0 5% % of Sales 27.1% 28.4% -130 bps Reported operating income $622.0 $555.3 12% Reported operating income margin 15.3% 15.0% 30 bps Adjusted operating income $679.7 $589.6 15% Adjusted operating income margin 16.7% 16.0% 70 bps Organic operating income $664.9 $616.2 8% Organic operating income margin 16.8% 16.1% 70 bps

Balance sheet / cash flow * EBITDA and Adjusted EBITDA are non-GAAP measures. EBITDA is defined as net income including non-controlling interest with the sum of provision for income taxes, net interest expense, depreciation and amortization added back. Adjusted EBITDA further adds back special (gains) and charges impacting EBITDA. The inputs to EBITDA reflect the trailing twelve months of activity for the period presented. See “Non-GAAP Financial Measures” section of this presentation for corresponding reconciliations. 16 Summary Balance Sheet (millions, unaudited) 2026 2025 (millions, unaudited) 2026 2025 Cash and cash eq. $519.8 $1,162.6 Short-term debt $1,573.2 $614.2 Accounts receivable, net 3,280.2 2,857.1 Accounts payable 2,054.8 1,765.6 Inventories 1,572.0 1,547.2 Other current liabilities 2,467.7 2,229.4 Other current assets 670.7 514.2 Long-term debt 6,922.5 6,997.6 PP&E, net 4,397.2 3,775.8 Pension/Postretirement 547.6 590.2 Goodwill and intangibles 12,962.9 11,093.2 Other liabilities 1,442.8 1,265.7 Other assets 1,637.8 1,416.3 Total equity 10,032.0 8,903.7 Total assets $25,040.6 $22,366.4 Total liab. and equity $25,040.6 $22,366.4 Selected Cash Flow items (millions, unaudited) 2026 2025 (unaudited) 2026 2025 Cash from op. activities $445.9 $369.4 Total Debt/Total Capital 45.9% 46.1% Depreciation 180.5 161.2 Net Debt/Total Capital 44.3% 42.0% Amortization 82.6 74.9 Net Debt/EBITDA* 2.1 1.7 Capital expenditures 348.5 237.9 Net Debt/Adjusted EBITDA* 2.0 1.8 March 31 March 31 Three Months Ended Selected Balance Sheet measures March 31 March 31

Non-GAAP financial measures 17 (millions, except percent and per share) Net sales Reported GAAP net sales $4,066.1 $3,695.0 Effect of foreign currency translation (12.2) 128.1 Non-GAAP fixed currency sales 4,053.9 3,823.1 Effect of acquisitions and divestitures (96.6) - Non-GAAP organic sales $3,957.3 $3,823.1 Cost of sales Reported GAAP cost of sales $2,295.3 $2,060.2 Special (gains) and charges 11.3 4.8 Non-GAAP adjusted cost of sales $2,284.0 $2,055.4 Gross profit Reported GAAP gross profit $1,770.8 $1,634.8 Special (gains) and charges 11.3 4.8 Non-GAAP adjusted gross profit $1,782.1 $1,639.6 Gross margin Reported GAAP gross margin 43.6 % 44.2 % Non-GAAP adjusted gross margin 43.8 % 44.4 % First Quarter Ended March 31 2026 2025

Non-GAAP financial measures 18 (millions, except percent and per share) Operating income Reported GAAP operating income $622.0 $555.3 Special (gains) and charges at public currency rates 57.7 34.3 Non-GAAP adjusted operating income 679.7 589.6 Effect of foreign currency translation (3.4) 26.6 Non-GAAP adjusted fixed currency operating income 676.3 616.2 Effect of acquisitions and divestitures (11.4) - Non-GAAP organic operating income $664.9 $616.2 Operating income margin Reported GAAP operating income margin 15.3 % 15.0 % Non-GAAP adjusted operating income margin 16.7 % 16.0 % Non-GAAP organic operating income margin 16.8 % 16.1 % Net Income attributable to Ecolab Reported GAAP net income attributable to Ecolab $432.6 $402.5 Special (gains) and charges, after tax 45.5 25.1 Discrete tax net expense (benefit) 4.4 (0.5) Non-GAAP adjusted net income attributable to Ecolab $482.5 $427.1 First Quarter Ended March 31 2026 2025

Non-GAAP financial measures 19 Diluted EPS attributable to Ecolab Reported GAAP diluted EPS $1.52 $1.41 Special (gains) and charges, after tax 0.16 0.09 Discrete tax net expense (benefit) 0.02 0.00 Non-GAAP adjusted diluted EPS $1.70 $1.50 Provision for Income Taxes Reported GAAP tax rate 21.8 % 20.3 % Special gains and charges (0.1) 0.4 Discrete tax items (0.7) 0.1 Non-GAAP adjusted tax rate 21.0 % 20.8 % 2026 2025 First Quarter Ended March 31

Non-GAAP financial measures 20 (millions) EBITDA (trailing twelve months ended) Net income including non-controlling interest $2,123.4 $2,121.8 Provision for income taxes 472.6 500.5 Interest expense, net 255.5 269.2 Depreciation 691.9 639.1 Amortization 311.5 297.6 EBITDA $3,854.9 $3,828.2 Special (gains) and charges impacting EBITDA 186.0 (179.1) Impact of Ovivo Electronics on EBITDA 0.5 - Adjusted EBITDA $4,041.4 $3,649.1 First Quarter Ended March 31 2026 2025

Non-GAAP financial measures 21 (millions) Fixed Currency Impact of Acquisitions and Divestitures Organic Fixed Currency Impact of Acquisitions and Divestitures Organic Net Sales Global Water $2,035.2 ($95.0) $1,940.2 $1,899.5 $ - $1,899.5 Global Institutional & Specialty 1,507.7 - 1,507.7 1,454.8 - 1,454.8 Global Pest Elimination 310.1 (1.6) 308.5 287.4 - 287.4 Global Life Sciences 200.9 - 200.9 181.4 - 181.4 Subtotal at fixed currency rates 4,053.9 (96.6) 3,957.3 3,823.1 - 3,823.1 Currency impact 12.2 (128.1) Consolidated reported GAAP net sales $4,066.1 $3,695.0 Operating Income (loss) Global Water $297.8 ($20.4) $277.4 $278.7 $ - $278.7 Global Institutional & Specialty 347.5 - 347.5 308.4 - 308.4 Global Pest Elimination 51.7 0.6 52.3 47.7 - 47.7 Global Life Sciences 37.5 - 37.5 31.0 - 31.0 Corporate (58.2) 8.4 (49.8) (49.6) - (49.6) Subtotal at fixed currency rates 676.3 (11.4) 664.9 616.2 - 616.2 Special (gains) and charges at fixed currency rates 56.6 33.9 Reported OI at fixed currency rates 619.7 582.3 Currency impact 2.3 (27.0) Consolidated reported GAAP operating income $622.0 $555.3 First Quarter Ended March 31 2026 2025

22 Non-GAAP Financial Information: This communication and certain of the accompanying tables include financial measures that have not been calculated in accordance with accounting principles generally accepted in the U.S. (“GAAP”). These non-GAAP financial measures may include: • fixed currency sales • organic sales • adjusted cost of sales • adjusted gross profit • adjusted gross margin • fixed currency operating income • fixed currency operating income margin • adjusted operating income • adjusted fixed currency operating income • adjusted fixed currency operating income margin • organic operating income • organic operating income margin • adjusted tax rate • adjusted net income attributable to Ecolab • adjusted diluted earnings per share • EBITDA • Adjusted EBITDA We provide these measures as additional information regarding our operating results. We use these non-GAAP measures internally to evaluate our performance and in making financial and operational decisions, including with respect to incentive compensation. We believe that our presentation of these measures provides investors with greater transparency with respect to our results of operations and that these measures are useful for period-to-period comparison of results. Non-GAAP financial information

23 Non-GAAP Financial Information (Continued): Our non-GAAP financial measures for adjusted cost of sales, adjusted gross margin, adjusted gross profit and adjusted operating income exclude the impact of special (gains) and charges and our non-GAAP financial measures for adjusted tax rate, adjusted net income attributable to Ecolab and adjusted diluted earnings per share further exclude the impact of discrete tax items. We include items within special (gains) and charges and discrete tax items that we believe can significantly affect the period-over-period assessment of operating results and not necessarily reflect costs and/or income associated with historical trends and future results. After tax special (gains) and charges are derived by applying the applicable local jurisdictional tax rate to the corresponding pre-tax special (gains) and charges. EBITDA is defined as net income including non-controlling interest with the sum of provision for income taxes, net interest expense, depreciation and amortization added back. Adjusted EBITDA further adds back special (gains) and charges impacting EBITDA. EBITDA and adjusted EBITDA are used in our net debt to EBITDA and net debt to adjusted EBITDA ratios, which we view as important indicators of the operational and financial health of our organization. We evaluate the performance of our international operations based on fixed currency rates of foreign exchange, which eliminate the translation impact of exchange rate fluctuations on our international results. Fixed currency amounts included in this presentation are based on translation into U.S. dollars at the fixed foreign currency exchange rates established by management at the beginning of 2026. We also provide our segment results based on public currency rates for informational purposes. Our reportable segments do not include the impact of intangible asset amortization from the Nalco, Purolite and Ovivo Electronics transactions or the impact of special (gains) and charges as these are not allocated to the Company’s reportable segments. Our non-GAAP financial measures for organic sales, organic operating income and organic operating income margin are at fixed currency and exclude the impact of special (gains) and charges where applicable, the results of our acquired businesses from the first twelve months post acquisition and the results of divested businesses from the twelve months prior to divestiture. These non-GAAP financial measures are not in accordance with, or an alternative to, GAAP and may be different from non-GAAP measures used by other companies. Investors should not rely on any single financial measure when evaluating our business. We recommend that investors view these measures in conjunction with the GAAP measures included in this presentation. Reconciliations of our non-GAAP measures are included in the following “Non-GAAP Financial Measures” tables of this communication. We do not provide reconciliations for non-GAAP estimates on a forward-looking basis (including those contained in this presentation) when we are unable to provide a meaningful or accurate calculation or estimation of reconciling items and the information is not available without unreasonable effort. This is due to the inherent difficulty of forecasting the timing and amount of various items that have not yet occurred, are out of our control and/or cannot be reasonably predicted, and that would impact reported earnings per share and the reported tax rate, the most directly comparable forward-looking GAAP financial measures to adjusted earnings per share and the adjusted tax rate. For the same reasons, we are unable to address the probable significance of the unavailable information. Non-GAAP financial information (cont.)

FAQ

How did Ecolab (ECL) perform financially in Q1 2026?

Ecolab delivered solid Q1 2026 growth, with net sales rising 10% to $4,066.1 million. Reported diluted EPS increased 8% to $1.52, while adjusted diluted EPS climbed 13% to $1.70, reflecting strong pricing, volume gains and improved productivity across key segments.

What earnings guidance did Ecolab (ECL) give for full year 2026?

Ecolab reaffirmed its 2026 adjusted diluted EPS outlook of $8.43 to $8.63. This range implies 12% to 15% growth over adjusted diluted EPS of $7.53 in 2025, excluding the impact of the pending CoolIT Systems acquisition and expected special charges of $0.60–$0.65 per share.

What is Ecolab’s (ECL) outlook for Q2 2026 earnings?

For Q2 2026, Ecolab expects adjusted diluted EPS of $2.02 to $2.12. This represents anticipated growth of 7% to 12% compared with adjusted diluted EPS of $1.89 a year earlier, during a transition period as an energy surcharge ramps to offset higher commodity costs.

How did Ecolab’s key segments perform in Q1 2026?

Ecolab’s segments showed broad strength. Global Water fixed‑currency sales grew 7%, Institutional & Specialty 4%, Pest Elimination 8%, and Life Sciences 11%. Life Sciences’ fixed‑currency operating income increased 21%, while Institutional & Specialty posted a 13% operating income gain.

What were Ecolab’s Q1 2026 organic sales and operating income trends?

Organic net sales increased 4% to $3,957.3 million, and organic operating income rose 8% to $664.9 million. The organic operating income margin improved to 16.8% from 16.1%, as higher pricing, better productivity and growth investments outweighed elevated commodity costs.

How are rising energy and commodity costs affecting Ecolab (ECL)?

Ecolab noted sharply rising global energy costs are driving higher commodity costs, expected to increase by high‑single digits starting in Q2 2026. The company has implemented a global energy surcharge and expects accelerating pricing to offset the dollar impact and stabilize gross margin in the second half.

What growth drivers is Ecolab (ECL) highlighting for the future?

Ecolab emphasizes its growth engines: Global High-Tech, Life Sciences, Pest Elimination and Ecolab Digital. For example, Ecolab Digital sales increased 24% to $99 million in Q1 2026, and Global High-Tech delivered more than 20% organic growth, supporting its long‑term high‑growth, high‑margin strategy.

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