Form 8-K

8-K — PENTAIR plc

Accession: 0000077360-26-000023

Filed: 2026-04-28

Period: 2026-04-28

CIK: 0000077360

SIC: 3550 (SPECIAL INDUSTRY MACHINERY (NO METALWORKING MACHINERY))

Item: Results of Operations and Financial Condition

Item: Financial Statements and Exhibits

Documents

8-K — pnr-20260428.htm (Primary)

EX-99.1 (q12026pressrelease.htm)

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GRAPHIC (pnr-20260428_g1.jpg)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K

8-K (Primary)

Filename: pnr-20260428.htm · Sequence: 1

pnr-20260428

0000077360false00000773602026-04-282026-04-28

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

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

Pentair plc

(Exact name of registrant as specified in its charter)

Ireland 001-11625 98-1141328

(State or other jurisdiction of

incorporation or organization) (Commission

File No.) (I.R.S. Employer

Identification No.)

Regal House, 70 London Road, Twickenham, London, TW13QS United Kingdom

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: 44-74-9421-6154

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:

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

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

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

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

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

Title of each class Trading Symbol(s) Name of each exchange on which registered

Ordinary Shares, nominal value $0.01 per share PNR New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act (17 CFR 230.405) or Rule 12b-2 of the Exchange Act (17 CFR 240.12b-2). ☐ Emerging growth company

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

ITEM 2.02 Results of Operations and Financial Condition

On April 28, 2026, Pentair plc (the “Company”) issued a press release announcing its earnings for the first quarter of 2026 and a conference call in connection therewith. A copy of the release is attached hereto as Exhibit 99.1 and incorporated herein by reference.

This press release refers to certain non-generally accepted accounting principles (“GAAP”) financial measures (core sales, adjusted operating income, adjusted return on sales, adjusted net income from continuing operations, adjusted diluted earnings per share from continuing operations and free cash flow) and a reconciliation of those non-GAAP financial measures to the corresponding financial measures contained in the Company’s financial statements prepared in accordance with GAAP.

The 2026 adjusted operating income, adjusted return on sales, adjusted net income from continuing operations and adjusted diluted earnings per share from continuing operations (“EPS”) include equity income of unconsolidated subsidiaries and eliminate intangible amortization, costs of certain restructuring, transformation and other activities and certain tax items. The 2025 adjusted operating income, adjusted return on sales, adjusted net income from continuing operations and adjusted diluted EPS include equity income of unconsolidated subsidiaries and eliminate intangible amortization, costs of certain restructuring, transformation and other activities, certain legal accrual adjustments and settlements, asset impairment and write-offs, loss on sale of business, deal-related costs and expenses, pension and other post-retirement mark-to-market loss and certain tax items.

We use the term “core sales” to refer to GAAP net sales from continuing operations excluding (1) the impact of currency translation and (2) the impact of net sales from acquired businesses recorded prior to the first anniversary of the acquisition, excluding the excess over prior year net sales of the acquired business less the net sales attributable to discontinued or divested businesses/product lines not considered discontinued operations (“acquisition sales”). The portion of GAAP net sales attributable to currency translation is calculated as the difference between (a) the period-to-period change in net sales (excluding acquisition sales) and (b) the period-to-period change in net sales (excluding acquisition sales) after applying current period foreign exchange rates to the prior year period. We use the term “core sales growth” to refer to the measure of comparing current period core net sales with the corresponding period of the prior year.

Management utilizes these adjusted financial measures to assess the run-rate of its continuing operations against those of prior periods without the distortion of these factors. The Company believes that these non-GAAP financial measures will be useful to investors as well to assess the continuing strength of the Company’s underlying operations. In addition, adjusted EPS is used as a criterion to measure and pay long-term incentive compensation and adjusted operating income is used as a criterion to measure and pay annual incentive compensation. These non-GAAP measures may not be comparable to similarly titled measures reported by other companies.

The Company uses free cash flow to assess its cash flow performance. The Company believes free cash flow is an important measure of liquidity because it provides the Company and its investors a measurement of cash generated from operations that is available to pay dividends, repurchase shares and repay debt. In addition, free cash flow is used as a criterion to measure and pay annual incentive compensation. The Company’s measure of free cash flow may not be comparable to similarly titled measures reported by other companies.

ITEM 9.01 Financial Statements and Exhibits

(a)Financial Statements of Businesses Acquired

Not applicable.

(b)Pro Forma Financial Information

Not applicable.

(c)Shell Company Transactions

Not applicable.

(d)Exhibits

EXHIBIT INDEX

Exhibit Description

99.1

Pentair plc press release dated April 28, 2026 announcing earnings for the first quarter of 2026

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

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, on April 28, 2026.

PENTAIR PLC

Registrant

/s/ Nicholas J. Brazis

Nicholas J. Brazis

Executive Vice President and Chief Financial Officer

/s/ Jennifer M. Hensley

Jennifer M. Hensley

Senior Vice President, Chief Accounting Officer and Controller

EX-99.1

Filename: q12026pressrelease.htm · Sequence: 2

Document

Exhibit 99.1

News Release

Pentair Reports Strong First Quarter 2026 Results

•Sales of $1,037 million, up 3 percent compared to sales for the same period last year

•Operating income was $210 million with ROS of 20.3 percent, an increase of 20 basis points compared to the prior year period; on an adjusted basis, ROS expanded 100 basis points to 25.0 percent

•GAAP EPS increased 5 percent to $0.98 when compared to the prior year period and adjusted EPS rose 10 percent to $1.22

•Repurchased $200 million of ordinary shares

•The company updated its full year 2026 GAAP EPS guidance to approximately $4.83 to $4.93, up 23 percent to 25 percent versus the prior year, and updated EPS guidance on an adjusted basis to approximately $5.30 to $5.40, up 8 percent to 10 percent versus the prior year

Reconciliations of GAAP to Non-GAAP measures are in the attached financial tables.

LONDON, United Kingdom — April 28, 2026 — Pentair plc (NYSE: PNR), a leader in helping the world sustainably move, improve and enjoy water, life’s most essential resource, today announced first quarter 2026 sales of $1,037 million. Sales were up 3 percent compared to sales for the same period last year. Excluding currency translation, acquisitions and divestitures, core sales grew 1 percent in the first quarter. First quarter 2026 earnings per diluted share from continuing operations (“EPS”) were $0.98 compared to $0.93 in the first quarter of 2025, a 5 percent increase. On an adjusted basis, the Company reported first quarter 2026 EPS of $1.22 compared to $1.11 in the first quarter of 2025, reflecting a 10 percent increase. Adjusted operating income, reportable segment income, adjusted net income, free cash flow and adjusted EPS are described in the attached schedules.

John L. Stauch, Pentair’s President and Chief Executive Officer commented, “Continued execution across our Move, Improve and Enjoy Water portfolio led by our Pentair Business System initiatives drove another quarter of sales and earnings growth, and delivered strong productivity and margin expansion. At our recent Investor Day in March, we provided our target long-term growth algorithm detailing our organic growth strategy and continued margin expansion opportunity over the next three years. We believe we have structurally changed our business model into a resilient and balanced water portfolio to drive durable earnings growth long term and mitigate the impacts of economic cyclicality. Our strategy has guided us to deliver breakthrough innovation, invest in organic growth, drive strong financial performance and return capital to shareholders. With a solid balance sheet, strong cash flow, a balanced capital deployment strategy and a resilient water portfolio, we remain focused on delivering long-term shareholder value.”

First quarter 2026 operating income was $210 million, up 3 percent compared to operating income for the first quarter of 2025, and return on sales (“ROS”) was 20.3 percent, an increase of 20 basis points when compared to the first quarter of 2025. On an adjusted basis, the Company had adjusted operating income of $259 million for the first quarter of 2026, up 7 percent compared to adjusted operating income for the first quarter of 2025, and ROS was 25.0 percent, an increase of 100 basis points when compared to the first quarter of 2025.

Flow sales were up 11 percent compared to sales for the same period last year. Excluding currency translation, acquisitions and divestitures, core sales grew 2 percent in the first quarter. Reportable segment income of $61 million was up 22 percent compared to the first quarter of 2025, and ROS was 23.7 percent, an increase of 210 basis points when compared to the first quarter of 2025.

Water Solutions sales were down 1 percent compared to sales for the same period last year. Excluding currency translation, acquisitions and divestitures, core sales grew 1 percent in the first quarter. Reportable segment income of $100 million was up 6 percent compared to the first quarter of 2025, and ROS was 25.5 percent, an increase of 160 basis points when compared to the first quarter of 2025.

Pool sales were up 1 percent compared to sales for the same period last year. Excluding currency translation, acquisitions and divestitures, core sales grew 1 percent in the first quarter. Reportable segment income of $128 million was up 2 percent

(more)

compared to the first quarter of 2025, and ROS was 33.1 percent, an increase of 30 basis points when compared to the first quarter of 2025.

Net cash used for operating activities was $67 million for the quarter compared to $39 million in the first quarter of 2025. Free cash flow used for the quarter was $86 million compared to $56 million in the first quarter of 2025.

SHAREHOLDER RETURNS

Pentair paid a regular cash dividend of $0.27 per share in the first quarter of 2026. In addition, Pentair previously announced on February 23, 2026 that it will pay a regular quarterly cash dividend of $0.27 per share on May 1, 2026 to shareholders of record at the close of business on April 17, 2026. This year marks the 50th consecutive year that Pentair has increased its dividend.

During the first quarter, the Company repurchased 2.0 million shares for $200 million. As of March 31, 2026, we had $800.0 million available for share repurchases under our share repurchase authorization.

OUTLOOK

Mr. Stauch concluded, “Our full year outlook reflects a strong first quarter and cautious optimism as we head into our most important quarter seasonally. Our sales growth forecast assumes limited to no U.S. residential recovery and continued expansion across our commercial, industrial and municipal verticals. We feel confident that we expect to control what we can and continue to mitigate risk. We also introduced second quarter guidance reflecting sales growth, margin expansion and EPS growth. As a leader in helping the world move, improve and enjoy water, life’s most essential resource, we are well positioned to capture opportunities from favorable secular trends in water and we continue to invest to drive long-term sales and earnings growth.”

The Company updated its estimated 2026 GAAP EPS from continuing operations to approximately $4.83 to $4.93, up 23 percent to 25 percent versus the prior year, and updated estimated EPS on an adjusted basis to approximately $5.30 to $5.40, up 8 percent to 10 percent versus the prior year. The Company updated its estimated full year 2026 sales to be up approximately 2 to 4 percent on a reported basis.

In addition, the Company introduces estimated second quarter 2026 GAAP EPS from continuing operations guidance of approximately $1.39 to $1.42, up approximately 54 percent to 58 percent compared to the prior year period, and adjusted EPS of approximately $1.47 to $1.50, up approximately 6 percent to 8 percent compared to the prior year period. The Company expects second quarter sales to be up approximately 1 percent on a reported basis compared to the second quarter of 2025.

(more)

EARNINGS CONFERENCE CALL

Pentair President and Chief Executive Officer John L. Stauch and Chief Financial Officer Nicholas J. Brazis will discuss the Company’s first quarter 2026 results on a conference call with investors at 9:00 a.m. Eastern today. A live audio webcast of the call, along with the related presentation, can be accessed in the Investor Relations section of the Company’s website, www.pentair.com, shortly before the call begins.

Reconciliations of non-GAAP financial measures are set forth in the attachments to this release and in the presentations, each of which can be found on Pentair’s website. The webcast and presentations will be archived at the Company’s website following the conclusion of the event.

SEGMENT REORGANIZATION

Effective January 1, 2026, we reorganized the composition of our Flow and Water Solutions reportable segments to reflect how we are managing our business. As a result of this reorganization, our legacy residential and irrigation flow business moved from our Flow segment into our Water Solutions segment. The Pool segment remains unchanged. The applicable prior period amounts related to this change have been retrospectively reclassified to conform to the new composition. These changes have no impact on the Company’s historical consolidated financial performance or results of operations.

CAUTION CONCERNING FORWARD-LOOKING STATEMENTS

This release contains statements that we believe to be “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical fact, are forward-looking statements. Without limitation, any statements preceded or followed by or that include the words “targets,” “plans,” “believes,” “expects,” “intends,” “will,” “likely,” “may,” “anticipates,” “estimates,” “projects,” “should,” “would,” “could,” “positioned,” “strategy,” or “future” or words, phrases, or terms of similar substance or the negative thereof are forward-looking statements. These forward-looking statements are not guarantees of future performance and are subject to risks, uncertainties, assumptions and other factors, some of which are beyond our control, which could cause actual results to differ materially from those expressed or implied by such forward-looking statements. These factors include the overall global economic and business conditions impacting our business, including the strength of housing and related markets and conditions relating to international hostilities; supply, demand, logistics, competition and pricing pressures related to and in the markets we serve; the ability to achieve the benefits of our restructuring plans, cost reduction initiatives and Transformation Program; the impact of raw material, logistics and labor costs and other inflation; volatility in currency exchange rates and interest rates; failure of markets to accept new product introductions and enhancements; the ability to successfully identify, finance, complete and integrate acquisitions; risks associated with operating foreign businesses; the impact of seasonality of sales and weather conditions; our ability to comply with laws and regulations; the impact of changes in laws, regulations and administrative policy, including those that limit U.S. tax benefits or impact trade agreements and tariffs; the outcome of litigation and governmental proceedings; and the ability to achieve our long-term strategic operating and sustainability goals and targets. Additional information concerning these and other factors is contained in our filings with the U.S. Securities and Exchange Commission, including our Annual Report on Form 10-K for the year ended December 31, 2025. All forward-looking statements, including all financial forecasts, speak only as of the date of this release. Pentair assumes no obligation, and disclaims any obligation, to update the information contained in this release.

ABOUT PENTAIR PLC

At Pentair, we help the world sustainably move, improve and enjoy water, life’s most essential resource. From our residential and commercial water solutions, to industrial water management and everything in between, Pentair is a core large cap value S&P 500 equity stock focused on smart, sustainable water solutions that help our planet and people thrive.

Pentair had revenue in 2025 of approximately $4.2 billion, and trades under the ticker symbol PNR. With approximately 9,000 global employees serving customers in more than 150 countries, we work to help improve lives and the environment around the world. To learn more, visit www.pentair.com.

PENTAIR CONTACTS

Shelly Hubbard Rebecca Osborn

Vice President, Investor Relations

Vice President, Communications

Direct: 763-656-5575

Direct: 763-656-5589

Email: shelly.hubbard@pentair.com

Email: rebecca.osborn@pentair.com

(more)

Pentair plc and Subsidiaries

Condensed Consolidated Statements of Operations (Unaudited)

Three months ended

In millions, except per-share data March 31,

2026 March 31,

2025

Net sales $ 1,036.7 $ 1,010.4

Cost of goods sold 603.3 607.1

Gross profit 433.4 403.3

% of net sales 41.8 % 39.9 %

Selling, general and administrative

198.9 176.6

% of net sales 19.2 % 17.5 %

Research and development

24.5 23.6

% of net sales 2.4 % 2.3 %

Operating income 210.0 203.1

% of net sales 20.3 % 20.1 %

Other expense

0.5 0.5

Net interest expense 20.1 19.7

% of net sales 1.9 % 1.9 %

Income from continuing operations before income taxes 189.4 182.9

Provision for income taxes 28.6 28.0

Effective tax rate 15.1 % 15.3 %

Net income from continuing operations 160.8 154.9

Income from discontinued operations, net of tax

11.6 —

Net income $ 172.4 $ 154.9

Earnings per ordinary share

Basic

Continuing operations $ 0.99 $ 0.94

Discontinued operations 0.07 —

Basic earnings per ordinary share $ 1.06 $ 0.94

Diluted

Continuing operations $ 0.98 $ 0.93

Discontinued operations 0.07 —

Diluted earnings per ordinary share $ 1.05 $ 0.93

Weighted average ordinary shares outstanding

Basic 162.5 164.9

Diluted 163.7 166.3

Cash dividends paid per ordinary share $ 0.27 $ 0.25

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Pentair plc and Subsidiaries

Condensed Consolidated Balance Sheets (Unaudited)

March 31,

2026 December 31,

2025

In millions

Assets

Current assets

Cash and cash equivalents $ 67.7 $ 101.6

Accounts receivable, net 913.7 673.2

Inventories 642.0 632.6

Other current assets 139.6 134.4

Total current assets 1,763.0 1,541.8

Property, plant and equipment, net 377.1 376.8

Other assets

Goodwill 3,524.7 3,538.1

Intangibles, net 1,056.1 1,073.3

Other non-current assets 351.1 338.8

Total other assets 4,931.9 4,950.2

Total assets $ 7,072.0 $ 6,868.8

Liabilities and Equity

Current liabilities

Accounts payable $ 332.5 $ 301.5

Employee compensation and benefits 94.5 120.1

Other current liabilities 512.5 537.7

Total current liabilities 939.5 959.3

Other liabilities

Long-term debt 1,944.3 1,638.6

Pension and other post-retirement compensation and benefits 58.2 58.8

Deferred tax liabilities 45.7 47.5

Other non-current liabilities 274.2 295.4

Total liabilities 3,261.9 2,999.6

Equity 3,810.1 3,869.2

Total liabilities and equity $ 7,072.0 $ 6,868.8

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Pentair plc and Subsidiaries

Condensed Consolidated Statements of Cash Flows (Unaudited)

Three months ended

In millions March 31,

2026 March 31,

2025

Operating activities

Net income $ 172.4 $ 154.9

Income from discontinued operations, net of tax

(11.6) —

Adjustments to reconcile net income from continuing operations to net cash provided by (used for) operating activities of continuing operations

Equity income of unconsolidated subsidiaries (0.5) (0.4)

Depreciation 14.6 14.8

Amortization 15.7 14.2

Deferred income taxes 1.8 11.5

Share-based compensation 15.7 12.6

Asset impairment and write-offs — 5.2

Changes in assets and liabilities, net of effects of business acquisitions

Accounts receivable (243.0) (261.6)

Inventories (11.5) (3.5)

Other current assets (6.6) (12.5)

Accounts payable 33.5 23.8

Employee compensation and benefits (24.5) (24.3)

Other current liabilities (23.7) 22.6

Other non-current assets and liabilities 0.3 3.8

Net cash used for operating activities (67.4) (38.9)

Investing activities

Capital expenditures (18.5) (16.8)

Proceeds from sale of property and equipment 0.2 —

Net cash used for investing activities (18.3) (16.8)

Financing activities

Net repayments of short-term borrowings

— (9.3)

Net borrowings of revolving long-term debt

304.9 196.2

Shares issued to employees, net of shares withheld (10.2) (8.6)

Repurchases of ordinary shares (200.0) (50.0)

Dividends paid (44.1) (41.2)

Net cash provided by financing activities

50.6 87.1

Effect of exchange rate changes on cash and cash equivalents 1.2 (9.5)

Change in cash and cash equivalents (33.9) 21.9

Cash and cash equivalents, beginning of period 101.6 118.7

Cash and cash equivalents, end of period $ 67.7 $ 140.6

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Pentair plc and Subsidiaries

Reconciliation of the GAAP Operating Activities Cash Flow to the Non-GAAP Free Cash Flow (Unaudited)

Three months ended

In millions March 31,

2026 March 31,

2025

Net cash used for operating activities

$ (67.4) $ (38.9)

Capital expenditures (18.5) (16.8)

Proceeds from sale of property and equipment 0.2 —

Free cash flow $ (85.7) $ (55.7)

(more)

Pentair plc and Subsidiaries

Supplemental Financial Information by Reportable Segment (Unaudited)

2026 2025

In millions First

Quarter First

Quarter

Net sales

Flow $ 258.1 $ 232.6

Water Solutions 391.0 393.5

Pool 387.1 383.9

Reportable segment net sales

1,036.2 1,010.0

Corporate and other

0.5 0.4

Net sales

$ 1,036.7 $ 1,010.4

Reportable segment income (loss)

Flow $ 61.2 $ 50.2

Water Solutions 99.9 94.1

Pool 128.1 126.0

Reportable segment income

289.2 270.3

Corporate and other

(30.1) (27.8)

Adjusted operating income

$ 259.1 $ 242.5

Return on sales

Flow 23.7 % 21.6 %

Water Solutions 25.5 % 23.9 %

Pool 33.1 % 32.8 %

Adjusted return on sales

25.0 % 24.0 %

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Pentair plc and Subsidiaries

Reconciliation of GAAP to Non-GAAP Financial Measures for the Year Ending December 31, 2026

Excluding the Effect of Adjustments (Unaudited)

Actual Forecast

In millions, except per-share data First

Quarter

Second

Quarter

Full

Year

Net sales $ 1,036.7 approx Up 1% approx Up 2% - 4%

Operating income 210.0 approx Up 36% - 37% approx Up 19% - 21%

Return on sales 20.3 %

Adjustments:

Restructuring and other 21.4 approx $ — approx $ 21

Transformation costs 11.5 approx — approx 12

Intangible amortization 15.7 approx 15 approx 62

Equity income of unconsolidated subsidiaries 0.5 approx 1 approx 3

Adjusted operating income

259.1 approx Up 5% - 6% approx Up 6% - 8%

Adjusted return on sales 25.0 %

Net income from continuing operations—as reported 160.8 approx $227 - $232 approx $787 - $803

Adjustments to operating income 48.6 approx 15 approx 95

Income tax adjustments (10.4) approx (2) approx (18)

Net income from continuing operations—as adjusted $ 199.0 approx $240 - $245 approx $864 - $880

Continuing earnings per ordinary share—diluted

Diluted earnings per ordinary share—as reported $ 0.98 approx $1.39 - $1.42 approx $4.83 - $4.93

Adjustments 0.24 approx 0.08 approx 0.47

Diluted earnings per ordinary share—as adjusted $ 1.22 approx $1.47 - $1.50 approx $5.30 - $5.40

(more)

Pentair plc and Subsidiaries

Reconciliation of GAAP to Non-GAAP Financial Measures for the Year Ending December 31, 2025

Excluding the Effect of Adjustments (Unaudited)

In millions, except per-share data First

Quarter

Second

Quarter

Third

Quarter

Fourth

Quarter

Full

Year

Net sales $ 1,010.4 $ 1,123.1 $ 1,022.0 $ 1,020.5 $ 4,176.0

Operating income 203.1 217.7 231.7 205.0 857.5

Return on sales 20.1 % 19.4 % 22.7 % 20.1 % 20.5 %

Adjustments:

Restructuring and other 10.5 10.4 0.2 10.2 31.3

Transformation costs 9.1 12.5 10.8 8.4 40.8

Intangible amortization 14.2 14.3 13.9 15.7 58.1

Legal accrual adjustments and settlements — — — 11.6 11.6

Asset impairment and write-offs 5.2 41.8 1.5 0.6 49.1

Deal-related costs and expenses — — 4.1 — 4.1

Equity income of unconsolidated subsidiaries 0.4 — 0.4 0.2 1.0

Adjusted operating income

242.5 296.7 262.6 251.7 1,053.5

Adjusted return on sales 24.0 % 26.4 % 25.7 % 24.7 % 25.2 %

Net income from continuing operations—as reported 154.9 148.5 184.3 161.8 649.5

Loss on sale of business

— 26.3 — — 26.3

Pension and other post retirement mark-to-market loss

— — — 2.4 2.4

Adjustments to operating income 39.0 79.0 30.5 46.5 195.0

Income tax adjustments (9.7) (23.3) (9.5) (16.0) (58.5)

Net income from continuing operations—as adjusted $ 184.2 $ 230.5 $ 205.3 $ 194.7 $ 814.7

Continuing earnings per ordinary share—diluted

Diluted earnings per ordinary share—as reported $ 0.93 $ 0.90 $ 1.12 $ 0.98 $ 3.93

Adjustments 0.18 0.49 0.12 0.20 0.99

Diluted earnings per ordinary share—as adjusted $ 1.11 $ 1.39 $ 1.24 $ 1.18 $ 4.92

(more)

Pentair plc and Subsidiaries

Reconciliation of Net Sales Growth to Core Net Sales Growth by Reportable Segment

For the Quarter Ended March 31, 2026 (Unaudited)

Q1 Net Sales Growth

Core Currency Acq. / Div. Total

Total Pentair 1.1 % 2.1 % (0.6) % 2.6 %

Flow 2.5 % 4.2 % 4.3 % 11.0 %

Water Solutions 0.9 % 2.5 % (4.0) % (0.6) %

Pool 0.5 % 0.3 % — % 0.8 %

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For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

+ References

No definition available.

+ Details

Name:

dei_DocumentPeriodEndDate

Namespace Prefix:

dei_

Data Type:

xbrli:dateItemType

Balance Type:

Period Type:

duration

- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

Name:

dei_DocumentType

Namespace Prefix:

dei_

Data Type:

dei:submissionTypeItemType

Balance Type:

Period Type:

duration

- Definition

Address Line 1 such as Attn, Building Name, Street Name

+ References

No definition available.

+ Details

Name:

dei_EntityAddressAddressLine1

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Address Line 2 such as Street or Suite number

+ References

No definition available.

+ Details

Name:

dei_EntityAddressAddressLine2

Namespace Prefix:

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Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

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- Definition

Name of the City or Town

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No definition available.

+ Details

Name:

dei_EntityAddressCityOrTown

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

ISO 3166-1 alpha-2 country code.

+ References

No definition available.

+ Details

Name:

dei_EntityAddressCountry

Namespace Prefix:

dei_

Data Type:

dei:countryCodeItemType

Balance Type:

Period Type:

duration

- Definition

Code for the postal or zip code

+ References

No definition available.

+ Details

Name:

dei_EntityAddressPostalZipCode

Namespace Prefix:

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Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityCentralIndexKey

Namespace Prefix:

dei_

Data Type:

dei:centralIndexKeyItemType

Balance Type:

Period Type:

duration

- Definition

Indicate if registrant meets the emerging growth company criteria.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityEmergingGrowthCompany

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

+ References

No definition available.

+ Details

Name:

dei_EntityFileNumber

Namespace Prefix:

dei_

Data Type:

dei:fileNumberItemType

Balance Type:

Period Type:

duration

- Definition

Two-character EDGAR code representing the state or country of incorporation.

+ References

No definition available.

+ Details

Name:

dei_EntityIncorporationStateCountryCode

Namespace Prefix:

dei_

Data Type:

dei:edgarStateCountryItemType

Balance Type:

Period Type:

duration

- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityRegistrantName

Namespace Prefix:

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Data Type:

xbrli:normalizedStringItemType

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- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityTaxIdentificationNumber

Namespace Prefix:

dei_

Data Type:

dei:employerIdItemType

Balance Type:

Period Type:

duration

- Definition

Local phone number for entity.

+ References

No definition available.

+ Details

Name:

dei_LocalPhoneNumber

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

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Name:

dei_PreCommencementIssuerTenderOffer

Namespace Prefix:

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Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

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Name:

dei_PreCommencementTenderOffer

Namespace Prefix:

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Data Type:

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Balance Type:

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- Definition

Title of a 12(b) registered security.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

+ Details

Name:

dei_Security12bTitle

Namespace Prefix:

dei_

Data Type:

dei:securityTitleItemType

Balance Type:

Period Type:

duration

- Definition

Name of the Exchange on which a security is registered.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

+ Details

Name:

dei_SecurityExchangeName

Namespace Prefix:

dei_

Data Type:

dei:edgarExchangeCodeItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

+ Details

Name:

dei_SolicitingMaterial

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Trading symbol of an instrument as listed on an exchange.

+ References

No definition available.

+ Details

Name:

dei_TradingSymbol

Namespace Prefix:

dei_

Data Type:

dei:tradingSymbolItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

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