Form 8-K

8-K — Core & Main, Inc.

Accession: 0001856525-26-000091

Filed: 2026-09-09

Period: 2026-09-09

CIK: 0001856525

SIC: 5099 (WHOLESALE-DURABLE GOODS, NEC)

Item: Results of Operations and Financial Condition

Item: Financial Statements and Exhibits

Documents

8-K — cnm-20260909.htm (Primary)

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8-K

8-K (Primary)

Filename: cnm-20260909.htm · Sequence: 1

cnm-20260909

0001856525false00018565252026-09-092026-09-09

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

___________________________

FORM 8-K

___________________________

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): September 9, 2026

___________________________

Core & Main, Inc.

(Exact name of registrant as specified in its charter)

___________________________

Delaware

001-40650

86-3149194

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(IRS Employer

Identification No.)

1830 Craig Park Court

St. Louis, Missouri

63146

(Address of principal executive offices)

(Zip Code)

(314) 432-4700

(Registrant’s telephone number, including area code)

N/A

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

___________________________

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ 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 Class

Trading Symbol

Name of Each Exchange

on Which Registered

Class A common stock, par value $0.01 per share

CNM

New York Stock Exchange

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

Emerging growth company ☐

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

Item 2.02. Results of Operations and Financial Conditions

On September 9, 2026, Core & Main, Inc. (“Core & Main” or the "Company") issued a press release announcing its results of operations for the fiscal second quarter ended August 2, 2026. A copy of the press release is attached hereto as Exhibit 99.1.

On September 9, 2026, Core & Main posted to the “Investor Relations” section of its website the presentation that accompanied the earnings conference call. A copy of the investor presentation is attached hereto as Exhibit 99.2.

The information provided pursuant to this Item 2.02 and in Exhibit 99.1 and Exhibit 99.2 is being “furnished” herewith and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing made by Core & Main under the Exchange Act or the Securities Act of 1933, as amended, regardless of any general incorporation language in such filings, except as shall be expressly set forth by specific reference in any such filings.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits

Exhibit No.

Description

99.1

Earnings release dated September 9, 2026 - Core & Main Announces Fiscal 2026 Second Quarter Results**

99.2

Investor presentation dated September 9, 2026**

104

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

* Filed herewith.

** Furnished herewith.

SIGNATURES

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.

Core & Main, Inc.

By:

/s/ Jackie M. Burkhardt

Name:

Jackie M. Burkhardt

Title:

General Counsel, Chief Compliance Officer and Secretary

Date: September 9, 2026

EX-99.1

Filename: cnmq22026earningspressrele.htm · Sequence: 2

Document

News Release

FOR IMMEDIATE RELEASE

Core & Main Announces Fiscal 2026 Second Quarter Results

Delivers Net Sales and Adjusted EBITDA Growth, Continues Record Share Repurchases, and

Reaffirms Full-Year Outlook

ST. LOUIS, Sept. 9, 2026—Core & Main, Inc. (NYSE: CNM) ("Core & Main"), a leading specialty distributor dedicated to advancing reliable infrastructure with local service, nationwide, today announced financial results for the second quarter ended August 2, 2026.

Fiscal 2026 Second Quarter Results (Compared with Fiscal 2025 Second Quarter)

•Net sales increased 2.5% to $2,145 million

•Gross profit increased 2.3% to $573 million; gross profit margin of 26.7%

•Net income increased 6.4% to $150 million

•Adjusted EBITDA (Non-GAAP) increased 3.0% to $274 million; Adjusted EBITDA margin (Non-GAAP) of 12.8%

•Diluted earnings per share increased 10.0% to $0.77

•Adjusted Diluted Earnings Per Share (Non-GAAP) increased 8.0% to $0.94

•Net cash provided by operating activities of $62 million

•Deployed $169 million to repurchase 3.7 million shares during the quarter and an

additional $11 million to repurchase 0.3 million shares subsequent to quarter end, bringing year-to-date open market share repurchases to nearly $270 million and 5.7 million shares

•Opened seven greenfield locations in fiscal 2026, including two during and after the quarter

•Reaffirms full-year fiscal 2026 outlook

"We delivered growth across sales, adjusted EBITDA and earnings per share during the second quarter, while momentum continues to build across the business" said Mark Witkowski, Chief Executive Officer of Core & Main. "Municipal demand remained a source of strength. Fire protection and large capital projects, including treatment plants and data centers, delivered strong growth and we are encouraged by the opportunities emerging across our acquisition pipeline. These trends support our confidence in the second half and reaffirmed full-year outlook.

We also deployed significant levels of capital, executing our second consecutive quarter of record open market share repurchases while investing in future growth through acquisitions, greenfield expansions and other strategic initiatives. With a strong balance sheet and substantial liquidity, we remain well positioned to fund potential additional share repurchases and pursue attractive acquisition opportunities.

cont.

The quarter highlights the durability of the Core & Main business model: growing revenue, generating strong cash flow, investing for the future and strengthening our market position while operating in a mixed demand environment. With a robust acquisition pipeline and multiple avenues for growth, we remain confident in our ability to create long-term value for our customers, associates and shareholders."

Three Months Ended August 2, 2026

Net sales for the three months ended August 2, 2026 increased $52 million, or 2.5% to $2,145 million compared with $2,093 million for the three months ended August 3, 2025. Net sales increased with contributions across volume, price and acquisitions. Net sales for pipes, valves & fittings increased due to acquisitions. Net sales for storm drainage was essentially flat. Net sales of fire protection products increased due to higher volumes and higher selling prices. Net sales of smart utility products increased primarily due to higher selling prices.

Gross profit for the three months ended August 2, 2026 increased $13 million, or 2.3%, to $573 million compared with $560 million for the three months ended August 3, 2025. Gross profit as a percentage of net sales for the three months ended August 2, 2026 was 26.7% compared with 26.8% for the three months ended August 3, 2025.

Selling, general and administrative ("SG&A") expenses for the three months ended August 2, 2026 decreased $1 million, or 0.3%, to $301 million compared with $302 million during the three months ended August 3, 2025. SG&A expenses as a percentage of net sales were 14.0% for the three months ended August 2, 2026 compared with 14.4% for the three months ended August 3, 2025. The improvement was primarily attributable to the benefits of recent cost actions and lower variable compensation costs partially offset by higher distribution costs and investments to support long-term growth, including greenfield expansion and sales initiatives.

Operating income for the three months ended August 2, 2026 increased $14 million, or 6.6%, to $227 million compared with $213 million during the three months ended August 3, 2025. The increase in operating income was primarily attributable to higher gross profit.

Net income for the three months ended August 2, 2026 increased $9 million, or 6.4%, to $150 million compared with $141 million for the three months ended August 3, 2025. The increase in net income was primarily attributable to an increase in operating income partially offset by higher income tax expense.

The Class A common stock basic earnings per share for the three months ended August 2, 2026 increased 8.5% to $0.77 compared with $0.71 for the three months ended August 3, 2025. The Class A common stock diluted earnings per share for the three months ended August 2, 2026 increased 10.0% to $0.77 compared with $0.70 for the three months ended August 3, 2025. The basic and diluted earnings per share increased due to an increase in net income and lower Class A share counts following share repurchase transactions.

Adjusted EBITDA for the three months ended August 2, 2026 increased $8 million, or 3.0%, to $274 million compared with $266 million for the three months ended August 3, 2025. The increase in Adjusted EBITDA was primarily attributable to higher gross profit. For a reconciliation of Adjusted EBITDA to net income or net income attributable to Core & Main, Inc., the most comparable GAAP financial metric, as applicable, see “Non-GAAP Financial Measures” below.

Adjusted Diluted Earnings Per Share ("Adjusted Diluted EPS") for the three months ended August 2, 2026 increased 8.0% to $0.94 compared with $0.87 for the three months ended August 3, 2025. The increase in Adjusted Diluted EPS was primarily attributable to an increase in net income and lower Class A share counts following share repurchase transactions. For a reconciliation of Adjusted Diluted EPS to diluted earnings per share, the most comparable GAAP financial metric, as applicable, see “Non-GAAP Financial Measures” below.

Core & Main Announces Fiscal 2026 Second Quarter Results

Six Months Ended August 2, 2026

Net sales for the six months ended August 2, 2026 increased $51 million, or 1.3%, to $4,055 million compared with $4,004 million for the six months ended August 3, 2025. Net sales increased primarily due to acquisitions. Net sales for pipes, valves & fittings increased due to acquisitions. Net sales for storm drainage decreased due to lower volumes partially offset by acquisitions. Net sales of fire protection products increased due to higher volumes and higher selling prices. Net sales of smart utility products increased due to higher volumes and higher selling prices.

Gross profit for the six months ended August 2, 2026 increased $23 million, or 2.1%, to $1,093 million compared with $1,070 million for the six months ended August 3, 2025. Gross profit as a percentage of net sales for the six months ended August 2, 2026 was 27.0% compared with 26.7% for the six months ended August 3, 2025. The overall increase in gross profit as a percentage of net sales was primarily attributable to favorable impacts from the execution of our gross margin initiatives and disciplined purchasing and pricing management.

SG&A expenses for the six months ended August 2, 2026 increased $5 million, or 0.8%, to $600 million compared with $595 million during the six months ended August 3, 2025. The increase in SG&A expense was primarily attributable to higher distribution costs and investments to support long-term growth, including greenfield expansion and sales initiatives, partially offset by the benefits of recent cost actions and lower variable compensation costs. SG&A expenses as a percentage of net sales were 14.8% for the six months ended August 2, 2026 compared with 14.9% for the six months ended August 3, 2025.

Operating income for the six months ended August 2, 2026 increased $20 million, or 5.2%, to $404 million compared with $384 million during the six months ended August 3, 2025. The increase in operating income was primarily attributable to higher gross profit partially offset by higher SG&A expenses.

Net income for the six months ended August 2, 2026 increased $17 million, or 6.9%, to $263 million compared with $246 million for the six months ended August 3, 2025. The increase in net income was primarily attributable to an increase in operating income.

The Class A common stock basic earnings per share for the six months ended August 2, 2026 increased 8.9% to $1.34 compared with $1.23 for the six months ended August 3, 2025. The Class A common stock diluted earnings per share for the six months ended August 2, 2026 increased 9.8% to $1.34 compared with $1.22 for the six months ended August 3, 2025. The basic and diluted earnings per share increased due to an increase in net income and lower Class A share counts following share repurchase transactions.

Adjusted EBITDA for the six months ended August 2, 2026 increased $10 million, or 2.0%, to $500 million compared with $490 million for the six months ended August 3, 2025. The increase in Adjusted EBITDA was primarily attributable to higher gross profit partially offset by higher SG&A expenses. For a reconciliation of Adjusted EBITDA to net income or net income attributable to Core & Main, Inc., the most comparable GAAP financial metric, as applicable, see “Non-GAAP Financial Measures” below.

Adjusted Diluted Earnings Per Share for the six months ended August 2, 2026 increased 7.1% to $1.66 compared with $1.55 for the six months ended August 3, 2025. The increase in Adjusted Diluted Earnings Per Share was primarily attributable to an increase in net income and lower Class A share counts following share repurchase transactions. For a reconciliation of Adjusted Diluted EPS to diluted earnings per share, the most comparable GAAP financial metric, as applicable, see “Non-GAAP Financial Measures” below.

Liquidity and Capital Resources

Net cash provided by operating activities was $144 million for the six months ended August 2, 2026 compared with $111 million for the six months ended August 3, 2025. The $33 million increase was due to an increase in net income, lower tax payments and changes in working capital in the six months ended August 2, 2026 partially offset by higher interest payments.

Core & Main Announces Fiscal 2026 Second Quarter Results

Net Debt, calculated as gross consolidated debt net of cash and cash equivalents, as of August 2, 2026 was $2,166 million compared with $2,253 million as of August 3, 2025. The decrease in Net Debt was primarily attributable to lower borrowings on our senior asset-based revolving credit facility ("Senior ABL Credit Facility").

As of August 2, 2026, there were no outstanding borrowings on our Senior ABL Credit Facility, which provides for borrowings of up to $1,250 million, subject to borrowing base availability. As of August 2, 2026, after giving effect to approximately $24 million of letters of credit issued under the Senior ABL Credit Facility, Core & Main LP would have been able to borrow approximately $1,226 million under the Senior ABL Credit Facility, subject to borrowing base availability.

Fiscal 2026 Outlook

Core & Main reaffirms its full-year fiscal 2026 outlook issued in March 2026.

•Net sales of $7,800 to $7,900 million, reflecting net sales growth of 2% to 3%

•Adjusted EBITDA (Non-GAAP) of $950 to $980 million

•Adjusted EBITDA Margin (Non-GAAP) of 12.2% to 12.4%

•Operating Cash Flow of 60% to 70% of Adjusted EBITDA

Conference Call & Webcast Information

Core & Main will host a conference call and webcast on September 9, 2026, at 8:30 a.m. ET to discuss the company's financial results. The live webcast will be accessible via the events calendar at ir.coreandmain.com. The conference call may also be accessed by dialing 833-461-5787 or +1-585-542-9983 (international). The passcode for the call is 858 028 883. To ensure participants are connected for the full call, please dial in at least 10 minutes prior to the start of the call.

An archived version of the webcast will be available immediately following the call. A slide presentation highlighting Core & Main’s results will also be made available on the Investor Relations section of Core & Main’s website prior to the call.

About Core & Main

Based in St. Louis, Core & Main is a leader in advancing reliable infrastructure® with local service, nationwide®. As a specialty distributor with a focus on water, wastewater, storm drainage and fire protection products and related services, Core & Main provides solutions to municipalities, private water companies and professional contractors across municipal, non-residential and residential end markets in the United States and Canada. With more than 370 locations, the company provides its customers local expertise backed by a national supply chain. Core & Main’s 5,600 associates are committed to helping their communities thrive with safe and reliable infrastructure. Visit coreandmain.com to learn more.

Cautionary Note Regarding Forward-Looking Statements

This press release contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements include, without limitation, all statements other than statements of historical or current facts contained in this press release, including statements relating to our intentions, beliefs, assumptions or current expectations concerning, among other things, our future results of operations and financial position, business strategy and plans and objectives of management for future operations, including, among others, statements regarding expected growth, future capital expenditures, capital allocation and debt service obligations, and the anticipated impact on our business.

Core & Main Announces Fiscal 2026 Second Quarter Results

Some of the forward-looking statements can be identified by the use of forward-looking terms such as “believes,” “expects,” “may,” “will,” “shall,” “should,” “would,” “could,” “seeks,” “aims,” “projects,” “is optimistic,” “intends,” “plans,” “estimates,” “anticipates” or the negative versions of these words or other comparable terms.

Forward-looking statements are subject to known and unknown risks and uncertainties, many of which may be outside our control. We caution you that forward-looking statements are not guarantees of future performance or outcomes and that actual performance and outcomes, including, without limitation, our actual results of operations, financial condition and liquidity, and the development of the market in which we operate, may differ materially from those made in or suggested by the forward-looking statements contained in this press release. In addition, even if our results of operations, financial condition, cash flows and the development of the market in which we operate are consistent with the forward-looking statements contained in this press release, those results or developments may not be indicative of results or developments in subsequent periods. A number of important factors, including, without limitation, the risks and uncertainties discussed under the captions “Risk Factors” in our Annual Report on Form 10-K for the fiscal year ended February 1, 2026 and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our Annual Report on Form 10-K for the fiscal year ended February 1, 2026, could cause actual results and outcomes to differ materially from those reflected in the forward-looking statements. Furthermore, new risks and uncertainties emerge from time to time, and it is not possible for us to predict all risks and uncertainties that could have an impact on the forward-looking statements contained in this press release.

Factors that could cause actual results and outcomes to differ from those reflected in forward-looking statements include, without limitation, declines, volatility and cyclicality in the U.S. residential and non-residential construction markets; slowdowns in municipal infrastructure spending and delays in appropriations of federal funds; our ability to competitively bid for contracts; price fluctuations in our product costs (including effects of tariffs); our ability to manage our inventory effectively, including during periods of supply chain disruptions; risks involved with acquisitions and other strategic transactions, including our ability to identify, acquire, close or integrate acquisition targets successfully; the fragmented and highly competitive markets in which we compete and consolidation within our industry; the development of alternatives to distributors of our products in the supply chain; our ability to hire, engage and retain key personnel, including sales representatives, qualified branch, district and regional managers and senior management; our ability to identify, develop and maintain relationships with a sufficient number of qualified suppliers and the potential that our exclusive or limited supplier distribution rights are terminated; changes in supplier rebates or other terms of our supplier agreements; the availability of freight; the ability of our customers to make payments on credit sales; our ability to identify and introduce new products and product lines effectively; the spread of, and response to, public health crises and the inability to predict the ultimate impact on us; costs and potential liabilities or obligations imposed by environmental, health and safety laws and requirements; regulatory change and the costs of compliance with regulation; changes in stakeholder expectations in respect of environmental, social and governance and sustainability practices; exposure to product liability, construction defect and warranty claims and other litigation and legal proceedings; potential harm to our brand or reputation; difficulties with or interruptions of our fabrication services; safety and labor risks associated with the distribution of our products; interruptions in the proper functioning of our and our third-party service providers' information technology systems, including from cybersecurity threats; impairment in the carrying value of goodwill, intangible assets or other long-lived assets; our ability to continue our customer relationships with short-term contracts; risks associated with operating internationally, including exporting and importing of certain products; our indebtedness and the potential that we may incur additional indebtedness that might restrict our operating flexibility; the limitations and restrictions in the agreements governing our indebtedness, the Amended and Restated Limited Partnership Agreement of Core & Main Holdings, LP, as amended, and the Tax Receivable Agreements (each as defined in our Annual Report on Form 10-K for the fiscal year ended February 1, 2026); increases in interest rates on our variable rate indebtedness; changes in our credit ratings and outlook; our ability to generate the significant amount of cash needed to service our indebtedness; our organizational structure, including our payment obligations under the Tax Receivable Agreements, which may be significant; our ability to sustain an active, liquid trading market for our Class A common stock; and risks related to other factors discussed under “Risk Factors” in our Annual Report on Form 10-K for the fiscal year ended February 1, 2026.

Core & Main Announces Fiscal 2026 Second Quarter Results

Additional information concerning these and other factors can be found in our filings with the Securities and Exchange Commission. All forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by the foregoing cautionary statements. All such statements speak only as of the date made and, except as required by law, we undertake no obligation to update or revise publicly any forward-looking statements, whether as a result of new information, future events, or otherwise.

Contacts

Investor Relations:

Landon Althoff, 314-372-0264

InvestorRelations@CoreandMain.com

Media Relations:

Patrick Lunsford, 314-789-0726

Media@CoreandMain.com

Core & Main Announces Fiscal 2026 Second Quarter Results

CORE & MAIN, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

Amounts in millions (except share and per share data), unaudited

Three Months Ended

Six Months Ended

August 2, 2026

August 3, 2025

August 2, 2026

August 3, 2025

Net sales

2,145

2,093

4,055

4,004

Cost of sales

1,572

1,533

2,962

2,934

Gross profit

573

560

1,093

1,070

Operating expenses:

Selling, general and administrative

301

302

600

595

Depreciation and amortization

Total operating expenses

346

347

689

686

Operating income

227

213

404

384

Interest expense

Other expense

—

Income before provision for income taxes

193

182

343

323

Provision for income taxes

Net income

150

141

263

246

Less: net income attributable to non-controlling interests

Net income attributable to Core & Main, Inc.

144

134

252

234

Earnings per share (“EPS”)

Basic

0.77

0.71

1.34

1.23

Diluted

0.77

0.70

1.34

1.22

Number of shares used in computing EPS

Basic

186,639,659

189,904,002

187,507,875

189,855,388

Diluted

193,359,334

198,302,610

194,519,350

198,503,146

Core & Main Announces Fiscal 2026 Second Quarter Results

CORE & MAIN, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

Amounts in millions (except share and per share data), unaudited

August 2, 2026

February 1, 2026

ASSETS

Current assets:

Cash and cash equivalents

312

220

Receivables, net of allowance for credit losses of $26 and $22, respectively

1,439

1,048

Inventories

1,137

986

Prepaid expenses and other current assets

Total current assets

2,937

2,302

Property, plant and equipment, net

192

178

Operating lease right-of-use assets

297

287

Intangible assets, net

759

823

Goodwill

1,921

1,920

Deferred income taxes

552

565

Other assets

Total assets

6,709

6,085

LIABILITIES AND STOCKHOLDERS’ EQUITY

Current liabilities:

Current maturities of long-term debt

Accounts payable

815

512

Accrued compensation and benefits

123

Current operating lease liabilities

Other current liabilities

190

140

Total current liabilities

1,190

874

Long-term debt

2,432

2,124

Non-current operating lease liabilities

221

214

Deferred income taxes

Tax receivable agreement liabilities

644

680

Other liabilities

Total liabilities

4,605

4,011

Commitments and contingencies

Class A common stock, par value $0.01 per share, 1,000,000,000 shares authorized, 184,443,500 and 188,770,435 shares issued and outstanding as of August 2, 2026 and February 1, 2026, respectively

Class B common stock, par value $0.01 per share, 500,000,000 shares authorized, 6,301,342 and 6,611,263 shares issued and outstanding as of August 2, 2026 and February 1, 2026, respectively

—

Additional paid-in capital

1,242

1,246

Retained earnings

784

755

Accumulated other comprehensive income (loss)

(6)

Total stockholders’ equity attributable to Core & Main, Inc.

2,031

1,997

Non-controlling interests

Total stockholders’ equity

2,104

2,074

Total liabilities and stockholders’ equity

6,709

6,085

Core & Main Announces Fiscal 2026 Second Quarter Results

CORE & MAIN, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

Amounts in millions, unaudited

Six Months Ended

August 2, 2026

August 3, 2025

Cash Flows From Operating Activities:

Net income

263

246

Adjustments to reconcile net cash from operating activities:

Depreciation and amortization

Equity-based compensation expense

Deferred income tax expense

Other

Changes in assets and liabilities:

(Increase) decrease in receivables

(397)

(300)

(Increase) decrease in inventories

(155)

(152)

(Increase) decrease in other assets

(1)

(5)

Increase (decrease) in accounts payable

301

196

Increase (decrease) in accrued liabilities

Net cash provided by operating activities

144

111

Cash Flows From Investing Activities:

Capital expenditures

(32)

(23)

Investment in tax advantaged limited partnerships

(17)

—

Other

(7)

(5)

Net cash used in investing activities

(56)

(28)

Cash Flows From Financing Activities:

Repurchase and retirement of equity interests

(257)

(47)

Distributions to non-controlling interest holders

(4)

Payments pursuant to Tax Receivable Agreements

(42)

(18)

Borrowings on asset-based revolving credit facility

—

100

Repayments on asset-based revolving credit facility

—

(93)

Issuance of long-term debt

929

—

Repayments of long-term debt

(617)

(12)

Debt issuance costs

(19)

—

Other

Net cash provided by (used in) financing activities

(66)

Increase in cash and cash equivalents

Cash and cash equivalents at the beginning of the period

220

Cash and cash equivalents at the end of the period

312

Cash paid for interest (excluding effects of interest rate swap)

Cash paid for income taxes

Core & Main Announces Fiscal 2026 Second Quarter Results

Non-GAAP Financial Measures

In addition to providing results that are determined in accordance with accounting principles generally accepted in the United States of America ("GAAP"), we present EBITDA, Adjusted EBITDA, Adjusted EBITDA margin, Net Debt and Adjusted Diluted EPS, all of which are non-GAAP financial measures. These measures are not considered measures of financial performance or liquidity under GAAP and the items excluded therefrom are significant components in understanding and assessing our financial performance or liquidity. These measures should not be considered in isolation or as alternatives to GAAP measures such as net income, net income attributable to Core & Main, Inc. or diluted earnings per share, as applicable, cash provided by or used in operating, investing or financing activities or other financial statement data presented in our financial statements as an indicator of our financial performance or liquidity.

We define EBITDA as net income or net income attributable to Core & Main, Inc., as applicable, adjusted for non-controlling interests, depreciation and amortization, provision for income taxes and interest expense. We define Adjusted EBITDA as EBITDA as further adjusted for certain items management believes are not reflective of the underlying operations of our business, including but not limited to (a) loss on debt modification and extinguishment, (b) equity-based compensation, (c) expenses associated with the initial public offering and subsequent secondary offerings and (d) other income or other expense. Net income attributable to Core & Main, Inc. is the most directly comparable GAAP measure to EBITDA and Adjusted EBITDA. We define Adjusted EBITDA margin as Adjusted EBITDA divided by net sales. We define Net Debt as total consolidated debt (gross of unamortized discounts and debt issuance costs), net of cash and cash equivalents.

We define Adjusted Diluted EPS as diluted earnings per share adjusted for (a) amortization of intangible assets, (b) loss on debt modification and extinguishment, (c) equity-based compensation, (d) expenses associated with the initial public offering and subsequent secondary offerings, (e) other income or other expense and (f) the tax impact of these Non-GAAP adjustments, divided by the weighted-average number of shares of our common stock outstanding on a fully diluted basis for the applicable period. Diluted earnings per share is the most directly comparable GAAP measure to Adjusted Diluted EPS.

We use EBITDA, Adjusted EBITDA, Adjusted EBITDA margin, Net Debt and Adjusted Diluted EPS to assess the operating results and effectiveness and efficiency of our business. Adjusted EBITDA and Adjusted Diluted EPS include amounts otherwise attributable to non-controlling interests as we manage the consolidated Company and evaluate operating performance in a similar manner. We present these non-GAAP financial measures because we believe that investors consider them to be important supplemental measures of performance, and we believe that these measures are frequently used by securities analysts, investors and other interested parties in the evaluation of companies in our industry. Non-GAAP financial measures as reported by us may not be comparable to similarly titled metrics reported by other companies and may not be calculated in the same manner. These measures have limitations as analytical tools, and investors should not consider them in isolation or as substitutes for analysis of our results as reported under GAAP.

No reconciliation of the estimated range for Adjusted EBITDA and Adjusted EBITDA margin for fiscal 2026 is included herein because we are unable to quantify certain amounts that would be required to be included in net income attributable to Core & Main, Inc., without unreasonable efforts due to the high variability and difficulty to predict certain items excluded from Adjusted EBITDA. Consequently, we believe such reconciliation would imply a degree of precision that would be misleading to investors. In particular, the effects of acquisition expenses cannot be reasonably predicted in light of the inherent difficulty in quantifying such items on a forward-looking basis. We expect the variability of these excluded items may have an unpredictable, and potentially significant, impact on our future GAAP financial results.

Core & Main Announces Fiscal 2026 Second Quarter Results

The following table sets forth a reconciliation of net income or net income attributable to Core & Main, Inc. to EBITDA and Adjusted EBITDA for the periods presented:

(Amounts in millions)

Three Months Ended

Six Months Ended

August 2, 2026

August 3, 2025

August 2, 2026

August 3, 2025

Net income attributable to Core & Main, Inc.

144

134

252

234

Plus: net income attributable to non-controlling interest

Net income

150

141

263

246

Depreciation and amortization (1)

Provision for income taxes

Interest expense

EBITDA

270

259

493

477

Equity-based compensation

Other expenses (2)

—

Adjusted EBITDA

274

266

500

490

(1)Includes depreciation of certain assets which are reflected in “cost of sales” in our Statement of Operations.

(2)Represents expenses associated with acquisition and other activities, including transaction costs, contingent consideration arrangement fair value adjustments, post-acquisition employee retention bonuses, severance payments and expense recognition of purchase accounting fair value adjustments (excluding amortization).

The following table sets forth a reconciliation of diluted earnings per share to Adjusted Diluted EPS for the periods presented:

Three Months Ended

Six Months Ended

August 2, 2026

August 3, 2025

August 2, 2026

August 3, 2025

Diluted earnings per share

0.77

0.70

1.34

1.22

Amortization of intangible assets

0.18

0.19

0.37

Equity-based compensation

0.02

0.03

0.04

0.05

Other expenses (1)

0.02

0.01

0.02

Income tax impact of adjustments (2)

(0.05)

(0.06)

(0.10)

(0.11)

Adjusted Diluted Earnings Per Share

0.94

0.87

1.66

1.55

(1)Represents expenses associated with acquisition and other activities, including transaction costs, write off of deferred financing fees, contingent consideration arrangement fair value adjustments, post-acquisition employee retention bonuses, severance payments and expense recognition of purchase accounting fair value adjustments (excluding amortization).

(2) Represents the tax impact on the above non-GAAP adjustments.

Core & Main Announces Fiscal 2026 Second Quarter Results

The following table sets forth a calculation of Net Debt for the periods presented:

(Amounts in millions)

As of

August 2, 2026

August 3, 2025

Senior ABL Credit Facility due April 2031

—

100

Senior Term Loan due July 2028

—

1,241

Senior Term Loan due February 2031

928

937

Senior Term Loan due July 2033

800

—

Senior Notes due July 2034

750

—

Total Debt

2,478

2,278

Less: Cash & Cash Equivalents

(312)

(25)

Net Debt

2,166

2,253

Core & Main Announces Fiscal 2026 Second Quarter Results

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cnmq226investorpres

Fiscal 2026 Second Quarter Results September 9, 2026

© Core & Main All Rights Reserved. Confidential and Proprietary Information. CAUTIONARY STATEMENTS Cautionary Note Regarding Forward-Looking Statements This presentation and accompanying discussion may include “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements include, without limitation, all statements other than statements of historical or current facts contained in this presentation including statements relating to our intentions, beliefs, assumptions or current expectations concerning, among other things, our future results of operations and financial position, business strategy and plans and objectives of management for future operations, including, among others, statements regarding expected growth, future capital expenditures, capital allocation and debt service obligations, and the anticipated impact on our business. Some of the forward-looking statements can be identified by the use of forward-looking terms such as “believes,” “expects,” “may,” “will,” “shall,” “should,” “would,” “could,” “seeks,” “aims,” “projects,” “is optimistic,” “intends,” “plans,” “estimates,” “anticipates” or the negative versions of these words or other comparable terms. Forward-looking statements are subject to known and unknown risks and uncertainties, many of which may be outside our control. We caution you that forward-looking statements are not guarantees of future performance or outcomes and that actual performance and outcomes, including, without limitation, our actual results of operations, financial condition and liquidity, and the development of the market in which we operate, may differ materially from those made in or suggested by the forward-looking statements contained in this presentation. In addition, even if our results of operations, financial condition, cash flows and the development of the market in which we operate, are consistent with the forward-looking statements contained in this presentation, those results or developments may not be indicative of results or developments in subsequent periods. A number of important factors, including, without limitation, the risks and uncertainties discussed under the captions “Risk Factors” in our Annual Report on Form 10-K for the fiscal year ended February 1, 2026 (“Annual Report on Form 10-K”) and other factors discussed in our filings with the United States Securities and Exchange Commission, could cause actual results and outcomes to differ materially from those reflected in the forward-looking statements. Furthermore, new risks and uncertainties emerge from time to time, and it is not possible for us to predict all risks and uncertainties that could have an impact on the forward-looking statements contained in this presentation. Factors that could cause actual results and outcomes to differ from those reflected in forward-looking statements include, without limitation: declines, volatility and cyclicality in the U.S. residential and non-residential construction markets; slowdowns in municipal infrastructure spending and delays in appropriations of federal funds; our ability to competitively bid for contracts; price fluctuations in our product costs (including effects of tariffs); our ability to manage our inventory effectively, including during periods of supply chain disruptions; risks involved with acquisitions and other strategic transactions, including our ability to identify, acquire, close or integrate acquisition targets successfully; the fragmented and highly competitive markets in which we compete and consolidation within our industry; the development of alternatives to distributors of our products in the supply chain; our ability to hire, engage and retain key personnel, including sales representatives, qualified branch, district and regional managers and senior management; our ability to identify, develop and maintain relationships with a sufficient number of qualified suppliers and the potential that our exclusive or limited supplier distribution rights are terminated; changes in supplier rebates or other terms of our supplier agreements; the availability of freight; the ability of our customers to make payments on credit sales; our ability to identify and introduce new products and product lines effectively; the spread of, and response to, public health crises and the inability to predict the ultimate impact on us; costs and potential liabilities or obligations imposed by environmental, health and safety laws and requirements; regulatory change and the costs of compliance with regulation; changes in stakeholder expectations in respect of environmental, social and governance and sustainability practices; exposure to product liability, construction defect and warranty claims and other litigation and legal proceedings; potential harm to our brand or reputation; difficulties with or interruptions of our fabrication services; safety and labor risks associated with the distribution of our products; interruptions in the proper functioning of our and our third-party service providers’ information technology systems, including from cybersecurity threats; impairment in the carrying value of goodwill, intangible assets or other long-lived assets; our ability to continue our customer relationships with short-term contracts; risks associated with operating internationally, including exporting and importing of certain products; our indebtedness and the potential that we may incur additional indebtedness that might restrict our operating flexibility; the limitations and restrictions in the agreements governing our indebtedness, the Amended and Restated Limited Partnership Agreement of Core & Main Holdings, LP as amended, and the Tax Receivable Agreements (each as defined in our Annual Report on Form 10-K); increases in interest rates on our variable rate indebtedness; changes in our credit ratings and outlook; our ability to generate the significant amount of cash needed to service our indebtedness; our organizational structure, including our payment obligations under the Tax Receivable Agreements, which may be significant; our ability to sustain an active, liquid trading market for our Class A common stock; and risks related to other factors described under “Risk Factors” in our Annual Report on Form 10-K . These factors are not exhaustive, and new factors may emerge or changes to the foregoing factors may occur that could impact our business. Except to the extent required by law, we undertake no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, which speak only as of the date of this presentation. Use of Non-GAAP Financial Measures In addition to providing results that are determined in accordance with accounting principles generally accepted in the United States of America (“GAAP”), we present EBITDA, Adjusted EBITDA, Adjusted EBITDA margin, Net Debt, Adjusted Diluted Earnings Per Share (“Adjusted Diluted EPS"), Free Cash Flow and Free Cash Flow Yield, all of which are non-GAAP financial measures. These measures are not considered measures of financial performance or liquidity under GAAP and the items excluded therefrom are significant components in understanding and assessing our financial performance or liquidity. These measures should not be considered in isolation or as alternatives to GAAP measures such as net income, net income attributable to Core & Main, Inc. or diluted earnings per share, as applicable, cash provided by or used in operating, investing or financing activities or other financial statement data presented in our financial statements as an indicator of our financial performance or liquidity. We use EBITDA, Adjusted EBITDA, Adjusted EBITDA margin, Net Debt, Adjusted Diluted EPS, Free Cash Flow and Free Cash Flow Yield to assess the operating results and effectiveness and efficiency of our business. We present these non-GAAP financial measures because we believe investors consider them to be important supplemental measures of performance, and we believe that these measures are frequently used by securities analysts, investors and other interested parties in the evaluation of companies in our industry. Non-GAAP financial measures as reported by us may not be comparable to similarly titled metrics reported by other companies and may not be calculated in the same manner. These measures have limitations as analytical tools, and you should not consider them in isolation or as substitutes for analysis of our results as reported under GAAP. Reconciliations of such non-GAAP measures to the most directly comparable GAAP measure and calculations of the non-GAAP measures are set forth in the appendix of this presentation. No reconciliation of the estimated range for Adjusted EBITDA and Adjusted EBITDA margin for fiscal 2026 is included herein because we are unable to quantify certain amounts that would be required to be included in net income attributable to Core & Main, Inc. without unreasonable efforts due to the high variability and difficulty to predict certain items excluded from Adjusted EBITDA. Consequently, we believe such reconciliation would imply a degree of precision that would be misleading to investors. In particular, the effects of acquisition expenses cannot be reasonably predicted in light of the inherent difficulty in quantifying such items on a forward-looking basis. We expect the variability of these excluded items may have an unpredictable, and potentially significant, impact on our future GAAP financial results. Presentation of Financial Information The accompanying financial information presents the results of operations, financial position and cash flows of Core & Main, Inc. (“Core & Main” or the “Company”) and its subsidiaries, which includes the consolidated financial information of Core & Main Holdings, LP, a Delaware limited partnership (“Holdings”), and its consolidated subsidiary, Core & Main LP, as the legal entity that conducts the operations of the Company. Core & Main is the primary beneficiary and general partner of Holdings and has decision making authority that significantly affects the economic performance of the entity. As a result, Core & Main consolidates the consolidated financial statements of Holdings. All intercompany balances and transactions have been eliminated in consolidation. The Company records non-controlling interests related to Partnership Interests (as defined in our Annual Report on Form 10-K) held by the Continuing Limited Partners (as defined in our Annual Report on Form 10-K) in Holdings. The Company’s fiscal year is a 52 or 53-week period ending on the Sunday nearest to January 31st. Quarters within the fiscal year include 13-week periods, unless a fiscal year includes a 53rd week, in which case the fourth quarter of the fiscal year will be a 14-week period. Each of the three months ended August 2, 2026 and three months ended August 3, 2025 included 13 weeks and each of the six months ended August 2, 2026 and six months ended August 3, 2025 included 26 weeks. The current fiscal year ending January 31, 2027 (“fiscal 2026”) will include 52 weeks. 2

© Core & Main All Rights Reserved. Confidential and Proprietary Information. MANAGEMENT IN ATTENDANCE Mark Witkowski Chief Executive Officer Robyn Bradbury Chief Financial Officer Landon Althoff Vice President, Investor Relations 3 Brad Cowles President

Business Update MARK WITKOWSKI

© Core & Main All Rights Reserved. Confidential and Proprietary Information. Q2 2026 BUSINESS UPDATE Building Momentum Through Municipal Strength, Growth Initiatives and Capital Deployment ▪ Delivered Q2'26 net sales of $2.1B, Adjusted EBITDA(1) of $274M and Adjusted Diluted EPS(1) of $0.94 ▪ Expanded Adjusted EBITDA margin +10 bps vs. prior year, while driving meaningful SG&A leverage +40 bps vs. prior year ▪ Deployed significant levels of capital, executing second consecutive quarter of record open market share repurchases while continuing to invest in growth ▪ Deployed $169M in Q2'26 to repurchase 3.7M shares; additional $11M deployed to repurchase 0.3M shares subsequent to quarter-end ▪ Nearly $270M deployed and 5.7M shares repurchased year-to-date ▪ Municipal demand remained source of strength, supported by investment in water and wastewater infrastructure ▪ Fire protection and large capital projects, including treatment plants and data centers, delivered another quarter of strong growth ▪ Seven greenfield locations opened year-to-date; remain on track for a record eight to ten openings in FY26 ▪ M&A opportunity remains robust, with continued progress across an active pipeline 5 (1) Adjusted EBITDA and Adjusted Diluted EPS are non-GAAP financial measures. Refer to the appendix of the presentation for a reconciliation to the nearest GAAP measure.

Financial Results ROBYN BRADBURY

© Core & Main All Rights Reserved. Confidential and Proprietary Information. $141 $150 Q2'25 Q2'26 $0.70 $0.77 Q2'25 Q2'26 $2,093 $2,145 Q2'25 Q2'26 $0.87 $0.94 Q2'25 Q2'26 $266 $274 Q2'25 Q2'26 $560 $573 Q2'25 Q2'26 7 Q2 2026 FINANCIAL RESULTS Net Sales Net Income ($ in Millions, Except Per Share Amounts) Gross Profit Adjusted EBITDA(1) Diluted EPS Adjusted Diluted EPS(1) (1) Adjusted EBITDA, Adjusted EBITDA margin and Adjusted Diluted EPS are non-GAAP financial measures. Refer to the appendix of the presentation for a reconciliation to the nearest GAAP measure. +2.5% % of Sales 26.8% 26.7%(10 bps) +2.3% +30 bps % of Sales +6.4% 12.8%12.7% +10 bps% of Sales(1) +3.0% +10.0% +8.0% 6.7% 7.0%

© Core & Main All Rights Reserved. Confidential and Proprietary Information. $274 $62 Q2'26 Adjusted EBITDA Working Capital Interest Taxes Other Q2'26 Operating Cash Flow 7.5% 3.9% 2.9% CNM Specialty Distributor Peers S&P 500 Share Repurchases ($169M) Capital Expenditures ($18M) 8 CASH FLOW & BALANCE SHEET ($ in Millions) Operating Cash Flow Capital Structure Capital Allocation Free Cash Flow Yield(1)(4) Facility Maturity Current Interest Rate As of 8/2/26 Senior ABL Credit Facility 4/9/31 S + 125(3) $ — Senior Term Loan due 2031 2/9/31 S + 175 928 Senior Term Loan due 2033 7/1/33 S + 175 800 Senior Notes due 2034 7/1/34 6.000% 750 Total Debt 2,478 Less: Cash & Cash Equivalents (312) Net Debt(1) $ 2,166 $187M (1) Adjusted EBITDA, Net Debt and Free Cash Flow Yield are non-GAAP financial measures. Refer to the appendix of the presentation for a reconciliation to the nearest GAAP measure. (2) Represents operating cash taxes paid to the IRS and other state & local taxing authorities. Does not include the portion of our tax obligation distributed to non- controlling interest holders as a financing cash outflow. (3) Carries interest at term secured overnight financing rate ("Term SOFR") plus a margin ranging from 125 to 150 basis points, depending on borrowing capacity. (4) Defined as last twelve months free cash flow (net cash provided by operating activities minus capital expenditures) divided by market capitalization as of August 2, 2026. (5) Includes Ferguson, SiteOne Landscape Supply, Pool Corporation and Watsco. (5) (1) (2) ($197) ($14) ($11) $10

© Core & Main All Rights Reserved. Confidential and Proprietary Information. FISCAL 2026 OUTLOOK 9 (1) Adjusted EBITDA and Adjusted EBITDA margin are non-GAAP financial measures. Refer to “Use of Non-GAAP Financial Measures” for a discussion regarding the lack of a reconciliation of these estimated ranges. (2) Defined as net cash provided by (used in) operating activities divided by Adjusted EBITDA for the period presented. Guidance Reaffirmed ($ in Millions) FY25 FY26 Outlook Net Sales $7,647 $7,800 - $7,900 Adjusted EBITDA(1) $931 $950 - $980 Adjusted EBITDA Margin(1) 12.2% 12.2% - 12.4% Operating Cash Flow Conversion(2) 70% 60% - 70%

Appendix

© Core & Main All Rights Reserved. Confidential and Proprietary Information. 11 CORE & MAIN SNAPSHOT Key Stats Market Reach $8.4B Market Cap $7.7B LTM Net Sales $941M LTM Adjusted EBITDA(2) 370+ Branches ~5,600 Associates 60K+ Customers 5,000+ Suppliers Total Market Share $44B TAM Market Mix New Construction vs. Repair & Replace (1) As of August 2, 2026. (2) Adjusted EBITDA is a non-GAAP financial measure. Refer to the appendix for a reconciliation to the nearest GAAP measure. (3) As of the fiscal year ended February 1, 2026. (4) Based on independent third-party research and management estimates. (5) Total addressable market is inclusive of the United States and Canada. Leader in Advancing Reliable Infrastructure with Local Service, Nationwide $479M LTM Net Income Branch locations Headquarters 225K+ Products (1) (3) (3) (3) (3) U.S. Market Share $39B TAM(4) (3) (4)(5)

© Core & Main All Rights Reserved. Confidential and Proprietary Information. 13 SALES INITIATIVES DRIVING MARKET SHARE GAINS Industry-Leading Capabilities Drive Consistent Above Market Growth Smart Utility Fusible HDPETreatment Plant Solutions Geosynthetics Geographic ExpansionStrategic Accounts

© Core & Main All Rights Reserved. Confidential and Proprietary Information. 14 CONSISTENT RECORD OF M&A 3 Branches ~$50M C um ul at iv e D ea ls C lo se d Proven Acquisition Model with a Long Record of Successful Integrations 2017 2018 2019 2020 2021 2022 2023 2024 4 Branches ~$20M 27 Branches ~$200M 15 Branches ~$220M 18 Branches ~$150M 14 Branches ~$160M 20 Branches ~$330M 40 Branches ~$620M 2025 2026 YTD 5 Branches ~$95M 2 Branches 43 Deals Acquired Sales:

© Core & Main All Rights Reserved. Confidential and Proprietary Information. CAPITAL ALLOCATION FRAMEWORK 15 Priority Uses for Capital Organic Growth & Operational Initiatives M&A Share Repurchases or Dividends Significant Cash Generation with a Focus on Fueling Growth & Shareholder Returns ▪ Expect future capital expenditures to average ~0.7% – 0.8% of net sales ▪ Maintain a robust M&A pipeline and a disciplined approach to sourcing, acquiring and integrating businesses ▪ Deploy surplus capital towards share repurchases and/or dividends, subject to board approval and market conditions Operating Cash Flow Target ~60% – 70% of Adjusted EBITDA Maintain Flexible Balance Sheet with Net Debt Leverage Target of 1.5x – 3.0x

© Core & Main All Rights Reserved. Confidential and Proprietary Information. RECONCILIATION OF NON-GAAP MEASURES 16 (1) Includes depreciation of certain assets which are reflected in “cost of sales” in our Statement of Operations. (2) Represents expenses associated with acquisition and other activities, including transaction costs, post-acquisition employee retention bonuses, severance payments and expense recognition of purchase accounting fair value adjustments (excluding amortization). ($ in Millions) Adjusted EBITDA & Adjusted EBITDA Margin Three Months Ended Six Months Ended Twelve Months Ended August 2, 2026 August 3, 2025 August 2, 2026 August 3, 2025 August 2, 2026 Net income attributable to Core & Main, Inc. $ 144 $ 134 $ 252 $ 234 $ 459 Plus: net income attributable to non-controlling interest 6 7 11 12 20 Net income 150 141 263 246 479 Depreciation and amortization (1) 45 46 91 93 184 Provision for income taxes 43 41 80 77 148 Interest expense 32 31 59 61 118 EBITDA $ 270 $ 259 $ 493 $ 477 $ 929 Equity-based compensation 4 5 7 10 14 Other expenses/(income) (2) — 2 — 3 (2) Adjusted EBITDA $ 274 $ 266 $ 500 $ 490 $ 941 Adjusted EBITDA Margin: Net Sales $ 2,145 $ 2,093 $ 4,055 $ 4,004 $ 7,698 Adjusted EBITDA / Net Sales 12.8% 12.7% 12.3% 12.2% 12.2% Net Income Margin: Net Sales $ 2,145 $ 2,093 $ 4,055 $ 4,004 $ 7,698 Net Income / Net Sales 7.0% 6.7% 6.5% 6.1% 6.2%

© Core & Main All Rights Reserved. Confidential and Proprietary Information. RECONCILIATION OF NON-GAAP MEASURES 17 Adjusted Diluted EPS (1) Represents expenses associated with acquisition and other activities, including transaction costs, write off of deferred financing fees, contingent consideration arrangement fair value adjustments, post-acquisition employee retention bonuses, severance payments and expense recognition of purchase accounting fair value adjustments (excluding amortization). (2) Represents costs related to the subsequent secondary offerings. (3) Represents the tax impact on the above non-GAAP adjustments. Three Months Ended Six Months Ended Fiscal Years Ended August 2, 2026 August 3, 2025 August 2, 2026 August 3, 2025 February 1, 2026 February 2, 2025 January 28, 2024 Diluted earnings per share $ 0.77 $ 0.70 $ 1.34 $ 1.22 $ 2.31 $ 2.13 $ 2.15 Amortization of intangible assets 0.18 0.19 0.37 0.37 0.75 0.75 0.54 Equity-based compensation 0.02 0.03 0.04 0.05 0.09 0.07 0.04 Other expenses (1) 0.02 0.01 0.02 0.02 — 0.05 0.03 Offering expenses (2) — — — — — — 0.02 Income tax impact of adjustments (3) (0.05) (0.06) (0.10) (0.11) (0.18) (0.22) (0.16) Adjusted Diluted Earnings Per Share $ 0.94 $ 0.87 $ 1.66 $ 1.55 $ 2.97 $ 2.78 $ 2.62

© Core & Main All Rights Reserved. Confidential and Proprietary Information. RECONCILIATION OF NON-GAAP MEASURES 18 ($ in Millions, Except Share and Per Share Amounts) Free Cash Flow & Free Cash Flow Yield (1) As of July 31, 2026. Twelve Months Ended Three Months Ended August 2, 2026 August 2, 2026 May 3, 2026 February 1, 2026 November 2, 2025 Operating Cash Flow $ 683 $ 62 $ 82 $ 268 $ 271 Less: Capital Expenditures (55) (18) (14) (15) (8) Free Cash Flow $ 628 $ 44 $ 68 $ 253 $ 263 Class A Shares(1) 184,443,500 Class B Shares(1) 6,301,342 Total Shares Outstanding 190,744,842 Share Price(1) $ 43.97 Market Capitalization 8,387 Free Cash Flow Yield 7.5%

© Core & Main All Rights Reserved. Confidential and Proprietary Information. RECONCILIATION OF NON-GAAP MEASURES 19 ($ in Millions) Net Debt As of August 2, 2026 August 3, 2025 Senior ABL Credit Facility due April 2031 $ — $ 100 Senior Term Loan due July 2028 — 1,241 Senior Term Loan due February 2031 928 937 Senior Term Loan due July 2033 800 — Senior Notes due July 2034 750 — Total Debt $ 2,478 $ 2,278 Less: Cash & Cash Equivalents (312) (25) Net Debt $ 2,166 $ 2,253

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Sep. 09, 2026

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Cover page.

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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.

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- 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'.

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No definition available.

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- Definition

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

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Name of the City or Town

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Code for the postal or zip code

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Name of the state or province.

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

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

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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Indicate if registrant meets the emerging growth company criteria.

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-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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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.

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No definition available.

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

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

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

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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

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-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

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Local phone number for entity.

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No definition available.

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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 13e-4(c) under the Exchange Act.

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

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

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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.

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

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

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Title of a 12(b) registered security.

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-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

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- Definition

Name of the Exchange on which a security is registered.

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-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

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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.

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

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

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Trading symbol of an instrument as listed on an exchange.

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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 written communications pursuant to Rule 425 under the Securities Act.

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

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

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