# EDGAR Filing Document

**Accession Number:** 0001856525
**File Stem:** 0001856525-25-000167
**Filing Date:** 2025-9
**Character Count:** 9357
**Document Hash:** 2eb5d126bce5f2ca2925d666e1f90974
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001856525-25-000167.hdr.sgml**: 20250905

**ACCESSION NUMBER**: 0001856525-25-000167

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20250903

**FILED AS OF DATE**: 20250905

**DATE AS OF CHANGE**: 20250905

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Harper Carla D
- **CENTRAL INDEX KEY:** 0002084863

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40650
- **FILM NUMBER:** 251296976

**MAIL ADDRESS:**
- **STREET 1:** C/O CORE & MAIN, INC.
- **STREET 2:** 1830 CRAIG PARK COURT
- **CITY:** ST. LOUIS
- **STATE:** MO
- **ZIP:** 63146
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Core & Main, Inc.
- **CENTRAL INDEX KEY:** 0001856525
- **STANDARD INDUSTRIAL CLASSIFICATION:** WHOLESALE-DURABLE GOODS, NEC [5099]
- **ORGANIZATION NAME:** 07 Trade & Services
- **EIN:** 863149194
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0131

**BUSINESS ADDRESS:**
- **STREET 1:** 1830 CRAIG PARK COURT
- **CITY:** ST. LOUIS
- **STATE:** MO
- **ZIP:** 63146
- **BUSINESS PHONE:** 314-432-4700

**MAIL ADDRESS:**
- **STREET 1:** 1830 CRAIG PARK COURT
- **CITY:** ST. LOUIS
- **STATE:** MO
- **ZIP:** 63146

## Ex-24

**POWER OF ATTORNEY**

&nbsp;&nbsp;&nbsp;&nbsp;Know all by these presents, that the undersigned hereby constitutes and appoints each of Jackie Burkhardt, Mikael Olson, Robyn Bradbury and Mark Whittenburg, and each of them individually, the undersigned's true and lawful attorney-in-fact to:

(1)&nbsp;&nbsp;&nbsp;&nbsp;execute for and on behalf of the undersigned, in the undersigned's capacity as an Officer of Core & Main, Inc. (the "Company"), Forms 3, 4 and 5 and any other forms required to be filed in accordance with Section 16(a) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and the rules thereunder, including any amendments thereto (a "Section 16 Form");

(2)&nbsp;&nbsp;&nbsp;&nbsp;do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete and execute any such Section 16 Forms, complete and execute any amendment or amendments thereto, and timely file such Section 16 Forms with the United States Securities and Exchange Commission and any stock exchange or similar authority; and

(3)&nbsp;&nbsp;&nbsp;&nbsp;take any other action of any type whatsoever in connection with the foregoing which, in the opinion of each such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, it being understood that the documents executed by each such attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as he or she may approve in his or her discretion.

&nbsp;&nbsp;&nbsp;&nbsp;The undersigned hereby grants to each such attorney-in-fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that each such attorney-in-fact, or his or her substitute or substitutes, shall lawfully do or cause to be done by virtue of this Power of Attorney and the rights and powers herein granted. The undersigned acknowledges that each such attorney-in-fact is serving in such capacity at the request of the undersigned, and is not assuming, nor is the Company assuming, any of the undersigned's responsibilities to comply with Section 16 of the Exchange Act.

&nbsp;&nbsp;&nbsp;&nbsp;The Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file any Section 16 Forms with respect to the undersigned's holdings of and transactions in securities issued by the Company, unless earlier revoked by the undersigned in a signed writing delivered to each such attorney-in-fact.

&nbsp;&nbsp;&nbsp;&nbsp;From and after the date hereof, any Power of Attorney previously granted by the undersigned concerning the subject matter hereof is hereby revoked.

&nbsp;&nbsp;&nbsp;&nbsp;IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed effective as of August 25, 2025.

By: /s/ Carla Harper

Name: Carla Harper

Title: Senior Vice President, Human Resources

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

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Harper Carla D<br><sub>(Last) (First) (Middle)</sub><br>C/O CORE & MAIN, INC.<br>1830 CRAIG PARK COURT<br><sub>(Street)</sub><br>ST. LOUIS, MO 63146<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>Core & Main, Inc. [ CNM ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2025-09-03 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [ ] 10% Owner<br>[X] Officer (give title below)   [ ] Other (specify below)<br>_Senior VP, Human Resources_ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |
| Class A  Common  Stock | 9675<sup>(1)</sup> | D |  |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| Options (Rights to Buy) | <sup>(2)</sup> | 2032-03-11 | Class A  Common  Stock | 2568 | $20.81 | D |  |
| Options (Rights to Buy) | <sup>(3)</sup> | 2033-03-10 | Class A  Common  Stock | 3891 | $22.11 | D |  |
| Options (Rights to Buy) | <sup>(4)</sup> | 2034-03-07 | Class A  Common  Stock | 4506 | $50.12 | D |  |
| Options (Rights to Buy) | <sup>(5)</sup> | 2035-03-13 | Class A  Common  Stock | 4839 | $46.27 | D |  |

---

### Footnotes:

(1) The total includes 889 shares of Class A common stock of the Issuer ("Class A common stock") and 8,786 restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock. The unvested portion of the RSUs granted on August 31, 2021 vest on June 23, 2026. The unvested portion of the RSUs granted on March 10, 2023 vest on March 10, 2026. The unvested portion of the RSUs granted on March 7, 2024 vest in two equal installments on March 7, 2026 and March 7, 2027. The unvested portion of the RSUs granted on March 13, 2025 vest in three equal installments on March 11, 2026, March 11, 2027 and March 11, 2028. All RSU vesting is subject to the terms of the associated Participant Restricted Stock Unit Agreement.

(2) The options are fully vested.

(3) 2,594 options are currently vested. The remaining options vest on March 10, 2026, subject to the terms of the associated Participant Stock Option Agreement.

(4) 1,502 options are currently vested. The remaining options vest in two equal installments on March 7, 2026 and March 7, 2027, subject to the terms of the associated Participant Stock Option Agreement.

(5) The options vest in three equal installments on March 11, 2026, March 11, 2027 and March 11, 2028, subject to the terms of the associated Participant Stock Option Agreement.

**Remarks:**
Exhibit list: Ex. 24 - Power of Attorney

**Signature:** /s/ Mark Whittenburg, as Attorney-in-Fact for Carla D. Harper  
**Date:** 2025-09-05

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**