Robyn L. Bradbury - 09 Mar 2026 Form 4 Insider Report for Core & Main, Inc. (CNM)

Role: Chief Financial Officer
Signature: /s/ Mark Whittenburg, as Attorney-in-Fact for Robyn L. Bradbury
Issuer symbol: CNM
Transactions as of: 09 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 11 Mar 2026, 17:10:26 UTC
Previous filing: 23 Jul 2025
Next filing: 13 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Bradbury Robyn L	Chief Financial Officer	C/O CORE & MAIN, INC., 1830 CRAIG PARK COURT, ST. LOUIS	/s/ Mark Whittenburg, as Attorney-in-Fact for Robyn L. Bradbury	11 Mar 2026	0002060011

Transactions Table

Type	Sym	Class	Transaction	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CNM	Class A Common Stock	Tax liability	-270	-3.2%	$49.96^*	8,285	09 Mar 2026	Direct	F1
transaction	CNM	Class A Common Stock	Tax liability	-205	-2.5%	$49.38^*	8,080	10 Mar 2026	Direct	F1
holding	CNM	Class A Common Stock					22	09 Mar 2026	By LLC	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents shares withheld by the Issuer for tax withholding purposes upon the vesting of a portion of restricted stock units granted to the reporting person.
F2	Represents securities held by Core & Main Management Feeder, LLC ("Management Feeder") in respect of common units ("Units") of Management Feeder held directly by the reporting person. Pursuant to the Fourth Amended and Restated LLC Agreement of Management Feeder, dated as of February 13, 2024, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for shares of Class A common stock, on a one-for-one basis.

Content

Represents shares withheld by the Issuer for tax withholding purposes upon the vesting of a portion of restricted stock units granted to the reporting person.

Represents securities held by Core & Main Management Feeder, LLC ("Management Feeder") in respect of common units ("Units") of Management Feeder held directly by the reporting person. Pursuant to the Fourth Amended and Restated LLC Agreement of Management Feeder, dated as of February 13, 2024, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for shares of Class A common stock, on a one-for-one basis.