Bradford A. Cowles - 11 Mar 2026 Form 4 Insider Report for Core & Main, Inc. (CNM)

Role: President
Signature: /s/ Mark Whittenburg, as Attorney-in-Fact for Bradford A. Cowles
Issuer symbol: CNM
Transactions as of: 11 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 13 Mar 2026, 19:24:00 UTC
Previous filing: 11 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Cowles Bradford A	President	C/O CORE & MAIN, INC., 1830 CRAIG PARK COURT, ST. LOUIS	/s/ Mark Whittenburg, as Attorney-in-Fact for Bradford A. Cowles	13 Mar 2026	0001866531

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CNM	Class A Common Stock	Tax liability		-607	-3.2%	$49.16^*	18,405	11 Mar 2026	Direct	F1
transaction	CNM	Class A Common Stock	Award		+7,086	+39%	$0.000000^*	25,491	12 Mar 2026	Direct	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	CNM	Options (Rights to Buy)	Award		+50,676		$0.000000^*	50,676	12 Mar 2026	Class A Common Stock	50,676	$47.63	Direct	F3

* 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 ("RSUs") granted to the reporting person.
F2	Represents RSUs granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock of the Issuer. The RSUs vest in three equal annual installments on March 11, 2027, March 11, 2028 and March 11, 2029, subject to the terms of the associated Participant Restricted Stock Unit Agreement.
F3	The options vest in three equal installments on March 11, 2027, March 11, 2028 and March 11, 2029, subject to the terms of the associated Participant Stock Option Agreement.