Mark A. Alexander - 01 Jun 2025 Form 4 Insider Report for Builders FirstSource, Inc. (BLDR)

Role: Director
Signature: /s/ Minator Azemi, by power of attorney
Issuer symbol: BLDR
Transactions as of: 01 Jun 2025
Transactions value $: $31,227
Form type: 4
Filing time: 03 Jun 2025, 16:05:25 UTC
Previous filing: 29 May 2025
Next filing: 02 Jul 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
ALEXANDER MARK A	Director	C/O BUILDERS FIRSTSOURCE, INC., 6031 CONNECTION DR., STE. 400, IRVING	/s/ Minator Azemi, by power of attorney	03 Jun 2025	0001212607

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BLDR	Common Stock, par value $0.01 per share	Award	$31.2K	+290	+0.66%	$107.68	44.1K	01 Jun 2025	Direct	F1

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

Explanation of Responses:

Id	Content
F1	Reflects acquisition of shares in lieu of cash compensation for services as a director under the Corporation's 2014 Incentive Plan pursuant to the Corporation's Amended and Restated Director Compensation Policy.