Builders FirstSource (BLDR) director acquires 345 shares via equity compensation grant

Rhea-AI Filing Summary

Builders FirstSource, Inc. director received additional company stock as part of board compensation. On 12/01/2025, the director acquired 345 shares of common stock at $112.23 per share, taken in stock instead of cash under the company’s 2014 Incentive Plan and Amended and Restated Director Compensation Policy. Following this transaction, the director beneficially owned 16,201 shares directly and 14,593 shares indirectly through a Spousal Lifetime Access Trust.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Hayes William B

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock, par value $0.01 per share	345	$112.23	$39K
holding	Common Stock, par value $0.01 per share	--	--	--

Holdings After Transaction: Common Stock, par value $0.01 per share — 16,201 shares (Direct); Common Stock, par value $0.01 per share — 14,593 shares (Indirect, By Spousal Lifetime Access Trust)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Hayes William B

(Last) (First) (Middle)

C/O BUILDERS FIRSTSOURCE, INC.

6031 CONNECTION DR., STE. 400

(Street)

IRVING TX 75039

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Builders FirstSource, Inc. [ BLDR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
12/01/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $0.01 per share	12/01/2025		A(1)		345	A	$112.23	16,201	D
Common Stock, par value $0.01 per share								14,593	I	By Spousal Lifetime Access Trust

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

	/s/ Minator Azemi, by power of attorney	12/03/2025
	** Signature of Reporting Person	Date
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.

FAQ

What insider transaction did Builders FirstSource (BLDR) report in this Form 4?

A director of Builders FirstSource, Inc. reported acquiring 345 shares of common stock on 12/01/2025 as part of director compensation.

At what price were the Builders FirstSource (BLDR) shares acquired by the director?

The director acquired 345 shares of Builders FirstSource common stock at a price of $112.23 per share.

How many Builders FirstSource (BLDR) shares does the director own after this transaction?

After the transaction, the director beneficially owned 16,201 shares directly and 14,593 shares indirectly through a Spousal Lifetime Access Trust.

Why did the Builders FirstSource (BLDR) director receive shares instead of cash?

The 345 shares were received in lieu of cash compensation for services as a director under the company’s 2014 Incentive Plan and Amended and Restated Director Compensation Policy.

What is the director’s relationship to Builders FirstSource (BLDR)?

The reporting person serves as a director of Builders FirstSource, Inc. and filed the Form 4 as a single reporting person.

How are some of the Builders FirstSource (BLDR) shares held by the director structured?

In addition to directly held shares, the director holds 14,593 shares indirectly through a Spousal Lifetime Access Trust.