[Form 4] Builders FirstSource, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Builders FirstSource director William B. Hayes acquired 279 shares of common stock on 09/01/2025 at a reported price of $138.68 per share as stock-in-lieu of cash compensation under the companys 2014 Incentive Plan and Amended and Restated Director Compensation Policy. After the transaction, Mr. Hayes directly holds 15,856 shares and indirectly holds 14,593 shares through a Spousal Lifetime Access Trust, reflecting his combined beneficial ownership reported on Form 4. The Form 4 was signed by a power of attorney on 09/03/2025 and discloses routine director compensation in equity rather than a cash payout.

Positive

• Director compensation paid in equity aligns management incentives with shareholders by increasing insider share ownership
• Clear disclosure of direct and indirect holdings (15,856 direct; 14,593 indirect via Spousal Lifetime Access Trust) improves transparency

Negative

• None.

Insights

Corporate Governance Expert

TL;DR: Director received equity in lieu of cash; ownership disclosures align with routine compensation practices and trust holdings.

The filing documents a standard director equity grant converted from cash compensation, which is a common governance practice to align director incentives with shareholder value. The direct holding of 15,856 shares plus 14,593 shares held indirectly via a Spousal Lifetime Access Trust indicates meaningful personal alignment without revealing control changes. There are no derivative transactions or disposals reported, and the reported price of $138.68 per share simply reflects the valuation of the shares received. This Form 4 does not indicate any change in board composition or extraordinary governance actions.

Securities Analyst

TL;DR: Transaction is routine and immaterial to company capitalization; it represents director compensation, not market-moving insider trading.

The acquisition of 279 shares as compensation is small relative to typical public-company float and therefore unlikely to affect share supply or market dynamics. The report clearly separates direct and indirect holdings, showing transparency in beneficial ownership. No sales, option exercises, or derivative instruments were reported, indicating no liquidity event by the insider. Investors seeking material changes to ownership should note that this filing documents routine compensation, not a strategic stake change.

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)
09/01/2025

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	09/01/2025		A(1)		279	A	$138.68	15,856	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	09/03/2025
	** 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 did BLDR director William B. Hayes report on Form 4?

He reported acquiring 279 shares of Builders FirstSource common stock on 09/01/2025 at a reported price of $138.68 per share as equity in lieu of cash compensation.

How many BLDR shares does William B. Hayes beneficially own after the transaction?

The Form 4 shows 15,856 shares directly and 14,593 shares indirectly through a Spousal Lifetime Access Trust.

Was the Form 4 filed jointly or by a single reporting person?

The filing indicates it was submitted by one reporting person (Form filed by One Reporting Person).

Why were the shares acquired according to the filing?

The filing states the shares were acquired in lieu of cash compensation for director services under the 2014 Incentive Plan pursuant to the companys Amended and Restated Director Compensation Policy.

Were any derivative securities or sales reported in this Form 4?

No derivative securities, sales, or disposals are reported in the provided Form 4; only a non-derivative acquisition is listed.