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

Rhea-AI Filing Summary

Charles Dirkson R, a director of Builders FirstSource, Inc. (BLDR), acquired 225 shares of common stock on 09/01/2025 at a reported price of $138.68 per share. The filing states the shares were received in lieu of cash compensation under the company's 2014 Incentive Plan and Amended and Restated Director Compensation Policy. After the transaction, Mr. Dirkson beneficially owns 10,752 shares directly and 5,000 shares indirectly through a trust. The Form 4 was signed by a power of attorney on 09/03/2025.

Insights

Financial Analyst

TL;DR: Routine director equity grant; small share acquisition aligns interests but is not materially transformative.

The filing documents a common, non-derivative acquisition of 225 shares as compensation for board services, valued at approximately $31, its price indicating current market valuation for director equity. The incremental holding increases the director's stake but remains immaterial relative to typical public company float. No cash purchase or option exercise occurred and no debt/equity restructuring is indicated. Impact to valuation or control is negligible.

Corporate Governance Expert

TL;DR: Standard governance practice: stock-in-lieu payments maintain alignment between director and shareholders.

Receiving shares in lieu of cash under the board compensation policy is a common mechanism to align director incentives with shareholder outcomes. The disclosure clearly states form and nature of ownership (direct and trust-held indirect). The filing contains required details and was executed by power of attorney, which is acceptable for administrative filings. There are no governance red flags disclosed.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Charles Dirkson R

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock, par value $0.01 per share	225	$138.68	$31K
holding	Common Stock, par value $0.01 per share	--	--	--

Holdings After Transaction: Common Stock, par value $0.01 per share — 10,752 shares (Direct); Common Stock, par value $0.01 per share — 5,000 shares (Indirect, By 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^*

Charles Dirkson R

(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)		225	A	$138.68	10,752	D
Common Stock, par value $0.01 per share								5,000	I	By 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.
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