Director Maria Renz receives 311 BLDR shares as stock compensation

Rhea-AI Filing Summary

Builders FirstSource director Maria Renz acquired 311 shares of common stock on March 1, 2026 through a grant in lieu of cash compensation. The award, issued at $104.29 per share under the company’s 2014 Incentive Plan and Director Compensation Policy, brings her direct holdings to 3,397 shares.

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

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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^*

Renz Maria

(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)
03/01/2026

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	03/01/2026		A(1)		311	A	$104.29	3,397	D

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	03/03/2026
	** 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).
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FAQ

What insider transaction did Builders FirstSource (BLDR) director Maria Renz report?

Director Maria Renz reported acquiring 311 shares of Builders FirstSource common stock. The shares were granted as compensation for board service, rather than paid in cash, under the company’s 2014 Incentive Plan and its Amended and Restated Director Compensation Policy.

On what date did Maria Renz receive the Builders FirstSource (BLDR) stock grant?

Maria Renz received the stock grant on March 1, 2026. The Form 4 shows this as the transaction date for the 311-share award, which was issued as non-cash compensation for her services as a director under the company’s established incentive and compensation programs.

How many Builders FirstSource (BLDR) shares does Maria Renz own after this grant?

Following the grant, Maria Renz directly owns 3,397 shares of Builders FirstSource common stock. The Form 4 explicitly states the total shares beneficially owned after the transaction, reflecting the addition of 311 shares acquired as director compensation in stock form.

What was the price per share for Maria Renz’s Builders FirstSource (BLDR) stock award?

The stock award to Maria Renz was valued at $104.29 per share. This per-share value is listed in the Form 4 for the 311-share grant, which she received as an equity-based alternative to cash compensation for her role on the company’s board.

Was Maria Renz’s Builders FirstSource (BLDR) transaction a purchase on the open market?

No, Maria Renz’s transaction was an acquisition by grant, not an open-market purchase. The Form 4 uses transaction code "A" and notes the shares were received in lieu of cash compensation under the company’s 2014 Incentive Plan and director compensation policy.