Stock grant boosts Builders FirstSource (BLDR) director share holdings

Rhea-AI Filing Summary

Builders FirstSource, Inc. reported that director Maria Renz received a stock award of 426 shares of common stock, valued at $76.26 per share. The shares were granted in lieu of cash compensation under the company’s 2026 Incentive Plan and Amended and Restated Director Compensation Policy.

Following this grant, Renz directly holds 6,381 shares of Builders FirstSource common stock. This is a compensation-related acquisition, not an open-market share purchase.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Renz Maria

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock, par value $0.01 per share	426	$76.26	$32K

Holdings After Transaction: Common Stock, par value $0.01 per share — 6,381 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Stock grant size: 426 shares Grant value per share: $76.26 per share Shares owned after grant: 6,381 shares +2 more

5 metrics

Stock grant size 426 shares Common Stock awarded to director Maria Renz

Grant value per share $76.26 per share Value used for the June 1, 2026 stock award

Shares owned after grant 6,381 shares Maria Renz’s direct holdings following the award

Transaction code A (grant, award, or other acquisition) Non-derivative Common Stock transaction classification

Ownership type Direct (code D) Direct ownership of granted common shares

Key Terms

2026 Incentive Plan, Amended and Restated Director Compensation Policy, grant/award acquisition, Common Stock, par value $0.01 per share

4 terms

2026 Incentive Plan financial

"under the Corporation's 2026 Incentive Plan pursuant to the Corporation's Amended"

A 2026 incentive plan is a company’s formal program, often named for a year, that authorizes awards like stock options, restricted shares, and cash bonuses to employees and executives to motivate performance and retain talent. For investors it matters because the plan creates potential new shares or payouts that can dilute existing ownership and align management’s choices with company goals—think of it as a reward budget that affects both pay incentives and share value.

Amended and Restated Director Compensation Policy financial

"pursuant to the Corporation's Amended and Restated Director Compensation Policy"

grant/award acquisition financial

"transaction_action": "grant/award acquisition""

Common Stock, par value $0.01 per share financial

"security_title": "Common Stock, par value $0.01 per share""

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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^*

Renz Maria

(Last) (First) (Middle)

C/O BUILDERS FIRSTSOURCE, INC.

6031 CONNECTION DR., STE. 400

(Street)

IRVING TEXAS 75039

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026

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

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

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

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	06/01/2026		A(1)		426	A	$76.26	6,381	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 2026 Incentive Plan pursuant to the Corporation's Amended and Restated Director Compensation Policy.

	/s/ Minator Azemi, by power of attorney	06/02/2026
	** 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).
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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Builders FirstSource (BLDR) disclose for Maria Renz?

Builders FirstSource disclosed that director Maria Renz received a grant of 426 shares of common stock. The award was issued as compensation in stock rather than cash, under the company’s 2026 Incentive Plan and its Amended and Restated Director Compensation Policy.

Was Maria Renz’s Builders FirstSource (BLDR) transaction a purchase or a stock grant?

The transaction was a stock grant, not an open-market purchase. Maria Renz acquired 426 shares as a compensation award under the 2026 Incentive Plan, consistent with the company’s Amended and Restated Director Compensation Policy for director services.

At what price was the Builders FirstSource (BLDR) stock award to Maria Renz valued?

The 426-share award to Maria Renz was valued at $76.26 per share. This price reflects the grant-date value used for compensation purposes under Builders FirstSource’s 2026 Incentive Plan and its director compensation framework.

How many Builders FirstSource (BLDR) shares does Maria Renz hold after the grant?

After receiving the 426-share stock grant, Maria Renz directly holds 6,381 shares of Builders FirstSource common stock. This total represents her reported direct ownership following the compensation-related acquisition disclosed in the Form 4 filing.

What plan governed the Builders FirstSource (BLDR) stock grant to Maria Renz?

The stock grant to Maria Renz was made under Builders FirstSource’s 2026 Incentive Plan. It was provided pursuant to the company’s Amended and Restated Director Compensation Policy, which allows directors to receive shares in lieu of cash compensation for their board service.