BLDR director receives 409-share stock award

Charles Dirkson R reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Charles Dirkson R reported acquisition or exercise transactions in this Form 4 filing.

Builders FirstSource director Charles Dirkson R received a grant of 409 shares of common stock at $76.26 per share as compensation for board service. The shares were issued in lieu of cash under the company’s 2026 Incentive Plan and Amended and Restated Director Compensation Policy. Following this award, he holds 14,296 shares directly and 5,000 shares indirectly through a trust.

Insider Trade Summary

Grant/Award: 409 shares

Grant/Award 2 txns

Insider Charles Dirkson R

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock, par value $0.01 per share	409	$76.26	$31K
holding	Common Stock, par value $0.01 per share	--	--	--

Holdings After Transaction: Common Stock, par value $0.01 per share — 14,296 shares (Direct); Common Stock, par value $0.01 per share — 5,000 shares (Indirect, By trust)

Footnotes (1)

1. F1. 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.

Key Figures

Stock award size: 409 shares Award price per share: $76.26 per share Direct holdings after award: 14,296 shares +1 more

4 metrics

Stock award size 409 shares Grant, award, or other acquisition for director compensation

Award price per share $76.26 per share Valuation used for the 409-share equity grant

Direct holdings after award 14,296 shares Common stock directly owned after the transaction

Indirect holdings by trust 5,000 shares Common stock held indirectly by trust

Key Terms

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

4 terms

Grant, award, or other acquisition financial

"transaction_code_description: Grant, award, or other acquisition"

2026 Incentive Plan financial

"acquisition of shares in lieu of cash compensation for services as a director under the Corporation's 2026 Incentive Plan"

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"

Common Stock, par value $0.01 per share financial

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

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Builders FirstSource (BLDR) report for Charles Dirkson R?

Builders FirstSource reported that director Charles Dirkson R received a grant of 409 shares of common stock. The shares were issued as compensation for board service rather than bought on the open market, reflecting routine, plan-based equity compensation.

At what price were the Builders FirstSource (BLDR) shares granted to Charles Dirkson R?

The 409 Builders FirstSource shares granted to Charles Dirkson R were valued at $76.26 per share. This price is used for the stock award calculation under the company’s equity plan and does not represent an open-market purchase by the director.

How many Builders FirstSource (BLDR) shares does Charles Dirkson R own after this Form 4?

After the reported award, Charles Dirkson R holds 14,296 Builders FirstSource shares directly. The Form 4 also shows 5,000 additional shares held indirectly through a trust, providing a view of both his direct and indirect ownership positions.

Was the Builders FirstSource (BLDR) share grant to Charles Dirkson R a market purchase?

No, the 409-share grant to Charles Dirkson R was not a market purchase. It was an equity award received in lieu of cash fees for director services, under the company’s 2026 Incentive Plan and its Amended and Restated Director Compensation Policy.

What plan governed the Builders FirstSource (BLDR) stock award to Charles Dirkson R?

The stock award was granted under Builders FirstSource’s 2026 Incentive Plan. A footnote explains the shares were issued in lieu of cash compensation pursuant to the company’s Amended and Restated Director Compensation Policy for services as a director.

How is indirect ownership reported for Builders FirstSource (BLDR) director Charles Dirkson R?

The Form 4 shows 5,000 Builders FirstSource shares held indirectly by a trust for Charles Dirkson R. This indirect entry is separate from his 14,296 directly held shares, clarifying that a portion of his stake is managed through a trust structure.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/02/2026 - 04:05 PM EDT Learn about SEC filing dates

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 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)		409	A	$76.26	14,296	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 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)