Builders FirstSource (BLDR) CFO receives stock units, shares withheld for tax

Rhea-AI Filing Summary

Builders FirstSource EVP & CFO Pete Beckmann reported equity compensation grants and related tax withholding. He received awards of common stock and restricted stock units under the corporation's 2014 Incentive Plan, including restricted stock units that vest in 33.3% increments on each of March 15, 2027, 2028, and 2029, with each vested unit converting into one common share.

The filing also shows shares withheld to cover tax obligations when previously granted performance-based and time-based restricted stock units vested. For direct holdings, 1,966 shares were withheld at $88.09 per share, leaving 38,266 common shares directly owned after these transactions. For indirect holdings by his spouse, 1,873 shares were withheld at $88.09 per share, leaving 43,259 common shares held indirectly.

Insider Trade Summary

Net Buyer: 14,554 shares

Net Buy 6 txns

Insider Beckmann Pete

Role EVP & CFO

Type	Security	Shares	Price	Value
Grant/Award	Common Stock, par value $0.01 per share	11,352	$0.00	$0.00
Grant/Award	Common Stock, par value $0.01 per share	1,398	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock, par value $0.01 per share	1,966	$88.09	$173K
Grant/Award	Common Stock, par value $0.01 per share	3,406	$0.00	$0.00
Grant/Award	Common Stock, par value $0.01 per share	2,237	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock, par value $0.01 per share	1,873	$88.09	$165K

Holdings After Transaction: Common Stock, par value $0.01 per share — 38,266 shares (Direct); Common Stock, par value $0.01 per share — 43,259 shares (Indirect, By spouse)

Footnotes (3)

1. F1. Reflects the acquisition of restricted stock units pursuant to the Corporation's 2014 Incentive Plan. The restricted stock units vest in 33.3% increments on each of March 15, 2027-2029 and entitle the reporting person to one share of common stock for each restricted stock unit that vests.
2. F2. Reflects the vesting of performance-based restricted stock units granted pursuant to the Corporation's 2014 Incentive Plan.
3. F3. Reflects shares withheld to pay tax withholding requirements on vesting of previously granted performance-based restricted stock units and restricted stock units.

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 03/17/2026 - 07:05 PM Learn about SEC filing dates

FAQ

What did BLDR CFO Pete Beckmann report in this Form 4?

He reported equity compensation activity, including grants of common stock and restricted stock units under the 2014 Incentive Plan and share withholding to cover tax obligations on vesting awards, rather than any open-market stock purchases or sales.

How do the new BLDR restricted stock units for the CFO vest?

The newly reported restricted stock units for Pete Beckmann vest in 33.3% increments on each of March 15, 2027, March 15, 2028, and March 15, 2029, with each vested unit converting into one share of Builders FirstSource common stock.

Were any Builders FirstSource shares sold on the market in this Form 4?

No open-market sales were reported. The only share reductions were tax-withholding dispositions, where 1,966 directly held shares and 1,873 spouse-held shares were withheld at $88.09 per share to satisfy tax liabilities on vesting stock units.

What are Pete Beckmann’s direct BLDR share holdings after these transactions?

After the reported grants and tax-withholding dispositions, Pete Beckmann is shown as directly owning 38,266 shares of Builders FirstSource common stock, according to the post-transaction share balance in the Form 4 disclosure.

How many BLDR shares are reported as indirectly owned by the CFO’s spouse?

Following the spouse-related grants and tax-withholding dispositions, the Form 4 shows 43,259 shares of Builders FirstSource common stock held indirectly through the CFO’s spouse, as indicated in the indirect ownership entries.

What do the tax-withholding entries mean in this BLDR Form 4?

The tax-withholding entries reflect shares surrendered back to the company, not market sales. They show 3,839 total shares delivered at $88.09 per share to pay taxes due when previously granted restricted and performance-based stock units vested.

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^*

Beckmann Pete

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & CFO

3. Date of Earliest Transaction (Month/Day/Year)
03/15/2026

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	03/15/2026		A(1)		11,352	A	$0.00	38,834	D
Common Stock, par value $0.01 per share	03/15/2026		A(2)		1,398	A	$0.00	40,232	D
Common Stock, par value $0.01 per share	03/15/2026		F(3)		1,966	D	$88.09	38,266	D
Common Stock, par value $0.01 per share	03/15/2026		A(1)		3,406	A	$0.00	42,895	I	By spouse
Common Stock, par value $0.01 per share	03/15/2026		A(2)		2,237	A	$0.00	45,132	I	By spouse
Common Stock, par value $0.01 per share	03/15/2026		F(3)		1,873	D	$88.09	43,259	I	By spouse

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 the acquisition of restricted stock units pursuant to the Corporation's 2014 Incentive Plan. The restricted stock units vest in 33.3% increments on each of March 15, 2027-2029 and entitle the reporting person to one share of common stock for each restricted stock unit that vests.

2. Reflects the vesting of performance-based restricted stock units granted pursuant to the Corporation's 2014 Incentive Plan.

3. Reflects shares withheld to pay tax withholding requirements on vesting of previously granted performance-based restricted stock units and restricted stock units.

	/s/ Minator Azemi, by power of attorney	03/17/2026
	** 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.
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