Builders FirstSource (BLDR) director adds 50,000 shares in open-market buy

Rhea-AI Filing Summary

Builders FirstSource, Inc. director Paul S. Levy reported an open-market purchase of common stock. On March 13, 2026, he bought 50,000 shares at an average price of $87.73 per share. Following this transaction, his direct holdings total 1,727,191 shares of Builders FirstSource common stock.

Insider Trade Summary

Net Buyer: 50,000 shares ($4,386,500)

Net Buy 1 txn

Insider LEVY PAUL S

Role Director

Bought 50,000 shs ($4.39M)

Type	Security	Shares	Price	Value
Purchase	Common Stock, par value $0.01 per share	50,000	$87.73	$4.39M

Holdings After Transaction: Common Stock, par value $0.01 per share — 1,727,191 shares (Direct)

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^*

LEVY PAUL S

(Last) (First) (Middle)

440 ROYAL PALM WAY, SUITE 206

(Street)

PALM BEACH FL 33408

(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)
03/13/2026

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	03/13/2026		P		50,000	A	$87.73(1)	1,727,191	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. This transaction was executed in multiple open market purchases at an average price of $87.73 per share.

	/s/ Minator Azemi, by power of attorney	03/16/2026
	** 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.

FAQ

What insider transaction did Builders FirstSource (BLDR) report for Paul S. Levy?

Builders FirstSource director Paul S. Levy reported buying 50,000 common shares in the open market. The Form 4 shows this purchase occurred on March 13, 2026, as a non-derivative transaction classified as an open-market or private purchase.

At what price did Paul S. Levy buy Builders FirstSource (BLDR) shares?

Paul S. Levy purchased Builders FirstSource common stock at an average price of $87.73 per share. The filing notes this was executed through multiple open-market purchases that together produced this average transaction price.

How many Builders FirstSource (BLDR) shares does Paul S. Levy own after this trade?

After the reported purchase, Paul S. Levy directly owns 1,727,191 shares of Builders FirstSource common stock. This total reflects his holdings immediately following the 50,000-share open-market acquisition disclosed in the Form 4.

Was the Builders FirstSource (BLDR) transaction by Paul S. Levy a buy or a sell?

The transaction was a buy. The Form 4 lists code “P,” meaning an open-market or private purchase, and classifies the direction as a net buy of 50,000 shares of Builders FirstSource common stock.

Did the Builders FirstSource (BLDR) Form 4 involve any stock options or derivatives?

No, the reported transaction involved only common stock, not options or other derivatives. The filing classifies it as a non-derivative transaction and shows no remaining derivative positions in the derivative summary.