Director at Builders FirstSource (NYSE: BLDR) granted 2,558 RSUs

Rhea-AI Filing Summary

Builders FirstSource, Inc. director Paul S. Levy reported an equity award under the company’s 2014 Incentive Plan. On May 14, 2026, he received 2,558 restricted stock units at no cash cost. These units vest on May 14, 2027 and convert into one share of common stock each. Following this grant, Levy directly holds 1,729,749 shares of Builders FirstSource common stock. This is a compensation-related award rather than an open-market share purchase or sale.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider LEVY PAUL S

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock, par value $0.01 per share	2,558	$0.00	--

Holdings After Transaction: Common Stock, par value $0.01 per share — 1,729,749 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

RSUs granted: 2,558 units Grant price: $0.00 per unit Post-transaction holdings: 1,729,749 shares +1 more

4 metrics

RSUs granted 2,558 units Restricted stock units granted May 14, 2026

Grant price $0.00 per unit Equity award with no cash consideration

Post-transaction holdings 1,729,749 shares Total common shares directly held after grant

Vesting date May 14, 2027 RSUs convert to one share each at vesting

Key Terms

restricted stock units, 2014 Incentive Plan, vest, grant/award acquisition

4 terms

restricted stock units financial

"Reflects the acquisition of restricted stock units pursuant to the Corporation's 2014 Incentive Plan."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

2014 Incentive Plan financial

"Reflects the acquisition of restricted stock units pursuant to the Corporation's 2014 Incentive Plan."

vest financial

"The restricted stock units vest on May 14, 2027 and entitle the reporting person to one share of common stock for each restricted stock unit that vests."

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

grant/award acquisition financial

"transaction_action: grant/award acquisition, transaction_code_description: Grant, award, or other acquisition"

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 FLORIDA 33408

(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)
05/14/2026

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	05/14/2026		A		2,558(1)	A	$0	1,729,749	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 the acquisition of restricted stock units pursuant to the Corporation's 2014 Incentive Plan. The restricted stock units vest on May 14, 2027 and entitle the reporting person to one share of common stock for each restricted stock unit that vests.

	/s/ Minator Azemi, by power of attorney	05/18/2026
	** 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 did Paul S. Levy report in this Form 4 for Builders FirstSource (BLDR)?

Paul S. Levy reported receiving 2,558 restricted stock units as an equity award. The grant was made under Builders FirstSource’s 2014 Incentive Plan and did not involve any cash payment, reflecting routine director compensation rather than an open-market stock transaction.

When do Paul S. Levy’s new Builders FirstSource restricted stock units vest?

The 2,558 restricted stock units granted to Paul S. Levy vest on May 14, 2027. Once vested, each unit entitles him to receive one share of Builders FirstSource common stock, turning this award into actual share ownership at that time.

How many Builders FirstSource shares does Paul S. Levy hold after this transaction?

After this equity award, Paul S. Levy directly holds 1,729,749 shares of Builders FirstSource common stock. This total includes his prior holdings plus the newly granted restricted stock units that will convert into shares once they vest in 2027.

Did Paul S. Levy buy or sell Builders FirstSource shares on the open market?

He did not buy or sell shares on the open market in this filing. Instead, he received 2,558 restricted stock units as a grant with a zero dollar price, which are part of his director compensation under the company’s 2014 Incentive Plan.

What is the nature of the equity award reported by Paul S. Levy at BLDR?

The award consists of 2,558 restricted stock units granted for no cash consideration. These RSUs were issued under Builders FirstSource’s 2014 Incentive Plan and will vest on May 14, 2027, each converting into one share of common stock upon vesting.