Builders FirstSource director granted 2,558 RSUs

Builders FirstSource director James O’Leary received a new equity award.

Rhea-AI Filing Summary

Builders FirstSource director James O’Leary received a new equity award. On May 14, 2026, he was granted 2,558 restricted stock units under the company’s 2014 Incentive Plan at no cash cost.

The units vest on May 14, 2027 and will convert into one share of common stock each upon vesting. After this grant, O’Leary directly holds 90,740 shares of Builders FirstSource common stock, reflecting his ongoing equity-based compensation and ownership stake as a director.

Insider Trade Summary

Grant/Award: 2,558 shares

Grant/Award 1 txn

Insider OLEARY JAMES

Role Director

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

Holdings After Transaction: Common Stock, par value $0.01 per share — 90,740 shares (Direct)

Footnotes (1)

1. F1. 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.

Key Figures

RSUs granted: 2,558 units Grant price: $0.00 per share Shares after transaction: 90,740 shares +1 more

4 metrics

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

Grant price $0.00 per share Reported transaction price per share for RSU grant

Shares after transaction 90,740 shares Common stock directly held after the grant

Vesting date May 14, 2027 Date when RSUs vest into common shares

Key Terms

restricted stock units, 2014 Incentive Plan, vest

3 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.

FAQ

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

What insider transaction did BLDR director James O’Leary report on this Form 4?

James O’Leary reported receiving an equity award of 2,558 restricted stock units of Builders FirstSource common stock. The award was granted at no cash cost as part of the company’s 2014 Incentive Plan and represents compensation rather than an open-market share purchase.

How many Builders FirstSource (BLDR) restricted stock units did James O’Leary receive?

James O’Leary received 2,558 restricted stock units tied to Builders FirstSource common stock. Each unit entitles him to one share when it vests, giving him the right to receive 2,558 additional shares if the vesting conditions are satisfied on the scheduled vesting date.

When do James O’Leary’s newly granted BLDR restricted stock units vest?

The restricted stock units granted to James O’Leary vest on May 14, 2027. At that time, each vested unit will convert into one share of Builders FirstSource common stock, assuming he meets the vesting requirements set by the company’s 2014 Incentive Plan.

How many Builders FirstSource (BLDR) shares does James O’Leary hold after this Form 4 transaction?

Following this grant, James O’Leary directly holds 90,740 shares of Builders FirstSource common stock. This figure reflects his ownership after accounting for the 2,558 restricted stock units reported, highlighting his ongoing equity stake as a board member of the company.

Was James O’Leary’s BLDR Form 4 transaction a market purchase or a compensation grant?

The Form 4 shows a compensation-related grant, not a market purchase. James O’Leary acquired 2,558 restricted stock units at a reported price of $0.00 per share under the 2014 Incentive Plan, consistent with typical director equity awards rather than open-market buying activity.

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

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Accepted by SEC EDGAR 05/18/2026 - 04:30 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^*

OLEARY JAMES

(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)
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	90,740	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)