Director at Builders FirstSource (NYSE: BLDR) receives 2,558 restricted stock units

Rhea-AI Filing Summary

Builders FirstSource director Cory Jacobs Boydston reported a compensation-related award of restricted stock units. He acquired 2,558 RSUs on common stock at no cash cost under the company’s 2014 Incentive Plan. These units vest on May 14, 2027 and convert into one share each upon vesting.

Following this grant, Boydston directly holds 26,312 shares or share-equivalent units in total. Because this is an equity award rather than an open-market purchase or sale, it reflects routine director compensation rather than an active trading decision.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Boydston Cory Jacobs

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 — 26,312 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

RSUs granted: 2,558 units Grant price: $0.00 per share Holdings after grant: 26,312 shares +1 more

4 metrics

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

Grant price $0.00 per share Equity award, no cash paid by director

Holdings after grant 26,312 shares Total direct ownership following RSU award

Vesting date May 14, 2027 RSUs vest and convert into common shares on this date

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.

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^*

Boydston Cory Jacobs

(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	26,312	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 insider transaction did Builders FirstSource (BLDR) report for Cory Jacobs Boydston?

Builders FirstSource reported a grant of restricted stock units to director Cory Jacobs Boydston. He received 2,558 RSUs as equity compensation, not through an open-market trade, under the company’s 2014 Incentive Plan, increasing his total direct holdings to 26,312 shares or equivalents.

How many Builders FirstSource (BLDR) shares did Cory Jacobs Boydston effectively acquire?

Cory Jacobs Boydston effectively acquired 2,558 share-equivalent restricted stock units. Each RSU represents the right to receive one share of Builders FirstSource common stock when it vests, increasing his direct ownership position as part of his director compensation package.

When do Cory Jacobs Boydston’s restricted stock units in Builders FirstSource (BLDR) vest?

The 2,558 restricted stock units granted to Cory Jacobs Boydston vest on May 14, 2027. On that date, each vested RSU entitles him to receive one share of Builders FirstSource common stock, subject to continued service and the plan’s standard conditions.

What is Cory Jacobs Boydston’s total direct holding in Builders FirstSource (BLDR) after this Form 4?

After this award, Cory Jacobs Boydston’s direct holdings total 26,312 shares or share-equivalent units. This figure includes the newly granted 2,558 restricted stock units reported in the Form 4 insider transaction filed for Builders FirstSource.

Was Cory Jacobs Boydston’s Builders FirstSource (BLDR) transaction an open-market buy or sell?

The transaction was not an open-market buy or sell; it was an equity award. The Form 4 shows a Code A transaction, meaning a grant or award of 2,558 restricted stock units at no cash cost as part of director compensation.