MICHAEL ALAN FARMER - 07 Dec 2023 Form 4 Insider Report for Builders FirstSource, Inc. (BLDR)

Role: President - Commercial Ops
Signature: /s/ Minator Azemi, by power of attorney
Issuer symbol: BLDR
Transactions as of: 07 Dec 2023
Net transactions value: -$431,805
Form type: 4
Filing time: 08 Dec 2023, 18:00:09 UTC
Previous filing: 27 Nov 2023
Next filing: 21 Feb 2024
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BLDR	Common Stock, par value $0.01 per share	Options Exercise	$51,429	+3,318	+5.5%	$15.50^*	63,978	07 Dec 2023	Direct
transaction	BLDR	Common Stock, par value $0.01 per share	Sale	$483,234	-3,318	-5.2%	$145.64	60,660	07 Dec 2023	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	BLDR	Employee Stock Option (right to buy)	Options Exercise	$0	-3,318	-100%	$0.000000^*	0	07 Dec 2023	Common Stock	3,318	$15.50	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Award issued under the Company's 2014 Incentive Plan.
F2	This option was fully exercisable.