Builders Firstsource, Inc.

BLDR·NYSE·$74.41Share Price as of 11/2·$8BMarket Cap as of 11/2

Financials

10-QQ3 ended 09/30/2610/29/26 10-QQ2 ended 06/30/2607/30/26 10-QQ1 ended 03/31/2604/30/26 10-KFY 202502/17/26 10-QQ3 ended 09/30/2510/30/25

Disclosures

8-KCurrent report10/29/26 8-K/ACurrent report (amended)10/16/26 8-KCurrent report08/07/26 8-KCurrent report07/30/26 8-KCurrent report06/05/26

Prospectuses and Registrations

S-8Registration of securities for employees05/21/26 S-8Registration of securities for employees01/04/21 424B3Prospectus11/18/20 S-4/ARegistration (business combination, amended)11/17/20 S-4Registration (business combination)10/08/20

Proxies

DEF 14ADefinitive proxy04/02/26 DEFA14AAdditional proxy materials04/02/26 DEF 14ADefinitive proxy04/15/25 DEFA14AAdditional proxy materials04/15/25 PRE 14APreliminary proxy04/04/25

Ownership

Form 4Insider transaction10/20/26 Form 4Insider transaction09/14/26 Form 4Insider transaction09/14/26 Form 4Insider transaction09/14/26 Form 4Insider transaction09/14/26

Other

SDConflict Minerals disclosure05/28/26 ARSAnnual report to shareholders04/02/26 8-A12B8-A12B08/11/25 CERTCEO/CFO certification08/11/25 SDConflict Minerals disclosure05/30/25