As Of	Filer	Filing¹	For·On·As	Docs:Size	Issuer		Filing Agent

 5/13/24  Herron Stephen J                  4          Officer²    1:4K   Builders FirstSource, Inc.        Donnelley … Solutions/FA 
  5/7/24  Builders FirstSource, Inc.        10-Q        3/31/24   61:5.1M                                   Donnelley … Solutions/FA 
  5/7/24  Builders FirstSource, Inc.        8-K:2,9      5/7/24    9:664K                                   Donnelley … Solutions/FA 
  5/1/24  Builders FirstSource, Inc.        8-K:7,9      5/1/24    9:200K                                   Donnelley … Solutions/FA 
 4/25/24‡ Builders FirstSource, Inc.        DEF 14A     4/23/24    8:18M                                    Donnelley … Solutions/FA 
 4/25/24‡ Builders FirstSource, Inc.        DEFA14A     4/24/24    1:1M                                     Donnelley … Solutions/FA 
 4/25/24‡ Builders FirstSource, Inc.        ARS        12/31/23    1:645K                                   Donnelley … Solutions/FA 
 3/19/24  Jackson Peter M.                  4          Officer²    1:6K   Builders FirstSource, Inc.        Donnelley … Solutions/FA 
 3/19/24  McCrobie Paul M                   4          Officer²    1:6K   Builders FirstSource, Inc.        Donnelley … Solutions/FA 
 3/19/24  Rush David E                      4          Dir.,Off.²  1:5K   Builders FirstSource, Inc.        Donnelley … Solutions/FA 
 3/19/24  Beckmann Jami                     4          Officer²    1:10K  Builders FirstSource, Inc.        Donnelley … Solutions/FA 
 3/19/24  Robins Scott L                    4          Officer²    1:6K   Builders FirstSource, Inc.        Donnelley … Solutions/FA 
 3/19/24  Herron Stephen J                  4          Officer²    1:6K   Builders FirstSource, Inc.        Donnelley … Solutions/FA 
 3/19/24  Farmer Michael Alan               4          Officer²    1:6K   Builders FirstSource, Inc.        Donnelley … Solutions/FA 
 3/19/24  Johnson Timothy D                 4          Officer²    1:6K   Builders FirstSource, Inc.        Donnelley … Solutions/FA 
 3/19/24  Messersmith Amy B                 4          Officer²    1:5K   Builders FirstSource, Inc.        Donnelley … Solutions/FA 
 3/19/24  Hiller Michael                    4          Officer²    1:6K   Builders FirstSource, Inc.        Donnelley … Solutions/FA 
 3/14/24  Boydston Cory Jacobs              4          Director²   1:6K   Builders FirstSource, Inc.        Donnelley … Solutions/FA 
 3/12/24  Boydston Cory Jacobs              144                    1:4K   Builders FirstSource, Inc.        Schwab Stock Pl… Svcs/FA 
  3/5/24  Rush David E                      4          Dir.,Off.²  1:4K   Builders FirstSource, Inc.        Donnelley … Solutions/FA 

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‡	A non-Insider-Ownership Filing that was accepted after the SEC “closed” at 5:30:00pm ET.  The legal “Filed As Of” date may be the next, or another, day.
¹	Filing/Form Types:
	4	Statement of Changes in Beneficial Ownership of Securities by an Insider — Form 4 { The Filer is an Insider² of the Issuer }.
	8-K	Current Report — Form 8-K { Item 1: Business & Operations;  2: Financial Info;  3: Securities & Trading;  4: Accountants & Accounting;  5: Governance & Management;  6: Asset-Backed Securities;  7: Disclosures;  8: Events;  9: Financials }.
	10-Q	Quarterly Report — Form 10-Q.
	144	Notice of a Proposed Sale of Securities by an Insider — Form 144 { The Filer is an Insider² of the Issuer }.
	ARS	Annual Report to Security Holders.
	DEF 14A	Definitive Proxy Statement — Schedule 14A.
	DEFA14A	Definitive Additional Proxy Soliciting Material — Schedule 14A.
²	Insider:  The Filer is a Director, Officer, 10% Owner and/or Other “insider” of the Issuer.