Builders FirstSource, Inc. (NYSE:BLDR) ("Builders FirstSource" or the "Company") will host its 2026 Investor Day and webcast on November 17, 2026, at the New York Stock Exchange in New York, with presentations beginning at 8:45 a.m. Eastern Time and concluding at approximately 12:00 p.m. Eastern Time.

CEO Peter Jackson, CFO Pete Beckmann, and members of the senior leadership team will present a detailed overview of the Company’s growth strategy, operational and technology/digital initiatives, disciplined capital allocation framework, and long-term financial targets. The event will also include multiple Q&A sessions with senior leadership.

The live webcast, archived replay, and the accompanying presentation can be accessed on the Company's investor relations website at investors.bldr.com under the Events and Presentations section. The online archive of the webcast will be available for approximately 120 days.

About Builders FirstSource

Builders FirstSource (NYSE:BLDR), headquartered in Irving, Texas, is a leading provider of building materials for professional builders in new residential construction and repair and remodeling. We deliver integrated homebuilding solutions by manufacturing, supplying, and installing a full range of structural and related building products. With approximately 565 locations across 43 states, we serve 48 of the top 50 and 91 of the top 100 Core Based Statistical Areas (CBSAs), ensuring broad geographic coverage and enhancing our ability to partner with our customers. Our leading network of strategically located manufacturing facilities produces factory-built roof and floor trusses, wall panels, vinyl windows, custom millwork and trim, manufactured and semi-custom modular homes, as well as engineered wood that we design and cut specifically for each home. We also assemble interior and exterior doors into pre-hung units for easy installation. Additionally, we distribute a wide range of building products, including lumber, sheet goods, windows, doors, millwork, and specialty items. Our services, which vary by market, include professional installation, turnkey framing, and shell construction. Supported by the latest construction innovations and digital solutions, we help drive greater efficiency across homebuilding. Learn more at www.bldr.com.

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Builders FirstSource Contact:

Heather Kos

SVP, Investor Relations

Builders FirstSource, Inc.

investorrelations@BLDR.com