Builders FirstSource — May 1, 2025 release

• In April 2025, the Company repurchased 3.3 million shares of its common stock at an average price of $118.27 per share for $390.9 million, inclusive of applicable fees and taxes. • On April 30, 2025, the Board of Directors authorized the repurchase of up to $500 million of the Company’s outstanding shares of common stock, which includes the approximately $100 million remaining under its prior $1 billion share repurchase authorization announced in August 2024. • Since the inception of its buyback program in August 2021, the Company has repurchased 99.3 million shares of its common stock, or 48.1% of its total shares outstanding, at an average price of $80.90 per share for a total cost of $8.0 billion, inclusive of applicable fees and taxes.   Productivity Savings From Operational Excellence 3   • For the first quarter, the Company delivered approximately $17 million in productivity savings related to operational excellence and supply chain initiatives. • The Company expects to deliver $70 million to $90 million in productivity savings in 2025.   2025 Full Year Total Company Outlook For 2025, the Company expects to achieve the financial performance highlighted below. Projected Net Sales and Adjusted EBITDA include the expected impact of price, commodities, and margins for 2025. • Net Sales to be in a range of $16.05 billion to $17.05 billion. • Gross Profit margin to be in a range of 29.0% to 31.0%. • Adjusted EBITDA to be in a range of $1.