Form 4 Filing for Renz Maria

This filing reports that Renz Maria acquired 489 shares of Builders FirstSource, Inc. common stock on September 10, 2026. These shares were received in lieu of cash compensation for services rendered as a director, as per the Corporation's 2026 Incentive Plan and Amended and Restated Director Compensation Policy. The acquisition was made under transaction code "A" with a price of $0.00 per share. Following this transaction, Maria holds a total of 6,870 shares. The filing was signed on September 14, 2026, by Alena Brenner, acting under power of attorney for the reporting owner.