Form 4 Filing for Builders FirstSource, Inc. - OLEARY JAMES

This Form 4 filing details a transaction by OLEARY JAMES, a director at Builders FirstSource, Inc. On September 10, 2026, James acquired 564 shares of common stock, with a par value of $0.01 per share. This acquisition was made 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 transaction code for this acquisition was 'A'. Following this transaction, James now holds 91,795 shares of the company's common stock. The filing was signed on September 14, 2026, by Alena Brenner, acting under power of attorney for James.