Form 4 Filing for Mark A. Young

This Form 4 filing details transactions by Mark A. Young, VP, Chief Accounting Officer of MasterBrand, Inc. On August 25, 2026, Mr. Young disposed of 3,057 shares of common stock at $9.15 per share, followed by another disposal of 2,943 shares at the same price. These transactions were marked as direct ownership. Following these disposals, the post-transaction number of shares owned was reported as 69,963 and 67,020, respectively. The filing is signed by an attorney-in-fact on behalf of Mr. Young, with the signature date of August 26, 2026. The reporting period for these transactions was August 25, 2026.