Young Mark A. 4

What Happened
Mark A. Young, Vice President and Chief Accounting Officer of MasterBrand, Inc. (MBC), received a grant of 24,272 restricted stock units (RSUs) reported as an acquisition on 2026-03-16. The filing lists the acquisition price as $0 (typical for RSU awards); the reported monetary value in the Form 4 is $0. Each RSU represents a contingent right to one share of MasterBrand common stock.

Key Details

• Transaction date: 2026-03-16; Form 4 filed: 2026-03-18 (timely within the usual 2-business-day window).
• Transaction type/code: Award/Grant (A).
• Shares/units granted: 24,272 RSUs; reported acquisition price: $0; reported total value: $0.
• Vesting: RSUs vest in equal one-third increments over three years beginning February 28, 2027 (Footnote F1).
• Footnote F2: filing notes inclusion of 37,569 RSUs that have not yet vested (i.e., unvested RSUs on record).
• Shares owned after transaction: not specified in the Form 4.

Context
RSU grants are a form of compensation, not an open‑market purchase or sale, and do not necessarily reflect an insider buying or selling for investment reasons. These RSUs will convert to shares only as they vest (starting 2/28/2027), and any tax withholding or later sales would be reported in subsequent filings.