MasterBrand, Inc. — Director's Dealing 2025

Dec 17, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MasterBrand, Inc. (MBC)
CIK: 0001941365
Period of Report: 2025-12-15

Reporting Person: Simon Andrea Helen (EVP & CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-12-15	Common Stock, par value $0.01 per share	F	34956	$11.65	Disposed	259134	Direct

Footnotes

F1: Reflects the withholding by the issuer of shares having a fair market value equal to the withholding taxes payable by the undersigned at the time the award vested and became payable, such transaction being exempt under Rule 16b-3(e).

F2: Includes a total of 84,945 restricted stock units that have not yet vested.