Initial Statement of Beneficial Ownership (Form 3)

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * WASZAK WILLIAM L 2. Date of Event Requiring Statement (Month/Day/Year) 10/15/2026 3. Issuer Name and Ticker or Trading Symbol MasterBrand, Inc. [MBC] (Last) (First) (Middle) 3300 ENTERPRISE PARKWAY, SUITE 300 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP Chief Digital & Technology 5. If Amendment, Date Original Filed (Month/Day/Year) (Street) BEACHWOOD, OH 44122 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock, par value $0.01 per share 70,706 D

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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	06/03/2028(1)	(2)	Common Stock, par value $0.01 per share	76,923	$0	D
Restricted Stock Units	(3)	(2)	Common Stock, par value $0.01 per share	52,007	$0	D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
WASZAK WILLIAM L 3300 ENTERPRISE PARKWAY, SUITE 300 BEACHWOOD, OH 44122			EVP Chief Digital & Technology

Signatures

/s/ Andrean R. Horton, Attorney-in-Fact		10/26/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Represents 76,923 restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of common stock of MasterBrand, Inc. The RSUs vest 50% on June 3, 2028 and 50% on June 3, 2029, subject to the reporting person's continued service through the applicable vesting date.
(2)	No expiration date.
(3)	Represents 52,007 restricted stock units of MasterBrand, Inc. resulting from the conversion of performance share units originally granted by American Woodmark Corporation. Each restricted stock unit represents a contingent right to receive one share of MasterBrand, Inc. common stock. The restricted stock units are scheduled to settle in February 2027 pursuant to the terms of the applicable award.

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