MasterBrand EVP Waszak holds 70,706 common shares

The EVP's reported position combines direct common shares with RSU awards on separate vesting and settlement schedules.

Rhea-AI Filing Summary

MasterBrand, Inc. reports that its EVP, Chief Digital & Technology, William L. Waszak, held 70,706 common shares directly and two direct RSU positions. The 76,923 RSUs granted to him vest 50% on June 3, 2028 and 50% on June 3, 2029, subject to continued service. A separate 52,007 RSUs resulted from conversion of performance share units originally granted by American Woodmark Corporation and are scheduled to settle in February 2027.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider WASZAK WILLIAM L

Role EVP Chief Digital & Technology

Type	Security	Shares	Price	Value
holding	Restricted Stock Units F1, F2	--	--	--
holding	Restricted Stock Units F3, F2	--	--	--
holding	Common Stock, par value $0.01 per share	--	--	--

Holdings After Transaction: Restricted Stock Units — 128,930 contracts (Direct); Common Stock, par value $0.01 per share — 70,706 shares (Direct)

Footnotes (3)

1. F1. 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. F2. No expiration date.
3. F3. 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.

Key Figures

Common shares held directly: 70,706 shares Granted RSUs: 76,923 RSUs RSUs from converted performance share units: 52,007 RSUs

3 metrics

Common shares held directly 70,706 shares William L. Waszak's reported direct common stock position

Granted RSUs 76,923 RSUs 50% vesting on June 3, 2028 and 50% on June 3, 2029, subject to continued service

RSUs from converted performance share units 52,007 RSUs Scheduled to settle in February 2027

Key Terms

restricted stock units, performance share units, vest

3 terms

restricted stock units financial

"76,923 restricted stock units ("RSUs") granted to the reporting person"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

performance share units financial

"conversion of performance share units originally granted by American Woodmark Corporation"

Performance share units are a type of company stock award given to employees that depend on the company meeting specific goals or targets. If these goals are achieved, the employee receives shares or the value of shares; if not, they may receive little or no compensation. This aligns employees’ interests with the company's success and encourages performance that benefits investors.

vest financial

"The RSUs vest 50% on June 3, 2028"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many MBC shares and RSUs did William L. Waszak report?

William L. Waszak reported 70,706 directly held common shares, 76,923 RSUs granted to him, and a separate 52,007 RSUs resulting from conversion of performance share units originally granted by American Woodmark Corporation.

When do William L. Waszak's MBC RSUs vest or settle?

The 76,923 granted RSUs vest 50% on June 3, 2028 and 50% on June 3, 2029, subject to continued service through each applicable vesting date. The separate 52,007 RSUs are scheduled to settle in February 2027.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/26/2026 - 05:11 PM EDT Accepted by SEC EDGAR 10/26/2026 - 05:11 PM EDT Learn about SEC filing dates

SEC 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

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

WASZAK WILLIAM L

(Last) (First) (Middle)

3300 ENTERPRISE PARKWAY, SUITE 300

(Street)

BEACHWOOD OHIO 44122

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
10/15/2026

3. Issuer Name and Ticker or Trading Symbol
MasterBrand, Inc. [ MBC ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

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

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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

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: 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

Explanation of Responses:

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.

Remarks:

	/s/ Andrean R. Horton, Attorney-in-Fact	10/26/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)