MasterBrand (MBC) director receives 18,824 RSUs equity award

Rhea-AI Filing Summary

COURAGE CATHERINE reported acquisition or exercise transactions in this Form 4 filing.

MasterBrand, Inc. director Catherine Courage received a grant of 18,824 restricted stock units (RSUs) of common stock at no purchase price. Each RSU represents a right to receive one MasterBrand share and will vest on June 3, 2027.

After this award, Courage holds 40,357 shares and RSUs in total, including 31,893 RSUs that have not yet vested and whose receipt has been deferred under the company’s deferred compensation plan. The filing reflects routine equity-based director compensation rather than an open-market stock purchase.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider COURAGE CATHERINE

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock, par value $0.01 per share	18,824	$0.00	--

Holdings After Transaction: Common Stock, par value $0.01 per share — 40,357 shares (Direct, null)

Footnotes (1)

1. Represents shares of 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 on June 3, 2027. Includes a total of 31,893 RSUs that have not vested, the receipt of which has been deferred under the issuer's deferred compensation plan.

Key Figures

RSUs granted: 18,824 RSUs Grant price: $0.0000 per share Vesting date: June 3, 2027 +2 more

5 metrics

RSUs granted 18,824 RSUs Grant to director Catherine Courage on June 3, 2026

Grant price $0.0000 per share Reported transaction price for RSU award

Vesting date June 3, 2027 Vesting date for 18,824 RSUs

Total holdings after grant 40,357 shares/RSUs Total equity position reported following transaction

Unvested deferred RSUs 31,893 RSUs Unvested RSUs deferred under deferred compensation plan

Key Terms

restricted stock units, RSUs, deferred compensation plan

3 terms

restricted stock units financial

"Represents shares of 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.

RSUs financial

"Each RSU represents a contingent right to receive one share of common stock of MasterBrand, Inc."

RSUs, or restricted stock units, are a form of company shares given to employees as part of their compensation. They are typically awarded with certain restrictions, such as a waiting period before they can be fully owned or sold, similar to earning a gift that becomes fully yours over time. For investors, RSUs can impact a company's stock offerings and reflect how much the company relies on stock-based incentives to attract and retain talent.

deferred compensation plan financial

"Includes a total of 31,893 RSUs that have not vested, the receipt of which has been deferred under the issuer's deferred compensation plan."

A deferred compensation plan is an arrangement where an employer agrees to pay part of an employee’s pay or bonus at a later date instead of immediately, often to reduce current tax bills or to tie rewards to long-term performance. For investors it matters because these promises create future cash obligations and influence executive incentives and retention; they can affect a company’s reported liabilities, cash flow planning and the risk profile if the business faces financial trouble.

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

COURAGE CATHERINE

(Last) (First) (Middle)

3300 ENTERPRISE PARKWAY

SUITE 300

(Street)

BEACHWOOD OHIO 44122

(City) (State) (Zip)

UNITED STATES

(Country)

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

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/03/2026

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

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

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

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $0.01 per share	06/03/2026		A		18,824(1)	A	$0	40,357(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents shares of 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 on June 3, 2027.

2. Includes a total of 31,893 RSUs that have not vested, the receipt of which has been deferred under the issuer's deferred compensation plan.

Remarks:

	/s/ Andrean R. Horton, Attorney-in-Fact for Catherine Courage	06/05/2026
	** 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 4 (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 4: SEC 1474 (03-26)

FAQ

What did MasterBrand (MBC) director Catherine Courage report on this Form 4?

Catherine Courage reported receiving 18,824 restricted stock units (RSUs) of MasterBrand common stock as a grant. These RSUs are part of her equity compensation as a director and were acquired at no purchase price, rather than through an open-market stock transaction.

How many MasterBrand RSUs were granted to Catherine Courage in this filing?

The filing shows a grant of 18,824 restricted stock units (RSUs) to Catherine Courage. Each RSU represents a contingent right to receive one share of MasterBrand common stock, subject to vesting conditions specified in the company’s equity compensation arrangements.

When do Catherine Courage’s newly granted MasterBrand RSUs vest?

The 18,824 restricted stock units (RSUs) granted to Catherine Courage vest on June 3, 2027. Vesting means she will then be entitled to receive one share of MasterBrand common stock for each RSU, assuming she satisfies any ongoing service requirements as a director.

What is Catherine Courage’s total MasterBrand equity position after this RSU grant?

After the grant, Catherine Courage’s total reported holdings are 40,357 shares and RSUs. This total includes previously awarded RSUs and common stock reflected in the filing, combining both vested and unvested equity interests associated with her role as a director.

How many of Catherine Courage’s MasterBrand RSUs are unvested and deferred?

The filing notes that 31,893 of Catherine Courage’s restricted stock units (RSUs) have not vested and their receipt has been deferred. These RSUs are held under MasterBrand’s deferred compensation plan, meaning settlement into actual shares will occur according to that plan’s distribution rules.

Was Catherine Courage’s MasterBrand RSU grant an open-market stock purchase?

No, the transaction was reported with code “A,” indicating a grant or award acquisition. The 18,824 restricted stock units (RSUs) were granted as compensation at a reported price of $0.0000 per share, not bought in the open market through a standard stock purchase.