MasterBrand director granted 18,824 RSUs

PETRATIS DAVID D reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

PETRATIS DAVID D reported acquisition or exercise transactions in this Form 4 filing.

MasterBrand, Inc. director David D. Petratis received a grant of 18,824 restricted stock units (RSUs) of common stock on June 3, 2026 at no cash cost, as director compensation. Each RSU represents the right to receive one share of MasterBrand common stock and will vest on June 3, 2027.

After this award, Petratis has 58,328 share-related interests, including 31,893 unvested RSUs and 26,435 shares whose receipt has been deferred under the company’s deferred compensation plan.

Insider Trade Summary

Grant/Award: 18,824 shares

Grant/Award 1 txn

Insider PETRATIS DAVID D

Role Director

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

Holdings After Transaction: Common Stock, par value $0.01 per share — 58,328 shares (Direct)

Footnotes (2)

1. F1. 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. F2. Includes a total of 31,893 RSUs that have not vested and 26,435 shares, the receipt of which has been deferred under the issuer's deferred compensation plan.

Key Figures

RSUs granted: 18,824 RSUs Post-transaction holdings: 58,328 share-related interests Unvested RSUs: 31,893 RSUs +3 more

6 metrics

RSUs granted 18,824 RSUs Grant to director David D. Petratis on June 3, 2026

Post-transaction holdings 58,328 share-related interests Total holdings following RSU grant

Unvested RSUs 31,893 RSUs Unvested RSUs held after the grant

Deferred shares 26,435 shares Receipt deferred under deferred compensation plan

Grant price $0.00 per share Reported price for RSU grant (compensation, not purchase)

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

Key Terms

restricted stock units ("RSUs"), contingent right, deferred compensation plan

3 terms

restricted stock units ("RSUs") financial

"Represents shares of restricted stock units ("RSUs") granted to the reporting person."

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

contingent right financial

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

deferred compensation plan financial

"Includes a total of 31,893 RSUs that have not vested and 26,435 shares, 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.

FAQ

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

What did MasterBrand (MBC) director David Petratis report in this Form 4?

David D. Petratis reported receiving 18,824 restricted stock units (RSUs) of MasterBrand common stock as a grant. These RSUs are part of his director compensation and do not involve a cash purchase in the open market.

How many MasterBrand RSUs were granted to director David Petratis?

He was granted 18,824 restricted stock units (RSUs) of MasterBrand common stock. Each RSU represents a contingent right to receive one share, subject to vesting conditions described in the company’s equity compensation arrangements.

When do David Petratis’s newly granted MasterBrand RSUs vest?

The 18,824 restricted stock units granted to David Petratis vest on June 3, 2027. Vesting means he will then be entitled to receive one share of MasterBrand common stock for each RSU, assuming he meets any required service conditions.

What are David Petratis’s total MasterBrand share-related holdings after this transaction?

Following the RSU grant, he holds 58,328 share-related interests. This total includes 31,893 RSUs that have not yet vested and 26,435 shares whose receipt has been deferred under MasterBrand’s deferred compensation plan.

Did David Petratis buy or sell MasterBrand (MBC) shares on the market?

No open-market buy or sell occurred. The Form 4 shows a grant of 18,824 restricted stock units at a reported price of $0.00 per share, reflecting a compensation award rather than a market transaction in MasterBrand stock.

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

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Accepted by SEC EDGAR 06/05/2026 - 04:37 PM Learn about SEC filing dates

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^*

PETRATIS DAVID D

(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	58,328(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 and 26,435 shares, the receipt of which has been deferred under the issuer's deferred compensation plan.

Remarks:

	/s/ Andrean R. Horton, attorney-in-fact for David D. Petratis	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)