MasterBrand (MBC) CAO sells 11,765 shares but still holds 61,351

Rhea-AI Filing Summary

MasterBrand, Inc. executive Mark A. Young, the VP and Chief Accounting Officer, reported an open-market sale of common stock. He sold 11,765 shares at $8.60 per share, and now holds 61,351 shares directly. This remaining position includes 37,569 restricted stock units that have not yet vested.

Insider Trade Summary

Net Seller: 11,765 shares ($101,179)

Net Sell 1 txn

Insider Young Mark A.

Role VP, Chief Accounting Officer

Sold 11,765 shs ($101K)

Type	Security	Shares	Price	Value
Sale	Common Stock, par value $0.01 per share	11,765	$8.60	$101K

Holdings After Transaction: Common Stock, par value $0.01 per share — 61,351 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares sold: 11,765 shares Sale price: $8.60 per share Shares held after transaction: 61,351 shares +1 more

4 metrics

Shares sold 11,765 shares Open-market sale on transaction date

Sale price $8.60 per share Price for sold common stock

Shares held after transaction 61,351 shares Direct ownership following sale

Unvested RSUs 37,569 units Restricted stock units included in holdings

Key Terms

open-market sale, restricted stock units, Form 4

3 terms

open-market sale financial

"He sold 11,765 shares at $8.60 per share in an open-market sale."

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

restricted stock units financial

"His remaining holdings include 37,569 restricted stock units that have not vested."

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.

Form 4 regulatory

"The transaction details are disclosed in a Form 4 insider trading report."

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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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^*

Young Mark A.

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VP, Chief Accounting Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026

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	06/01/2026		S		11,765	D	$8.6	61,351(1)	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. Includes 37,569 restricted stock units that have not vested.

Remarks:

	/s/ Andrean R. Horton, attorney-in-fact for Mark A. Young	06/03/2026
	** 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 insider transaction did MasterBrand (MBC) report for Mark A. Young?

MasterBrand reported that VP and Chief Accounting Officer Mark A. Young completed an open-market sale of company common stock. He sold 11,765 shares at a price of $8.60 per share, and continued to hold a sizable remaining equity position after the transaction.

How many MasterBrand (MBC) shares did Mark A. Young sell and at what price?

Mark A. Young sold 11,765 shares of MasterBrand common stock in an open-market sale. The shares were sold at a price of $8.60 per share, as disclosed in the Form 4 insider trading report filed with regulators.

How many MasterBrand (MBC) shares does Mark A. Young hold after the sale?

After the reported transaction, Mark A. Young directly holds 61,351 shares of MasterBrand common stock. This figure reflects his position immediately following the 11,765-share open-market sale disclosed in the Form 4 filing for the specified transaction date.

What portion of Mark A. Young’s MasterBrand (MBC) holdings are restricted stock units?

His post-transaction holdings include 37,569 restricted stock units that have not yet vested. These restricted stock units represent shares that may settle into common stock in the future, typically subject to continued service or other vesting conditions.

What role does Mark A. Young hold at MasterBrand (MBC)?

Mark A. Young serves as Vice President and Chief Accounting Officer at MasterBrand. As a senior officer, his equity transactions in company stock must be reported on Form 4, providing public transparency into his ownership changes and remaining holdings.

Was the MasterBrand (MBC) insider transaction a buy or a sell?

The reported insider transaction was a sale of MasterBrand common stock. The Form 4 lists transaction code “S” and describes it as an open-market sale, indicating that shares were disposed of rather than acquired in this particular filing.