Insider at MasterBrand (NYSE: MBC) has 4,226 shares withheld for taxes

Rhea-AI Filing Summary

MasterBrand, Inc. VP and Chief Accounting Officer Mark A. Young reported a tax-withholding disposition of 4,226 shares of common stock on March 2, 2026, at $10.12 per share. This withholding covered taxes due when an equity award vested. After the transaction, he directly held 48,844 shares, including 13,297 unvested restricted stock units.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Young Mark A.

Role VP, Chief Accounting Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock, par value $0.01 per share	4,226	$10.12	$43K

Holdings After Transaction: Common Stock, par value $0.01 per share — 48,844 shares (Direct)

Footnotes (1)

1. Reflects the withholding by the issuer of shares having a fair market value equal to the withholding taxes payable by the undersigned at the time the award vested and became payable, such transaction being exempt under Rule 16b-3(e). Includes 13,297 restricted stock units that have not yet vested.

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 OH 44122

(City) (State) (Zip)

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

3. Date of Earliest Transaction (Month/Day/Year)
03/02/2026

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

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 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	03/02/2026		F		4,226(1)	D	$10.12	48,844(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. Reflects the withholding by the issuer of shares having a fair market value equal to the withholding taxes payable by the undersigned at the time the award vested and became payable, such transaction being exempt under Rule 16b-3(e).

2. Includes 13,297 restricted stock units that have not yet vested.

Remarks:

	/s/ Andrean R. Horton, attorney-in-fact for Mark A. Young	03/04/2026
	** 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.

FAQ

What insider transaction did MasterBrand (MBC) report for Mark A. Young?

MasterBrand reported that VP and Chief Accounting Officer Mark A. Young had 4,226 common shares withheld at $10.12 per share. The shares covered tax obligations when an equity award vested, classified as a tax-withholding disposition exempt under Rule 16b-3(e).

Was the MasterBrand (MBC) insider transaction an open-market sale?

No, the transaction was not an open-market sale. It was a tax-withholding disposition where the issuer withheld 4,226 shares to cover withholding taxes when an award vested, as described under Rule 16b-3(e), rather than a discretionary sale in the market.

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

After the tax-withholding transaction, Mark A. Young directly holds 48,844 shares of MasterBrand common stock. This total includes 13,297 restricted stock units that have not yet vested, reflecting both currently owned shares and unvested equity awards linked to future vesting conditions.

What price was used for the MasterBrand (MBC) tax-withholding shares?

The tax-withholding disposition used a price of $10.12 per MasterBrand share. This price reflects the fair market value applied to 4,226 withheld shares to satisfy the reporting person’s withholding tax obligations at the time the equity award vested and became payable.

What does the Form 4 code F mean in the MasterBrand (MBC) filing?

In this Form 4, code F indicates a payment of tax liability by delivering securities. MasterBrand withheld 4,226 shares from Mark A. Young to cover withholding taxes when his award vested, a transaction type treated as a tax-withholding disposition rather than a traditional sale.

How many unvested restricted stock units does the MasterBrand (MBC) officer hold?

Footnotes state that Mark A. Young’s holdings include 13,297 restricted stock units that have not yet vested. These units represent additional potential shares he may receive in the future, subject to the satisfaction of vesting conditions associated with his equity awards.