MasterBrand (NYSE: MBC) awards 56,432 RSUs to EVP, CLO Horton

Rhea-AI Filing Summary

Horton Andrean reported acquisition or exercise transactions in this Form 4 filing.

MasterBrand, Inc. reported that EVP, CLO & Secretary Andrean Horton received a grant of 56,432 restricted stock units (RSUs) of common stock. The RSUs vest in equal one-third increments over three years beginning on February 28, 2027. After this award, Horton directly holds 187,191 shares and RSUs, including 78,797 RSUs that are not yet vested.

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

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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^*

Horton Andrean

(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)
	EVP, CLO & Secretary

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/16/2026

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	03/16/2026		A		56,432(1)	A	$0	187,191(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 in equal one-third increments over three years beginning on February 28, 2027.

2. Includes 78,797 RSUs that have not yet vested.

Remarks:

	/s/ Andrean R. Horton	03/18/2026
	** 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) disclose in this Form 4 for Andrean Horton?

MasterBrand reported that EVP, CLO & Secretary Andrean Horton received a grant of 56,432 restricted stock units. These RSUs are a form of equity compensation that may convert into common shares over time, aligning her interests with long-term company performance.

How many RSUs were granted to Andrean Horton by MasterBrand (MBC)?

Andrean Horton was granted 56,432 restricted stock units of MasterBrand common stock. Each RSU represents a contingent right to receive one share, subject to vesting conditions being met over a multi-year period starting in 2027.

What is the vesting schedule for Andrean Horton’s new MasterBrand (MBC) RSUs?

The 56,432 RSUs granted to Andrean Horton vest in three equal installments. Vesting occurs in one-third increments each year, beginning on February 28, 2027, which means full vesting will be completed over a three-year period if conditions are satisfied.

How many MasterBrand (MBC) shares and RSUs does Andrean Horton hold after this Form 4?

Following the RSU grant, Andrean Horton directly holds 187,191 shares and RSUs in total. This amount includes 78,797 restricted stock units that have not yet vested, reflecting a significant equity-based component in her overall compensation package.

Are Andrean Horton’s newly granted MasterBrand (MBC) RSUs issued at a purchase price?

The filing shows the 56,432 RSUs were granted at a price of $0.00 per unit. This indicates they are compensation awards rather than open-market purchases, and value for Horton depends on future vesting and the company’s share price.

What do unvested RSUs mean in MasterBrand (MBC) insider holdings?

Unvested RSUs represent promised equity that the insider does not yet fully own. For Andrean Horton, the holdings include 78,797 unvested RSUs, which will convert into common stock only if the specified vesting conditions and service requirements are satisfied over time.