MasterBrand EVP receives 62,719 RSU award

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

Rhea-AI Filing Summary

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

MasterBrand, Inc. executive Horton Andrean, EVP, CLO & Secretary, received a grant of 62,719 restricted stock units (RSUs) of common stock. The award was granted at no cash cost and is structured to vest over several years, tying compensation to future company performance.

According to the vesting schedule, 4,376 RSUs vest in equal one-third installments beginning on June 3, 2027, and 58,343 RSUs vest in two equal installments on June 3, 2028 and June 3, 2029. After this grant, Andrean directly holds 249,910 shares, including 141,516 RSUs that have not yet vested.

Insider Trade Summary

Grant/Award: 62,719 shares

Grant/Award 1 txn

Insider Horton Andrean

Role EVP, CLO & Secretary

Type	Security	Shares	Price	Value
Grant/Award	Common Stock, par value $0.01 per share	62,719	$0.00	$0.00

Holdings After Transaction: Common Stock, par value $0.01 per share — 249,910 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 as follows: (i) 4,376 in equal one-third increments over three years beginning on June 3, 2027 and (ii) 58,343 in equal one-half increments on June 3, 2028 and June 3, 2029.
2. F2. Includes 141,516 RSUs that have not yet vested.

Key Figures

RSUs granted: 62,719 RSUs Post-transaction holdings: 249,910 shares Unvested RSUs included: 141,516 RSUs +2 more

5 metrics

RSUs granted 62,719 RSUs Grant to EVP, CLO & Secretary on June 3, 2026

Post-transaction holdings 249,910 shares Total direct holdings following RSU grant

Unvested RSUs included 141,516 RSUs Unvested units included in reported holdings

Tranche 1 vesting 4,376 RSUs Vest in one-third increments starting June 3, 2027

Later vesting tranches 58,343 RSUs Vest in half increments on June 3, 2028 and June 3, 2029

Key Terms

restricted stock units ("RSUs"), vest, contingent right, grant, award, or other acquisition

4 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.

vest financial

"The RSUs vest as follows: (i) 4,376 in equal one-third increments over three years..."

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

contingent right financial

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

grant, award, or other acquisition financial

"transaction_code_description": "Grant, award, or other acquisition""

FAQ

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

What did MasterBrand (MBC) EVP Horton Andrean report in this Form 4?

Horton Andrean reported receiving a grant of 62,719 restricted stock units (RSUs) of MasterBrand common stock. The award is a compensation-related grant, not an open-market purchase or sale, and increases his equity-based stake in the company subject to future vesting conditions.

How many MasterBrand (MBC) RSUs were granted to Horton Andrean and at what price?

Andrean was granted 62,719 RSUs of MasterBrand common stock at a stated price of $0.00 per share. RSU grants typically reflect compensation value rather than a cash transaction, since each unit represents a right to receive one share upon vesting.

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

The 62,719 RSUs vest in stages: 4,376 vest in equal one-third increments over three years starting June 3, 2027, and 58,343 vest in equal halves on June 3, 2028 and June 3, 2029. Vesting requires continued service through those dates.

How many MasterBrand (MBC) shares does Horton Andrean hold after this RSU grant?

Following the grant, Andrean directly holds 249,910 shares of MasterBrand common stock. This figure includes 141,516 RSUs that have not yet vested, meaning a significant portion of his reported holdings remains subject to future vesting conditions.

Are Horton Andrean’s MasterBrand (MBC) transactions open-market buys or sells?

The reported transaction is a grant of RSUs categorized as a grant, award, or other acquisition. It is not an open-market purchase or sale; instead, it represents equity compensation that will convert into shares as the RSUs vest over time.

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

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Accepted by SEC EDGAR 06/05/2026 - 04:36 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^*

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)
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		62,719(1)	A	$0	249,910(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 as follows: (i) 4,376 in equal one-third increments over three years beginning on June 3, 2027 and (ii) 58,343 in equal one-half increments on June 3, 2028 and June 3, 2029.

2. Includes 141,516 RSUs that have not yet vested.

Remarks:

	/s/ Andrean R. Horton	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)