MasterBrand (NYSE: MBC) exec lines up new stock sale after June trade

Rhea-AI Filing Summary

MasterBrand, Inc. (MBC) has a notice of proposed sale under Rule 144 filed by officer Mark A. Young. He plans to sell 6,000 shares of common stock through Morgan Stanley Smith Barney LLC on or after August 25, 2026, with an indicated aggregate market value of $54,900. In the prior three months, he already sold 11,765 shares for $101,179. The 6,000 shares derive from restricted stock grants dated May 1, 2024 and February 28, 2024.

Key Figures

Shares proposed to be sold: 6,000 shares Aggregate market value of proposed sale: $54,900.00 CUSIP: 203490490 +5 more

8 metrics

Shares proposed to be sold 6,000 shares Common stock sale planned under Rule 144

Aggregate market value of proposed sale $54,900.00 Indicated value for 6,000 shares to be sold

CUSIP 203490490 Security identifier for the common stock to be sold

Intended sale date 08/25/2026 Proposed date for Rule 144 sale

Shares sold in past 3 months 11,765 shares Common stock sold on 06/01/2026

Aggregate sale price in past 3 months $101,179.00 Proceeds from 11,765 shares sold on 06/01/2026

Restricted stock grant (May 1, 2024) 3,057 shares Issuer restricted stock to be sold under Rule 144

Restricted stock grant (February 28, 2024) 2,943 shares Issuer restricted stock to be sold under Rule 144

Key Terms

Rule 144, Restricted Stock, aggregate sale price, Executive Financial Services

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock financial

"Common | 05/01/2024 | Restricted Stock | Issuer"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

aggregate sale price financial

"| 06/01/2026 | 11765 | 101179.00"

Executive Financial Services financial

"Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza"

FAQ

What does the Form 144 filing disclose for MasterBrand, Inc. (MBC)?

The Form 144 discloses that officer Mark A. Young intends to sell 6,000 shares of MasterBrand, Inc. common stock under Rule 144, with an indicated aggregate market value of $54,900, through Morgan Stanley Smith Barney LLC.

How many MasterBrand (MBC) shares is Mark A. Young planning to sell?

Mark A. Young plans to sell 6,000 shares of MasterBrand, Inc. common stock. The filing lists an indicated aggregate market value of $54,900 for these shares and references an intended sale date of August 25, 2026.

What prior sales has Mark A. Young reported for MasterBrand (MBC) stock?

Over the past three months, Mark A. Young reported selling 11,765 shares of MasterBrand, Inc. common stock on June 1, 2026, for an aggregate sale price of $101,179, according to the Form 144 disclosure.

What is the source of the MasterBrand (MBC) shares to be sold under Rule 144?

The 6,000 shares to be sold under Rule 144 come from restricted stock granted by the issuer on May 1, 2024 (3,057 shares) and February 28, 2024 (2,943 shares), as listed in the securities-to-be-sold section.

Which broker is handling the planned Rule 144 sale for MasterBrand (MBC) shares?

The planned Rule 144 sale will be handled by Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, New York. The filing lists this broker for the proposed sale of 6,000 shares of MasterBrand, Inc. common stock.

On what exchange are the MasterBrand (MBC) shares listed in this Form 144?

The Form 144 identifies the MasterBrand, Inc. common stock to be sold as listed on the NYSE. The filing associates the 6,000 shares proposed for sale with this exchange listing.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 08/25/2026 - 04:07 PM Accepted by SEC EDGAR 08/25/2026 - 04:07 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001630133
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	MasterBrand, Inc.
SEC File Number	001-41545
Address of Issuer	3300 Enterprise Parkway, Suite 300 Beachwood OHIO 44122
Phone	877-622-4782
Name of Person for Whose Account the Securities are To Be Sold	MARK A YOUNG
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	6000	54900.00	203490490	08/25/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	05/01/2024	Restricted Stock	Issuer			3057	05/01/2024	Not Applicable
Common	02/28/2024	Restricted Stock	Issuer			2943	02/28/2024	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
MARK A YOUNG 3300 Enterprise Parkway, Suite 300 Beachwood OH 44122	Common	06/01/2026	11765	101179.00

144: Remarks and Signature

Remarks
Date of Notice	08/25/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Mark A Young
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)