Kurt Wanninger - 11 Aug 2026 Form 4 Insider Report for MasterBrand, Inc. (MBC)

Reporting relationship: EVP & Chief Operations Officer
Issuer ticker: MBC
Reported as of: 11 Aug 2026
Net transaction value: -$461,065
SEC form: 4
Accepted by SEC: 13 Aug 2026, 16:11:21 UTC
Prior SEC filing: 18 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Andrean R. Horton, attorney-in-fact for Kurt Wanninger

Key filing fact

Kurt Wanninger filed Form 4 for MasterBrand, Inc. (MBC) on 13 Aug 2026.

Key facts

This page summarizes Kurt Wanninger's Form 4 filing for MasterBrand, Inc. (MBC).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 13 Aug 2026, 16:11.

Change

Previous filing in this sequence was filed on 18 Mar 2026.
Current net transaction value: -$461,065.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001591630 Primary reporting owner

Wanninger Kurt

Relationship: EVP & Chief Operations Officer
Address: 3300 ENTERPRISE PARKWAY, SUITE 300, BEACHWOOD
Signature: /s/ Andrean R. Horton, attorney-in-fact for Kurt Wanninger
Signature date: 13 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MBC transaction

Common Stock, par value $0.01 per share

Sale

Transaction value: $461,065
Shares: -50,000
Change %: -20%
Price: $9.22
Shares after: 201,199
Date: 11 Aug 2026
Ownership: Direct
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

The reported price in Column 4 is a weighted average sale price. The shares were sold in multiple transactions at prices ranging from $9.16 to $9.305 per share. The reporting person undertakes to provide to MasterBrand, Inc., any security holder of MasterBrand, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

Footnote F2

Includes 56,645 RSUs that have not yet vested, 676 shares held in the issuer's 401(k) plan, and 40,348 shares, the receipt of which has been deferred under the issuer's deferred compensation plan.