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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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"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."}],"balance_after":201199,"source":{"system":"sec-edgar","filing":"0001941365-26-000075","document":"wk-form4_1786651879.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1591630/000194136526000075/wk-form4_1786651879.xml","form_type":"4"}},{"id":739187,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":30747,"kind":"person","name":"Fracassa Philip D.","position":1,"cik":"0001598539","reported_name":"Fracassa Philip D.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-06-12T20:55:28.000Z","date":"2026-06-11","kind":"purchase","planned":false,"acquired":true,"shares":5000,"price":9.11,"value":45550.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes a total of 18,824 restricted stock units that have not vested."}],"balance_after":45041,"source":{"system":"sec-edgar","filing":"0001193125-26-269634","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1598539/000119312526269634/ownership.xml","form_type":"4"}},{"id":741077,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":39133,"kind":"person","name":"Kendrick Bruce Alan","position":1,"cik":"0001955149","reported_name":"Kendrick Bruce Alan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & Chief HR Officer"}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-06-11T22:17:21.000Z","date":"2026-06-10","kind":"sale","planned":false,"acquired":false,"shares":26245,"price":9.0233,"value":236816.5085,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares were sold in multiple transactions at prices ranging from $9.00 to $9.065 per share. The price reported reflects the volume weighted average price for the transactions. The reporting person undertakes to provide upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 130,947 RSUs that have not yet vested."}],"balance_after":241665,"source":{"system":"sec-edgar","filing":"0001628280-26-042605","document":"wk-form4_1781216239.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1941365/000162828026042605/wk-form4_1781216239.xml","form_type":"4"}},{"id":744451,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":27738,"kind":"person","name":"PETRATIS DAVID D","position":1,"cik":"0001299140","reported_name":"PETRATIS DAVID D","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-06-09T20:07:18.000Z","date":"2026-06-08","kind":"purchase","planned":false,"acquired":true,"shares":11587,"price":8.8237,"value":102240.2119,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares were purchased in multiple transactions at prices ranging from $8.80 to $8.85 per share. 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The reporting person undertakes to provide upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes a total of 31,893 RSUs that have not vested and 26,435 shares, the receipt of which has been deferred under the issuer's deferred compensation plan."}],"balance_after":69915,"source":{"system":"sec-edgar","filing":"0001628280-26-041887","document":"wk-form4_1781035635.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1299140/000162828026041887/wk-form4_1781035635.xml","form_type":"4"}},{"id":747430,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":21143,"kind":"person","name":"Crisci Robert","position":1,"cik":"0001699417","reported_name":"Crisci Robert","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-06-05T20:37:09.000Z","date":"2026-06-03","kind":"grant","planned":false,"acquired":true,"shares":18824,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of restricted stock units (\"RSUs\") granted to the reporting person. 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The RSUs vest on June 3, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes a total of 31,893 RSUs that have not vested and 26,435 shares, the receipt of which has been deferred under the issuer's deferred compensation plan."}],"balance_after":58328,"source":{"system":"sec-edgar","filing":"0001628280-26-041296","document":"wk-form4_1780691821.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1299140/000162828026041296/wk-form4_1780691821.xml","form_type":"4"}},{"id":747521,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":40811,"kind":"person","name":"COURAGE CATHERINE","position":1,"cik":"0001559988","reported_name":"COURAGE CATHERINE","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-06-05T20:36:58.000Z","date":"2026-06-03","kind":"grant","planned":false,"acquired":true,"shares":18824,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of restricted stock units (\"RSUs\") granted to the reporting person. 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The RSUs vest on June 3, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes a total of 31,893 RSUs that have not vested, of which the receipt of 18,824 RSUs has been deferred under the issuer's deferred compensation plan."}],"balance_after":65317,"source":{"system":"sec-edgar","filing":"0001628280-26-041294","document":"wk-form4_1780691809.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1393486/000162828026041294/wk-form4_1780691809.xml","form_type":"4"}},{"id":747449,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":40798,"kind":"person","name":"Horton Andrean","position":1,"cik":"0001661135","reported_name":"Horton Andrean","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, CLO & Secretary"}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-06-05T20:36:46.000Z","date":"2026-06-03","kind":"grant","planned":false,"acquired":true,"shares":62719,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of restricted stock units (\"RSUs\") granted to the reporting person. 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Each RSU represents a contingent right to receive one share of common stock of MasterBrand, Inc. 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The RSUs vest as follows: (i) 17,503 in equal one-third increments over three years beginning on June 3, 2027 and (ii) 87,515 in equal one-half increments on June 3, 2028 and June 3, 2029."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 244,973 RSUs that have not yet vested."}],"balance_after":492341,"source":{"system":"sec-edgar","filing":"0001628280-26-041287","document":"wk-form4_1780691766.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1941365/000162828026041287/wk-form4_1780691766.xml","form_type":"4"}},{"id":747700,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":15084,"kind":"person","name":"HACKETT ANN F","position":1,"cik":"0001188662","reported_name":"HACKETT ANN F","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-06-05T20:36:02.000Z","date":"2026-06-03","kind":"grant","planned":false,"acquired":true,"shares":18824,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of restricted stock units (\"RSUs\") granted to the reporting person. 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The RSUs vest on June 3, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes a total of 31,893 RSUs that have not vested and 34,815 shares, of which the receipt of 13,069 RSUs and 34,815 shares has been deferred under the issuer's deferred compensation plan."}],"balance_after":77413,"source":{"system":"sec-edgar","filing":"0001628280-26-041286","document":"wk-form4_1780691760.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1188662/000162828026041286/wk-form4_1780691760.xml","form_type":"4"}},{"id":747338,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":40775,"kind":"person","name":"Grewal Navneet","position":1,"cik":"0001955293","reported_name":"Grewal Navneet","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chief Digital & Tech Off."}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-06-05T20:35:57.000Z","date":"2026-06-03","kind":"grant","planned":false,"acquired":true,"shares":72929,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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) 14,586 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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 156,148 RSUs that have not yet vested."}],"balance_after":286842,"source":{"system":"sec-edgar","filing":"0001628280-26-041285","document":"wk-form4_1780691754.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1941365/000162828026041285/wk-form4_1780691754.xml","form_type":"4"}},{"id":748625,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":1593,"kind":"person","name":"HENDRIX DANIEL T","position":1,"cik":"0001094629","reported_name":"HENDRIX DANIEL T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-06-05T20:35:41.000Z","date":"2026-06-03","kind":"grant","planned":false,"acquired":true,"shares":18824,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of restricted stock units (\"RSUs\") granted to the reporting person. 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The RSUs vest on June 3, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes a total of 18,824 RSUs that have not vested."}],"balance_after":99009,"source":{"system":"sec-edgar","filing":"0001193125-26-259746","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1094629/000119312526259746/ownership.xml","form_type":"4"}},{"id":747481,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":30747,"kind":"person","name":"Fracassa Philip D.","position":1,"cik":"0001598539","reported_name":"Fracassa Philip D.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-06-05T20:32:36.000Z","date":"2026-06-03","kind":"grant","planned":false,"acquired":true,"shares":18824,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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 on June 3, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes a total of 18,824 RSUs that have not vested."}],"balance_after":40041,"source":{"system":"sec-edgar","filing":"0001193125-26-259726","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1598539/000119312526259726/ownership.xml","form_type":"4"}},{"id":747761,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":30793,"kind":"person","name":"Cogan Andrew B","position":1,"cik":"0001310400","reported_name":"Cogan Andrew B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-06-05T20:31:09.000Z","date":"2026-06-03","kind":"grant","planned":false,"acquired":true,"shares":18824,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of restricted stock units (\"RSUs\") granted to the reporting person. 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The RSUs vest on June 3, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes a total of 18,824 RSUs that have not vested."}],"balance_after":99987,"source":{"system":"sec-edgar","filing":"0001193125-26-259713","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1310400/000119312526259713/ownership.xml","form_type":"4"}},{"id":751686,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":19479,"kind":"person","name":"Young Mark A.","position":1,"cik":"0001630133","reported_name":"Young Mark A.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Chief Accounting Officer"}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-06-03T20:40:01.000Z","date":"2026-06-01","kind":"sale","planned":false,"acquired":false,"shares":11765,"price":8.6,"value":101179.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes 37,569 restricted stock units that have not vested."}],"balance_after":61351,"source":{"system":"sec-edgar","filing":"0001628280-26-040434","document":"wk-form4_1780519197.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1630133/000162828026040434/wk-form4_1780519197.xml","form_type":"4"}},{"id":754015,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":40799,"kind":"person","name":"Banyard R David","position":1,"cik":"0001660085","reported_name":"Banyard R David","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO & President"}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-06-02T23:10:19.000Z","date":"2026-06-01","kind":"purchase","planned":false,"acquired":true,"shares":60000,"price":8.43,"value":505800.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares were purchased in multiple transactions at prices ranging from $8.33 to $8.49 per share. The price reported reflects the volume weighted average price for the transactions. The reporting person undertakes to provide upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 576,339 restricted stock units that have not yet vested and 446,819 shares, the receipt of which has been deferred under the issuer's deferred compensation plan."}],"balance_after":1831788,"source":{"system":"sec-edgar","filing":"0001193125-26-254050","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1660085/000119312526254050/ownership.xml","form_type":"4"}},{"id":757772,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":1593,"kind":"person","name":"HENDRIX DANIEL T","position":1,"cik":"0001094629","reported_name":"HENDRIX DANIEL T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-06-01T20:54:20.000Z","date":"2026-05-28","kind":"grant","planned":false,"acquired":true,"shares":80185,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On May 28, 2026, pursuant to that certain Agreement and Plan of Merger, dated August 5, 2025 (the \"Merger Agreement\"), by and among the issuer, Maple Merger Sub, Inc., a Virginia corporation and wholly owned subsidiary of the issuer (\"Merger Sub\"), and American Woodmark Corporation, a Virginia corporation (\"AMWD\"), Merger Sub merged with and into AMWD with AMWD surviving as a wholly owned subsidiary of the issuer (the \"Merger\")."},{"field":"shares","element":"transactionShares","label":"F2","text":"At the effective time of the Merger (the \"Effective Time\"), each share of common stock of AMWD outstanding immediately prior to the Effective Time converted into the right to receive 5.150 shares of common stock of the issuer (such ratio, the \"Exchange Ratio\"). In addition, at the Effective Time, each restricted stock unit held by AMWD's non-employee directors converted into the right to receive a number of shares of issuer common stock equal to the number of shares of AMWD common stock subject to the restricted stock unit immediately prior to the Effective Time multiplied by the Exchange Ratio (with a cash payment in respect of any fractional shares in accordance with the Merger Agreement), less any applicable tax withholding."}],"balance_after":80185,"source":{"system":"sec-edgar","filing":"0001193125-26-251658","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1094629/000119312526251658/ownership.xml","form_type":"4"}},{"id":756729,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":30747,"kind":"person","name":"Fracassa Philip D.","position":1,"cik":"0001598539","reported_name":"Fracassa Philip D.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-06-01T20:51:20.000Z","date":"2026-05-28","kind":"grant","planned":false,"acquired":true,"shares":21217,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On May 28, 2026, pursuant to that certain Agreement and Plan of Merger, dated August 5, 2025 (the \"Merger Agreement\"), by and among the issuer, Maple Merger Sub, Inc., a Virginia corporation and wholly owned subsidiary of the issuer (\"Merger Sub\"), and American Woodmark Corporation, a Virginia corporation (\"AMWD\"), Merger Sub merged with and into AMWD with AMWD surviving as a wholly owned subsidiary of the issuer (the \"Merger\")."},{"field":"shares","element":"transactionShares","label":"F2","text":"At the effective time of the Merger (the \"Effective Time\"), each share of common stock of AMWD outstanding immediately prior to the Effective Time converted into the right to receive 5.150 shares of common stock of the issuer (such ratio, the \"Exchange Ratio\"). In addition, at the Effective Time, each restricted stock unit held by AMWD's non-employee directors converted into the right to receive a number of shares of issuer common stock equal to the number of shares of AMWD common stock subject to the restricted stock unit immediately prior to the Effective Time multiplied by the Exchange Ratio (with a cash payment in respect of any fractional shares in accordance with the Merger Agreement), less any applicable tax withholding."}],"balance_after":21217,"source":{"system":"sec-edgar","filing":"0001193125-26-251647","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1598539/000119312526251647/ownership.xml","form_type":"4"}},{"id":756892,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":30793,"kind":"person","name":"Cogan Andrew B","position":1,"cik":"0001310400","reported_name":"Cogan Andrew B","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-06-01T20:49:52.000Z","date":"2026-05-28","kind":"grant","planned":false,"acquired":true,"shares":81163,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On May 28, 2026, pursuant to that certain Agreement and Plan of Merger, dated August 5, 2025 (the \"Merger Agreement\"), by and among the issuer, Maple Merger Sub, Inc., a Virginia corporation and wholly owned subsidiary of the issuer (\"Merger Sub\"), and American Woodmark Corporation, a Virginia corporation (\"AMWD\"), Merger Sub merged with and into AMWD with AMWD surviving as a wholly owned subsidiary of the issuer (the \"Merger\")."},{"field":"shares","element":"transactionShares","label":"F2","text":"At the effective time of the Merger (the \"Effective Time\"), each share of common stock of AMWD outstanding immediately prior to the Effective Time converted into the right to receive 5.150 shares of common stock of the issuer (such ratio, the \"Exchange Ratio\"). In addition, at the Effective Time, each restricted stock unit held by AMWD's non-employee directors converted into the right to receive a number of shares of issuer common stock equal to the number of shares of AMWD common stock subject to the restricted stock unit immediately prior to the Effective Time multiplied by the Exchange Ratio (with a cash payment in respect of any fractional shares in accordance with the Merger Agreement), less any applicable tax withholding."}],"balance_after":81163,"source":{"system":"sec-edgar","filing":"0001193125-26-251640","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1310400/000119312526251640/ownership.xml","form_type":"4"}},{"id":834981,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":19479,"kind":"person","name":"Young Mark A.","position":1,"cik":"0001630133","reported_name":"Young Mark A.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Chief Accounting Officer"}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-03-18T20:43:14.000Z","date":"2026-03-16","kind":"grant","planned":false,"acquired":true,"shares":24272,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 37,569 RSUs that have not yet vested."}],"balance_after":73116,"source":{"system":"sec-edgar","filing":"0001628280-26-019452","document":"wk-form4_1773866577.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1630133/000162828026019452/wk-form4_1773866577.xml","form_type":"4"}},{"id":834348,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":40777,"kind":"person","name":"Simon Andrea Helen","position":1,"cik":"0001955154","reported_name":"Simon Andrea Helen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & CFO"}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-03-18T20:31:16.000Z","date":"2026-03-16","kind":"grant","planned":false,"acquired":true,"shares":97087,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 139,955 RSUs that have not yet vested."}],"balance_after":387323,"source":{"system":"sec-edgar","filing":"0001941365-26-000047","document":"wk-form4_1773865871.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1941365/000194136526000047/wk-form4_1773865871.xml","form_type":"4"}},{"id":834484,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":40799,"kind":"person","name":"Banyard R David","position":1,"cik":"0001660085","reported_name":"Banyard R David","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO & President"}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-03-18T20:30:58.000Z","date":"2026-03-16","kind":"grant","planned":false,"acquired":true,"shares":409891,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of restricted stock units (\"RSUs\") granted to the reporting person. 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The RSUs vest in equal one-third increments over three years beginning on February 28, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 576,339 RSUs that have not yet vested and 446,819 shares, the receipt of which has been deferred under the issuer's deferred compensation plan."}],"balance_after":1771788,"source":{"system":"sec-edgar","filing":"0001941365-26-000045","document":"wk-form4_1773865855.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1660085/000194136526000045/wk-form4_1773865855.xml","form_type":"4"}},{"id":834349,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":40775,"kind":"person","name":"Grewal Navneet","position":1,"cik":"0001955293","reported_name":"Grewal Navneet","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chief Digital & Tech Off."}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-03-18T20:30:51.000Z","date":"2026-03-16","kind":"grant","planned":false,"acquired":true,"shares":57646,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of restricted stock units (\"RSUs\") granted to the reporting person. 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The RSUs vest in equal one-third increments over three years beginning on February 28, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 83,219 RSUs that have not yet vested."}],"balance_after":213913,"source":{"system":"sec-edgar","filing":"0001941365-26-000044","document":"wk-form4_1773865849.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1941365/000194136526000044/wk-form4_1773865849.xml","form_type":"4"}},{"id":834517,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":23626,"kind":"person","name":"Wanninger Kurt","position":1,"cik":"0001591630","reported_name":"Wanninger Kurt","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & Chief Operations Officer"}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-03-18T20:30:40.000Z","date":"2026-03-16","kind":"grant","planned":false,"acquired":true,"shares":39442,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of restricted stock units (\"RSUs\") granted to the reporting person. 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The RSUs vest in equal one-third increments over three years beginning on February 28, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"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."}],"balance_after":251199,"source":{"system":"sec-edgar","filing":"0001941365-26-000043","document":"wk-form4_1773865801.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1591630/000194136526000043/wk-form4_1773865801.xml","form_type":"4"}},{"id":834347,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":39133,"kind":"person","name":"Kendrick Bruce Alan","position":1,"cik":"0001955149","reported_name":"Kendrick Bruce Alan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & Chief HR Officer"}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-03-18T20:29:57.000Z","date":"2026-03-16","kind":"grant","planned":false,"acquired":true,"shares":42476,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of restricted stock units (\"RSUs\") granted to the reporting person. 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The RSUs vest in equal one-third increments over three years beginning on February 28, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 60,935 RSUs that have not yet vested."}],"balance_after":197898,"source":{"system":"sec-edgar","filing":"0001941365-26-000042","document":"wk-form4_1773865794.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1941365/000194136526000042/wk-form4_1773865794.xml","form_type":"4"}},{"id":834483,"issuer":{"id":4647,"kind":"organization","name":"MasterBrand, Inc."},"owners":[{"id":40798,"kind":"person","name":"Horton Andrean","position":1,"cik":"0001661135","reported_name":"Horton Andrean","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, CLO & Secretary"}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-03-18T20:29:50.000Z","date":"2026-03-16","kind":"grant","planned":false,"acquired":true,"shares":56432,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of restricted stock units (\"RSUs\") granted to the reporting person. 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