---
schema_version: "secwatch.filing_event.v1"
accession: "0001140361-24-040476"
form_type: "8-K"
ticker: "MBC"
cik: "0001941365"
company_name: "MasterBrand, Inc."
filed_at: "2024-09-06T23:59:59+00:00"
generated_at: "2026-05-31T06:07:34.004706+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.1
calibrated_materiality_score: 0.1
confidence: "high"
source: SEC EDGAR
---

# MasterBrand amends bylaws to update advance notice disclosure requirements

## Summary
- Board adopted amended and restated bylaws effective September 4, 2024.
- Amends disclosure requirements under advance notice provisions and a related defined term.
- Change is part of periodic corporate governance review; no other material amendments.

## SEC filing metadata
- accession: 0001140361-24-040476
- form_type: 8-K
- ticker: MBC
- cik: 0001941365
- company_name: MasterBrand, Inc.
- filed_at: 2024-09-06T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.1
- calibrated_materiality_score: 0.1
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1941365/000114036124040476/0001140361-24-040476-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1941365/000114036124040476/ef20035617_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001140361-24-040476
- JSON: https://secwatch.observer/filing/0001140361-24-040476.json
- Plain text: https://secwatch.observer/filing/0001140361-24-040476.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.