---
schema_version: "secwatch.filing_event.v1"
accession: "0001941365-26-000054"
form_type: "8-K"
ticker: "MBC"
cik: "0001941365"
company_name: "MasterBrand, Inc."
filed_at: "2026-05-05T23:59:59+00:00"
generated_at: "2026-05-14T23:34:36.545414+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# MasterBrand posts Q1 net loss of $15.4M; sales down 6.4% YoY to $618M

## Summary
- Net loss of $15.4M vs net income of $13.3M in Q1 2025; diluted EPS loss of $0.12.
- Adjusted EBITDA margin fell 570 bps to 4.5% from 10.2%; gross tariff costs ~$25M in Q1.
- Pending combination with American Woodmark expected to close in Q2 2026.
- Provides Q2 2026 financial outlook; sales down 6.4% YoY due to market decline.
- Gross profit margin decreased 530 bps to 25.3% on lower volume and tariff impact.

## SEC filing metadata
- accession: 0001941365-26-000054
- form_type: 8-K
- ticker: MBC
- cik: 0001941365
- company_name: MasterBrand, Inc.
- filed_at: 2026-05-05T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1941365/000194136526000054/0001941365-26-000054-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1941365/000194136526000054/mbc-20260505.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001941365-26-000054
- JSON: https://secwatch.observer/filing/0001941365-26-000054.json
- Plain text: https://secwatch.observer/filing/0001941365-26-000054.txt

## Source-grounded claims
- claim_id: ef7c33b6a28a4c1b60be1138ceb5e084a289acbe
  claim: MasterBrand, Inc. reported first quarter 2026 results: revenue $618.0 million, net income $(15.4) million, EPS $(0.12) per diluted share.
  evidence_excerpt: First Quarter 2026 Net sales were $618.0 million, a decrease of 6.4% compared to the first quarter of 2025, following a mid-single-digit market decline and a slower pace of housing completions. Gross profit was $156.6 million , compared to $202.2 million in the prior year. Gross profit margin decreased 530 basis points to 25.3% on lower volume and the related unfavorable fixed cost leverage and unfavorable product mix. Material, personnel and utility inflation, combined with the impact of tariffs, contributed to overall margin pressure. These headwinds were partially offset by continuous improvement initiatives and targeted tariff mitigation actions. Gross tariff costs were approximately $25 million in the first quarter, and mitigation plans continue to progress. Net (loss) income was $(15.4) million , compared to $13.3 million in the first quarter of 2025, and net (loss) income margin was (2.5)%, compared to net income margin of 2.0% in the prior year, as a result of lower gross profi
  evidence_url: https://www.sec.gov/Archives/edgar/data/1941365/000194136526000054/0001941365-26-000054-index.htm

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