---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-059534"
form_type: "8-K"
ticker: "AWI"
cik: "0000007431"
company_name: "ARMSTRONG WORLD INDUSTRIES INC"
filed_at: "2025-04-29T23:59:59+00:00"
generated_at: "2026-05-23T04:25:22.819675+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Armstrong Q1 net sales +17% to $382.7M, diluted EPS $1.58 (+16%), reaffirms FY2025 guidance

## Summary
- Net sales $382.7M (+17.3% YoY) driven by acquisitions and Mineral Fiber AUV growth; operating income $98.5M (+14.4%).
- Diluted EPS $1.58 (+16.2%); adjusted diluted EPS $1.66 (+20.3%); adjusted EBITDA $129M (+16.2%).
- Mineral Fiber segment net sales $245.1M (+2.3%), op. income $84.5M (+6.7%) on favorable AUV and productivity.
- Architectural Specialties net sales $137.6M (+58.7%), op. income $14.8M (+92.2%) from 2024 acquisitions and organic growth.
- FY2025 guidance reaffirmed: net sales $1.57-1.61B, adj. EBITDA $525-545M, adj. diluted EPS $6.85-7.15.

## SEC filing metadata
- accession: 0000950170-25-059534
- form_type: 8-K
- ticker: AWI
- cik: 0000007431
- company_name: ARMSTRONG WORLD INDUSTRIES INC
- filed_at: 2025-04-29T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- 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/7431/000095017025059534/0000950170-25-059534-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/7431/000095017025059534/awi-20250429.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-059534
- JSON: https://secwatch.observer/filing/0000950170-25-059534.json
- Plain text: https://secwatch.observer/filing/0000950170-25-059534.txt

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