---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-341412"
form_type: "8-K"
ticker: "MLM"
cik: "0000916076"
company_name: "MARTIN MARIETTA MATERIALS INC"
filed_at: "2026-08-10T13:08:14+00:00"
generated_at: "2026-08-10T13:09:15.332539+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Martin Marietta clears regulatory hurdles for Lhoist North America buy; close expected Q3 2026

## Summary
- All necessary regulatory approvals for LNA acquisition received Aug 5, 2026; deal expected to close Q3 2026.
- LNA 2025 sales $1.75B, net income $513.8M; total assets $1.70B as of Dec 31, 2025.
- LNA 2024 sales $1.67B, net income $438.6M; audited financials restated for SEC compliance.
- Pro forma combined financials filed; LNA has $955.6M long-term debt and $370.4M equity.
- Acquisition via Securities Sale Agreement with LNA Holding SRL dated June 27, 2026.

## SEC filing metadata
- accession: 0001193125-26-341412
- form_type: 8-K
- ticker: MLM
- cik: 0000916076
- company_name: MARTIN MARIETTA MATERIALS INC
- filed_at: 2026-08-10T13:08:14+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/916076/000119312526341412/0001193125-26-341412-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/916076/000119312526341412/d129878d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-341412
- JSON: https://secwatch.observer/filing/0001193125-26-341412.json
- Plain text: https://secwatch.observer/filing/0001193125-26-341412.txt

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