---
schema_version: "secwatch.filing_event.v1"
accession: "0000950157-25-001042"
form_type: "8-K"
ticker: "MLM"
cik: "0000916076"
company_name: "MARTIN MARIETTA MATERIALS INC"
filed_at: "2026-01-02T23:59:59+00:00"
generated_at: "2026-05-16T11:52:32.472327+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Martin Marietta delays Quikrete asset exchange close to Q1 2026 from Q4 2025

## Summary
- Asset exchange with Quikrete Holdings, Inc., announced October 2, 2025, now expected to close in Q1 2026 (previously Q4 2025).
- Delay attributed to remaining customary closing conditions; no change in transaction structure disclosed.
- Martin Marietta will provide further updates as the transaction progresses.

## SEC filing metadata
- accession: 0000950157-25-001042
- form_type: 8-K
- ticker: MLM
- cik: 0000916076
- company_name: MARTIN MARIETTA MATERIALS INC
- filed_at: 2026-01-02T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.4
- confidence: high
- sec_items: 7.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/916076/000095015725001042/0000950157-25-001042-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/916076/000095015725001042/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950157-25-001042
- JSON: https://secwatch.observer/filing/0000950157-25-001042.json
- Plain text: https://secwatch.observer/filing/0000950157-25-001042.txt

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