---
schema_version: "secwatch.filing_event.v1"
accession: "0000950157-24-001472"
form_type: "8-K"
ticker: "MLM"
cik: "0000916076"
company_name: "MARTIN MARIETTA MATERIALS INC"
filed_at: "2024-11-04T23:59:59+00:00"
generated_at: "2026-05-30T06:44:26.579395+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Martin Marietta issues $1.5B in senior notes (5.150% due 2034, 5.500% due 2054)

## Summary
- Issued $750M of 5.150% Senior Notes due 2034 and $750M of 5.500% Senior Notes due 2054.
- Net proceeds used to repay revolver and securitization borrowings; remainder for general corporate purposes.
- Notes are senior unsecured, rank equally with existing senior debt, effectively subordinated to secured debt and subsidiary liabilities.
- Optional redemption: make-whole +15bps (2034) or +20bps (2054) prior to Par Call Date; thereafter at par.
- Change of control triggers repurchase at 101% of principal plus accrued interest.

## SEC filing metadata
- accession: 0000950157-24-001472
- form_type: 8-K
- ticker: MLM
- cik: 0000916076
- company_name: MARTIN MARIETTA MATERIALS INC
- filed_at: 2024-11-04T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 1.01, 2.03, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/916076/000095015724001472/0000950157-24-001472-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/916076/000095015724001472/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950157-24-001472
- JSON: https://secwatch.observer/filing/0000950157-24-001472.json
- Plain text: https://secwatch.observer/filing/0000950157-24-001472.txt

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