---
schema_version: "secwatch.filing_event.v1"
accession: "0000950157-25-000556"
form_type: "8-K"
ticker: "MLM"
cik: "0000916076"
company_name: "MARTIN MARIETTA MATERIALS INC"
filed_at: "2025-07-08T23:59:59+00:00"
generated_at: "2026-05-18T09:13:37.861991+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Martin Marietta appoints Michael J. Petro as CFO, replacing interim CFO Cardin

## Summary
- Michael J. Petro named SVP and CFO effective July 8, 2025; previously led Strategy and Development.
- Robert J. Cardin returns to his role as SVP, Controller and Chief Accounting Officer after interim CFO stint since April 2025.
- Petro's base salary increased to $600,000; receives one-time RSU grant of $1,000,000 vesting in 5 years.
- Target annual incentive remains 90% of base salary; target long-term incentive remains 200% of base salary.

## SEC filing metadata
- accession: 0000950157-25-000556
- form_type: 8-K
- ticker: MLM
- cik: 0000916076
- company_name: MARTIN MARIETTA MATERIALS INC
- filed_at: 2025-07-08T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/916076/000095015725000556/0000950157-25-000556-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/916076/000095015725000556/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950157-25-000556
- JSON: https://secwatch.observer/filing/0000950157-25-000556.json
- Plain text: https://secwatch.observer/filing/0000950157-25-000556.txt

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