---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-002826"
form_type: "8-K"
ticker: "MLM"
cik: "0000916076"
company_name: "MARTIN MARIETTA MATERIALS INC"
filed_at: "2023-02-15T23:59:59+00:00"
generated_at: "2026-06-19T12:47:27.132023+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "low"
source: SEC EDGAR
---

# Martin Marietta announces Q4/FY2022 results; specific figures not in filing text

## Summary
- Press release issued on February 15, 2023, covering Q4 and full-year 2022 financial results.
- Conference call held on February 15, 2023; replay available on company website.
- Non-GAAP financial measures detail provided on investor relations page of martinmarietta.com.

## SEC filing metadata
- accession: 0000950170-23-002826
- form_type: 8-K
- ticker: MLM
- cik: 0000916076
- company_name: MARTIN MARIETTA MATERIALS INC
- filed_at: 2023-02-15T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: low
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/916076/000095017023002826/0000950170-23-002826-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/916076/000095017023002826/mlm-20230215.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-002826
- JSON: https://secwatch.observer/filing/0000950170-23-002826.json
- Plain text: https://secwatch.observer/filing/0000950170-23-002826.txt

## Key facts
- Earnings Releases
  MARTIN MARIETTA MATERIALS INC reported financial results for December 2022 and year ended December 31, 2022.
  - Period: December 2022 and year ended December 31, 2022
  - Result: reported results
  source text: On February 15, 2023, the Company announced financial results for the December 2022 and year ended December 31, 2022. The press release, dated February 15, 2023, is furnished as Exhibit 99.1 to this report and is incorporated by reference herein.
  evidence_url: https://www.sec.gov/Archives/edgar/data/916076/000095017023002826/0000950170-23-002826-index.htm

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