---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-22-025069"
form_type: "8-K"
ticker: "MLM"
cik: "0000916076"
company_name: "MARTIN MARIETTA MATERIALS INC"
filed_at: "2022-11-14T23:59:59+00:00"
generated_at: "2026-06-21T21:57:29.748860+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "high"
source: SEC EDGAR
---

# Martin Marietta amends bylaws to adopt universal proxy rules and enhance shareholder nomination procedures

## Summary
- Amendments effective Nov. 10, 2022 implement SEC Rule 14a-19 universal proxy requirements for director elections.
- Shareholders must now provide enhanced information and representations when submitting nominations or proposals.
- New rules require shareholder to appear at meeting, limit number of nominees, and complete director questionnaire.
- Additional changes permit remote shareholder meetings and electronic director consents.
- Changes do not apply to Rule 14a-8 proposals or proxy access nominations (except director questionnaire requirement).

## SEC filing metadata
- accession: 0000950170-22-025069
- form_type: 8-K
- ticker: MLM
- cik: 0000916076
- company_name: MARTIN MARIETTA MATERIALS INC
- filed_at: 2022-11-14T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.2
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/916076/000095017022025069/0000950170-22-025069-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/916076/000095017022025069/mlm-20221110.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-22-025069
- JSON: https://secwatch.observer/filing/0000950170-22-025069.json
- Plain text: https://secwatch.observer/filing/0000950170-22-025069.txt

## Key facts
- Governance Changes
  MARTIN MARIETTA MATERIALS INC: Amended and restated bylaws to implement universal proxy rules and update procedural requirements for shareholder director nominations, including enhanced disclosure, proxy card color, and other administrative changes (effective 2022-11-10).
  - Change: bylaw amendment
  - Effective: 2022-11-10
  source text: On November 10, 2022, the Board of Directors (the “Board”) of Martin Marietta Materials, Inc. (the “Company”) amended and restated the Company’s Restated Bylaws (as so amended and restated, the “Amended Bylaws”) effective as of such date.
  evidence_url: https://www.sec.gov/Archives/edgar/data/916076/000095017022025069/0000950170-22-025069-index.htm

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