secwatch.observer — SEC 8-K summary
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Issuer:     MARTIN MARIETTA MATERIALS INC (MLM)
CIK:        0000916076
Form:       8-K
Filed at:   2026-04-27T23:59:59+00:00
Accession:  0000950157-26-000549
Event type: leadership
Sentiment:  neutral
Materiality: 0.50
Item codes: 5.02, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Martin Marietta appoints Christopher Samborski as EVP & COO effective May 1, 2026
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- Samborski previously President of West & Specialties; Kirk Light assumes those divisions.
- Base salary $775,000; target annual incentive 100% of base; LTIP target 260% of base.
- One-time RSU grant of $5M, vesting ratably on 6th, 7th, and 8th anniversaries.
- Severance: 3x base salary plus target bonus on termination without cause or good reason.
- Employment agreement includes 3-year post-termination non-compete and non-solicitation.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/916076/000095015726000549/0000950157-26-000549-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/916076/000095015726000549/form8-k.htm
  HTML page:      https://secwatch.observer/filing/0000950157-26-000549

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer