This filing is routine and not expected to affect MLM's stock price. Monitor future earnings reports for any operational changes under the new COO.
Price Chart
Executive Summary
Martin Marietta appointed Christopher W. Samborski as EVP and COO, effective May 1, 2026. Samborski was previously President of the West and Specialties Divisions and has been with the company since 2018. The filing includes new compensation details but represents a routine internal promotion with no material financial impact.
Key Facts
- Christopher W. Samborski appointed EVP and COO, effective May 1, 2026
- Previously President of West and Specialties Divisions
- New base salary of $775,000, target annual incentive 100% of base, target long-term incentive 260% of base
- One-time RSU grant of $5,000,000 vesting over 6-8 years
- Amended employment agreement provides severance of 3x base salary plus target bonus upon qualifying termination
Financial Impact
No material financial impact; executive compensation changes are routine for a promotion
Risk Factors
- No new risks identified
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 5 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 8-K Filing (Primary) | 0000950157-26-000549 |
| Exhibit: ex99-1.htm | 0000950157-26-000549 |
| Document: 0000950157-26-000549-index-headers.html | 0000950157-26-000549 |
| Document: 0000950157-26-000549-index.html | 0000950157-26-000549 |
| Document: 0000950157-26-000549.txt | 0000950157-26-000549 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 24, 2026 5w ago | 8-K | $533.11 $499.67 | ▼ −6.27% | ▼ −6.29% | $483.99 (−9.21%) |
Aug 18, 2026 6w ago | 8-K | $535.53 $494.44 | ▼ −7.67% | ▼ −5.72% | $483.99 (−9.62%) |
Aug 14, 2026 6w ago | 8-K | $538.66 $506.81 | ▼ −5.91% | ▼ −3.94% | $483.99 (−10.15%) |
Aug 12, 2026 7w ago | 8-K | $544.76 $509.96 | ▼ −6.39% | ▼ −4.64% | $483.99 (−11.16%) |
Aug 10, 2026 7w ago | 424B5 | $549.54 $511.98 | ▼ −6.83% | ▼ −5.92% | $483.99 (−11.93%) |
Aug 10, 2026 7w ago | 8-K | $549.54 $511.98 | ▼ −6.83% | ▼ −5.92% | $483.99 (−11.93%) |
Aug 5, 2026 8w ago | 8-K | $538.28 $508.94 | ▼ −5.45% | ▼ −6.05% | $483.99 (−10.09%) |
Jul 30, 2026 9w ago | 8-K | $540.00 $528.59 | ▼ −2.11% | ▼ −6.08% | $483.99 (−10.37%) |
Jul 30, 2026 9w ago | Press Release | $540.00 $528.59 | ▼ −2.11% | ▼ −6.08% | $483.99 (−10.37%) |
Jul 9, 2026 12w ago | Press Release | $577.72 $548.57 | ▲ +5.05% | ▲ +7.47% | $483.99 (+16.22%) |
US Market Status
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