Martin Marietta Materials Inc
MLM- Exchange
- NYSE
- Industry
- Mining & Quarrying of Nonmetallic Minerals (No Fuels)
- SEC CIK
- 0000916076
No open-market purchases or sales by Martin Marietta Materials Inc insiders were filed in the last 90 days; 1,079 institutions reported holding it in 13F filings for Q2 2026, worth $34.2B in total; 4 superinvestors hold it, including TCI Fund Management and Gardner Russo & Quinn.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Martin Marietta Materials Inc insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 0 filings
- Insiders trading
- 0
- Net value
- $0
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Martin Marietta Materials Inc, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Petro Michael J | SVP and CFO | 24,322 | Sep 2, 2026 | 6 |
| Wajsgras David C | Director | 5,106 | Sep 2, 2026 | 5 |
| Pike Thomas | Director | 5,029 | Sep 2, 2026 | 5 |
| Lyons Martin J | Director | 442 | Sep 2, 2026 | 3 |
| Niemann Philipp | Director | 337 | Aug 25, 2026 | 1 |
| Delly Gayla J | Director | 313 | May 18, 2026 | 1 |
| Perez Laree E | Director | 15,730 | May 18, 2026 | 1 |
| Slager Donald W | Director | 5,064 | May 18, 2026 | 1 |
| Ables Dorothy M | Director | 4,221 | May 18, 2026 | 1 |
| Mack Mary T | Director | 914 | May 18, 2026 | 1 |
| Foxx Anthony R | Director | 2,615 | May 18, 2026 | 1 |
| Samborski Christopher William | EVP, COO | 21,762 | May 5, 2026 | 1 |
| McCunniff Donald A. | EVP and CHRO | 7,518 | Mar 3, 2026 | 4 |
| Nye C Howard | Chairman, Pres & CEO | 176,038 | Mar 3, 2026 | 5 |
| Schoen George Frederick | EVP, GC and Corp. Secretary | 23,673 | Mar 3, 2026 | 1 |
| Koraleski John J | Director | 8,822 | Mar 2, 2026 | 2 |
| Cardin Robert J | SVP, Controller & CAO | 12,459 | Feb 25, 2026 | 4 |
| Flynn Jason Paul | SVP and CIO | 5,494 | Feb 25, 2026 | 4 |
| Bar Roselyn R | Executive Vice President | 62,594 | Dec 17, 2025 | 2 |
| Cole Sue W | Director | 20,394 | May 16, 2025 | 0 |
| Kohn Bradley D | SVP, General Counsel and Secy | 3,625 | Feb 25, 2025 | 0 |
| Nickolas James AJ | EVP and CFO | 26,643 | Feb 25, 2025 | 0 |
| Brooks Oliver W | SVP - Enterprise Excellence | 5,178 | Feb 25, 2025 | 0 |
| Quillen Michael J | Director | 21,306 | May 10, 2024 | 0 |
| Bennett Kelly Gean | SVP, CHRO | 4,454 | Feb 27, 2024 | 0 |
| Mohr John P | SVP - CIO | 14,974 | Dec 5, 2023 | 0 |
| LaTorre Craig M | Sr. VP, CHRO | 8,634 | Dec 5, 2023 | 0 |
| Davis Smith W | Director | 5,255 | Mar 1, 2023 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jun 14, 2022 (view filing) | Jun 10 | 4 days | Mohr John PSVP - CIO | SSale | −0.45 | $321.76 | −$144.79 | 0.0%14.8K after | |
| Nov 18, 2022 (view filing) | Nov 18 | Same day | Cole Sue WDirector | SSale | −1.69K | $355.61 | −$599.2K | −7.4%21.2K after | |
| Aug 1, 2023 (view filing) | Jul 28 | 4 days | LaTorre Craig MSr. VP, CHRO | SSale | −500 | $447.09 | −$223.5K | −4.1%11.7K after | |
| Aug 22, 2023 (view filing) | Aug 21 | 1 day | LaTorre Craig MSr. VP, CHRO | SSale | −1.93K | $431.68 | −$834.9K | −16.6%9.73K after | |
| Feb 20, 2024 (view filing) | Feb 16 | 4 days | Cole Sue WDirector | SSale | −1.72K | $543.48 | −$937.0K | −8.0%19.8K after | 2 lots |
| Mar 6, 2024 (view filing) | Mar 5 | 1 day | Nye C HowardChairman, Pres & CEO | SSale | −15.0K | $604.26 | −$9.06M | −10.0%134.6K after | |
| Mar 6, 2024 (view filing) | Mar 5 | 1 day | Nye C HowardChairman, Pres & CEO | SSale | −5.00K | $604.26 | −$3.02M | −6.6%70.4K after | |
| Mar 15, 2024 (view filing) | Mar 14 | 1 day | Bar Roselyn REVP, General Counsel and Secy | SSale | −10.0K | $603.29 | −$6.03M | −14.3%60.0K after | |
| Mar 5, 2025 (view filing) | Mar 4 | 1 day | Petro Michael JSVP - Strategy and Development | PPurchase | +550 | $454.37 | +$249.9K | +6.5%8.98K after | |
| Mar 6, 2025 (view filing) | Mar 5 | 1 day | McCunniff Donald A.EVP and CHRO | SSale | −1.33K | $475.00 | −$632.7K | −27.4%3.52K after | |
| Aug 11, 2025 (view filing) | Aug 8 | 3 days | Perez Laree EDirector | SSale | −1.04K | $613.32 | −$636.6K | −6.3%15.4K after |