Martin Marietta Materials, Inc.
MLMLast close · Oct 16, 2026500.84+9.61 (+1.96%)
Market cap$30.1B
Between Feb 23, 2026 and Sep 1, 2026, Martin Marietta Materials (MLM) insiders filed 33 Form 4 transactions: no sale and no open-market purchase. 33 other filings were grants, exercises or gifts, which say nothing about buying or selling.
33
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Form 4 transactions
| Date | Insider | Title | Code | Plan | Shares | Price | Value |
|---|---|---|---|---|---|---|---|
| 2026-09-01 | Petro Michael J | SVP and CFO | A | 9,331 | 0.00 | $0 | |
| 2026-08-31 | WAJSGRAS DAVID C | Director | A | 78 | 518.70 | $40,458.6 | |
| 2026-08-31 | Pike Thomas | Director | A | 66 | 518.70 | $34,234.2 | |
| 2026-08-31 | LYONS MARTIN J | Director | A | 68 | 518.70 | $35,271.6 | |
| 2026-08-21 | Niemann Philipp | Director | A | 337 | 0.00 | $0 | |
| 2026-08-03 | Petro Michael J | SVP and CFO | F | 368 | 542.27 | $199,555.4 | |
| 2026-05-29 | WAJSGRAS DAVID C | Director | A | 69 | 581.64 | $40,133.2 | |
| 2026-05-29 | Pike Thomas | Director | A | 59 | 581.64 | $34,316.8 | |
| 2026-05-29 | LYONS MARTIN J | Director | A | 61 | 581.64 | $35,480 | |
| 2026-05-14 | WAJSGRAS DAVID C | Director | A | 313 | 0.00 | $0 | |
| 2026-05-14 | SLAGER DONALD W | Director | A | 313 | 0.00 | $0 | |
| 2026-05-14 | Pike Thomas | Director | A | 313 | 0.00 | $0 | |
| 2026-05-14 | PEREZ LAREE E | Director | A | 313 | 0.00 | $0 | |
| 2026-05-14 | Mack Mary T | Director | A | 313 | 0.00 | $0 | |
| 2026-05-14 | LYONS MARTIN J | Director | A | 313 | 0.00 | $0 | |
| 2026-05-14 | Foxx Anthony R | Director | A | 313 | 0.00 | $0 | |
| 2026-05-14 | DELLY GAYLA J | Director | A | 313 | 0.00 | $0 | |
| 2026-05-14 | Ables Dorothy M | Director | A | 313 | 0.00 | $0 | |
| 2026-05-01 | Samborski Christopher William | EVP, COO | A | 8,101 | 0.00 | $0 | |
| 2026-03-01 | Schoen George Frederick | EVP, GC and Corp. Secretary | A | 23,673 | 0.00 | $0 | |
| 2026-03-01 | Petro Michael J | SVP and CFO | A | 2,960 | 0.00 | $0 | |
| 2026-03-01 | Nye C Howard | Chairman, Pres & CEO | A | 5,919 | 0.00 | $0 | |
| 2026-03-01 | McCunniff Donald A. | EVP and CHRO | A | 2,960 | 0.00 | $0 | |
| 2026-02-27 | WAJSGRAS DAVID C | Director | A | 56 | 676.57 | $37,887.9 | |
| 2026-02-27 | Pike Thomas | Director | A | 47 | 676.57 | $31,798.8 | |
| 2026-02-27 | KORALESKI JOHN J | Director | A | 69 | 676.57 | $46,683.3 | |
| 2026-02-23 | Petro Michael J | SVP and CFO | F | 211 | 683.60 | $144,239.6 | |
| 2026-02-24 | Petro Michael J | SVP and CFO | F | 94 | 696.85 | $65,503.9 | |
| 2026-02-23 | Nye C Howard | Chairman, Pres & CEO | F | 1,805 | 683.60 | $1.2M | |
| 2026-02-24 | Nye C Howard | Chairman, Pres & CEO | F | 1,221 | 696.85 | $850,853.9 | |
| 2026-02-23 | McCunniff Donald A. | EVP and CHRO | F | 192 | 683.60 | $131,251.2 | |
| 2026-02-23 | Flynn Jason Paul | SVP and CIO | F | 177 | 683.60 | $120,997.2 | |
| 2026-02-24 | Flynn Jason Paul | SVP and CIO | F | 30 | 696.85 | $20,905.5 |
Codes are the SEC's: P open-market purchase, S open-market sale; M exercise, F tax withholding, A grant and G gift are routine. A 10b5-1 flag means the trade ran under a plan adopted in advance. Method notes in where the numbers come from.