There have been 50 recent insider transactions recorded for Martin Marietta Materials, Inc. (MLM), including 27 buys and 20 sells. Total insider buying was valued at $2.86M and total insider selling at $11.63M.
Notable insiders with recent activity include Mccunniff Donald A., Nye C Howard, Petro Michael J. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — MLM
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2026-03-01 |
Mccunniff Donald A. |
EVP and Chro |
RSU Award |
2,960 |
- |
- |
7,518 |
| 2026-03-01 |
Nye C Howard |
Chairman, Pres & CEO |
RSU Award |
5,919 |
- |
- |
176,038 |
| 2026-03-01 |
Petro Michael J |
SVP and CFO |
RSU Award |
2,960 |
- |
- |
15,359 |
| 2026-03-01 |
Schoen George Frederick |
EVP, Gc and Corp. Secretary |
Unknown |
- |
- |
- |
- |
| 2026-03-01 |
Schoen George Frederick |
EVP, Gc and Corp. Secretary |
RSU Award |
23,673 |
- |
- |
23,673 |
| 2026-02-27 |
Wajsgras David C |
Director |
RSU Award |
56 |
$676.57 |
$37.89K |
4,646 |
| 2026-02-27 |
Koraleski John J |
Director |
RSU Award |
69 |
$676.57 |
$46.68K |
8,822 |
| 2026-02-27 |
Pike Thomas |
Director |
RSU Award |
47 |
$676.57 |
$31.8K |
4,591 |
| 2026-02-24 |
Nye C Howard |
Chairman, Pres & CEO |
Tax Withholding of RSU |
1,221 |
$696.85 |
$850.85K |
170,119 |
| 2026-02-24 |
Cardin Robert J |
SVP, Controller & CAO |
Tax Withholding of RSU |
103 |
$696.85 |
$71.78K |
12,459 |
| 2026-02-24 |
Petro Michael J |
SVP and CFO |
Tax Withholding of RSU |
94 |
$696.85 |
$65.5K |
12,399 |
| 2026-02-24 |
Flynn Jason Paul |
SVP and CIO |
Tax Withholding of RSU |
30 |
$696.85 |
$20.91K |
5,494 |
| 2026-02-23 |
Mccunniff Donald A. |
EVP and Chro |
Tax Withholding of RSU |
192 |
$683.60 |
$131.25K |
4,558 |
| 2026-02-23 |
Nye C Howard |
Chairman, Pres & CEO |
Tax Withholding of RSU |
1,805 |
$683.60 |
$1.23M |
171,340 |
| 2026-02-23 |
Cardin Robert J |
SVP, Controller & CAO |
Tax Withholding of RSU |
209 |
$683.60 |
$142.87K |
12,562 |
| 2026-02-23 |
Petro Michael J |
SVP and CFO |
Tax Withholding of RSU |
211 |
$683.60 |
$144.24K |
12,493 |
| 2026-02-23 |
Flynn Jason Paul |
SVP and CIO |
Tax Withholding of RSU |
177 |
$683.60 |
$121K |
5,524 |
| 2026-02-20 |
Mccunniff Donald A. |
EVP and Chro |
RSU Award |
1,277 |
- |
- |
4,750 |
| 2026-02-20 |
Nye C Howard |
Chairman, Pres & CEO |
RSU Award |
2,216 |
$548.75 |
$1.22M |
166,740 |
| 2026-02-20 |
Cardin Robert J |
SVP, Controller & CAO |
RSU Award |
658 |
- |
- |
12,771 |
| 2026-02-20 |
Petro Michael J |
SVP and CFO |
RSU Award |
931 |
- |
- |
12,704 |
| 2026-02-20 |
Flynn Jason Paul |
SVP and CIO |
RSU Award |
592 |
$548.75 |
$324.86K |
5,106 |
| 2026-02-17 |
Nye C Howard |
Chairman, Pres & CEO |
Tax Withholding of RSU |
9,717 |
$666.53 |
$6.48M |
164,524 |
| 2026-02-17 |
Cardin Robert J |
SVP, Controller & CAO |
Tax Withholding of RSU |
822 |
$666.53 |
$547.89K |
12,113 |
| 2026-02-17 |
Petro Michael J |
SVP and CFO |
Tax Withholding of RSU |
758 |
$666.53 |
$505.23K |
11,773 |
| 2026-02-17 |
Flynn Jason Paul |
SVP and CIO |
Tax Withholding of RSU |
107 |
$666.53 |
$71.32K |
4,514 |
| 2025-12-16 |
Bar Roselyn R |
Executive Vice President |
Tax Withholding of RSU |
66 |
$629.49 |
$41.55K |
62,594 |
| 2025-12-16 |
Mccunniff Donald A. |
EVP and Chro |
Tax Withholding of RSU |
50 |
$629.49 |
$31.47K |
3,473 |
| 2025-12-16 |
Nye C Howard |
Chairman, Pres & CEO |
Tax Withholding of RSU |
298 |
$629.49 |
$187.59K |
151,876 |
| 2025-12-16 |
Cardin Robert J |
SVP, Controller & CAO |
Tax Withholding of RSU |
32 |
$629.49 |
$20.14K |
11,066 |
| 2025-12-02 |
Bar Roselyn R |
Executive Vice President |
Gift (Given) |
488 |
- |
- |
62,660 |
| 2025-12-01 |
Bar Roselyn R |
Executive Vice President |
Tax Withholding of RSU |
420 |
$615.25 |
$258.41K |
63,148 |
| 2025-12-01 |
Flynn Jason Paul |
SVP and CIO |
Tax Withholding of RSU |
123 |
$615.25 |
$75.68K |
4,399 |
| 2025-11-28 |
Wajsgras David C |
Director |
RSU Award |
61 |
$623.24 |
$38.02K |
4,590 |
| 2025-11-28 |
Koraleski John J |
Director |
RSU Award |
75 |
$623.24 |
$46.74K |
8,753 |
| 2025-11-28 |
Pike Thomas |
Director |
RSU Award |
51 |
$623.24 |
$31.79K |
4,544 |
| 2025-08-29 |
Wajsgras David C |
Director |
RSU Award |
61 |
$616.40 |
$37.6K |
4,529 |
| 2025-08-29 |
Koraleski John J |
Director |
RSU Award |
76 |
$616.40 |
$46.85K |
8,678 |
| 2025-08-29 |
Pike Thomas |
Director |
RSU Award |
51 |
$616.40 |
$31.44K |
4,493 |
| 2025-08-14 |
Flynn Jason Paul |
SVP and CIO |
Unknown |
- |
- |
- |
4,522 |
| 2025-08-08 |
Perez Laree E |
Director |
Informative Sell |
1,038 |
$613.32 |
$636.63K |
15,417 |
| 2025-07-08 |
Petro Michael J |
SVP and CFO |
RSU Award |
1,822 |
- |
- |
10,807 |
| 2025-05-30 |
Wajsgras David C |
Director |
RSU Award |
69 |
$547.55 |
$37.78K |
4,468 |
| 2025-05-30 |
Koraleski John J |
Director |
RSU Award |
85 |
$547.55 |
$46.54K |
8,602 |
| 2025-05-30 |
Pike Thomas |
Director |
RSU Award |
58 |
$547.55 |
$31.76K |
4,442 |
| 2025-05-15 |
Cole Sue W |
Director |
RSU Award |
308 |
$552.86 |
$170.28K |
20,394 |
| 2025-05-15 |
Wajsgras David C |
Director |
RSU Award |
308 |
$552.86 |
$170.28K |
4,399 |
| 2025-05-15 |
Koraleski John J |
Director |
RSU Award |
308 |
$552.86 |
$170.28K |
8,517 |
| 2025-05-15 |
Perez Laree E |
Director |
RSU Award |
308 |
$552.86 |
$170.28K |
16,455 |
| 2025-05-15 |
Slager Donald W |
Director |
RSU Award |
308 |
$552.86 |
$170.28K |
4,751 |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
