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MLM · Martin Marietta Materials Inc · Insider Trading

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$506.77 -0.82 (-0.16%)
Market Cap
$30.49B
Shares
60.07M
Volume · Oct 21 112.24K Avg daily vol (3M) 727.07K

Trades by corporate insiders — officers, directors and holders of more than 10% of the shares — disclosed to the SEC on Forms 4 and 5. Form 3 supplies initial ownership rather than a trade; Form 4 must be filed within two business days of the trade.

Date Insider Type Shares
2026-09-01
Petro Michael J
Award↑
9,331
2026-08-31
WAJSGRAS DAVID C
Award↑
78
2026-08-31
LYONS MARTIN J
Award↑
68
2026-08-31
Pike Thomas
Award↑
66
2026-08-21
Niemann Philipp
Award↑
337
2026-08-03
Petro Michael J
Tax↓
368
2026-05-29
LYONS MARTIN J
Award↑
61
2026-05-29
Pike Thomas
Award↑
59
2026-05-29
WAJSGRAS DAVID C
Award↑
69
2026-05-14
DELLY GAYLA J
Award↑
313
2026-05-14
SLAGER DONALD W
Award↑
313
2026-05-14
PEREZ LAREE E
Award↑
313
2026-05-14
Mack Mary T
Award↑
313
2026-05-14
WAJSGRAS DAVID C
Award↑
313
2026-05-14
Pike Thomas
Award↑
313
2026-05-14
LYONS MARTIN J
Award↑
313
2026-05-14
Ables Dorothy M
Award↑
313
2026-05-14
Foxx Anthony R
Award↑
313
2026-05-01
Samborski Christopher William
Award↑
8,101
2026-03-01
Schoen George Frederick
Award↑
23,673
2026-03-01
McCunniff Donald A.
Award↑
2,960
2026-03-01
Petro Michael J
Award↑
2,960
2026-03-01
Nye C Howard
Award↑
5,919
2026-02-27
WAJSGRAS DAVID C
Award↑
56
2026-02-27
KORALESKI JOHN J
Award↑
69
2026-02-27
Pike Thomas
Award↑
47
2026-02-24
Flynn Jason Paul
Tax↓
30
2026-02-24
Cardin Robert J
Tax↓
103
2026-02-24
Nye C Howard
Tax↓
1,221
2026-02-24
Petro Michael J
Tax↓
94
2026-02-23
Nye C Howard
Tax↓
1,805
2026-02-23
Petro Michael J
Tax↓
211
2026-02-23
McCunniff Donald A.
Tax↓
192
2026-02-23
Flynn Jason Paul
Tax↓
177
2026-02-23
Cardin Robert J
Tax↓
209
2026-02-20
Petro Michael J
Award↑
931
2026-02-20
Flynn Jason Paul
Award↑
592
2026-02-20
Cardin Robert J
Award↑
658
2026-02-20
McCunniff Donald A.
Award↑
1,277
2026-02-20
Flynn Jason Paul
Award↑
595
2026-02-20
Nye C Howard
Award↑
2,216
2026-02-20
Nye C Howard
Award↑
6,405
2026-02-17
Flynn Jason Paul
Tax↓
107
2026-02-17
Cardin Robert J
Tax↓
822
2026-02-17
Petro Michael J
Award↑
1,724
2026-02-17
Flynn Jason Paul
Award↑
222
2026-02-17
Nye C Howard
Award↑
22,365
2026-02-17
Cardin Robert J
Award↑
1,869
2026-02-17
Petro Michael J
Tax↓
758
2026-02-17
Nye C Howard
Tax↓
9,717
Legend Buy — open-market purchase Sell — open-market sale ↑ Shares acquired ↓ Shares disposed (gift, conversion, tax…)
Showing 1–50 of 491 transactions
Key facts CIK 916076 CUSIP 573284106 13F (30d) 170 filings 165 filers Visit website Investor relations