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United States Construction Materials

Martin Marietta Materials Inc (MLM)

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The most recent insider trading activity occurred on August 8, 2025, with a SELL transaction by Laree E. Perez valued at $636,626.16. Prior to this, on March 5, 2025, Donald A. McCunniff made a SELL transaction worth $632,700.00. A BUY transaction was also noted on March 4, 2025, by Michael J. Petro for $249,903.50.
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Ticker: MLM Exchange: NYS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
PEREZ LAREE E
2 sales — total 1,259,738 USD
Sale 8 Aug 2025
Value US$555,030.41 | Price 71.66 | Shares 43,972
Proposed sale 8 Aug 2025
Value US$1,451,332.64 | Price 264.33 | Shares 87,625
Sale 5 Mar 2025
Value US$2,489,906.72 | Price 459.90 | Shares 85,598
Buy 4 Mar 2025
Value US$249,903.50 | Price 454.37 | Shares 550
Proposed sale 26 Feb 2025
Value US$653,066.28 | Price 490.29 | Shares 1,332
Proposed sale 19 Mar 2024
Value US$1,990,194.60 | Price 596.76 | Shares 3,335
Sale 14 Mar 2024
Value US$6,032,900.00 | Price 603.29 | Shares 10,000
Proposed sale 13 Mar 2024
Value US$6,049,200.00 | Price 604.92 | Shares 10,000
Sale 5 Mar 2024
Value US$3,021,300.00 | Price 604.26 | Shares 5,000
Sale 5 Mar 2024
Value US$9,063,900.00 | Price 604.26 | Shares 15,000
Proposed sale 5 Mar 2024
Value US$12,038,000.00 | Price 601.90 | Shares 20,000
Sale 16 Feb 2024
Value US$456,248.46 | Price 541.22 | Shares 843
Sale 16 Feb 2024
Value US$480,708.84 | Price 545.64 | Shares 881
Proposed sale 15 Feb 2024
Value US$454,764.78 | Price 539.46 | Shares 843
Proposed sale 15 Feb 2024
Value US$475,264.26 | Price 539.46 | Shares 881
Proposed sale 15 Feb 2024
Value US$899,279.82 | Price 539.46 | Shares 1,667
Sale 21 Aug 2023
Value US$834,869.12 | Price 431.68 | Shares 1,934
Sale 28 Jul 2023
Value US$223,545.00 | Price 447.09 | Shares 500
Proposed sale 28 Jul 2023
Value US$3,701,824.00 | Price 458.26 | Shares 8,078
Proposed sale 19 May 2023
Value US$1,145,974.20 | Price 407.82 | Shares 2,810
Sale 18 Nov 2022
Value US$599,195.60 | Price 355.61 | Shares 1,685
Sale 10 Jun 2022
Value US$144.40 | Price 321.75 | Shares 0
Sale 10 Mar 2021
Value US$3,378,400.00 | Price 337.84 | Shares 10,000
Sale 10 Mar 2021
Value US$2,346,964.92 | Price 337.79 | Shares 6,948
Sale 9 Mar 2021
Value US$1,022,603.12 | Price 335.06 | Shares 3,052
Sale 24 Nov 2020
Value US$2,747,455.54 | Price 274.64 | Shares 10,004
Sale 10 Sep 2020
Value US$96,888.73 | Price 207.03 | Shares 468
Sale 8 Sep 2020
Value US$156,885.00 | Price 209.18 | Shares 750
Sale 10 Jun 2020
Value US$280,442.52 | Price 207.74 | Shares 1,350
Sale 5 Jun 2020
Value US$3,014,608.96 | Price 225.23 | Shares 13,385
Sale 5 Jun 2020
Value US$793,804.20 | Price 226.80 | Shares 3,500
Sale 21 May 2020
Value US$1,180,272.27 | Price 177.62 | Shares 6,645
Buy 13 May 2020
Value US$164,079.90 | Price 164.08 | Shares 1,000
Buy 6 May 2020
Value US$183,540.00 | Price 183.54 | Shares 1,000
Buy 31 Mar 2020
Value US$1,458.30 | Price 177.24 | Shares 8
Buy 31 Dec 2019
Value US$1,455.42 | Price 277.43 | Shares 5
Buy 31 Dec 2019
Value US$6,095.04 | Price 277.35 | Shares 22
Sale 13 Dec 2019
Value US$1,163,398.92 | Price 276.87 | Shares 4,202
Buy 25 Nov 2019
Value US$260,227.30 | Price 260.23 | Shares 1,000
Buy 30 Sep 2019
Value US$1,452.47 | Price 271.29 | Shares 5
Buy 30 Sep 2019
Value US$3,741.10 | Price 271.35 | Shares 14
Sale 30 Aug 2019
Value US$1,886,165.74 | Price 253.52 | Shares 7,440
Sale 1 Aug 2019
Value US$696,576.55 | Price 246.93 | Shares 2,821
Sale 1 Aug 2019
Value US$2,734,890.35 | Price 243.66 | Shares 11,224
Buy 28 Jun 2019
Value US$1,264.93 | Price 226.65 | Shares 6
Buy 28 Jun 2019
Value US$2,196.66 | Price 226.67 | Shares 10
Sale 10 Jun 2019
Value US$191,005.26 | Price 231.80 | Shares 824
Sale 6 May 2019
Value US$700,872.73 | Price 220.19 | Shares 3,183
Sale 6 May 2019
Value US$3,234,034.38 | Price 220.48 | Shares 14,668
Buy 29 Mar 2019
Value US$1,261.91 | Price 200.34 | Shares 6
Buy 29 Mar 2019
Value US$1,959.63 | Price 200.33 | Shares 10
Sale 5 Mar 2019
Value US$292,610.85 | Price 195.07 | Shares 1,500
Sale 28 Feb 2019
Value US$295,891.53 | Price 189.31 | Shares 1,563
Sale 27 Feb 2019
Value US$125,994.00 | Price 190.90 | Shares 660
Buy 31 Dec 2018
Value US$1,258.33 | Price 168.81 | Shares 7
Buy 31 Dec 2018
Value US$1,954.17 | Price 168.90 | Shares 12
Buy 14 Dec 2018
Value US$174,069.80 | Price 174.07 | Shares 1,000
Sale 9 Nov 2018
Value US$273,798.00 | Price 185.50 | Shares 1,476
Buy 1 Oct 2018
Value US$232.15 | Price 185.60 | Shares 1
Buy 28 Sep 2018
Value US$1,255.09 | Price 185.91 | Shares 7
Buy 28 Sep 2018
Value US$1,949.12 | Price 185.79 | Shares 10
Sale 22 Aug 2018
Value US$459,731.48 | Price 204.33 | Shares 2,250
Buy 30 Jul 2018
Value US$710,045.00 | Price 202.87 | Shares 3,500
Buy 27 Jul 2018
Value US$499,332.00 | Price 208.06 | Shares 2,400
Buy 2 Jul 2018
Value US$212.38 | Price 221.16 | Shares 1
Buy 29 Jun 2018
Value US$1,148.23 | Price 222.48 | Shares 5
Buy 29 Jun 2018
Value US$1,016.82 | Price 222.50 | Shares 5
Sale 13 Jun 2018
Value US$975,031.17 | Price 230.72 | Shares 4,226
Sale 11 May 2018
Value US$157,013.82 | Price 215.98 | Shares 727
Sale 11 May 2018
Value US$1,124,604.75 | Price 213.36 | Shares 5,271
Sale 9 May 2018
Value US$1,788,215.90 | Price 212.66 | Shares 8,409
Sale 9 May 2018
Value US$637,499.10 | Price 212.50 | Shares 3,000
Buy 2 Apr 2018
Value US$146.51 | Price 203.29 | Shares 1
Buy 29 Mar 2018
Value US$1,145.75 | Price 202.93 | Shares 6
Buy 29 Mar 2018
Value US$1,014.63 | Price 203.17 | Shares 5
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2025-08-11 2025-08-08 S Sale
2.1
PEREZ LAREE E
Non-Executive Director
43,972 +43.1%
71.66
US$555,030 		43,972 +43.1% 71.66 US$555,030
2025-08-08 2025-08-08 PrS Proposed sale
2.1
PEREZ LAREE E

Director

Non-Executive Director
87,625
264.33
US$1,451,333 		87,625 264.33 US$1,451,333
2025-03-06 2025-03-05 S Sale
1.7
McCunniff Donald A.

EVP and CHRO

Officer
85,598 -23.2%
459.90
US$2,489,907 		85,598 -23.2% 459.90 US$2,489,907
2025-03-05 2025-03-04 B Purchase
3.1
Petro Michael J

SVP - Strategy and Development

Officer
550 +6.5%
454.37
US$249,904 		550 +6.5% 454.37 US$249,904
2025-02-26 2025-02-26 PrS Proposed sale
1.7
McCunniff Donald A.

Officer

Officer
1,332
490.29
US$653,066 		1,332 490.29 US$653,066
2024-03-19 2024-03-19 PrS Proposed sale
2.6
Mohr John P

Former SVP, CIO
3,335
596.76
US$1,990,195 		3,335 596.76 US$1,990,195
2024-03-15 2024-03-14 S Sale
2.6
BAR ROSELYN R

EVP, General Counsel and Secy

Officer
10,000 -14.3%
603.29
US$6,032,900 		10,000 -14.3% 603.29 US$6,032,900
2024-03-14 2024-03-13 PrS Proposed sale
2.6
BAR ROSELYN R

Officer

Officer
10,000
604.92
US$6,049,200 		10,000 604.92 US$6,049,200
2024-03-06 2024-03-05 S Sale
2.8
Nye C Howard

Chairman, Pres & CEO

Executive Director
5,000 -6.6%
604.26
US$3,021,300 		5,000 -6.6% 604.26 US$3,021,300
2024-03-06 2024-03-05 S Sale
2.8
Nye C Howard

Chairman, Pres & CEO

Executive Director
15,000 -10.0%
604.26
US$9,063,900 		15,000 -10.0% 604.26 US$9,063,900
2024-03-05 2024-03-05 PrS Proposed sale
2.8
Nye C Howard

Officer; Director

Executive Director
20,000
601.90
US$12,038,000 		20,000 601.90 US$12,038,000
2024-02-20 2024-02-16 S Sale
2.0
COLE SUE W
Non-Executive Director
843 -4.1%
541.22
US$456,248 		843 -4.1% 541.22 US$456,248
2024-02-20 2024-02-16 S Sale
2.0
COLE SUE W
Non-Executive Director
881 -4.1%
545.64
US$480,709 		881 -4.1% 545.64 US$480,709
2024-02-15 2024-02-15 PrS Proposed sale
2.0
COLE SUE W

Director

Non-Executive Director
843
539.46
US$454,765 		843 539.46 US$454,765
2024-02-15 2024-02-15 PrS Proposed sale
2.0
COLE SUE W

Director

Non-Executive Director
881
539.46
US$475,264 		881 539.46 US$475,264
2024-02-15 2024-02-15 PrS Proposed sale
2.1
LaTorre Craig M

Former Sr. VP, CHRO
1,667
539.46
US$899,280 		1,667 539.46 US$899,280
2023-08-22 2023-08-21 S Sale
2.1
LaTorre Craig M

Sr. VP, CHRO

Officer
1,934 -16.6%
431.68
US$834,869 		1,934 -16.6% 431.68 US$834,869
2023-08-01 2023-07-28 S Sale
2.1
LaTorre Craig M

Sr. VP, CHRO

Officer
500 -4.1%
447.09
US$223,545 		500 -4.1% 447.09 US$223,545
2023-07-27 2023-07-28 PrS Proposed sale
2.1
LaTorre Craig M

Officer

Officer
8,078
458.26
US$3,701,824 		8,078 458.26 US$3,701,824
2023-05-19 2023-05-19 PrS Proposed sale
Davis Smith W

Former Director

Non-Executive Director
2,810
407.82
US$1,145,974 		2,810 407.82 US$1,145,974
2022-11-18 2022-11-18 S Sale
2.0
COLE SUE W
Non-Executive Director
1,685 -7.4%
355.61
US$599,196 		1,685 -7.4% 355.61 US$599,196
2022-06-14 2022-06-10 S Sale
2.6
Mohr John P

SVP - CIO

Officer
0 -0.0%
321.75
US$144 		0 -0.0% 321.75 US$144
2021-03-11 2021-03-10 S Sale
2.8
Nye C Howard

Chairman, Pres & CEO

Executive Director
10,000 -11.7%
337.84
US$3,378,400 		10,000 -11.7% 337.84 US$3,378,400
2021-03-11 2021-03-10 S Sale
2.8
Nye C Howard

Chairman, Pres & CEO

Executive Director
6,948 -6.9%
337.79
US$2,346,965 		6,948 -6.9% 337.79 US$2,346,965
2021-03-11 2021-03-09 S Sale
2.8
Nye C Howard

Chairman, Pres & CEO

Executive Director
3,052 -2.9%
335.06
US$1,022,603 		3,052 -2.9% 335.06 US$1,022,603
2020-11-24 2020-11-24 S Sale
2.6
BAR ROSELYN R

EVP, General Counsel and Secy

Officer
10,004 -15.6%
274.64
US$2,747,456 		10,004 -15.6% 274.64 US$2,747,456
2020-09-10 2020-09-10 S Sale
2.0
COLE SUE W
Non-Executive Director
468 -2.1%
207.03
US$96,889 		468 -2.1% 207.03 US$96,889
2020-09-10 2020-09-08 S Sale
2.0
COLE SUE W
Non-Executive Director
750 -3.2%
209.18
US$156,885 		750 -3.2% 209.18 US$156,885
2020-07-10 2020-06-10 S Sale
2.8
ZELNAK STEPHEN P JR
Non-Executive Director
1,350 -21.4%
207.74
US$280,443 		1,350 -21.4% 207.74 US$280,443
2020-07-10 2020-06-05 S Sale
2.8
ZELNAK STEPHEN P JR
Non-Executive Director
13,385 -68.0%
225.23
US$3,014,609 		13,385 -68.0% 225.23 US$3,014,609
2020-07-10 2020-06-05 S Sale
2.8
ZELNAK STEPHEN P JR
Non-Executive Director
3,500 -15.1%
226.80
US$793,804 		3,500 -15.1% 226.80 US$793,804
2020-05-22 2020-05-21 S Sale
2.8
Nye C Howard

Chairman, Pres & CEO

Executive Director
6,645 -3.8%
177.62
US$1,180,272 		6,645 -3.8% 177.62 US$1,180,272
2020-05-15 2020-05-13 B Purchase
3.6
KORALESKI JOHN J
Non-Executive Director
1,000 +100.0%
164.08
US$164,080 		1,000 +100.0% 164.08 US$164,080
2020-05-06 2020-05-06 B Purchase
3.6
KORALESKI JOHN J
Non-Executive Director
1,000 +25.6%
183.54
US$183,540 		1,000 +25.6% 183.54 US$183,540
2020-07-10 2020-03-31 B Purchase
2.8
ZELNAK STEPHEN P JR
Non-Executive Director
8 +0.0%
177.24
US$1,458 		8 +0.0% 177.24 US$1,458
2020-07-10 2019-12-31 B Purchase
2.8
ZELNAK STEPHEN P JR
Non-Executive Director
5 +0.0%
277.43
US$1,455 		5 +0.0% 277.43 US$1,455
2020-07-02 2019-12-31 B Purchase
2.7
Grant Daniel L.

SVP - Strategy and Development

Officer
22 +0.1%
277.35
US$6,095 		22 +0.1% 277.35 US$6,095
2019-12-17 2019-12-13 S Sale Nye C Howard

Chairman, Pres & CEO

Executive Director
4,202 -2.9%
276.87
US$1,163,399 		4,202 -2.9% 276.87 US$1,163,399
2019-11-25 2019-11-25 B Purchase KORALESKI JOHN J Non-Executive Director
1,000 +inf%
260.23
US$260,227 		1,000 +inf% 260.23 US$260,227
2020-07-10 2019-09-30 B Purchase
2.8
ZELNAK STEPHEN P JR
Non-Executive Director
5 +0.0%
271.29
US$1,452 		5 +0.0% 271.29 US$1,452
2020-07-02 2019-09-30 B Purchase
2.7
Grant Daniel L.

SVP - Strategy and Development

Officer
14 +0.1%
271.35
US$3,741 		14 +0.1% 271.35 US$3,741
2019-08-30 2019-08-30 S Sale Nye C Howard

Chairman, Pres & CEO

Executive Director
7,440 -4.9%
253.52
US$1,886,166 		7,440 -4.9% 253.52 US$1,886,166
2019-08-02 2019-08-01 S Sale BAR ROSELYN R

EVP, General Counsel and Secy

Officer
2,821 -4.9%
246.93
US$696,577 		2,821 -4.9% 246.93 US$696,577
2019-08-02 2019-08-01 S Sale Nye C Howard

Chairman, Pres & CEO

Executive Director
11,224 -6.8%
243.66
US$2,734,890 		11,224 -6.8% 243.66 US$2,734,890
2020-07-10 2019-06-28 B Purchase
2.8
ZELNAK STEPHEN P JR
Non-Executive Director
6 +0.0%
226.65
US$1,265 		6 +0.0% 226.65 US$1,265
2020-07-02 2019-06-28 B Purchase
2.7
Grant Daniel L.

SVP - Strategy and Development

Officer
10 +0.1%
226.67
US$2,197 		10 +0.1% 226.67 US$2,197
2019-06-10 2019-06-10 S Sale
2.1
PEREZ LAREE E
824 -5.5%
231.80
US$191,005 		824 -5.5% 231.80 US$191,005
2019-05-07 2019-05-06 S Sale
1.7
McCunniff Donald A.

SVP - Human Resources

Officer
3,183 -19.9%
220.19
US$700,873 		3,183 -19.9% 220.19 US$700,873
2019-05-07 2019-05-06 S Sale
2.8
Nye C Howard

Chairman, Pres & CEO

Executive Director
14,668 -8.7%
220.48
US$3,234,034 		14,668 -8.7% 220.48 US$3,234,034
2020-07-10 2019-03-29 B Purchase
2.8
ZELNAK STEPHEN P JR
Non-Executive Director
6 +0.0%
200.34
US$1,262 		6 +0.0% 200.34 US$1,262
2020-07-02 2019-03-29 B Purchase
2.7
Grant Daniel L.

SVP - Strategy and Development

Officer
10 +0.1%
200.33
US$1,960 		10 +0.1% 200.33 US$1,960
2019-03-06 2019-03-05 S Sale
2.0
COLE SUE W
1,500 -6.7%
195.07
US$292,611 		1,500 -6.7% 195.07 US$292,611
2019-02-28 2019-02-28 S Sale
1.7
McCunniff Donald A.

SVP - Human Resources

Officer
1,563 -10.2%
189.31
US$295,892 		1,563 -10.2% 189.31 US$295,892
2019-02-28 2019-02-27 S Sale
1.7
McCunniff Donald A.

SVP - Human Resources

Officer
660 -4.1%
190.90
US$125,994 		660 -4.1% 190.90 US$125,994
2020-07-10 2018-12-31 B Purchase
2.8
ZELNAK STEPHEN P JR
Non-Executive Director
7 +0.0%
168.81
US$1,258 		7 +0.0% 168.81 US$1,258
2020-07-02 2018-12-31 B Purchase
2.7
Grant Daniel L.

SVP - Strategy and Development

Officer
12 +0.1%
168.90
US$1,954 		12 +0.1% 168.90 US$1,954
2018-12-18 2018-12-14 B Purchase KORALESKI JOHN J Non-Executive Director
1,000 +inf%
174.07
US$174,070 		1,000 +inf% 174.07 US$174,070
2018-11-13 2018-11-09 S Sale McCunniff Donald A.

SVP - Human Resources

Officer
1,476 -10.4%
185.50
US$273,798 		1,476 -10.4% 185.50 US$273,798
2020-02-12 2018-10-01 B Purchase
2.6
Mohr John P

SVP - CIO
1 +0.3%
185.60
US$232 		1 +0.3% 185.60 US$232
2020-07-10 2018-09-28 B Purchase
2.8
ZELNAK STEPHEN P JR
Non-Executive Director
7 +0.0%
185.91
US$1,255 		7 +0.0% 185.91 US$1,255
2020-07-02 2018-09-28 B Purchase
2.7
Grant Daniel L.

SVP - Strategy and Development

Officer
10 +0.1%
185.79
US$1,949 		10 +0.1% 185.79 US$1,949
2018-08-24 2018-08-22 S Sale McCunniff Donald A.

SVP - Human Resources

Officer
2,250 -15.1%
204.33
US$459,731 		2,250 -15.1% 204.33 US$459,731
2018-08-01 2018-07-30 B Purchase ZELNAK STEPHEN P JR Non-Executive Director
3,500 +19.0%
202.87
US$710,045 		3,500 +19.0% 202.87 US$710,045
2018-07-30 2018-07-27 B Purchase KORALESKI JOHN J Non-Executive Director
2,400 +102.1%
208.06
US$499,332 		2,400 +102.1% 208.06 US$499,332
2020-02-12 2018-07-02 B Purchase
2.6
Mohr John P

SVP - CIO
1 +0.2%
221.16
US$212 		1 +0.2% 221.16 US$212
2020-07-10 2018-06-29 B Purchase
2.8
ZELNAK STEPHEN P JR
Non-Executive Director
5 +0.0%
222.48
US$1,148 		5 +0.0% 222.48 US$1,148
2020-07-02 2018-06-29 B Purchase
2.7
Grant Daniel L.

SVP - Strategy and Development

Officer
5 +0.0%
222.50
US$1,017 		5 +0.0% 222.50 US$1,017
2018-06-13 2018-06-13 S Sale McCunniff Donald A.

SVP - Human Resources

Officer
4,226 -22.1%
230.72
US$975,031 		4,226 -22.1% 230.72 US$975,031
2018-05-14 2018-05-11 S Sale BAR ROSELYN R

EVP, General Counsel and Secy

Officer
727 -1.4%
215.98
US$157,014 		727 -1.4% 215.98 US$157,014
2018-05-14 2018-05-11 S Sale BAR ROSELYN R

EVP, General Counsel and Secy

Officer
5,271 -9.4%
213.36
US$1,124,605 		5,271 -9.4% 213.36 US$1,124,605
2018-05-11 2018-05-09 S Sale Nye C Howard

Chairman, Pres & CEO

Executive Director
8,409 -5.8%
212.66
US$1,788,216 		8,409 -5.8% 212.66 US$1,788,216
2018-05-11 2018-05-09 S Sale Quillen Michael J Non-Executive Director
3,000 -14.8%
212.50
US$637,499 		3,000 -14.8% 212.50 US$637,499
2020-02-12 2018-04-02 B Purchase
2.6
Mohr John P

SVP - CIO
1 +0.2%
203.29
US$147 		1 +0.2% 203.29 US$147
2020-07-10 2018-03-29 B Purchase
2.8
ZELNAK STEPHEN P JR
Non-Executive Director
6 +0.0%
202.93
US$1,146 		6 +0.0% 202.93 US$1,146
2020-07-02 2018-03-29 B Purchase
2.7
Grant Daniel L.

SVP - Strategy and Development

Officer
5 +0.0%
203.17
US$1,015 		5 +0.0% 203.17 US$1,015
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