Michael J. Petro

CIK: 0001878191

Transaction Breakdown

Open Market Buys (P)1 (6.7%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)7 (46.7%)

Compensation grants

Other (G, F, J, C, D, …)7 (46.7%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

MLM

MARTIN MARIETTA MATERIALS INC

Officer

Discretionary Trading P&L

Holdings

Transaction History (15 total)

MLM
MARTIN MARIETTA MATERIALS INC
Sep 1, 2026
Award(A)
Direct
9.3K shares-
MLM
MARTIN MARIETTA MATERIALS INC
Aug 3, 2026
Tax Payment(F)
Direct
368 shares at avg. $542.27$200K
MLM
MARTIN MARIETTA MATERIALS INC
Mar 1, 2026
Award(A)
Direct
3K shares-
MLM
MARTIN MARIETTA MATERIALS INC
Feb 24, 2026
Tax Payment(F)
Direct
94 shares at avg. $696.85$66K
MLM
MARTIN MARIETTA MATERIALS INC
Feb 23, 2026
Tax Payment(F)
Direct
211 shares at avg. $683.60$144K
MLM
MARTIN MARIETTA MATERIALS INC
Feb 20, 2026
Award(A)
Direct
931 shares-
MLM
MARTIN MARIETTA MATERIALS INC
Feb 17, 2026
Tax Payment(F)
Direct
758 shares at avg. $666.53$505K
MLM
MARTIN MARIETTA MATERIALS INC
Feb 17, 2026
Award(A)
Direct
1.7K shares-
MLM
MARTIN MARIETTA MATERIALS INC
Jul 8, 2025
Award(A)
Direct
1.8K shares-
MLM
MARTIN MARIETTA MATERIALS INC
Mar 4, 2025
Purchase(P)
Direct
550 shares at avg. $454.37$250K
MLM
MARTIN MARIETTA MATERIALS INC
Feb 24, 2025
Tax Payment(F)
Direct
200 shares at avg. $490.64$98K
MLM
MARTIN MARIETTA MATERIALS INC
Feb 21, 2025
Award(A)
Direct
733 shares-
MLM
MARTIN MARIETTA MATERIALS INC
Feb 18, 2025
Award(A)
Direct
2.5K shares-
MLM
MARTIN MARIETTA MATERIALS INC
Feb 18, 2025
Tax Payment(F)
Direct
1.2K shares at avg. $533.99$647K
MLM
MARTIN MARIETTA MATERIALS INC
Dec 2, 2024
Tax Payment(F)
Direct
93 shares at avg. $593.22$55K

		Type	Shares	Price		Ownership
Sep 1, 2026	MLM MARTIN MARIETTA MATERIALS INC	Award(A)	9,331	-	$0	Direct
Aug 3, 2026	MLM MARTIN MARIETTA MATERIALS INC	Tax Payment(F)	368	$542.27	$199,555	Direct
Mar 1, 2026	MLM MARTIN MARIETTA MATERIALS INC	Award(A)	2,960	-	$0	Direct
Feb 24, 2026	MLM MARTIN MARIETTA MATERIALS INC	Tax Payment(F)	94	$696.85	$65,504	Direct
Feb 23, 2026	MLM MARTIN MARIETTA MATERIALS INC	Tax Payment(F)	211	$683.60	$144,240	Direct
Feb 20, 2026	MLM MARTIN MARIETTA MATERIALS INC	Award(A)	931	-	$0	Direct
Feb 17, 2026	MLM MARTIN MARIETTA MATERIALS INC	Tax Payment(F)	758	$666.53	$505,230	Direct
Feb 17, 2026	MLM MARTIN MARIETTA MATERIALS INC	Award(A)	1,724	-	$0	Direct
Jul 8, 2025	MLM MARTIN MARIETTA MATERIALS INC	Award(A)	1,822	-	-	Direct
Mar 4, 2025	MLM MARTIN MARIETTA MATERIALS INC	Purchase(P)	550	$454.37	$249,904	Direct
Feb 24, 2025	MLM MARTIN MARIETTA MATERIALS INC	Tax Payment(F)	200	$490.64	$98,128	Direct
Feb 21, 2025	MLM MARTIN MARIETTA MATERIALS INC	Award(A)	733	-	-	Direct
Feb 18, 2025	MLM MARTIN MARIETTA MATERIALS INC	Award(A)	2,454	-	-	Direct
Feb 18, 2025	MLM MARTIN MARIETTA MATERIALS INC	Tax Payment(F)	1,211	$533.99	$646,662	Direct
Dec 2, 2024	MLM MARTIN MARIETTA MATERIALS INC	Tax Payment(F)	93	$593.22	$55,169	Direct

1-15 of 15 transactions

About Petro Michael J

Petro Michael J (SEC CIK 0001878191) files insider reports with the SEC as SVP and CFO of MARTIN MARIETTA MATERIALS INC (MLM).

Signal8 holds 11 ownership filings by Petro Michael J, all Form 4s, filed between Dec 3, 2024 and Sep 2, 2026. Those filings report 15 transactions, from Dec 2, 2024 to Sep 1, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Petro Michael J's filings is in RALEIGH, NC.

Recent filings by Petro Michael J

Sep 1, 2026: Grant or award of MLM shares (Form 4, code A).
Aug 3, 2026: Tax withholding of MLM shares (Form 4, code F).
Mar 1, 2026: Grant or award of MLM shares (Form 4, code A).
Feb 24, 2026: Tax withholding of MLM shares (Form 4, code F).
Feb 23, 2026: Tax withholding of MLM shares (Form 4, code F).

Other insiders filing for MARTIN MARIETTA MATERIALS INC (MLM)

WAJSGRAS DAVID C, Director
Pike Thomas, Director
LYONS MARTIN J, Director
Niemann Philipp, Director
LNA Holding SRL, 10% Owner
SLAGER DONALD W, Director

How to read Form 4 transaction codes