Michael J Petro

MLM

Michael J Petro serves as SVP and CFO at Martin Marietta Materials, Inc. (MLM). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

1 trades

$249.9K

Total Sells

3 trades

$1.25M

Net Position

Net Seller

$1.00M

Companies Traded

MLM

Active Period

Feb 2025 – Feb 2026

4 total trades

Most Recent

Sell MLM

Feb 19, 2026 · $505.2K

Michael J Petro's Insider Trading at Martin Marietta Materials, Inc. (MLM)

Buys

1 · $249.9K

Sells

3 · $1.25M

Total Shares Bought

550

Total Shares Sold

2,169

MLM Price Chart

Loading chart...

Date	Type	Shares	Avg Price	Value
Feb 19, 2026	Sell	758	$666.53	$505.2K
Mar 5, 2025	Buy	550	$454.37	$249.9K
Feb 25, 2025	Sell	200	$490.64	$98.1K
Feb 20, 2025	Sell	1,211	$533.99	$646.7K

Related Insiders

C Howard Nye

Chairman, Pres & CEO

MLMSell · Feb 19, 2026

Robert J Cardin

SVP, Controller & CAO

MLMSell · Feb 17, 2026

Jason Paul Flynn

SVP and CIO

MLMSell · Feb 17, 2026

BAR ROSELYN R

Executive Vice President

MLMSell · Dec 17, 2025

Donald A. McCunniff

EVP and CHRO

MLMSell · Dec 17, 2025

PEREZ LAREE E

Director

MLMSell · Aug 11, 2025

Explore More Insider Trading Data

MLM Insider Trading Activity

View all insider trades at Martin Marietta Materials, Inc.

Basic Materials Sector Insider Trades

See insider activity across basic materials stocks

Latest Insider Buys

Most recent insider purchases across all stocks

CEO Stock Purchases

Track CEO buying activity