MarketPeel
Insider Trading Intelligence
Pricing
…
EVP, COO
Christopher William Samborski
Fri, May 1, 2026
May 1
bought
$0.00
of
MLM
8,101
shares @ $0.00
Increased holdings by
+59.30%
Largest trade (out of 1)
Cluster Buy
Trade made by an officer
Part of a cluster of 2 transactions by 2 insiders
Unscheduled trade
MLM
MARTIN MARIETTA MATERIALS INC
Materials
Metals & Mining
1D
0.00%
1W
+0.66%
1M
-2.57%
3M
-5.63%
6M
—
1Y
—
Recent insider activity at MLM
Aug 8
Laree E. Perez
Sold
$636.63k
Mar 5
Donald A. Mccunniff
Sold
$632.70k
Mar 4
Michael J. Petro
Bought
$249.90k
Mar 14
Roselyn R. Bar
Sold
$6.03m
Mar 5
C. Howard Nye
Sold
$9.06m
Mar 5
C. Howard Nye
Sold
$3.02m
Feb 16
Sue W. Cole
Sold
$480.71k
Feb 16
Sue W. Cole
Sold
$456.25k
Full MLM profile →
Christopher William Samborski’s trading history →
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