Introduction

This page provides a comprehensive analysis of the known insider trading history of Laree E Perez. Insiders are officers, directors, or significant investors in a company. It is illegal for insiders to make trades in their companies based on specific, non-public information. This does not mean it is illegal for them to make any trades in their own companies. However, they must report all trades to the SEC via a Form 4. Despite these restrictions, academic research suggests that insiders - in general - tend to outperform the market in their own companies.

Average Trade Profitability

The average trade profitability is the average return of all the open market purchases made by the insider in the last three years. To calculate this, we examine every open-market, unplanned purchase made by the insider, excluding all trades that were marked as part of a 10b5-1 trading plan. We then calculate the average performance of those trades over 3, 6, and 12 months, averaging each of those durations to generate a final performance metric for each trade. Finally, we average all of the performance metrics to calculate a performance metric for the insider. This list only includes insiders that have made at least three trades in the last two years.

If this insiders trade profitability is "N/A", then the insider either has not made any open-market purchases in the last three years, or the trades they’ve made are too recent to calculate a reliable performance metric.

Update Frequency: Daily

See the list of most profitable insider traders.

Companies with Reported Insider Positions

The SEC filings indicate Laree E Perez has reported holdings or trades in the following companies:

Security Title Latest Reported Holdings
US:MLM / Martin Marietta Materials, Inc. Director 15,417
US:US3724ESC940 / GenOn Energy Inc - Escrow Director 0
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by Laree E Perez. Non-planned trade are trades that were not made as part of a 10b5-1 trading plan. The stock performance is charted as cumulative percent change in share price. For example, if an insider trade was made on January 1, 2019, the chart will show the daily percent change of the security to the present day. If the share price were to go from $10 to $15 during this time, the cumulative percent change in share price would be 50%. A change in price from $10 to $20 would be 100%, and a change in price of $10 to $5 would be -50%.

Ultimately, we are trying to determine how closely the insider’s trades correlate to excess returns (positive or negative) in the share price in order to see if the insider is timing their trades to profit from insider information. Consider the situation where an insider was doing this. In this situation, we would expect either (a) positive returns after purchases, or (b) negative returns after sales. In the case of (a), the PURCHASE chart would show a series of upwardly sloping curves, indicating positive returns after each purchase transaction. In the case of (b), the SALE chart would show a series of downward sloping curves, indicating negative returns after each sale transaction.

However, this alone is not enough to draw conclusions. If, for example, the share price of the company was in a non-cyclical climb over many years, then we would expect all the post-purchase plots to be upwardly sloping. Likewise, non-cyclical declines over many years would result in downward sloping post-trade plots. Neither of these charts would suggest insider trading activity.

The strongest indicator would be a situation where the share price was extremely cyclical, and there were both positive signals in the PURCHASE chart and negative plots on the SALE chart. This situation would be highly suggestive of an insider that was timing trades to their financial advantage.

Insider Trading History

This table shows the complete list of insider trades made by Laree E Perez as disclosed to the Securities Exchange Commission (SEC).

File Date Tran Date Form Ticker Security Code 10b5-1 Shares Remaining Shares Percent
Change
Share
Price
Tran
Value
Remaining
Value
2025-08-11 2025-08-08 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
S - Sale -1,038 15,417 -6.31 613.32 -636,626 9,455,554
2025-05-16 2025-05-15 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 308 16,455 1.91 552.86 170,281 9,097,311
2024-05-17 2024-05-16 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 293 16,147 1.85 581.69 170,435 9,392,548
2023-05-12 2023-05-11 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 362 15,854 2.34 400.57 145,006 6,350,637
2022-05-16 2022-05-12 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 443 15,492 2.94
2021-12-02 2021-11-30 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
G - Gift -245 15,049 -1.60
2021-05-17 2021-05-13 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 388 15,294 2.60
2020-05-15 2020-05-14 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 770 14,906 5.45
2019-06-10 2019-06-10 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
S - Sale -824 14,136 -5.51 231.80 -191,005 3,276,760
2019-05-13 2019-05-09 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 600 14,960 4.18
2018-05-18 2018-05-17 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 609 14,360 4.43
2018-02-15 2018-02-14 4 MLM MARTIN MARIETTA MATERIALS INC
Stock Options (Right to Buy)
M - Exercise -3,000 0 -100.00
2018-02-15 2018-02-14 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
S - Sale -3,000 13,751 -17.91 214.00 -642,000 2,942,714
2018-02-15 2018-02-14 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
M - Exercise 3,000 16,751 21.82
2017-05-19 2017-05-18 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 437 13,751 3.28
2017-02-21 2017-02-17 4 MLM MARTIN MARIETTA MATERIALS INC
Stock Options (Right to Buy)
M - Exercise -3,000 0 -100.00
2017-02-21 2017-02-17 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
S - Sale -3,000 13,314 -18.39 218.98 -656,952 2,915,553
2017-02-21 2017-02-17 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
M - Exercise 3,000 16,314 22.53
2016-12-02 2016-11-30 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 33 13,314 0.25 175.56 5,793 2,337,406
2016-09-01 2016-08-31 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 39 13,281 0.29 146.42 5,710 1,944,604
2016-06-01 2016-05-31 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 38 13,242 0.29 151.23 5,747 2,002,588
2016-05-23 2016-05-19 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 541 13,204 4.27
2016-03-02 2016-02-29 4 MLM MARTIN MARIETTA MATERIALS INC
Stock Options (Right to Buy)
M - Exercise -3,000 0 -100.00
2016-03-02 2016-02-29 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 50 12,663 0.40 114.10 5,705 1,444,848
2016-03-02 2016-02-29 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
S - Sale -3,000 12,613 -19.21 143.35 -430,060 1,808,116
2016-03-02 2016-02-29 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
M - Exercise 3,000 15,613 23.78
2015-12-01 2015-11-30 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 45 12,613 0.36 125.92 5,666 1,588,229
2015-09-02 2015-08-31 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 43 12,568 0.34 134.24 5,772 1,687,128
2015-06-02 2015-05-29 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 50 12,525 0.40 119.21 5,960 1,493,105
2015-05-22 2015-05-21 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 647 12,475 5.47
2015-04-01 2015-03-31 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 12 11,828 0.10 111.84 1,342 1,322,844
2015-01-05 2014-12-31 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 15 11,816 0.13 110.35 1,655 1,303,896
2014-10-02 2014-09-30 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 10 11,801 0.08 103.15 1,032 1,217,273
2014-07-01 2014-06-30 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 15 11,791 0.13 105.64 1,585 1,245,601
2014-05-27 2014-05-22 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 910 11,776 8.37
2014-05-27 2014-05-22 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 95 10,866 0.88 96.80 9,196 1,051,829
2014-05-01 2014-04-30 4 MLM MARTIN MARIETTA MATERIALS INC
Stock Options (Right to Buy)
M - Exercise -3,000 0 -100.00
2014-05-01 2014-04-30 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
S - Sale -500 10,771 -4.44 122.68 -61,338 1,321,332
2014-05-01 2014-04-30 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
S - Sale -400 11,271 -3.43 122.67 -49,068 1,382,614
2014-05-01 2014-04-30 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
S - Sale -2,100 11,671 -15.25 122.67 -257,607 1,431,683
2014-05-01 2014-04-30 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
M - Exercise 3,000 13,771 27.85
2014-04-02 2014-03-31 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 20 10,771 0.19 102.68 2,054 1,105,966
2014-01-02 2013-12-31 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 94 10,751 0.88 79.95 7,515 859,542
2013-10-02 2013-09-30 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 24 10,657 0.23 78.54 1,885 837,001
2013-07-01 2013-06-28 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 40 10,633 0.38 78.74 3,150 837,242
2013-05-24 2013-05-23 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 1,017 10,593 10.62
2013-05-24 2013-05-23 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 263 9,576 2.82 86.59 22,773 829,186
2013-04-01 2013-03-28 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 54 9,313 0.58 81.62 4,407 760,127
2013-01-02 2012-12-31 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 50 9,259 0.54 75.42 3,771 698,314
2012-12-18 2012-12-14 4 GEN GenOn Energy, Inc.
Stock Options
D - Sale to Issuer -5,000 0 -100.00
2012-12-18 2012-12-14 4 GEN GenOn Energy, Inc.
Stock Options
D - Sale to Issuer -5,000 0 -100.00
2012-12-18 2012-12-14 4 GEN GenOn Energy, Inc.
Stock Options
D - Sale to Issuer -5,000 0 -100.00
2012-12-18 2012-12-14 4 GEN GenOn Energy, Inc.
Common Stock
D - Sale to Issuer -98,986 0 -100.00
2012-10-02 2012-09-28 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 38 9,209 0.41 66.30 2,519 610,557
2012-07-02 2012-06-29 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 60 9,171 0.66 63.06 3,784 578,323
2012-05-25 2012-05-24 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 1,592 9,111 21.17
2012-05-25 2012-05-24 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 412 7,519 5.80 55.30 22,784 415,801
2012-05-14 2012-05-10 4 GEN GenOn Energy, Inc.
Common Stock
A - Award 43,379 98,986 78.01
2012-04-02 2012-03-30 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 55 7,107 0.78 68.50 3,768 486,830
2012-01-03 2011-12-30 4 MLM MARTIN MARIETTA MATERIALS INC
Common Stock
A - Award 73 7,052 1.05 60.33 4,404 425,447
2005-01-04 2004-12-31 4 MLM MARTIN MARIETTA MATERIALS INC
Stock Units
A - Award 44 395 12.54 42.93 1,889 16,957
P
Open market or private purchase of non-derivative or derivative security
S
Open market or private sale of non-derivative or derivative security
A
Grant, award, or other acquisition of securities from the company (such as an option)
C
Conversion of derivative
D
Sale or transfer of securities back to the company
F
Payment of exercise price or tax liability using portion of securities received from the company
G
Gift of securities by or to the insider
K
Equity swaps and similar hedging transactions
M
Exercise or conversion of derivative security received from the company (such as an option)
V
A transaction voluntarily reported on Form 4
J
Other (accompanied by a footnote describing the transaction)