Introduction

This page provides a comprehensive analysis of the known insider trading history of Mark H Hildebrandt. 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.

See Highest Ranking Insiders
Companies with Reported Insider Positions

The SEC filings indicate Mark H Hildebrandt has reported holdings or trades in the following companies:

Security Title Latest Reported Holdings
BR:H1EI34 / HEICO Corporation - Depositary Receipt (Common Stock) Director 5,470
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by Mark H Hildebrandt. 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 Mark H Hildebrandt 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
2024-10-21 2024-10-18 4 HEI, HEI.A HEICO CORP
Common Stock 		P - Purchase 726 5,470 15.30 262.94 190,894 1,438,277
2023-06-08 2023-06-07 4 HEI, HEI.A HEICO CORP
Class A Common Stock 		P - Purchase 781 781 127.98 99,954 99,954
2023-06-06 2023-06-02 4 HEI, HEI.A HEICO CORP
Common Stock 		P - Purchase 120 4,744 2.60 158.20 18,984 750,516
2023-01-11 2023-01-10 4 HEI, HEI.A HEICO CORP
Common Stock 		P - Purchase 1,385 4,624 42.76 157.07 217,535 726,269
2021-09-10 2021-09-08 4 HEI, HEI.A HEICO CORP
Class A Common Stock 		P - Purchase 926 48,747 1.94 112.13 103,829 5,465,816
2020-10-14 2020-10-12 4 HEI, HEI.A HEICO CORP
Common Stock 		P - Purchase 978 3,239 43.26 111.44 108,991 360,962
2019-10-30 2019-10-29 4 HEI, HEI.A HEICO CORP
Common Stock 		P - Purchase 949 2,261 72.33 120.70 114,546 272,906
2019-06-17 2019-06-14 4 HEI, HEI.A HEICO CORP
Class A Common Stock 		P - Purchase 987 1,974 100.00 100.69 99,383 198,765
2019-06-17 2019-06-14 4 HEI, HEI.A HEICO CORP
Class A Common Stock 		P - Purchase 987 987 100.71 99,401 99,401
2019-06-11 2019-06-10 4 HEI, HEI.A HEICO CORP
Class A Common Stock 		P - Purchase 963 3,019 46.84 103.34 99,516 311,983
2018-10-10 2018-10-09 4 HEI, HEI.A HEICO CORP
Common Stock 		P - Purchase 1,312 1,312 88.21 115,732 115,732
2017-10-06 2017-10-05 4 HEI, HEI.A HEICO CORP
Class A Common Stock 		P - Purchase 1,316 1,316 76.13 100,186 100,186
2017-10-03 2017-09-29 4 HEI, HEI.A HEICO CORP
Class A Common Stock 		P - Purchase 1,504 30,606 5.17 76.08 114,428 2,328,581
2016-09-09 2016-09-07 4 HEI, HEI.A HEICO CORP
Class A Common Stock 		P - Purchase 2,044 23,282 9.62 57.11 116,724 1,329,537
2015-09-23 2015-09-21 4 HEI, HEI.A HEICO CORP
Class A Common Stock 		P - Purchase 1,550 21,238 7.87 45.03 69,790 956,262
2014-12-19 2014-12-18 4 HEI, HEI.A HEICO CORP
Class A Common Stock 		P - Purchase 2,542 19,688 14.83 46.99 119,443 925,096
2013-10-31 2013-10-29 4 HEI, HEI.A HEICO CORP
Class A Common Stock 		P - Purchase 1,786 17,146 11.63 39.23 70,063 672,620
2012-12-21 2012-12-20 4 HEI, HEI.A HEICO CORP
Class A Common Stock 		P - Purchase 833 12,288 7.27 31.11 25,915 382,291
2012-10-29 2012-10-26 4 HEI, HEI.A HEICO CORP
Class A Common Stock 		P - Purchase 2,500 11,455 27.92 30.12 75,295 345,002
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)