Introduction

This page provides a comprehensive analysis of the known insider trading history of David A Thomas. 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 David A Thomas has reported holdings or trades in the following companies:

Security Title Latest Reported Holdings
US:DTE / DTE Energy Company Director 2,068
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by David A Thomas. 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 David A Thomas 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
2025-05-06 2025-05-05 4 DTE DTE ENERGY CO
Common Stock
D - Sale to Issuer -1,679 2,068 -44.81 136.69 -229,541 282,675
2025-05-06 2025-05-05 4 DTE DTE ENERGY CO
Common Stock
M - Exercise 1,679 3,747 81.20
2024-01-08 2024-01-04 4 DTE DTE ENERGY CO
Common Stock
D - Sale to Issuer -1,573 2,068 -43.20 110.53 -173,818 228,576
2024-01-08 2024-01-04 4 DTE DTE ENERGY CO
Common Stock
M - Exercise 1,573 3,641 76.04
2023-01-04 2022-01-02 4/A DTE DTE ENERGY CO
Common Stock
D - Sale to Issuer -1,560 2,068 -43.00 119.54 -186,482 247,209
2023-01-04 2022-01-02 4/A DTE DTE ENERGY CO
Common Stock
M - Exercise 1,560 3,628 75.44
2023-01-04 2023-01-02 4 DTE DTE ENERGY CO
Common Stock
D - Sale to Issuer -1,457 2,068 -41.33 117.53 -171,217 243,052
2023-01-04 2023-01-02 4 DTE DTE ENERGY CO
Common Stock
M - Exercise 1,457 3,525 70.44
2022-05-09 2022-05-05 4 DTE DTE ENERGY CO
Phantom Stock
A - Award 1,515 4,420 52.15 128.83 195,177 569,435
2022-01-03 2022-01-02 4 DTE DTE ENERGY CO
Phantom Stock
M - Exercise -1,560 2,886 -35.08
2022-01-03 2022-01-02 4 DTE DTE ENERGY CO
Common Stock
D - Sale to Issuer -1,560 1,000 -60.94 119.54 -186,482 119,540
2022-01-03 2022-01-02 4 DTE DTE ENERGY CO
Common Stock
M - Exercise 1,560 2,560 156.00
2021-02-26 2021-02-24 4 DTE DTE ENERGY CO
Common Stock
P - Purchase 395 2,068 23.61 126.56 49,991 261,726
2021-01-06 2021-01-04 4 DTE DTE ENERGY CO
Phantom Stock
A - Award 1,215 3,647 49.96 119.39 145,059 435,426
2021-01-05 2021-01-02 4 DTE DTE ENERGY CO
Phantom Stock
M - Exercise -1,325 2,432 -35.27
2021-01-05 2021-01-02 4 DTE DTE ENERGY CO
Common Stock
D - Sale to Issuer -1,325 1,673 -44.20 121.41 -160,890 203,119
2021-01-05 2021-01-02 4 DTE DTE ENERGY CO
Common Stock
M - Exercise 1,325 2,998 79.21
2020-01-07 2020-01-03 4 DTE DTE ENERGY CO
Phantom Stock
M - Exercise -1,457 3,625 -28.66
2020-01-07 2020-01-03 4 DTE DTE ENERGY CO
Common Stock
D - Sale to Issuer -1,457 1,673 -46.54 129.01 -187,908 215,834
2020-01-07 2020-01-03 4 DTE DTE ENERGY CO
Common Stock
M - Exercise 1,457 3,130 87.06
2020-01-06 2020-01-02 4 DTE DTE ENERGY CO
Phantom Stock
A - Award 1,125 5,070 28.51 128.70 144,788 652,554
2019-01-07 2019-01-04 4 DTE DTE ENERGY CO
Phantom Stock
M - Exercise -1,697 3,837 -30.66
2019-01-07 2019-01-04 4 DTE DTE ENERGY CO
Common Stock
D - Sale to Issuer -1,697 1,000 -62.92 109.99 -186,640 109,990
2019-01-07 2019-01-04 4 DTE DTE ENERGY CO
Common Stock
M - Exercise 1,697 2,697 169.69
2019-01-04 2019-01-02 4 DTE DTE ENERGY CO
Phantom Stock
A - Award 1,205 5,519 27.93 107.89 130,007 595,462
2018-01-04 2018-01-02 4 DTE DTE ENERGY CO
Phantom Stock
A - Award 1,200 4,183 40.22 108.45 130,140 453,699
2018-01-04 2018-01-02 4 DTE DTE ENERGY CO
Phantom Stock
M - Exercise -1,523 2,983 -33.79
2018-01-04 2018-01-02 4 DTE DTE ENERGY CO
Common Stock
D - Sale to Issuer -1,523 1,000 -60.36 108.45 -165,142 108,450
2018-01-04 2018-01-02 4 DTE DTE ENERGY CO
Common Stock
M - Exercise 1,523 2,523 152.28
2017-02-14 2017-02-13 4 DTE DTE ENERGY CO
Common Stock
P - Purchase 673 1,673 67.30 98.02 65,967 163,987
2017-01-04 2017-01-03 4 DTE DTE ENERGY CO
Phantom Stock
A - Award 1,325 4,366 43.57 98.21 130,128 428,792
2017-01-04 2017-01-03 4 DTE DTE ENERGY CO
Phantom Stock
M - Exercise -1,781 3,041 -36.93
2017-01-04 2017-01-03 4 DTE DTE ENERGY CO
Common Stock
D - Sale to Issuer -1,781 1,000 -64.04 98.51 -175,439 98,510
2017-01-04 2017-01-03 4 DTE DTE ENERGY CO
Common Stock
M - Exercise 1,781 2,781 178.09
2016-01-05 2016-01-04 4 DTE DTE ENERGY CO
Phantom Stock
A - Award 1,540 4,665 49.27 79.14 121,876 369,213
2015-01-06 2015-01-02 4 DTE DTE ENERGY CO
Phantom Stock
A - Award 1,380 3,032 83.52 87.01 120,074 263,833
2014-01-06 2014-01-02 4 DTE DTE ENERGY CO
Phantom Stock
A - Award 1,610 1,610
2013-06-24 2013-06-21 4 DTE DTE ENERGY CO
Common Stock
A - Award 1,000 1,000
2013-06-21 3 DTE DTE ENERGY CO
Common Stock
0
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)