Introduction

This page provides a comprehensive analysis of the known insider trading history of Michael D Keller. 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 Michael D Keller has reported holdings or trades in the following companies:

Security Title Latest Reported Holdings
US:NUE / Nucor Corporation Vice Pres. and Corp. Contro 22,464
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by Michael D Keller. 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 Michael D Keller 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
2025-08-26 2025-08-22 4 NUE NUCOR CORP
Common Stock
S - Sale -88 22,464 -0.39 148.43 -13,062 3,334,244
2025-08-26 2025-08-22 4 NUE NUCOR CORP
Common Stock
S - Sale -6,000 22,552 -21.01 148.41 -890,460 3,346,899
2025-06-03 2025-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -269 28,552 -0.93 109.36 -29,418 3,122,415
2025-06-03 2025-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -342 28,821 -1.17 109.36 -37,401 3,151,833
2025-06-03 2025-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -348 29,163 -1.18 109.36 -38,057 3,189,234
2025-06-03 2025-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 1,701 29,511 6.12
2025-02-19 2025-02-17 4 NUE NUCOR CORP
Common Stock
A - Award 2,014 27,810 7.81
2024-06-04 2024-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 1,845 25,796 7.70
2024-06-04 2024-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -343 23,951 -1.41 168.85 -57,916 4,044,077
2024-06-04 2024-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -350 24,294 -1.42 168.85 -59,098 4,101,993
2024-06-04 2024-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -229 24,644 -0.92 168.85 -38,667 4,161,090
2024-03-25 2024-03-21 4 NUE NUCOR CORP
Common Stock
S - Sale -200 24,873 -0.80 193.81 -38,762 4,820,580
2024-03-25 2024-03-21 4 NUE NUCOR CORP
Common Stock
S - Sale -2,945 25,073 -10.51 193.66 -570,329 4,855,584
2024-02-21 2024-02-19 4 NUE NUCOR CORP
Common Stock
A - Award 3,615 28,018 14.81
2023-12-21 2023-12-19 4 NUE NUCOR CORP
Common Stock
S - Sale -6,771 24,403 -21.72 177.46 -1,201,548 4,330,385
2023-06-05 2023-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 2,342 31,174 8.12 133.03 311,556 4,147,039
2023-06-05 2023-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -351 28,832 -1.20 132.06 -46,353 3,807,516
2023-06-05 2023-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -230 29,183 -0.78 132.06 -30,374 3,853,869
2023-06-05 2023-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -762 29,413 -2.53 132.06 -100,630 3,884,242
2023-02-22 2023-02-20 4 NUE NUCOR CORP
Common Stock
A - Award 3,617 30,175 13.62
2022-06-03 2022-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 2,384 26,558 9.86
2022-06-03 2022-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -231 24,174 -0.95 132.46 -30,598 3,202,050
2022-06-03 2022-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -766 24,405 -3.04 132.46 -101,464 3,232,648
2022-06-03 2022-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -963 25,171 -3.68 132.46 -127,559 3,334,112
2022-03-28 2022-03-25 4 NUE NUCOR CORP
Common Stock
S - Sale -1,003 26,134 -3.70 154.67 -155,134 4,042,101
2022-03-28 2022-03-25 4 NUE NUCOR CORP
Common Stock
S - Sale -2,597 27,137 -8.73 154.54 -401,340 4,193,707
2022-02-23 2022-02-21 4 NUE NUCOR CORP
Common Stock
A - Award 3,815 29,734 14.72
2021-08-16 2021-08-13 4 NUE NUCOR CORP
Common Stock
S - Sale -3,431 25,919 -11.69 127.40 -437,109 3,302,044
2021-06-03 2021-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 1,559 29,347 5.61
2021-06-03 2021-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -739 27,788 -2.59 102.54 -75,777 2,849,352
2021-06-03 2021-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -643 28,527 -2.20 102.54 -65,933 2,925,129
2021-06-03 2021-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -393 29,170 -1.33 102.54 -40,298 2,991,062
2021-03-19 2021-03-18 4 NUE NUCOR CORP
Common Stock
S - Sale -14,412 29,558 -32.78 71.50 -1,030,458 2,113,376
2021-02-24 2021-02-22 4 NUE NUCOR CORP
Common Stock
A - Award 2,002 43,970 4.77
2020-06-03 2020-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 5,167 41,943 14.05
2020-06-03 2020-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -1,141 36,776 -3.01 42.26 -48,219 1,554,142
2020-02-19 2020-02-17 4 NUE NUCOR CORP
Common Stock
A - Award 2,077 37,907 5.80
2019-06-04 2019-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -939 35,806 -2.56 48.00 -45,072 1,718,674
2019-06-04 2019-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 6,493 36,745 21.46
2019-02-20 2019-02-18 4 NUE NUCOR CORP
Common Stock
A - Award 3,507 30,245 13.12
2018-06-25 2018-06-22 4 NUE NUCOR CORP
Common Stock
S - Sale -300 26,720 -1.11 65.68 -19,704 1,754,951
2018-06-25 2018-06-22 4 NUE NUCOR CORP
Common Stock
S - Sale -803 27,020 -2.89 65.67 -52,733 1,774,384
2018-06-25 2018-06-22 4 NUE NUCOR CORP
Common Stock
S - Sale -300 27,823 -1.07 65.66 -19,698 1,826,839
2018-06-25 2018-06-22 4 NUE NUCOR CORP
Common Stock
S - Sale -300 28,123 -1.06 65.65 -19,695 1,846,256
2018-06-25 2018-06-22 4 NUE NUCOR CORP
Common Stock
S - Sale -100 28,423 -0.35 65.64 -6,564 1,865,667
2018-06-25 2018-06-22 4 NUE NUCOR CORP
Common Stock
S - Sale -200 28,523 -0.70 65.63 -13,126 1,871,945
2018-06-25 2018-06-22 4 NUE NUCOR CORP
Common Stock
S - Sale -500 28,723 -1.71 65.62 -32,810 1,884,784
2018-06-25 2018-06-22 4 NUE NUCOR CORP
Common Stock
S - Sale -879 29,223 -2.92 65.61 -57,671 1,917,302
2018-06-25 2018-06-22 4 NUE NUCOR CORP
Common Stock
S - Sale -976 30,102 -3.14 65.60 -64,026 1,974,672
2018-06-25 2018-06-22 4 NUE NUCOR CORP
Common Stock
S - Sale -501 31,078 -1.59 65.59 -32,861 2,038,387
2018-06-25 2018-06-22 4 NUE NUCOR CORP
Common Stock
S - Sale -207 31,579 -0.65 65.58 -13,575 2,070,932
2018-06-25 2018-06-22 4 NUE NUCOR CORP
Common Stock
S - Sale -388 31,786 -1.21 65.57 -25,441 2,084,189
2018-06-25 2018-06-22 4 NUE NUCOR CORP
Common Stock
S - Sale -500 32,174 -1.53 65.56 -32,780 2,109,308
2018-06-25 2018-06-22 4 NUE NUCOR CORP
Common Stock
S - Sale -707 32,674 -2.12 65.55 -46,344 2,141,762
2018-06-25 2018-06-22 4 NUE NUCOR CORP
Common Stock
S - Sale -1,000 33,381 -2.91 65.54 -65,540 2,187,772
2018-06-25 2018-06-22 4 NUE NUCOR CORP
Common Stock
S - Sale -120 34,381 -0.35 65.53 -7,864 2,252,968
2018-06-25 2018-06-22 4 NUE NUCOR CORP
Common Stock
S - Sale -6,883 34,501 -16.63 65.52 -450,974 2,260,487
2018-06-05 2018-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 3,959 41,384 10.58
2018-06-05 2018-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -106 37,425 -0.28 64.19 -6,804 2,402,292
2018-06-05 2018-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -128 37,531 -0.34 64.19 -8,216 2,409,096
2018-06-05 2018-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -131 37,659 -0.35 64.19 -8,409 2,417,313
2018-02-21 2018-02-19 4 NUE NUCOR CORP
Common Stock
A - Award 2,422 37,784 6.85
2017-06-05 2017-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 2,194 35,343 6.62
2017-06-05 2017-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 1,055 33,149 3.29
2017-06-05 2017-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -141 32,094 -0.44 58.10 -8,192 1,864,645
2017-06-05 2017-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -144 32,235 -0.44 58.10 -8,366 1,872,837
2017-06-05 2017-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -136 32,379 -0.42 58.10 -7,902 1,881,203
2017-02-22 2017-02-20 4 NUE NUCOR CORP
Common Stock
A - Award 1,809 32,509 5.89
2016-06-03 2016-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 2,071 30,681 7.24
2016-06-03 2016-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 1,277 28,610 4.67
2016-06-03 2016-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -145 27,333 -0.53 48.51 -7,034 1,325,910
2016-06-03 2016-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -137 27,478 -0.50 48.51 -6,646 1,332,944
2016-06-03 2016-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -156 27,615 -0.56 48.51 -7,568 1,339,590
2016-03-14 2016-03-10 4 NUE NUCOR CORP
Common Stock
A - Award 368 27,764 1.34 43.54 16,010 1,208,832
2016-02-23 2016-02-22 4 NUE NUCOR CORP
Common Stock
A - Award 1,720 27,396 6.70
2015-06-03 2015-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 2,527 25,651 10.93
2015-06-03 2015-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 1,309 23,124 6.00
2015-06-03 2015-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -136 21,815 -0.62 47.30 -6,433 1,031,850
2015-06-03 2015-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -155 21,951 -0.70 47.30 -7,332 1,038,282
2015-06-03 2015-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -193 22,106 -0.87 47.30 -9,129 1,045,614
2015-02-17 2015-02-16 4 NUE NUCOR CORP
Common Stock
A - Award 1,353 22,293 6.46
2014-06-03 2014-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -137 20,921 -0.65 50.63 -6,936 1,059,230
2014-06-03 2014-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -193 21,058 -0.91 50.63 -9,772 1,066,167
2014-06-03 2014-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -155 21,251 -0.72 50.63 -7,848 1,075,938
2014-06-03 2014-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 2,019 21,406 10.41
2014-06-03 2014-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 1,231 19,387 6.78
2014-02-19 2014-02-17 4 NUE NUCOR CORP
Common Stock
A - Award 1,353 18,149 8.06
2013-06-04 2013-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -138 16,693 -0.82 44.51 -6,142 743,005
2013-06-04 2013-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -136 16,831 -0.80 44.51 -6,053 749,148
2013-06-04 2013-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -194 16,967 -1.13 44.51 -8,635 755,201
2013-06-04 2013-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 2,338 17,161 15.77
2013-06-04 2013-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 1,400 14,823 10.43
2013-02-15 2013-02-14 4 NUE NUCOR CORP
Common Stock
A - Award 1,804 13,423 15.53
2012-06-04 2012-06-01 4 NUE NUCOR CORP
Common Stock
F - Taxes -569 11,619 -4.67 35.76 -20,347 415,495
2012-06-04 2012-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 1,605 12,188 15.17
2012-06-04 2012-06-01 4 NUE NUCOR CORP
Common Stock
A - Award 1,743 10,583 19.72
2010-05-17 3 NUE NUCOR CORP
Common Stock
7,724
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)