Introduction

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

Security Title Latest Reported Holdings
US:MPC / Marathon Petroleum Corporation Sr. VP, Supply Distrib. & Plan 24,871
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by Palmer C. Michael. 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 Palmer C. Michael 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
2018-03-05 2018-03-01 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
A - Award 24,871 24,871
2018-03-05 2018-03-01 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 4,446 61,569 7.78
2018-03-05 2018-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -829 57,123 -1.43 64.86 -53,769 3,704,977
2018-03-05 2018-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -1,038 57,952 -1.76 64.86 -67,325 3,758,746
2018-03-05 2018-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -547 58,990 -0.92 64.86 -35,478 3,826,071
2018-02-02 2018-01-31 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 1,779 59,537 3.08
2017-12-18 2017-12-14 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
M - Exercise -16,914 0 -100.00
2017-12-18 2017-12-14 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
M - Exercise -16,916 16,914 -50.00
2017-12-18 2017-12-14 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
M - Exercise -16,916 16,914 -50.00
2017-12-18 2017-12-14 4 MPC Marathon Petroleum Corp
Common Stock
S - Sale -16,914 57,758 -22.65 65.00 -1,099,410 3,754,249
2017-12-18 2017-12-14 4 MPC Marathon Petroleum Corp
Common Stock
M - Exercise 16,914 74,672 29.28 20.84 352,572 1,556,531
2017-12-18 2017-12-14 4 MPC Marathon Petroleum Corp
Common Stock
S - Sale -16,916 57,758 -22.65 64.57 -1,092,266 3,729,413
2017-12-18 2017-12-14 4 MPC Marathon Petroleum Corp
Common Stock
M - Exercise 16,916 74,674 29.29 20.84 352,614 1,556,573
2017-12-18 2017-12-14 4 MPC Marathon Petroleum Corp
Common Stock
M - Exercise 16,916 74,674 29.29 20.84 352,614 1,556,573
2017-12-18 2017-12-14 4 MPC Marathon Petroleum Corp
Common Stock
S - Sale -16,916 57,758 -22.65 64.77 -1,095,649 3,740,965
2017-12-14 2017-12-12 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
M - Exercise -17,298 0 -100.00
2017-12-14 2017-12-12 4 MPC Marathon Petroleum Corp
Common Stock
S - Sale -17,298 57,758 -23.05 64.55 -1,116,586 3,728,258
2017-12-14 2017-12-12 4 MPC Marathon Petroleum Corp
Common Stock
M - Exercise 17,298 75,056 29.95 12.87 222,625 965,967
2017-09-18 2017-09-14 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
M - Exercise -11,450 0 -100.00
2017-09-18 2017-09-14 4 MPC Marathon Petroleum Corp
Common Stock
S - Sale -11,450 57,758 -16.54 53.02 -607,079 3,062,303
2017-09-18 2017-09-14 4 MPC Marathon Petroleum Corp
Common Stock
M - Exercise 11,450 69,208 19.82 21.69 248,350 1,501,111
2017-05-25 2017-05-24 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
M - Exercise -4,000 0 -100.00
2017-05-25 2017-05-24 4 MPC Marathon Petroleum Corp
Common Stock
S - Sale -4,000 57,757 -6.48 53.25 -213,000 3,075,566
2017-05-25 2017-05-24 4 MPC Marathon Petroleum Corp
Common Stock
M - Exercise 4,000 61,757 6.93 25.88 103,500 1,597,965
2017-05-22 2017-05-18 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
M - Exercise -4,568 4,000 -53.31
2017-05-22 2017-05-18 4 MPC Marathon Petroleum Corp
Common Stock
S - Sale -4,568 57,757 -7.33 52.04 -237,696 3,005,391
2017-05-22 2017-05-18 4 MPC Marathon Petroleum Corp
Common Stock
M - Exercise 4,568 62,325 7.91 25.88 118,197 1,612,662
2017-03-03 2017-03-01 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
A - Award 40,590 40,590
2017-03-03 2017-03-01 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 5,668 57,757 10.88
2017-03-03 2017-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -1,293 52,089 -2.42 50.74 -65,607 2,642,991
2017-03-03 2017-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -880 53,382 -1.62 50.74 -44,651 2,708,598
2017-03-03 2017-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -948 54,262 -1.72 50.74 -48,102 2,753,249
2017-02-03 2017-02-01 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 1,999 55,210 3.76
2016-03-03 2016-03-01 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
A - Award 57,974 57,974
2016-03-03 2016-03-01 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 8,346 53,210 18.60
2016-03-03 2016-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -603 44,864 -1.33 34.44 -20,767 1,545,116
2016-03-03 2016-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -650 45,467 -1.41 34.44 -22,386 1,565,883
2016-03-02 2016-02-29 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -524 46,117 -1.12 34.54 -18,099 1,592,881
2016-02-03 2016-02-01 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 2,382 46,641 5.38
2015-03-04 2015-03-02 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
A - Award 21,408 21,408
2015-03-04 2015-03-02 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 2,840 22,129 14.72
2015-03-04 2015-03-02 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -452 19,289 -2.29 102.68 -46,411 1,980,614
2015-03-04 2015-03-02 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -563 19,741 -2.77 102.68 -57,809 2,027,026
2015-03-03 2015-02-27 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -262 20,304 -1.27 106.58 -27,924 2,164,021
2015-02-03 2015-01-30 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 1,151 20,566 5.93
2014-12-09 2014-12-05 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -55 19,415 -0.28 94.57 -5,201 1,836,087
2014-03-05 2014-03-03 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
A - Award 20,507 20,507
2014-03-05 2014-03-03 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 3,059 19,470 18.64
2014-03-04 2014-03-03 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -820 16,411 -4.76 84.18 -69,028 1,381,471
2014-03-03 2014-02-27 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -262 17,231 -1.50 85.68 -22,448 1,476,345
2014-02-26 2014-02-24 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -1,166 17,493 -6.25 88.78 -103,517 1,553,021
2013-12-09 2013-12-05 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -55 18,659 -0.29 84.11 -4,626 1,569,397
2013-06-05 2013-06-03 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -1,090 18,714 -5.50 81.59 -88,933 1,526,853
2013-05-07 2013-05-03 4 MPC Marathon Petroleum Corp
Common Stock
I - Other -987 2,748 -26.42 77.76 -76,749 213,692
2013-03-18 2013-03-14 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
M - Exercise -2,322 8,649 -21.16
2013-03-18 2013-03-14 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
M - Exercise -1,426 10,971 -11.50
2013-03-18 2013-03-14 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
M - Exercise -7,153 0 -100.00
2013-03-18 2013-03-14 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
M - Exercise -1,500 7,153 -17.34
2013-03-18 2013-03-14 4 MPC Marathon Petroleum Corp
Common Stock
S - Sale -2,322 19,804 -10.49 87.00 -202,014 1,722,924
2013-03-18 2013-03-14 4 MPC Marathon Petroleum Corp
Common Stock
M - Exercise 2,322 22,126 11.73 2,322.00 5,391,684 51,375,934
2013-03-18 2013-03-14 4 MPC Marathon Petroleum Corp
Common Stock
S - Sale -1,426 19,804 -6.72 87.50 -124,775 1,732,826
2013-03-18 2013-03-14 4 MPC Marathon Petroleum Corp
Common Stock
M - Exercise 1,426 21,230 7.20 1,426.00 2,033,476 30,273,588
2013-03-18 2013-03-14 4 MPC Marathon Petroleum Corp
Common Stock
S - Sale -7,153 19,804 -26.54 87.00 -622,311 1,722,924
2013-03-18 2013-03-14 4 MPC Marathon Petroleum Corp
Common Stock
M - Exercise 7,153 26,957 36.12 24.79 177,323 668,257
2013-03-18 2013-03-14 4 MPC Marathon Petroleum Corp
Common Stock
S - Sale -1,500 19,804 -7.04 87.50 -131,250 1,732,826
2013-03-18 2013-03-14 4 MPC Marathon Petroleum Corp
Common Stock
M - Exercise 1,500 21,304 7.57 24.79 37,185 528,119
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
M - Exercise -4,900 12,397 -28.33
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
M - Exercise -3,490 17,297 -16.79
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
M - Exercise -6,981 8,653 -44.65
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
M - Exercise -4,759 0 -100.00
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
M - Exercise -2,843 0 -100.00
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
M - Exercise -203 2,843 -6.66
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Stock Appreciation Right
M - Exercise -2,570 0 -100.00
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Common Stock
S - Sale -4,900 19,804 -19.84 87.79 -430,171 1,738,569
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Common Stock
M - Exercise 4,900 24,704 24.74 25.74 126,126 635,874
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Common Stock
S - Sale -3,490 19,804 -14.98 87.92 -306,841 1,741,144
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Common Stock
M - Exercise 3,490 23,294 17.62 25.74 89,833 599,580
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Common Stock
S - Sale -6,981 19,804 -26.06 88.16 -615,445 1,745,896
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Common Stock
M - Exercise 6,981 26,785 35.25 24.79 173,059 663,993
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Common Stock
S - Sale -4,759 19,804 -19.37 88.18 -419,649 1,746,292
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Common Stock
M - Exercise 4,759 24,563 24.03 32.06 152,574 787,481
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Common Stock
M - Exercise 2,843 19,804 16.76 21.90 62,262 433,702
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Common Stock
S - Sale -203 16,961 -1.18 88.16 -17,896 1,495,190
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Common Stock
M - Exercise 203 17,164 1.20 21.90 4,446 375,886
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Common Stock
D - Sale to Issuer -1,196 16,961 -6.59 88.26 -105,559 1,496,954
2013-03-15 2013-03-13 4 MPC Marathon Petroleum Corp
Common Stock
M - Exercise 2,570 18,157 16.49 14.25 36,622 258,733
2013-03-05 2013-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -563 15,587 -3.49 83.68 -47,112 1,304,293
2013-03-01 2013-02-27 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
A - Award 15,687 15,687
2013-03-01 2013-02-27 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 2,466 16,150 18.02
2013-01-04 2013-01-02 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -331 13,684 -2.36 63.51 -21,022 869,050
2012-12-07 2012-12-05 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -42 14,015 -0.30 58.69 -2,465 822,517
2012-03-02 2012-02-29 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
A - Award 30,813 30,813
2012-03-02 2012-02-29 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 5,295 14,056 60.44
2012-01-05 2012-01-03 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -290 8,761 -3.20 34.16 -9,906 299,288
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)