Introduction

This page provides a comprehensive analysis of the known insider trading history of Griffith Timothy T.. 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 Griffith Timothy T. has reported holdings or trades in the following companies:

Security Title Latest Reported Holdings
US:MPC / Marathon Petroleum Corporation President, Speedway LLC 71,131
US:MPLX / MPLX LP - Limited Partnership Director 36,846
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by Griffith Timothy T.. 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 Griffith Timothy T. 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
2021-05-18 2021-05-14 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 6,331 71,131 9.77
2021-05-18 2021-05-14 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 5,457 64,800 9.20
2021-05-18 2021-05-14 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -3,764 59,343 -5.96 59.61 -224,372 3,537,436
2021-03-03 2021-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -1,156 63,107 -1.80 55.88 -64,597 3,526,419
2021-02-02 2021-01-29 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 4,120 64,263 6.85
2020-12-30 2020-12-28 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -2,470 60,143 -3.94 40.78 -100,727 2,452,632
2020-12-30 2020-12-28 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -1,046 62,613 -1.64 40.78 -42,656 2,553,358
2020-03-04 2020-03-02 4 MPC Marathon Petroleum Corp
Employee Stock Option (right to buy)
A - Award 91,198 91,198
2020-03-04 2020-03-02 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 12,446 63,659 24.30
2020-03-04 2020-03-02 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -1,235 51,213 -2.35 46.95 -57,983 2,404,450
2020-03-04 2020-03-02 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -1,046 52,448 -1.96 46.95 -49,110 2,462,434
2020-03-04 2020-03-02 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -1,186 53,494 -2.17 46.95 -55,683 2,511,543
2020-01-29 2020-01-27 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 2,926 54,680 5.65
2019-03-05 2019-03-01 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
A - Award 53,557 53,557
2019-03-05 2019-03-01 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 8,169 51,754 18.74
2019-03-05 2019-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -1,011 43,585 -2.27 62.66 -63,349 2,731,036
2019-03-05 2019-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -1,147 44,596 -2.51 62.66 -71,871 2,794,385
2019-03-05 2019-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -1,206 45,743 -2.57 62.66 -75,568 2,866,256
2019-03-05 2019-03-01 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
A - Award 9,645 36,846 35.46
2019-03-05 2019-03-01 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
F - Taxes -1,173 27,201 -4.13 33.24 -38,991 904,161
2019-03-05 2019-03-01 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
F - Taxes -962 28,374 -3.28 33.24 -31,977 943,152
2019-03-05 2019-03-01 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
F - Taxes -1,102 29,336 -3.62 33.24 -36,630 975,129
2019-01-30 2019-01-28 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 2,063 46,949 4.60
2019-01-29 2019-01-25 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
A - Award 1,045 30,438 3.56
2018-03-05 2018-03-01 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
A - Award 38,688 38,688
2018-03-05 2018-03-01 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 6,915 44,886 18.21
2018-03-05 2018-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -1,147 37,971 -2.93 64.86 -74,394 2,462,799
2018-03-05 2018-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -1,220 39,118 -3.02 64.86 -79,129 2,537,193
2018-03-05 2018-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -545 40,338 -1.33 64.86 -35,349 2,616,323
2018-03-05 2018-03-01 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
A - Award 8,026 29,393 37.56
2018-03-05 2018-03-01 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
F - Taxes -962 21,367 -4.31 34.66 -33,343 740,580
2018-03-05 2018-03-01 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
F - Taxes -1,102 22,329 -4.70 34.66 -38,195 773,923
2018-03-05 2018-03-01 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
F - Taxes -321 23,431 -1.35 34.66 -11,126 812,118
2018-02-02 2018-01-31 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
A - Award 526 23,752 2.26
2018-02-02 2018-01-31 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 1,773 40,883 4.53
2017-03-03 2017-03-01 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
A - Award 6,576 23,226 39.50
2017-03-03 2017-03-01 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
F - Taxes -1,168 16,650 -6.56 37.87 -44,232 630,536
2017-03-03 2017-03-01 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
F - Taxes -340 17,818 -1.87 37.87 -12,876 674,768
2017-03-03 2017-03-01 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
F - Taxes -144 18,158 -0.79 37.87 -5,453 687,643
2017-03-03 2017-03-01 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
A - Award 56,180 56,180
2017-03-03 2017-03-01 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 7,845 39,110 25.09
2017-03-03 2017-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -1,431 31,265 -4.38 50.74 -72,609 1,586,386
2017-03-03 2017-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -874 32,696 -2.60 50.74 -44,347 1,658,995
2017-03-03 2017-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -260 33,570 -0.77 50.74 -13,192 1,703,342
2017-02-03 2017-02-01 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
A - Award 92 18,302 0.51
2017-02-03 2017-02-01 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 793 33,830 2.40
2016-03-03 2016-03-01 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
A - Award 7,539 18,210 70.65
2016-03-03 2016-03-01 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
F - Taxes -233 10,671 -2.14 26.04 -6,067 277,873
2016-03-03 2016-03-01 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
F - Taxes -99 10,904 -0.90 26.04 -2,578 283,940
2016-03-03 2016-03-01 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
A - Award 64,193 64,193
2016-03-03 2016-03-01 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 9,241 33,037 38.83
2016-03-03 2016-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -601 23,796 -2.46 34.44 -20,698 819,534
2016-03-03 2016-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -260 24,397 -1.05 34.44 -8,954 840,233
2016-03-02 2016-02-29 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
F - Taxes -122 11,003 -1.10 25.83 -3,151 284,207
2016-03-02 2016-02-29 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -219 24,657 -0.88 34.54 -7,564 851,653
2016-02-03 2016-02-01 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 984 24,876 4.12
2016-02-03 2016-02-01 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
A - Award 234 11,125 2.15
2015-08-31 2015-08-28 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
P - Purchase 1,000 10,891 10.11 50.26 50,260 547,382
2015-08-21 2015-08-20 4 MPC Marathon Petroleum Corp
Common Stock
P - Purchase 1,000 23,892 4.37 54.11 54,110 1,292,796
2015-08-21 2015-08-20 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
P - Purchase 1,000 9,891 11.25 51.34 51,340 507,804
2015-03-04 2015-03-02 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
A - Award 2,190 8,891 32.68
2015-03-04 2015-03-02 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
F - Taxes -99 6,701 -1.46 82.17 -8,135 550,621
2015-03-04 2015-03-02 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
A - Award 21,334 21,334
2015-03-04 2015-03-02 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 2,830 11,446 32.85
2015-03-04 2015-03-02 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -130 8,616 -1.49 102.68 -13,348 884,691
2015-03-04 2015-03-02 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -256 8,746 -2.84 102.68 -26,286 898,039
2015-03-03 2015-02-27 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
F - Taxes -121 6,800 -1.75 81.14 -9,818 551,752
2015-03-03 2015-02-27 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -110 9,002 -1.21 106.58 -11,724 959,433
2015-02-03 2015-01-30 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 518 9,112 6.03
2014-08-28 2014-08-26 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -381 8,594 -4.25 90.03 -34,301 773,718
2014-03-05 2014-03-03 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
A - Award 924 6,921 15.41
2014-03-05 2014-03-03 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
A - Award 8,203 8,203
2014-03-05 2014-03-03 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 1,224 8,975 15.79
2014-03-04 2014-03-03 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -256 7,751 -3.20 84.18 -21,550 652,479
2014-03-03 2014-02-27 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
F - Taxes -141 5,997 -2.30 49.36 -6,960 296,012
2014-03-03 2014-02-27 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -128 8,007 -1.57 85.68 -10,967 686,040
2013-08-27 2013-08-26 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -381 8,135 -4.47 75.41 -28,731 613,460
2013-03-05 2013-03-01 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -256 8,516 -2.92 83.68 -21,422 712,619
2013-03-01 2013-02-27 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
A - Award 1,138 6,138 22.76
2013-03-01 2013-02-27 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
A - Award 6,536 6,536
2013-03-01 2013-02-27 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 1,028 8,772 13.27
2012-11-02 2012-10-31 4 MPLX MPLX LP
Common Units (Limited Partner Interests)
P - Purchase 5,000 5,000 22.00 110,000 110,000
2012-08-29 2012-08-27 4 MPC Marathon Petroleum Corp
Common Stock
F - Taxes -424 7,745 -5.19 49.73 -21,086 385,151
2012-03-02 2012-02-29 4 MPC Marathon Petroleum Corp
Stock Option (right to buy)
A - Award 14,006 14,006
2012-03-02 2012-02-29 4 MPC Marathon Petroleum Corp
Common Stock
A - Award 2,407 8,142 41.97
2011-08-03 3 MPC Marathon Petroleum Corp
Common Stock
150
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)