Introduction

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

Security Title Latest Reported Holdings
US:ONNN / SVP & GM, Auto & Pwr Grp 95,478
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 Andrew Williams. 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 Andrew Williams 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
2011-08-09 2011-08-05 4 ONNN ON SEMICONDUCTOR CORP
Common
F - Taxes -7,227 95,478 -7.04 7.23 -52,251 690,305
2011-08-09 2011-08-05 4 ONNN ON SEMICONDUCTOR CORP
Common
A - Award 19,724 102,705 23.77 7.23 142,605 742,557
2011-05-10 2011-05-06 4 ONNN ON SEMICONDUCTOR CORP
Common
F - Taxes -6,224 82,481 -7.02 11.24 -69,958 927,085
2011-05-10 2011-05-06 4 ONNN ON SEMICONDUCTOR CORP
Common
A - Award 19,724 88,705 28.59 11.24 221,698 997,043
2011-03-07 2011-03-03 4 ONNN ON SEMICONDUCTOR CORP
Common
F - Taxes -3,681 68,481 -5.10 11.08 -40,785 758,769
2011-02-28 2011-02-24 4 ONNN ON SEMICONDUCTOR CORP
Common
F - Taxes -6,224 72,162 -7.94 11.10 -69,086 800,997
2011-02-28 2011-02-24 4 ONNN ON SEMICONDUCTOR CORP
Common
F - Taxes -3,156 78,386 -3.87 11.10 -35,032 870,084
2011-02-28 2011-02-24 4 ONNN ON SEMICONDUCTOR CORP
Common
A - Award 10,000 81,542 13.98 11.10 111,000 905,115
2011-02-28 2011-02-24 4 ONNN ON SEMICONDUCTOR CORP
Common
A - Award 19,724 71,542 38.06 11.10 218,936 794,115
2011-02-16 2011-02-14 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale -13,500 51,818 -20.67 11.60 -156,655 601,300
2011-02-04 2009-09-10 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise -20,000 10,000 -66.67 6.83 -136,600 68,300
2011-02-04 2009-09-10 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise -20,000 60,000 -25.00 9.00 -180,000 540,000
2011-02-04 2009-09-10 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise -9,000 0 -100.00 4.80 -43,200
2011-02-04 2009-09-10 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale -40,000 64,818 -38.16 9.00 -360,000 583,361
2011-02-04 2009-09-10 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale -9,000 104,818 -7.91 8.75 -78,750 917,157
2011-02-04 2009-09-10 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise 9,000 113,818 8.59 4.80 43,200 546,326
2011-02-04 2009-09-10 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise 20,000 104,818 23.58 5.93 118,600 621,570
2011-02-04 2009-09-10 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise 20,000 84,818 30.86 6.83 136,600 579,306
2011-02-04 2009-09-08 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise -10,000 0 -100.00 4.52 -45,200
2011-02-04 2009-09-08 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale -10,000 64,818 -13.37 8.50 -85,000 550,952
2011-02-04 2009-09-08 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise 10,000 74,818 15.43 4.52 45,200 338,177
2011-01-13 2011-01-11 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale X -13,506 64,818 -17.24 11.00 -148,566 712,997
2011-01-10 2011-01-07 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale X -12,997 78,324 -14.23 10.70 -139,068 838,066
2011-01-10 2011-01-06 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise X -10,000 20,000 -33.33 6.83 -68,300 136,600
2011-01-10 2011-01-06 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise X -48,750 16,250 -75.00 9.21 -448,890 149,630
2011-01-10 2011-01-06 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise X -20,000 60,000 -25.00 5.93 -118,600 355,800
2011-01-10 2011-01-06 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale X -48,750 91,321 -34.80 10.34 -503,982 944,085
2011-01-10 2011-01-06 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale X -20,000 140,071 -12.49 10.34 -206,738 1,447,899
2011-01-10 2011-01-06 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale X -13,426 160,071 -7.74 10.40 -139,630 1,664,737
2011-01-10 2011-01-06 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale X -10,000 173,497 -5.45 10.28 -102,800 1,783,548
2011-01-10 2011-01-06 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale X -7,988 183,497 -4.17 10.31 -82,346 1,891,615
2011-01-10 2011-01-06 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale X -5,339 191,485 -2.71 10.30 -54,992 1,972,295
2011-01-10 2011-01-06 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale X -4,500 196,824 -2.24 10.30 -46,350 2,027,286
2011-01-10 2011-01-06 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale X -3,651 201,324 -1.78 10.28 -37,532 2,069,610
2011-01-10 2011-01-06 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale X -1,026 204,975 -0.50 10.32 -10,585 2,115,341
2011-01-10 2011-01-06 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise X 10,000 206,001 5.10 6.83 68,300 1,406,984
2011-01-10 2011-01-06 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise X 20,000 196,001 11.36 5.93 118,600 1,162,283
2011-01-10 2011-01-06 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise X 48,750 176,001 38.31 9.21 448,890 1,620,613
2010-11-08 2010-11-04 4 ONNN ON SEMICONDUCTOR CORP
Common
F - Taxes -6,224 127,251 -4.66 8.01 -49,854 1,019,277
2010-11-08 2010-11-04 4 ONNN ON SEMICONDUCTOR CORP
Common
A - Award 19,724 133,475 17.34 8.01 157,989 1,069,131
2010-08-09 2010-08-05 4 ONNN ON SEMICONDUCTOR CORP
Common
F - Taxes -6,224 113,751 -5.19 6.69 -41,639 760,991
2010-08-09 2010-08-05 4 ONNN ON SEMICONDUCTOR CORP
Common
A - Award 19,724 119,975 19.67 6.69 131,954 802,630
2010-05-07 2010-05-05 4 ONNN ON SEMICONDUCTOR CORP
Common
F - Taxes -6,218 100,251 -5.84 7.75 -48,190 776,942
2010-05-07 2010-05-05 4 ONNN ON SEMICONDUCTOR CORP
Common
A - Award 19,724 106,469 22.74 7.75 152,861 825,131
2010-03-09 2010-03-05 4 ONNN ON SEMICONDUCTOR CORP
Common
F - Taxes -1,682 86,745 -1.90 8.22 -13,826 713,040
2010-03-05 2010-03-03 4 ONNN ON SEMICONDUCTOR CORP
Common
F - Taxes -3,679 88,427 -3.99 8.20 -30,168 725,098
2010-03-01 2010-02-25 4 ONNN ON SEMICONDUCTOR CORP
Common
F - Taxes -6,727 92,106 -6.81 7.99 -53,749 735,923
2010-03-01 2010-02-25 4 ONNN ON SEMICONDUCTOR CORP
Common
A - Award 19,724 98,833 24.93 7.99 157,595 789,672
2009-11-06 2009-11-04 4 ONNN ON SEMICONDUCTOR CORP
Common
F - Taxes -6,298 79,109 -7.37 6.83 -43,015 540,312
2009-11-06 2009-11-04 4 ONNN ON SEMICONDUCTOR CORP
Common
A - Award 19,724 85,407 30.03
2009-08-20 2009-08-18 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale -13,610 65,636 -17.17 7.90 -107,519 518,522
2009-08-07 2009-08-05 4 ONNN ON SEMICONDUCTOR CORP
Common
F - Taxes -6,113 79,246 -7.16 7.51 -45,909 595,135
2009-08-07 2009-08-05 4 ONNN ON SEMICONDUCTOR CORP
Common
A - Award 19,723 85,359 30.05 7.51 148,120 641,043
2009-03-25 2009-03-23 4 ONNN ON SEMICONDUCTOR CORP
Common
F - Taxes -1,561 61,195 -2.49 4.61 -7,196 282,108
2009-03-06 2009-03-05 4 ONNN ON SEMICONDUCTOR CORP
Common
F - Taxes -1,995 62,756 -3.08 3.67 -7,322 230,313
2009-03-05 2009-03-03 4 ONNN ON SEMICONDUCTOR CORP
Common
F - Taxes -4,364 64,751 -6.31 3.31 -14,445 214,325
2008-03-26 2008-03-23 4 ONNN ON SEMICONDUCTOR CORP
Common
F - Taxes -1,560 67,115 -2.27 5.22 -8,143 350,339
2008-03-07 2008-03-05 4 ONNN ON SEMICONDUCTOR CORP
Common
F - Taxes -1,804 68,675 -2.56 5.90 -10,644 405,181
2008-03-05 2008-03-03 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
A - Award 80,000 80,000
2008-03-05 2008-03-03 4 ONNN ON SEMICONDUCTOR CORP
Common
A - Award 35,000 70,479 98.65
2007-10-25 2007-10-23 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise X -5,000 10,000 -33.33 4.52 -22,600 45,200
2007-10-25 2007-10-23 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale X -5,000 34,979 -12.51 13.00 -65,000 454,732
2007-10-25 2007-10-23 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise X 5,000 39,979 14.29 4.52 22,600 180,707
2007-10-03 2007-10-01 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise X -10,000 30,000 -25.00 6.83 -68,300 204,900
2007-10-03 2007-10-01 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale X -10,000 34,979 -22.23 12.61 -126,100 441,090
2007-10-03 2007-10-01 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise X 10,000 43,500 29.85 6.83 68,300 297,105
2007-03-07 2007-03-05 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
A - Award 65,000 65,000
2007-03-07 2007-03-05 4 ONNN ON SEMICONDUCTOR CORP
Common
A - Award 16,000 33,500 91.43
2007-02-26 2007-02-23 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale -685 3,441 -16.60 10.74 -7,357 36,955
2007-02-26 2007-02-23 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale -1,375 17,500 -7.28 10.60 -14,575 185,500
2007-02-26 2007-02-22 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise -10,000 0 -100.00
2007-02-26 2007-02-22 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise -4,500 9,000 -33.33
2007-02-26 2007-02-22 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise -3,750 0 -100.00
2007-02-26 2007-02-22 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale -15,950 18,875 -45.80 10.51 -167,634 198,376
2007-02-26 2007-02-22 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale -1,300 34,825 -3.60 10.52 -13,676 366,359
2007-02-26 2007-02-22 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale -1,000 36,125 -2.69 10.52 -10,525 380,216
2007-02-26 2007-02-22 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise 3,750 37,125 11.24 1.25 4,688 46,406
2007-02-26 2007-02-22 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise 4,500 33,375 15.58 4.80 21,600 160,200
2007-02-26 2007-02-22 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise 10,000 28,875 52.98 7.02 70,200 202,702
2007-01-10 2007-01-10 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise X -10,000 10,000 -50.00
2007-01-10 2007-01-10 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale X -10,000 18,875 -34.63 8.25 -82,500 155,719
2007-01-10 2007-01-10 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise X 10,000 28,875 52.98 7.02 70,200 202,702
2007-01-10 2007-01-08 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise X -2,000 0 -100.00
2007-01-10 2007-01-08 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise X -9,000 0 -100.00
2007-01-10 2007-01-08 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise X -11,667 0 -100.00
2007-01-10 2007-01-08 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise X -11,250 3,750 -75.00
2007-01-10 2007-01-08 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale X -22,917 18,875 -54.84 8.00 -183,336 151,000
2007-01-10 2007-01-08 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale X -11,000 41,792 -20.84 7.75 -85,250 323,888
2007-01-10 2007-01-08 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale -1,500 52,792 -2.76 8.00 -12,000 422,336
2007-01-10 2007-01-08 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise X 2,000 54,292 3.82 6.12 12,250 332,538
2007-01-10 2007-01-08 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise X 9,000 52,292 20.79 3.22 28,980 168,380
2007-01-10 2007-01-08 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise X 11,250 43,292 35.11 1.25 14,062 54,115
2007-01-10 2007-01-08 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise X 11,667 32,042 57.26 1.50 17,500 48,063
2007-01-08 2007-01-04 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise X -4,500 13,500 -25.00
2007-01-08 2007-01-04 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise X -5,000 15,000 -25.00
2007-01-08 2007-01-04 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale X -9,500 20,375 -31.80 7.50 -71,250 152,812
2007-01-08 2007-01-04 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise X 4,500 29,875 17.73 4.80 21,600 143,400
2007-01-08 2007-01-04 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise X 5,000 25,375 24.54 4.52 22,600 114,695
2006-12-13 2006-12-12 4 ONNN ON SEMICONDUCTOR CORP
Stock Option (right to buy)
M - Exercise X -2,000 0 -100.00
2006-12-13 2006-12-12 4 ONNN ON SEMICONDUCTOR CORP
Common
S - Sale X -2,000 19,875 -9.14 7.86 -15,720 156,218
2006-12-13 2006-12-12 4 ONNN ON SEMICONDUCTOR CORP
Common
M - Exercise X 2,000 21,875 10.06 3.86 7,720 84,438
2006-06-07 2006-06-05 4 ONNN ON SEMICONDUCTOR CORP
Common Stock
A - Award 15,000 19,875 307.69
2006-05-31 3 ONNN ON SEMICONDUCTOR CORP
Common Stock
4,875
2006-05-31 3 ONNN ON SEMICONDUCTOR CORP
Common Stock
4,126
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)