Amkor Technology, Inc.
US ˙ NasdaqGS ˙ US0316521006

Introduction

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

Security Title Latest Reported Holdings
US:AMKR / Amkor Technology, Inc. Director 102,980
US:CMCSA / Comcast Corporation CEO - Comcast Cable 175,335
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 N Watson. 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 Purchases AMKR / Amkor Technology, Inc. - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in AMKR / Amkor Technology, Inc.. This analysis helps to understand if the insider consistently generates abnormal returns, and is worth following. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Ticker Insider Reported
Shares
Reported
Price
Adjusted
Shares
Adjusted
Price
Cost Basis Days to
Max
Price at
Max
Max
Profit ($)
Max Return (%)
There are no known unplanned open-market trades for this insider and security combination

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

AMKR / Amkor Technology, Inc. Insider Trades
Insider Sales AMKR / Amkor Technology, Inc. - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in AMKR / Amkor Technology, Inc.. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market sales that were not part of an automatic trading plan.

Trade Date Ticker Insider Reported
Shares
Reported
Price
Adjusted
Shares
Adjusted
Price
Cost Basis Days to
Min
Price at
Min
Max Loss
Avoided ($)
Max Loss
Avoided (%)
There are no known unplanned open-market trades for this insider and security combination

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

AMKR / Amkor Technology, Inc. Insider Trades
Insider Trading History

This table shows the complete list of insider trades made by David N Watson 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
2025-05-16 2025-05-14 4 AMKR AMKOR TECHNOLOGY, INC.
Common Stock
M - Exercise 6,017 102,980 6.21
2025-03-14 2025-03-14 4 AMKR AMKOR TECHNOLOGY, INC.
Common Stock
M - Exercise 20,000 96,963 25.99 6.81 136,200 660,318
2024-05-16 2024-05-14 4 AMKR AMKOR TECHNOLOGY, INC.
Common Stock
M - Exercise 8,571 76,963 12.53
2024-05-03 2024-05-02 4 AMKR AMKOR TECHNOLOGY, INC.
Common Stock
M - Exercise 20,000 68,392 41.33 9.87 197,400 675,029
2023-05-18 2023-05-16 4 AMKR AMKOR TECHNOLOGY, INC.
Common Stock
M - Exercise 8,809 48,392 22.25
2022-05-19 2022-05-17 4 AMKR AMKOR TECHNOLOGY, INC.
Common Stock
A - Award 8,706 48,289 21.99
2022-04-18 2022-04-14 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -33,660 175,335 -16.11
2022-04-18 2022-04-14 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -14,649 537,027 -2.66 47.58 -696,999 25,551,741
2022-04-18 2022-04-14 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 33,660 551,676 6.50
2022-03-18 2022-03-17 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -13,360 208,995 -6.01
2022-03-18 2022-03-17 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -5,815 518,016 -1.11 46.48 -270,281 24,077,380
2022-03-18 2022-03-17 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 13,360 523,831 2.62
2022-03-17 2022-03-16 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -14,400 222,355 -6.08
2022-03-17 2022-03-16 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -6,267 510,471 -1.21 46.23 -289,723 23,599,070
2022-03-17 2022-03-16 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 14,400 516,738 2.87
2022-03-17 2022-03-15 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -15,056 236,755 -5.98
2022-03-17 2022-03-15 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -6,553 502,338 -1.29 45.54 -298,424 22,876,469
2022-03-17 2022-03-15 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 15,056 508,891 3.05
2022-03-14 2022-03-11 4 CMCSA COMCAST CORP
Option to Purchase
M - Exercise -169,000 0 -100.00 15.00 -2,534,155
2022-03-14 2022-03-11 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -103,590 493,835 -17.34 45.84 -4,748,566 22,637,393
2022-03-14 2022-03-11 4 CMCSA COMCAST CORP
Class A Common Stock
S - Sale -65,410 597,425 -9.87 45.69 -2,988,452 27,295,150
2022-03-14 2022-03-11 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 169,000 662,835 34.22 15.00 2,534,155 9,939,210
2022-03-03 2022-03-02 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -18,525 251,811 -6.85
2022-03-03 2022-03-02 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -8,509 493,835 -1.69 46.38 -394,647 22,904,063
2022-03-03 2022-03-02 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 18,525 502,344 3.83
2022-03-03 2022-03-01 4 CMCSA COMCAST CORP
Option to Purchase
A - Award 555,055 555,055
2022-02-24 2022-02-22 4 CMCSA COMCAST CORP
Restricted Stock Units
A - Award 132,814 270,336 96.58
2022-02-10 2021-02-11 5 CMCSA COMCAST CORP
Class A Common Stock
G - Gift -7,590 450,469 -1.66
2021-05-19 2021-05-18 4 AMKR AMKOR TECHNOLOGY, INC.
Director Stock Option (Right to Buy)
A - Award 20,000 20,000
2021-05-19 2021-05-18 4 AMKR AMKOR TECHNOLOGY, INC.
Common Stock
A - Award 3,094 39,583 8.48
2021-04-15 2021-04-14 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -10,098 4,721 -68.14
2021-04-15 2021-04-14 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -4,210 483,324 -0.86 53.30 -224,393 25,761,168
2021-04-15 2021-04-14 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 10,098 487,534 2.12
2021-03-19 2021-03-18 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -16,720 14,819 -53.01
2021-03-19 2021-03-18 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -6,971 477,076 -1.44 55.87 -389,470 26,654,234
2021-03-19 2021-03-18 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 16,720 484,047 3.58
2021-03-19 2021-03-17 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -5,010 31,539 -13.71
2021-03-19 2021-03-17 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -2,089 467,327 -0.45 57.50 -120,118 26,871,301
2021-03-19 2021-03-17 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 5,010 469,416 1.08
2021-03-17 2021-03-16 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -12,476 36,549 -25.45
2021-03-17 2021-03-16 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -5,202 464,406 -1.11 58.04 -301,924 26,954,122
2021-03-17 2021-03-16 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 12,476 469,608 2.73
2021-03-17 2021-03-15 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -12,045 49,025 -19.72
2021-03-17 2021-03-15 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -5,022 457,132 -1.09 57.53 -288,916 26,298,802
2021-03-17 2021-03-15 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 12,045 462,154 2.68
2021-03-03 2021-03-01 4 CMCSA COMCAST CORP
Option to Purchase
A - Award 435,200 435,200 54.45 23,696,640 23,696,640
2021-02-12 2021-02-11 4 CMCSA COMCAST CORP
Option to Purchase
M - Exercise -330,000 0 -100.00 12.51 -4,128,300
2021-02-12 2021-02-11 4 CMCSA COMCAST CORP
Option to Purchase
M - Exercise -79,314 0 -100.00 12.63 -1,001,736
2021-02-12 2021-02-11 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -186,057 458,059 -28.89 52.74 -9,813,576 24,160,320
2021-02-12 2021-02-11 4 CMCSA COMCAST CORP
Class A Common Stock
S - Sale -181,281 644,116 -21.96 52.75 -9,562,029 33,975,185
2021-02-12 2021-02-11 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -41,976 825,397 -4.84 52.76 -2,214,444 43,543,817
2021-02-12 2021-02-11 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 79,314 867,373 10.06 12.63 1,001,736 10,954,921
2021-02-12 2021-02-11 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 330,000 788,059 72.04 12.51 4,128,300 9,858,618
2020-05-20 2020-05-19 4 AMKR AMKOR TECHNOLOGY, INC.
Director Stock Option (Right to Buy)
A - Award 20,000 20,000
2020-05-20 2020-05-19 4 AMKR AMKOR TECHNOLOGY, INC.
Common Stock
A - Award 6,106 36,489 20.10
2020-04-16 2020-04-15 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -12,045 61,070 -16.47
2020-04-16 2020-04-15 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -5,497 457,508 -1.19 37.16 -204,269 17,000,995
2020-04-16 2020-04-15 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 12,045 463,005 2.67
2020-04-16 2020-04-14 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -10,098 73,115 -12.14
2020-04-16 2020-04-14 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -4,608 450,960 -1.01 38.52 -177,500 17,370,977
2020-04-16 2020-04-14 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 10,098 455,568 2.27
2020-03-24 2020-03-20 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -16,800 83,213 -16.80
2020-03-24 2020-03-20 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -7,667 445,470 -1.69 33.37 -255,848 14,865,332
2020-03-24 2020-03-20 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 16,800 453,137 3.85
2020-03-20 2020-03-18 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -6,270 100,013 -5.90
2020-03-20 2020-03-18 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -2,862 436,337 -0.65 38.68 -110,702 16,877,513
2020-03-20 2020-03-18 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 6,270 439,199 1.45
2020-03-18 2020-03-17 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -5,010 106,283 -4.50
2020-03-18 2020-03-17 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -2,287 432,929 -0.53 38.22 -87,409 16,546,544
2020-03-18 2020-03-17 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 5,010 435,216 1.16
2020-03-18 2020-03-16 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -12,476 111,293 -10.08
2020-03-18 2020-03-16 4 CMCSA COMCAST CORP
Option to Purchase
M - Exercise -470,000 0 -100.00 9.17 -4,309,900
2020-03-18 2020-03-16 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -267,218 430,206 -38.32 37.45 -10,007,314 16,111,213
2020-03-18 2020-03-16 4 CMCSA COMCAST CORP
Class A Common Stock
S - Sale -117,230 697,424 -14.39 37.30 -4,373,148 26,016,703
2020-03-18 2020-03-16 4 CMCSA COMCAST CORP
Class A Common Stock
S - Sale -85,552 814,654 -9.50 36.69 -3,138,988 29,890,468
2020-03-18 2020-03-16 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -5,694 900,206 -0.63 36.04 -205,212 32,443,422
2020-03-18 2020-03-16 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 12,476 905,900 1.40
2020-03-18 2020-03-16 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 470,000 893,424 111.00 9.17 4,309,900 8,192,698
2020-03-04 2020-03-02 4 CMCSA COMCAST CORP
Option to Purchase
A - Award 643,100 643,100
2020-02-20 2020-02-18 4 CMCSA COMCAST CORP
Restricted Stock Units
A - Award 80,300 137,522 140.33
2019-12-18 2019-12-16 4 CMCSA COMCAST CORP
Option to Purchase
M - Exercise -141,000 169,000 -45.48 15.00 -2,114,295 2,534,155
2019-12-18 2019-12-16 4 CMCSA COMCAST CORP
Option to Purchase
M - Exercise -70,500 213,900 -24.79 20.61 -1,453,005 4,408,479
2019-12-18 2019-12-16 4 CMCSA COMCAST CORP
Option to Purchase
M - Exercise -23,500 195,100 -10.75 29.88 -702,180 5,829,588
2019-12-18 2019-12-16 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -88,290 423,424 -17.25 43.65 -3,853,858 18,482,455
2019-12-18 2019-12-16 4 CMCSA COMCAST CORP
Class A Common Stock
S - Sale -78,100 511,714 -13.24 43.67 -3,410,861 22,348,083
2019-12-18 2019-12-16 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -49,319 589,814 -7.72 43.63 -2,151,788 25,733,582
2019-12-18 2019-12-16 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -19,291 639,133 -2.93 43.60 -840,991 27,863,001
2019-12-18 2019-12-16 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 23,500 658,424 3.70 29.88 702,180 19,673,707
2019-12-18 2019-12-16 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 70,500 634,924 12.49 20.61 1,453,005 13,085,783
2019-12-18 2019-12-16 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 141,000 564,424 33.30 15.00 2,114,295 8,463,537
2019-05-17 2019-05-15 4 AMKR AMKOR TECHNOLOGY, INC.
Director Stock Option (Right to Buy)
A - Award 20,000 20,000
2019-05-17 2019-05-15 4 AMKR AMKOR TECHNOLOGY, INC.
Common Stock
A - Award 8,207 30,383 37.01
2019-04-18 2019-04-16 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -12,476 123,769 -9.16
2019-04-18 2019-04-16 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -5,693 423,424 -1.33 41.97 -238,935 17,771,103
2019-04-18 2019-04-16 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 12,476 429,117 2.99
2019-04-15 2019-04-12 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -10,098 136,245 -6.90
2019-04-15 2019-04-12 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -4,608 415,914 -1.10 41.30 -190,310 17,177,231
2019-04-15 2019-04-12 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 10,098 420,522 2.46
2019-03-25 2019-03-21 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -20,000 146,343 -12.02
2019-03-25 2019-03-21 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -9,126 410,424 -2.18 40.05 -365,496 16,437,464
2019-03-25 2019-03-21 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 20,000 419,550 5.01
2019-03-21 2019-03-20 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -6,300 166,343 -3.65
2019-03-21 2019-03-20 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -2,875 399,550 -0.71 39.47 -113,476 15,770,222
2019-03-21 2019-03-20 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 6,300 402,425 1.59
2019-03-19 2019-03-18 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -6,270 172,643 -3.50
2019-03-19 2019-03-18 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -2,861 396,125 -0.72 39.92 -114,211 15,813,293
2019-03-19 2019-03-18 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 6,270 398,986 1.60
2019-03-19 2019-03-17 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -5,010 178,913 -2.72
2019-03-19 2019-03-17 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -2,286 392,716 -0.58 40.47 -92,514 15,893,199
2019-03-19 2019-03-17 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 5,010 395,002 1.28
2019-03-19 2019-03-15 4 CMCSA COMCAST CORP
Option to Purchase
A - Award 411,000 411,000
2019-02-22 2019-02-21 4 CMCSA COMCAST CORP
Option to Purchase
M - Exercise -428,000 0 -100.00
2019-02-22 2019-02-21 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -226,993 389,992 -36.79 38.38 -8,711,310 14,966,707
2019-02-22 2019-02-21 4 CMCSA COMCAST CORP
Class A Common Stock
S - Sale -201,007 616,985 -24.57 38.30 -7,699,573 23,633,594
2019-02-22 2019-02-21 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 428,000 817,992 109.75 7.27 3,111,560 5,946,799
2019-02-14 2019-02-12 4 CMCSA COMCAST CORP
Restricted Stock Units
A - Award 83,173 140,395 145.35
2019-02-08 2018-09-12 5 CMCSA COMCAST CORP
Class A Common Stock
G - Gift 305,682 440,842 226.16
2019-02-08 2018-09-12 5 CMCSA COMCAST CORP
Class A Common Stock
G - Gift -305,682 389,992 -43.94
2019-02-08 2018-06-28 5 CMCSA COMCAST CORP
Class A Common Stock
G - Gift -3,077 695,674 -0.44
2018-05-16 2018-05-14 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -10,098 57,222 -15.00
2018-05-16 2018-05-14 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -4,620 698,751 -0.66 32.14 -148,487 22,457,844
2018-05-16 2018-05-14 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 10,098 703,371 1.46
2018-05-09 2018-05-08 4 CMCSA COMCAST CORP
Restricted Stock Units
A - Award 67,320 67,320
2018-05-03 2018-05-01 4 AMKR AMKOR TECHNOLOGY, INC.
Director Stock Option (Right to Buy)
A - Award 20,000 20,000
2018-05-03 2018-05-01 4 AMKR AMKOR TECHNOLOGY, INC.
Common Stock
A - Award 4,700 22,176 26.89
2018-04-19 2018-04-17 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -5,010 100,750 -4.74
2018-04-19 2018-04-17 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -2,292 693,273 -0.33 33.27 -76,255 23,065,179
2018-04-19 2018-04-17 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 5,010 695,565 0.73
2018-03-26 2018-03-22 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -24,240 105,760 -18.65
2018-03-26 2018-03-22 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -11,089 689,946 -1.58 33.23 -368,487 22,926,901
2018-03-26 2018-03-22 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 24,240 701,035 3.58
2018-03-22 2018-03-21 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -7,500 130,000 -5.45
2018-03-22 2018-03-21 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -3,431 676,795 -0.50 34.49 -118,335 23,342,655
2018-03-22 2018-03-21 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 7,500 680,226 1.11
2018-03-22 2018-03-20 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -6,300 137,500 -4.38
2018-03-22 2018-03-20 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -2,882 672,726 -0.43 34.57 -99,631 23,256,133
2018-03-22 2018-03-20 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 6,300 675,608 0.94
2018-03-20 2018-03-16 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -6,270 143,800 -4.18
2018-03-20 2018-03-16 4 CMCSA COMCAST CORP
Option to Purchase
A - Award 384,400 384,400
2018-03-20 2018-03-16 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -2,869 669,308 -0.43 35.83 -102,796 23,981,301
2018-03-20 2018-03-16 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 6,270 672,177 0.94
2018-03-08 2018-03-06 4 CMCSA COMCAST CORP
Option to Purchase
M - Exercise -302,000 0 -100.00
2018-03-08 2018-03-06 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -170,553 665,907 -20.39 36.77 -6,271,234 24,485,395
2018-03-08 2018-03-06 4 CMCSA COMCAST CORP
Class A Common Stock
S - Sale -131,447 836,460 -13.58 36.78 -4,835,278 30,769,176
2018-03-08 2018-03-06 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 302,000 967,907 45.35 9.49 2,865,980 9,185,436
2017-08-11 2017-08-10 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -40,320 150,070 -21.18
2017-08-11 2017-08-10 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -19,578 665,907 -2.86 40.73 -797,412 27,122,386
2017-08-11 2017-08-10 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 40,320 685,485 6.25
2017-05-04 2017-05-02 4 AMKR AMKOR TECHNOLOGY, INC.
Common Stock
A - Award 20,000 20,000
2017-05-04 2017-05-02 4 AMKR AMKOR TECHNOLOGY, INC.
Common Stock
A - Award 3,415 17,476 24.29
2017-04-20 2017-04-18 4 CMCSA COMCAST CORP
Restricted Stock Units
M - Exercise -6,270 190,390 -3.19
2017-04-20 2017-04-18 4 CMCSA COMCAST CORP
Class A Common Stock
F - Taxes -3,071 645,165 -0.47 37.59 -115,439 24,251,747
2017-04-20 2017-04-18 4 CMCSA COMCAST CORP
Class A Common Stock
M - Exercise 6,270 648,236 0.98
2017-04-07 3 CMCSA COMCAST CORP
Class A Common Stock
1,423,112
2017-04-07 3 CMCSA COMCAST CORP
Class A Common Stock
787,198
2017-04-07 3 CMCSA COMCAST CORP
Class A Common Stock
782,010
2017-04-07 3 CMCSA COMCAST CORP
Class A Common Stock
917,030
2017-04-07 3 CMCSA COMCAST CORP
Class A Common Stock
1,423,112
2017-04-07 3 CMCSA COMCAST CORP
Class A Common Stock
787,198
2017-04-07 3 CMCSA COMCAST CORP
Class A Common Stock
782,010
2017-04-07 3 CMCSA COMCAST CORP
Class A Common Stock
917,030
2016-05-04 2016-05-04 4 AMKR AMKOR TECHNOLOGY, INC.
Common Stock
A - Award 20,000 20,000
2016-05-04 2016-05-04 4 AMKR AMKOR TECHNOLOGY, INC.
Common Stock
A - Award 7,067 14,061 101.04
2015-05-06 2015-05-05 4 AMKR AMKOR TECHNOLOGY, INC.
Common Stock
A - Award 20,000 20,000
2015-05-06 2015-05-05 4 AMKR AMKOR TECHNOLOGY, INC.
Common Stock
A - Award 5,873 6,994 523.91
2015-03-11 2015-03-05 4 AMKR AMKOR TECHNOLOGY, INC.
Common Stock
A - Award 1,121 1,121
2014-08-21 2014-08-20 4 AMKR AMKOR TECHNOLOGY INC
Director Stock Option (right to buy)
A - Award 20,000 20,000
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)