Introduction

This page provides a comprehensive analysis of the known insider trading history of Seth H Bagshaw. 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 Seth H Bagshaw has reported holdings or trades in the following companies:

Security Title Latest Reported Holdings
US:MKSI / MKS Inc. EVP, CFO & Treasurer 1
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by Seth H Bagshaw. 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 Seth H Bagshaw 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
2024-02-26 2024-02-22 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale -1,000 1 -99.92 124.56 -124,560 98
2024-02-26 2024-02-22 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale -11,612 1,001 -92.07 124.02 -1,440,120 124,118
2024-02-26 2024-02-22 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale -20,253 12,613 -61.62 122.79 -2,486,949 1,548,776
2024-02-16 2024-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes -9,173 32,866 -21.82 122.15 -1,120,482 4,014,556
2024-02-16 2024-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,762 42,039 7.03
2024-02-16 2024-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 6,791 39,277 20.90
2024-02-16 2024-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,430 32,486 8.08
2024-02-16 2024-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 4,129 30,056 15.93
2024-02-16 2024-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 1,525 25,927 6.25
2024-02-16 2024-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,729 24,402 18.04
2023-12-05 2023-12-01 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes -699 20,673 -3.27 84.19 -58,849 1,740,432
2023-12-05 2023-12-01 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 350 21,372 1.66
2023-12-05 2023-12-01 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 349 21,022 1.69
2023-09-07 2023-09-06 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale -7,073 20,547 -25.61 97.66 -690,770 2,006,640
2023-09-07 2023-09-06 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale -17,927 27,620 -39.36 97.16 -1,741,814 2,683,561
2023-02-16 2023-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -6,976 45,396 -13.32 100.29 -699,623 4,552,815
2023-02-16 2023-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,431 52,372 4.87
2023-02-16 2023-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 4,303 49,942 9.43
2023-02-16 2023-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 1,525 45,638 3.46
2023-02-16 2023-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,729 44,114 9.23
2023-02-16 2023-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,180 40,384 5.71
2023-02-16 2023-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,837 38,205 11.16
2022-12-05 2022-12-02 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes -623 34,368 -1.78 83.86 -52,245 2,882,069
2022-12-05 2022-12-02 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 308 34,991 0.89
2022-12-05 2022-12-02 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 315 34,683 0.92
2022-10-31 2022-10-28 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -1,933 34,291 -5.34 84.58 -163,493 2,900,328
2022-10-31 2022-10-28 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 4,358 36,224 13.68
2022-05-02 2022-04-29 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 7,600 28,798 35.85
2022-02-16 2022-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -1,525 21,198 -6.71
2022-02-16 2022-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -3,885 22,723 -14.60
2022-02-16 2022-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,180 26,608 -7.57
2022-02-16 2022-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -3,837 28,788 -11.76
2022-02-16 2022-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,643 32,625 -7.49
2022-02-16 2022-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,941 35,268 -7.70
2022-02-16 2022-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -7,238 31,765 -18.56 152.55 -1,104,157 4,845,700
2022-02-16 2022-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 1,525 39,003 4.07
2022-02-16 2022-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,885 37,478 11.57
2022-02-16 2022-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,180 33,593 6.94
2022-02-16 2022-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,837 31,413 13.91
2022-02-16 2022-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,643 27,576 10.60
2022-02-16 2022-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,941 24,933 13.37
2022-01-24 2022-01-21 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 11,658 38,209 43.91
2021-12-06 2021-12-03 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -194 26,551 -0.73
2021-12-06 2021-12-03 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -325 26,745 -1.20
2021-12-06 2021-12-03 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes -519 21,992 -2.31 156.09 -81,011 3,432,750
2021-12-06 2021-12-03 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 194 22,511 0.87
2021-12-06 2021-12-03 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 325 22,317 1.48
2021-10-29 2021-10-28 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -4,358 27,070 -13.87
2021-10-29 2021-10-28 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -1,933 21,925 -8.10 145.74 -281,715 3,195,313
2021-10-29 2021-10-28 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 4,358 23,858 22.35
2021-04-16 2021-04-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -200 19,410 -1.02 188.40 -37,679 3,656,824
2021-04-16 2021-04-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -4,955 19,610 -20.17 187.78 -930,450 3,682,442
2021-04-16 2021-04-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -1,741 24,565 -6.62 186.65 -324,959 4,585,158
2021-04-16 2021-04-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -704 26,306 -2.61 185.39 -130,512 4,876,840
2021-04-16 2021-04-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -1,400 27,010 -4.93 184.36 -258,110 4,979,747
2021-02-17 2021-02-16 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,180 31,428 -6.49
2021-02-17 2021-02-16 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -3,999 33,608 -10.63
2021-02-17 2021-02-16 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,643 37,607 -6.57
2021-02-17 2021-02-16 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,942 40,250 -6.81
2021-02-17 2021-02-16 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -1,871 43,191 -4.15
2021-02-17 2021-02-16 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,202 45,062 -4.66
2021-02-17 2021-02-16 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 4,769 47,264 11.22
2021-02-17 2021-02-16 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -6,714 28,410 -19.11 172.20 -1,156,151 4,892,272
2021-02-17 2021-02-16 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,180 35,124 6.62
2021-02-17 2021-02-16 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,999 32,944 13.82
2021-02-17 2021-02-16 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,643 28,945 10.05
2021-02-17 2021-02-16 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,942 26,303 12.59
2021-02-17 2021-02-16 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 1,871 23,361 8.70
2021-02-17 2021-02-16 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,202 21,490 11.41
2021-01-26 2021-01-25 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 11,998 42,494 39.34
2020-12-07 2020-12-04 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -277 30,496 -0.90
2020-12-07 2020-12-04 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -249 30,773 -0.80
2020-12-07 2020-12-04 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes -526 19,289 -2.65 151.71 -79,799 2,926,272
2020-12-07 2020-12-04 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 277 19,815 1.42
2020-12-07 2020-12-04 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 249 19,538 1.29
2020-07-24 2020-07-23 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -1,440 19,169 -6.99 126.07 -181,541 2,416,689
2020-07-24 2020-07-23 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -1,493 20,609 -6.75 125.09 -186,756 2,577,992
2020-07-24 2020-07-23 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -2,062 22,102 -8.53 123.57 -254,801 2,731,196
2020-07-24 2020-07-22 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -5 24,164 -0.02 123.00 -615 2,972,224
2020-07-07 2020-07-06 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -5,000 24,169 -17.14 116.84 -584,197 2,823,941
2020-02-19 2020-02-18 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,643 31,022 -7.85
2020-02-19 2020-02-18 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -3,066 33,665 -8.35
2020-02-19 2020-02-18 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -1,871 36,731 -4.85
2020-02-19 2020-02-18 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,202 38,602 -5.40
2020-02-19 2020-02-18 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,835 40,804 -6.50
2020-02-19 2020-02-18 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -3,430 43,639 -7.29
2020-02-19 2020-02-18 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 6,817 47,068 16.94
2020-02-19 2020-02-18 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -6,004 29,051 -17.13 113.87 -683,675 3,308,047
2020-02-19 2020-02-18 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,643 35,055 8.15
2020-02-19 2020-02-18 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,066 32,412 10.45
2020-02-19 2020-02-18 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 1,871 29,347 6.81
2020-02-19 2020-02-18 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,202 27,476 8.71
2020-02-19 2020-02-18 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,835 25,274 12.63
2020-02-19 2020-02-18 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,430 22,439 18.04
2020-01-28 2020-01-27 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 9,197 40,251 29.62
2019-12-10 2019-12-06 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -336 31,054 -1.07
2019-12-10 2019-12-06 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -187 31,390 -0.59
2019-12-10 2019-12-06 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -159 31,577 -0.50
2019-12-10 2019-12-06 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -145 31,736 -0.45
2019-12-10 2019-12-06 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -120 31,881 -0.37
2019-12-10 2019-12-06 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes -947 19,009 -4.75 108.22 -102,484 2,057,168
2019-12-10 2019-12-06 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 336 19,956 1.71
2019-12-10 2019-12-06 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 187 19,620 0.96
2019-12-10 2019-12-06 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 159 19,433 0.82
2019-12-10 2019-12-06 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 145 19,274 0.76
2019-12-10 2019-12-06 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 120 19,129 0.63
2019-10-30 2019-10-29 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale -18,000 18,857 -48.84 112.08 -2,017,440 2,113,494
2019-10-30 2019-10-28 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 8,716 32,001 37.43
2019-02-19 2019-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -1,950 15,120 -11.42
2019-02-19 2019-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,295 8,165 -21.94
2019-02-19 2019-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,954 17,070 -14.75
2019-02-19 2019-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -3,575 10,460 -25.47
2019-02-19 2019-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -4,516 20,024 -18.40
2019-02-19 2019-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -6,914 14,035 -33.00
2019-02-19 2019-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 8,264 24,540 50.78
2019-02-19 2019-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -8,833 36,682 -19.41 84.70 -748,155 3,106,973
2019-02-19 2019-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 1,950 45,515 4.48
2019-02-19 2019-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,295 43,565 5.56
2019-02-19 2019-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,954 41,270 7.71
2019-02-19 2019-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,575 38,316 10.29
2019-02-19 2019-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 4,516 34,741 14.94
2019-02-19 2019-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 6,914 30,225 29.66
2019-01-30 2019-01-28 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
J - Other -3,240 20,949 -13.40
2018-02-21 2018-02-20 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale -5,000 23,069 -17.81 115.21 -576,070 2,657,868
2018-02-16 2018-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,954 10,425 -22.08
2018-02-16 2018-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -3,574 14,063 -20.26
2018-02-16 2018-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -4,515 13,379 -25.23
2018-02-16 2018-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -6,914 17,637 -28.16
2018-02-16 2018-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -3,783 17,894 -17.45
2018-02-16 2018-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -5,234 24,551 -17.57
2018-02-16 2018-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 5,851 16,275 56.12
2018-02-16 2018-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 10,126 24,189 72.00
2018-02-16 2018-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -10,671 28,069 -27.55 111.10 -1,185,548 3,118,462
2018-02-16 2018-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,954 38,740 8.25
2018-02-16 2018-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,574 35,786 11.10
2018-02-16 2018-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 4,515 32,212 16.30
2018-02-16 2018-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 6,914 27,697 33.27
2018-02-16 2018-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,783 20,783 22.25
2018-02-16 2018-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 5,234 17,000 44.48
2018-02-13 2018-02-12 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
J - Other -2,570 29,785 -7.94
2018-01-09 2018-01-08 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -10,000 11,766 -45.94 102.07 -1,020,730 1,201,024
2017-09-14 2017-09-13 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale -7,500 21,615 -25.76 85.80 -643,485 1,854,483
2017-05-12 2017-05-11 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -5,930 32,356 -15.49
2017-05-12 2017-05-11 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -2,790 28,885 -8.81 80.50 -224,595 2,325,273
2017-05-12 2017-05-11 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 5,930 31,675 23.03
2017-03-16 2017-03-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale -5,000 25,746 -16.26 68.27 -341,345 1,757,626
2017-02-28 2017-02-27 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale -7,500 30,746 -19.61 67.00 -502,500 2,059,955
2017-02-16 2017-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -4,515 21,676 -17.24
2017-02-16 2017-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -6,913 38,285 -15.29
2017-02-16 2017-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -3,783 26,191 -12.62
2017-02-16 2017-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -5,234 45,198 -10.38
2017-02-16 2017-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 8,863 29,974 41.98
2017-02-16 2017-02-15 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 13,294 50,432 35.80
2017-02-16 2017-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -9,018 38,246 -19.08 67.70 -610,519 2,589,227
2017-02-16 2017-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 4,515 47,264 10.56
2017-02-16 2017-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 6,913 42,749 19.29
2017-02-16 2017-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,783 35,836 11.80
2017-02-16 2017-02-15 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 5,234 32,053 19.52
2017-02-14 2017-02-13 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
J - Other -3,191 37,138 -7.91
2017-02-14 2017-02-10 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -4,305 21,112 -16.94
2017-02-14 2017-02-10 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -6,457 40,329 -13.80
2017-02-14 2017-02-10 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -3,548 26,819 -11.68 66.95 -237,539 1,795,505
2017-02-14 2017-02-10 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 4,305 30,367 16.52
2017-02-14 2017-02-10 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 6,457 26,061 32.94
2016-11-17 2016-11-16 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale -10,000 19,302 -34.13 55.45 -554,500 1,070,313
2016-08-22 2016-08-19 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale -15,000 29,302 -33.86 47.43 -711,390 1,389,691
2016-07-06 2016-07-05 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 5,930 46,786 14.51
2016-02-29 2016-02-26 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -1,750 43,964 -3.83 32.70 -57,225 1,437,620
2016-02-29 2016-02-25 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -3,715 25,417 -12.75
2016-02-29 2016-02-25 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -5,052 40,856 -11.00
2016-02-29 2016-02-25 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -2,846 45,714 -5.86 32.77 -93,263 1,498,045
2016-02-29 2016-02-25 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,715 48,560 8.28
2016-02-29 2016-02-25 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 5,052 44,845 12.70
2016-02-18 2016-02-17 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -1,600 39,793 -3.87 33.26 -53,216 1,323,504
2016-02-18 2016-02-16 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 13,546 29,132 86.91
2016-02-18 2016-02-16 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 23,931 45,908 108.89
2016-02-18 2016-02-16 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -3,782 15,586 -19.53
2016-02-18 2016-02-16 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -5,234 21,977 -19.23
2016-02-18 2016-02-16 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -2,927 41,393 -6.60 33.22 -97,235 1,375,064
2016-02-18 2016-02-16 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,782 44,320 9.33
2016-02-18 2016-02-16 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 5,234 40,538 14.83
2016-02-12 2016-02-11 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -850 35,304 -2.35 31.96 -27,166 1,128,305
2016-02-12 2016-02-11 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -1,300 36,154 -3.47 31.96 -41,548 1,155,471
2016-02-12 2016-02-10 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -4,304 19,368 -18.18
2016-02-12 2016-02-10 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -6,457 27,211 -19.18
2016-02-12 2016-02-10 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -3,597 37,454 -8.76 32.70 -117,622 1,224,735
2016-02-12 2016-02-10 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 4,304 41,051 11.71
2016-02-12 2016-02-10 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 6,457 36,747 21.32
2016-01-28 2016-01-26 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
J - Other -3,447 33,668 -9.29
2015-06-02 2015-05-29 4 MKSI MKS INSTRUMENTS INC
Common Stock
A - Award 346 29,959 1.17 30.74 10,625 920,822
2015-02-26 2015-02-25 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -3,715 23,672 -13.56
2015-02-26 2015-02-25 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -5,052 37,115 -11.98
2015-02-26 2015-02-25 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -2,850 29,613 -8.78 35.83 -102,116 1,061,047
2015-02-26 2015-02-25 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,715 32,463 12.92
2015-02-26 2015-02-25 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 5,052 28,748 21.32
2015-02-25 2015-02-23 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,119 27,387 -7.18
2015-02-25 2015-02-23 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -3,115 42,167 -6.88
2015-02-25 2015-02-23 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -1,702 23,696 -6.70 35.60 -60,591 843,593
2015-02-25 2015-02-23 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,119 25,398 9.10
2015-02-25 2015-02-23 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,115 23,279 15.45
2015-02-25 2015-02-23 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -2,115 20,164 -9.49 35.30 -74,664 711,823
2015-02-19 2015-02-17 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 11,348 29,506 62.49
2015-02-19 2015-02-17 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 19,149 45,282 73.27
2015-02-11 2015-02-10 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -4,304 18,159 -19.16
2015-02-11 2015-02-10 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -6,456 26,133 -19.81
2015-02-11 2015-02-10 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -1,615 22,279 -6.76 35.78 -57,785 797,136
2015-02-11 2015-02-10 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -3,598 23,894 -13.09 35.86 -129,024 856,832
2015-02-11 2015-02-10 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 4,304 27,492 18.56
2015-02-11 2015-02-10 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 6,456 23,188 38.59
2014-12-02 2014-11-28 4 MKSI MKS INSTRUMENTS INC
Common Stock
A - Award 431 16,732 2.64 24.33 10,482 407,035
2014-11-03 2014-10-31 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -1,000 16,301 -5.78 36.40 -36,402 593,387
2014-10-30 2014-10-29 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -4,000 17,301 -18.78 36.00 -144,016 622,903
2014-10-28 2014-10-24 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -4,000 21,301 -15.81 35.26 -141,040 751,071
2014-09-22 2014-09-19 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -3,500 25,301 -12.15 34.76 -121,678 879,587
2014-09-02 2014-08-28 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -2,600 28,801 -8.28 33.46 -86,983 963,535
2014-08-20 2014-08-19 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -400 31,401 -1.26 33.47 -13,386 1,050,864
2014-07-28 2014-07-24 4 MKSI MKS INSTRUMENTS INC
Common Stock
S - Sale X -5,000 31,801 -13.59 32.62 -163,075 1,037,188
2014-06-04 2014-05-30 4 MKSI MKS INSTRUMENTS INC
Common Stock
A - Award 433 36,801 1.19 24.52 10,625 902,469
2014-03-03 2014-02-28 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,221 22,463 -9.00
2014-03-03 2014-02-28 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -3,153 32,589 -8.82
2014-03-03 2014-02-28 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -1,751 36,368 -4.59 30.06 -52,635 1,093,212
2014-03-03 2014-02-28 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,221 38,119 6.19
2014-03-03 2014-02-28 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,153 35,897 9.63
2014-02-27 2014-02-25 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -3,714 24,684 -13.08
2014-02-27 2014-02-25 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -5,052 35,743 -12.38
2014-02-27 2014-02-25 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -2,854 32,744 -8.02 29.77 -84,964 974,789
2014-02-27 2014-02-25 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,714 30,546 13.84
2014-02-27 2014-02-25 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 5,052 35,598 16.54
2014-02-27 2014-02-24 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,119 28,398 -6.94
2014-02-27 2014-02-24 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -3,115 40,795 -7.10
2014-02-27 2014-02-24 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -1,705 26,832 -5.97 30.02 -51,184 805,498
2014-02-27 2014-02-24 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,119 25,422 9.09
2014-02-27 2014-02-24 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,115 28,537 12.26
2014-02-12 2014-02-10 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 19,370 43,910 78.93
2014-02-12 2014-02-10 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 12,913 30,517 73.36
2014-02-03 2014-01-30 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
J - Other -1,560 24,540 -5.98
2013-12-04 2013-11-29 4 MKSI MKS INSTRUMENTS INC
Common Stock
P - Purchase 443 23,303 1.94 23.96 10,625 558,378
2013-06-04 2013-05-31 4 MKSI MKS INSTRUMENTS INC
Common Stock
P - Purchase 520 22,859 2.33 20.42 10,625 466,717
2013-03-05 2013-03-04 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,000 17,604 -10.20
2013-03-05 2013-03-04 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,700 26,100 -9.37
2013-03-05 2013-03-04 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -1,534 22,339 -6.43 26.96 -41,357 602,255
2013-03-05 2013-03-04 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,000 23,873 9.14
2013-03-05 2013-03-04 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,700 21,873 14.08
2013-03-04 2013-02-28 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,221 19,604 -10.18
2013-03-04 2013-02-28 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -3,153 28,800 -9.87
2013-03-04 2013-02-28 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -1,754 19,173 -8.38 27.14 -47,604 520,350
2013-03-04 2013-02-28 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,221 20,927 11.87
2013-03-04 2013-02-28 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,153 18,706 20.28
2013-02-26 2013-02-25 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 16,716 31,954 109.70
2013-02-26 2013-02-25 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 11,144 21,825 104.34
2013-02-26 2013-02-25 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,119 10,681 -16.56
2013-02-26 2013-02-25 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -3,114 15,238 -16.97
2013-02-26 2013-02-25 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -1,697 15,552 -9.84 26.92 -45,683 418,670
2013-02-26 2013-02-25 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,119 17,249 14.00
2013-02-26 2013-02-25 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,114 15,130 25.92
2013-02-01 2013-01-30 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
J - Other -191 18,352 -1.03
2012-12-05 2012-11-30 4 MKSI MKS INSTRUMENTS INC
Common Stock
P - Purchase 479 12,016 4.15 20.61 9,876 247,684
2012-06-07 2012-05-31 4 MKSI MKS INSTRUMENTS INC
Common Stock
A - Award 478 11,537 4.32 22.23 10,625 256,440
2012-05-30 2012-05-29 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -5,400 12,800 -29.67
2012-05-30 2012-05-29 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -1,712 11,059 -13.41 26.43 -45,248 292,284
2012-05-30 2012-05-29 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 5,400 12,771 73.26
2012-03-06 2012-03-05 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,000 18,200 -9.90
2012-03-06 2012-03-05 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,700 18,543 -12.71
2012-03-06 2012-03-05 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -1,490 7,371 -16.82 28.46 -42,405 209,773
2012-03-06 2012-03-05 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,000 8,861 29.15
2012-03-06 2012-03-05 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,700 6,861 64.89
2012-03-01 2012-02-28 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -2,220 20,200 -9.90
2012-03-01 2012-02-28 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
M - Exercise -3,153 21,243 -12.93
2012-03-01 2012-02-28 4 MKSI MKS INSTRUMENTS INC
Common Stock
F - Taxes X -1,704 4,161 -29.05 30.63 -52,194 127,445
2012-03-01 2012-02-28 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 2,220 5,865 60.91
2012-03-01 2012-02-28 4 MKSI MKS INSTRUMENTS INC
Common Stock
M - Exercise 3,153 3,645 641.79
2012-03-01 2011-02-17 4/A MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
J - Other -200 8,100 -2.41
2012-02-27 2012-02-27 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
J - Other -266 24,863 -1.06
2012-02-27 2012-02-27 4/A MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
J - Other -266 24,596 -1.07
2012-02-24 2012-02-23 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 6,357 22,420 39.58
2012-02-24 2012-02-23 4 MKSI MKS INSTRUMENTS INC
Restricted Stock Unit
A - Award 9,536 25,129 61.15
2010-01-08 3 MKSI MKS INSTRUMENTS INC
Common Stock
11,482
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)