SEC CIK 1192439

BAGSHAW SETH H

Reported ownership across 1 company, sourced from SEC Form 4 filings and updated daily.

Current Positions

CompanyShares OwnedAs Of
MKSIview stock →12,612.792024-02-22

Position History — MKSI

Reported shares owned immediately after each Form 4 transaction, over time.

017,45834,91552,3732010-012013-022015-022017-022020-022022-022024-02

Recent Filings — MKSI

DateActivitySharesPriceOwned After
2024-02-22Open-market sale20,253$122.7912,612.79
2024-02-22Open-market sale1,000$124.560.79
2024-02-22Open-market sale11,612$124.021,000.79
2024-02-15Option exercise (derivative)4,129—37,653.84
2024-02-15Option exercise (derivative)6,791—28,432.84
2024-02-15Option exercise (derivative)2,430—35,223.84
2024-02-15Option exercise (derivative)2,762—25,670.84
2024-02-15Option exercise (derivative)1,525.16—41,782.84
2024-02-15Option exercise (derivative)3,728.96—43,308.01
2024-02-15Option exercise2,430—32,485.79
2024-02-15Option exercise2,762—42,038.79
2024-02-15Option exercise6,791—39,276.79
2024-02-15Tax withholding9,173$122.1532,865.79
2024-02-15Option exercise4,129—30,055.79
2024-02-15Option exercise1,525.16—25,926.79
2024-02-15Option exercise3,728.96—24,401.62
2024-02-05Grant / award (derivative)20,374.79—47,036.96
2023-12-01Option exercise (derivative)350—26,662.18
2023-12-01Option exercise (derivative)349—27,012.18
2023-12-01Option exercise349—21,021.67
2023-12-01Option exercise350—21,371.67
2023-12-01Tax withholding699$84.1920,672.67
2023-09-06Open-market sale17,927$97.1627,619.6
2023-09-06Open-market sale7,073$97.6620,546.6
2023-02-15Option exercise (derivative)4,303—29,792.18
2023-02-15Option exercise (derivative)1,525—34,095.18
2023-02-15Option exercise (derivative)2,179.98—39,349.18
2023-02-15Option exercise (derivative)3,836.89—41,529.16
2023-02-15Option exercise (derivative)3,729—35,620.18
2023-02-15Option exercise (derivative)2,431—27,361.18
2023-02-15Grant / award (derivative)8,637.45—45,366.05
2023-02-15Tax withholding6,976$100.2945,396.5
2023-02-15Option exercise4,303—49,941.5
2023-02-15Option exercise1,525—45,638.5
2023-02-15Option exercise3,729—44,113.5
2023-02-15Option exercise2,179.98—40,384.5
2023-02-15Option exercise3,836.89—38,204.52
2023-02-15Option exercise2,431—52,372.5
2023-02-08Grant / award (derivative)12,911.59—36,728.6
2022-12-02Option exercise (derivative)315—24,125.02
2022-12-02Option exercise (derivative)308—23,817.02
2022-12-02Tax withholding623$83.8634,367.62
2022-12-02Option exercise315—34,682.62
2022-12-02Option exercise308—34,990.62
2022-10-28Option exercise (derivative)4,358.06—24,440.02
2022-10-28Option exercise4,358.06—36,223.94
2022-10-28Tax withholding1,933$84.5834,290.94
2022-04-29Grant / award (derivative)7,600.02—28,798.07
2022-02-15Option exercise (derivative)3,837—28,788.06
2022-02-15Option exercise (derivative)3,885—22,723.06
2022-02-15Option exercise (derivative)2,180—26,608.06
2022-02-15Option exercise (derivative)1,525—21,198.06
2022-02-15Option exercise (derivative)2,642.82—32,625.06
2022-02-15Option exercise (derivative)2,940.72—35,267.88
2022-02-15Option exercise1,525—39,002.67
2022-02-15Tax withholding7,238$152.5531,764.67
2022-02-15Option exercise3,885—37,477.67
2022-02-15Option exercise2,180—33,592.67
2022-02-15Option exercise3,837—31,412.67
2022-02-15Option exercise2,642.82—27,575.67
2022-02-15Option exercise2,940.72—24,932.84
2022-01-21Grant / award (derivative)11,657.96—38,208.6
2021-12-03Option exercise (derivative)325—26,744.64
2021-12-03Option exercise (derivative)194—26,550.64
2021-12-03Option exercise194—22,511.12
2021-12-03Tax withholding519$156.0921,992.12
2021-12-03Option exercise325—22,317.12
2021-10-28Option exercise (derivative)4,358.06—27,069.64
2021-10-28Option exercise4,358.06—23,857.75
2021-10-28Tax withholding1,933$145.7421,924.75
2021-04-15Open-market sale1,400$184.3627,010.41
2021-04-15Open-market sale200$188.4019,410.41
2021-04-15Open-market sale704$185.3926,306.41
2021-04-15Open-market sale1,741$186.6524,565.41
2021-04-15Open-market sale4,955$187.7819,610.41
2021-02-16Option exercise (derivative)3,999—33,607.7
2021-02-16Option exercise (derivative)2,180—31,427.7
2021-02-16Option exercise (derivative)2,642.82—37,606.7
2021-02-16Option exercise (derivative)2,941.72—40,249.52
2021-02-16Option exercise (derivative)1,870.59—43,191.24
2021-02-16Option exercise (derivative)2,201.69—45,061.83
2021-02-16Grant / award (derivative)4,769.16—47,263.52
2021-02-16Option exercise2,201.69—21,490.28
2021-02-16Option exercise1,870.59—23,360.86
2021-02-16Option exercise2,941.72—26,302.59
2021-02-16Option exercise2,642.82—28,945.41
2021-02-16Option exercise2,180—35,124.41
2021-02-16Tax withholding6,714$172.2028,410.41
2021-02-16Option exercise3,999—32,944.41
2021-01-25Grant / award (derivative)11,997.89—42,494.35
2020-12-04Option exercise (derivative)277—30,496.46
2020-12-04Option exercise (derivative)249—30,773.46
2020-12-04Tax withholding526$151.7119,288.59
2020-12-04Option exercise249—19,537.59
2020-12-04Option exercise277—19,814.59
2020-07-23Open-market sale2,062$123.5722,102.42
2020-07-23Open-market sale1,493$125.0920,609.42
2020-07-23Open-market sale1,440$126.0719,169.42
2020-07-22Open-market sale5$123.0024,164.42
2020-07-06Open-market sale5,000$116.8424,169.42
2020-02-18Option exercise (derivative)3,065.72—33,665.28
2020-02-18Option exercise (derivative)1,871—36,731
2020-02-18Option exercise (derivative)2,202—38,602
2020-02-18Option exercise (derivative)2,642.82—31,022.46
2020-02-18Option exercise (derivative)3,429.78—43,638.63
2020-02-18Grant / award (derivative)6,816.98—47,068.41
2020-02-18Option exercise (derivative)2,834.63—40,804
2020-02-18Option exercise1,871—29,346.54
2020-02-18Option exercise2,834.63—25,273.54
2020-02-18Option exercise3,065.72—32,412.26
2020-02-18Option exercise2,642.82—35,055.09
2020-02-18Tax withholding6,004$113.8729,051.09
2020-02-18Option exercise3,429.78—22,438.91
2020-02-18Option exercise2,202—27,475.54
2020-01-27Grant / award (derivative)9,197.17—40,251.43
2019-12-06Option exercise (derivative)336—31,054.26
2019-12-06Option exercise (derivative)120—31,881.26
2019-12-06Option exercise (derivative)145—31,736.26
2019-12-06Option exercise (derivative)159—31,577.26
2019-12-06Option exercise (derivative)187—31,390.26
2019-12-06Tax withholding947$108.2219,009.13
2019-12-06Option exercise120—19,129.13
2019-12-06Option exercise145—19,274.13
2019-12-06Option exercise336—19,956.13
2019-12-06Option exercise159—19,433.13
2019-12-06Option exercise187—19,620.13
2019-10-29Open-market sale18,000$112.0818,857.02
2019-10-28Grant / award (derivative)8,716.12—32,001.26
2019-02-15Option exercise (derivative)2,295—8,165.47
2019-02-15Option exercise (derivative)2,954—17,069.68
2019-02-15Option exercise (derivative)3,575—10,460.47
2019-02-15Option exercise (derivative)6,913.52—14,035.47
2019-02-15Grant / award (derivative)8,264.46—24,539.73
2019-02-15Option exercise (derivative)1,950—15,119.68
2019-02-15Option exercise (derivative)4,516.06—20,023.68
2019-02-15Option exercise3,575—38,316.09
2019-02-15Option exercise4,516.06—34,741.09
2019-02-15Option exercise6,913.52—30,225.04
2019-02-15Option exercise2,954—41,270.09
2019-02-15Option exercise2,295—43,565.09
2019-02-15Tax withholding8,833$84.7036,682.09
2019-02-15Option exercise1,950—45,515.09
2019-01-28J (derivative)3,240.32—20,948.99
2018-02-20Open-market sale5,000$115.2123,068.97
2018-02-15Option exercise (derivative)2,954—10,424.69
2018-02-15Option exercise (derivative)3,574—14,063.3
2018-02-15Option exercise (derivative)5,234.13—24,551.3
2018-02-15Option exercise (derivative)6,914—17,637.3
2018-02-15Option exercise (derivative)3,782.52—17,893.69
2018-02-15Grant / award (derivative)10,126.01—24,189.31
2018-02-15Grant / award (derivative)5,850.59—16,275.27
2018-02-15Option exercise (derivative)4,515—13,378.69
2018-02-15Option exercise4,515—32,211.97
2018-02-15Option exercise3,782.52—20,782.97
2018-02-15Option exercise6,914—27,696.97
2018-02-15Option exercise3,574—35,785.97
2018-02-15Tax withholding10,671$111.1028,068.97
2018-02-15Option exercise2,954—38,739.97
2018-02-15Option exercise5,234.13—17,000.45
2018-02-12J (derivative)2,570.16—29,785.43
2018-01-08Open-market sale10,000$102.0711,766.32
2017-09-13Open-market sale7,500$85.8021,614.53
2017-05-11Option exercise (derivative)5,929.79—32,355.59
2017-05-11Tax withholding2,790$80.5028,885.38
2017-05-11Option exercise5,929.79—31,675.38
2017-03-15Open-market sale5,000$68.2725,745.59
2017-02-27Open-market sale7,500$67.0030,745.59
2017-02-15Option exercise (derivative)4,515—21,676.2
2017-02-15Option exercise (derivative)6,913—38,285.38
2017-02-15Option exercise (derivative)3,783—26,191.2
2017-02-15Option exercise (derivative)5,234—45,198.38
2017-02-15Grant / award (derivative)8,862.63—29,974.2
2017-02-15Grant / award (derivative)13,293.94—50,432.38
2017-02-15Option exercise6,913—42,748.59
2017-02-15Tax withholding9,018$67.7038,245.59
2017-02-15Option exercise5,234—32,052.59
2017-02-15Option exercise4,515—47,263.59
2017-02-15Option exercise3,783—35,835.59
2017-02-13J (derivative)3,190.85—37,138.44
2017-02-10Option exercise (derivative)6,456.84—40,329.29
2017-02-10Option exercise (derivative)4,305.22—21,111.58
2017-02-10Tax withholding3,548$66.9526,818.59
2017-02-10Option exercise4,305.22—30,366.59
2017-02-10Option exercise6,456.84—26,061.37
2016-11-16Open-market sale10,000$55.4519,302.31
2016-08-19Open-market sale15,000$47.4329,302.31
2016-07-05Grant / award (derivative)5,929.79—46,786.12
2016-02-26Open-market sale1,750$32.7043,963.92
2016-02-25Option exercise (derivative)5,052.14—40,856.33
2016-02-25Option exercise (derivative)3,715.13—25,416.8
2016-02-25Option exercise3,715.13—48,559.92
2016-02-25Tax withholding2,846$32.7745,713.92
2016-02-25Option exercise5,052.14—44,844.79
2016-02-17Open-market sale1,600$33.2639,792.66
2016-02-16Grant / award (derivative)23,931.37—45,908.47
2016-02-16Option exercise (derivative)5,234—21,977.1
2016-02-16Grant / award (derivative)13,546.06—29,131.93
2016-02-16Option exercise (derivative)3,782—15,585.87
2016-02-16Option exercise5,234—40,537.66
2016-02-16Option exercise3,782—44,319.66
2016-02-16Tax withholding2,927$33.2241,392.66
2016-02-11Open-market sale1,300$31.9636,153.66
2016-02-11Open-market sale850$31.9635,303.66
2016-02-10Option exercise (derivative)6,457—27,211.1
2016-02-10Option exercise (derivative)4,304—19,367.87
2016-02-10Option exercise4,304—41,050.66
2016-02-10Option exercise6,457—36,746.66
2016-02-10Tax withholding3,597$32.7037,453.66
2016-01-26J (derivative)3,446.81—33,668.1
2015-05-29Grant / award345.69$30.7429,959.06
2015-02-25Option exercise (derivative)5,051.94—37,114.91
2015-02-25Option exercise (derivative)3,715—23,671.87
2015-02-25Option exercise5,051.94—28,748.37
2015-02-25Tax withholding2,850$35.8329,613.37
2015-02-25Option exercise3,715—32,463.37
2015-02-23Option exercise (derivative)2,119.28—27,386.87
2015-02-23Option exercise (derivative)3,115.35—42,166.85
2015-02-23Tax withholding1,702$35.6023,696.43
2015-02-23Option exercise3,115.35—23,279.15
2015-02-23Open-market sale2,115$35.3020,163.8
2015-02-23Option exercise2,119.28—25,398.43
2015-02-17Grant / award (derivative)19,148.94—45,282.2
2015-02-17Grant / award (derivative)11,347.52—29,506.15
2015-02-10Option exercise (derivative)4,304—18,158.63
2015-02-10Option exercise (derivative)6,456—26,133.26
2015-02-10Open-market sale1,615$35.7822,278.8
2015-02-10Option exercise6,456—23,187.8
2015-02-10Option exercise4,304—27,491.8
2015-02-10Tax withholding3,598$35.8623,893.8
2014-11-28Grant / award430.86$24.3316,731.8
2014-10-31Open-market sale1,000$36.4016,300.94
2014-10-29Open-market sale4,000$36.0017,300.94
2014-10-24Open-market sale4,000$35.2621,300.94
2014-09-19Open-market sale3,500$34.7725,300.94
2014-08-28Open-market sale2,600$33.4628,800.94
2014-08-19Open-market sale400$33.4731,400.94
2014-07-24Open-market sale5,000$32.6231,800.94
2014-05-30Grant / award433.27$24.5236,800.94
2014-02-28Option exercise (derivative)2,221.23—22,462.63
2014-02-28Option exercise (derivative)3,153.45—32,589.26
2014-02-28Option exercise2,221.23—38,118.67
2014-02-28Tax withholding1,751$30.0636,367.67
2014-02-28Option exercise3,153.45—35,897.45
2014-02-25Option exercise (derivative)3,714—24,683.86
2014-02-25Option exercise (derivative)5,051.94—35,742.71
2014-02-25Option exercise3,714—30,546.05
2014-02-25Tax withholding2,854$29.7732,744
2014-02-25Option exercise5,051.94—35,598
2014-02-24Option exercise (derivative)2,119—28,397.86
2014-02-24Option exercise (derivative)3,115.43—40,794.65
2014-02-24Option exercise3,115.43—28,537.05
2014-02-24Option exercise2,119—25,421.63
2014-02-24Tax withholding1,705$30.0226,832.05
2014-02-10Grant / award (derivative)19,369.84—43,910.08
2014-02-10Grant / award (derivative)12,913.22—30,516.86
2014-01-30J (derivative)1,560.18—24,540.25
2013-11-29Open-market buy443.41$23.9623,302.63
2013-05-31Open-market buy520.4$20.4222,859.22
2013-03-04Option exercise (derivative)2,000—17,603.64
2013-03-04Option exercise (derivative)2,700—26,100.42
2013-03-04Tax withholding1,534$26.9622,338.82
2013-03-04Option exercise2,700—21,872.82
2013-03-04Option exercise2,000—23,872.82
2013-02-28Option exercise (derivative)3,153.45—28,800.42
2013-02-28Option exercise (derivative)2,221—19,603.64
2013-02-28Tax withholding1,754$27.1419,172.82
2013-02-28Option exercise2,221—20,926.82
2013-02-28Option exercise3,153.45—18,705.82
2013-02-25Option exercise (derivative)2,119—10,680.5
2013-02-25Grant / award (derivative)11,144.13—21,824.64
2013-02-25Option exercise (derivative)3,114.43—15,237.68
2013-02-25Grant / award (derivative)16,716.2—31,953.88
2013-02-25Option exercise3,114.43—15,130.36
2013-02-25Option exercise2,119—17,249.36
2013-02-25Tax withholding1,697$26.9215,552.36
2013-01-30J (derivative)190.72—18,352.11
2012-11-30Open-market buy479.13$20.6112,015.94
2012-05-31Grant / award478$22.2311,536.81
2012-05-29Option exercise (derivative)5,400—12,799.5
2012-05-29Option exercise5,400—12,770.81
2012-05-29Tax withholding1,712$26.4311,058.81
2012-03-05Option exercise (derivative)2,000—18,199.5
2012-03-05Option exercise (derivative)2,700—18,542.83
2012-03-05Option exercise2,700—6,860.81
2012-03-05Tax withholding1,490$28.467,370.81
2012-03-05Option exercise2,000—8,860.81
2012-02-28Option exercise (derivative)2,220—20,199.5
2012-02-28Option exercise (derivative)3,153.45—21,242.83
2012-02-28Tax withholding1,704$30.634,160.81
2012-02-28Option exercise2,220—5,864.81
2012-02-28Option exercise3,153.45—3,644.81
2012-02-27J (derivative)266.49—24,862.77
2012-02-27J (derivative)266.49—24,596.28
2012-02-23Grant / award (derivative)9,535.92—25,129.26
2012-02-23Grant / award (derivative)6,357.28—22,419.5
2011-11-30Grant / award491.35$21.62491.35
2011-07-21Open-market sale581$27.000.94
2011-05-31Grant / award581.94$18.26581.94
2011-03-29Open-market sale2,866$31.740
2011-03-28Option exercise (derivative)4,200—16,062.23
2011-03-28Tax withholding1,334$32.322,866
2011-03-28Option exercise4,200—4,200
2011-03-28Option exercise (derivative)4,200$0.0016,062.23
2011-03-28Open-market sale2,866$31.740
2011-03-28Option exercise4,200$32.324,200
2011-03-28Tax withholding1,334$32.322,866
2011-03-07Open-market sale3,207$31.040
2011-03-04Option exercise (derivative)2,000—20,262.23
2011-03-04Option exercise (derivative)2,700—15,593.34
2011-03-04Option exercise2,700—2,700
2011-03-04Tax withholding1,493$32.053,207
2011-03-04Option exercise2,000—4,700
2011-02-28Grant / award (derivative)6,662.23—22,262.23
2011-02-28Grant / award (derivative)9,993.34—18,293.34
2011-02-17J (derivative)100—8,300
2011-02-17Open-market sale656$30.540
2011-02-17J (derivative)200—8,100
2010-11-30Grant / award656$16.19656
2010-04-22Open-market sale14,138$22.050
2010-03-05Option exercise (derivative)4,200$0.0015,600
2010-03-05Tax withholding1,544$19.1014,138
2010-03-05Option exercise4,200$0.0015,682
2010-03-04Grant / award (derivative)8,400$0.008,400
2010-03-04Grant / award (derivative)6,000$0.0019,800
2010-01-01———11,482

Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.