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MKS Instruments Inc (MKSI) Insider Trading

Total insider buys:
  • $326,655.00
Total insider sells:
  • $239,092,565.20
Most recent insider trade:
  • March 12, 2026
Most active insider trader:
  • Elizabeth Mora
Trader NameDateTitleAmountPriceTypeTotal Value
Jan. 28, 2016VP1,000$36.00Sell$36,000.00
Dec. 16, 2015VP1,000$36.03Sell$36,030.00
Dec. 16, 2015Director1,500$36.09Sell$54,135.00
July 15, 2015Director12,000$36.68Sell$440,160.00
May 28, 2015Director1,600$37.72Sell$60,352.00
May 14, 2015VP10,747$36.36Sell$390,760.92
April 27, 2015CEO5,000$36.08Sell$180,400.00
March 2, 2015Director12,000$35.58Sell$426,960.00
Feb. 23, 2015CFO2,115$35.30Sell$74,659.50
Feb. 17, 2015CEO6,000$35.30Sell$211,800.00
Feb. 10, 2015CFO1,615$35.78Sell$57,784.70
Jan. 30, 2015VP1,041$36.09Sell$37,569.69
Jan. 23, 2015VP1,040$34.76Sell$36,150.40
Jan. 16, 2015VP1,040$33.10Sell$34,424.00
Dec. 12, 2014VP1,041$35.97Sell$37,444.77
Dec. 5, 2014VP1,040$36.17Sell$37,616.80
Dec. 2, 2014Director1,875$36.09Sell$67,668.75
Nov. 21, 2014VP1,040$36.30Sell$37,752.00
Nov. 10, 2014VP2,058$36.58Sell$75,281.64
Oct. 31, 2014CFO1,000$36.40Sell$36,400.00
Oct. 29, 2014CFO4,000$36.00Sell$144,000.00
Oct. 24, 2014CFO4,000$35.26Sell$141,040.00
Oct. 23, 2014CEO3,000$35.00Sell$105,000.00
Sept. 19, 2014CFO3,500$34.77Sell$121,695.00
Aug. 28, 2014CFO2,600$33.46Sell$86,996.00
Aug. 14, 2014Director3,000$32.75Sell$98,250.00
Aug. 8, 2014Director9,069$32.39Sell$293,744.91
July 28, 2014Director2,000$31.97Sell$63,940.00
July 24, 2014CFO5,000$32.62Sell$163,100.00
June 13, 2014VP9,128$29.55Sell$269,732.40
June 13, 2014Director3,418$29.61Sell$101,206.98
June 5, 2014Director2,000$29.64Sell$59,280.00
June 5, 2014CEO3,000$29.50Sell$88,500.00
June 4, 2014Director3,000$28.65Sell$85,950.00
May 16, 2014Director1,000$27.18Sell$27,180.00
March 4, 2014Director5,111$30.25Sell$154,607.75
Feb. 7, 2014Director4,000$28.95Sell$115,800.00
Feb. 4, 2014Director1,875$29.75Sell$55,781.25
Feb. 3, 2014Director12,000$29.69Sell$356,280.00
Dec. 16, 2013CEO5,000$29.15Sell$145,750.00
Dec. 6, 2013Director5,000$29.39Sell$146,950.00
Oct. 18, 2013CEO31,800$29.02Sell$922,836.00
May 30, 2013VP2,732$28.07Sell$76,687.24
April 12, 2013VP1,394$26.73Sell$37,261.62
Nov. 26, 2012Director12,000$24.09Sell$289,080.00
Aug. 9, 2012Director6,000$27.15Sell$162,900.00
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  • Insiders are both buying and selling MKS Instruments Inc stock.

  • The insider traders at MKS Instruments Inc are: Elizabeth Mora, Seth H Bagshaw, Peter Hanley, Gerard G Colella, Brian Charles Quirk, Jacqueline F Moloney, John Tseng-Chung Lee, Richard S Chute, Robert R Anderson, David Philip Henry, Kathleen Flaherty Burke, John R Abrams, Eric Robert Taranto, Seth H. Bagshaw, Cristina Amon, Gerald G Colella, Gerard G. Colella, Gregory R Beecher, John Edward Williams, John R. Abrams, Leo Berlinghieri, Paul Loomis, Peter Cannone III, Richard Chute, Robert Anderson, Michelle M Mccarthy, Dennis L Werth, and Carlyle Partners Vi Cayman Hol

  • The most active insider trader at MKS Instruments Inc is Elizabeth Mora with 35 trades.

  • Carlyle Partners Vi Cayman Hol has sold the most MKS Instruments Inc stock with a total value of $344,480,000.00.

  • David Philip Henry has bought the most MKS Instruments Inc stock with a total value of $341,700.00.

  • The most recent insider trade for MKS Instruments Inc was on March 12, 2026.

  • The single biggest insider buy for MKS Instruments Inc was from David Philip Henry with a total value of $170,850.00 on Nov. 7, 2023.

  • The single biggest insider sell for MKS Instruments Inc was from Carlyle Partners Vi Cayman Hol with a total value of $172,240,000.00 on May 8, 2023.