Lee John Tseng-Chung Insider Trading Activity

Average Profitability
6.41%
Insider Buys Quantity
3
Insider Buys Sum
$62,252.60
Insider Sells Quantity
20
Insider Sells Sum
$7M

Insider Activity of Lee John Tseng-Chung

According to the SEC Form 4 filings, Lee John Tseng-Chung, being in a position of

  1. President & CEO at MKS Inc.,
    оver the last 12 months, has bought 0 shares, and sold 78110 shares for $21.09M,
    over all time since 2009-03-02, has bought 2886 shares for $62,253, and sold 256163 shares for $28.09M.

Biography of Lee John Tseng-Chung

No biography is available at this moment.

Statistics of Insider Transactions Last Year

Amount of Insider Buys and Sells by Stocks

Buys
 $000
Sells
 $21,090,5454100

Comparison of Insiders on Amount of Buys and Sells

2026-08-14SaleMKS Inc.
MKSI
President & CEO
10,000
0.0144%
$302.01$3.02M-17.07%
2026-05-22SaleMKS Inc.
MKSI
President & CEO
10,000
0.0146%
$315.48$3.15M-9.07%
2026-02-20SaleMKS Inc.
MKSI
President & CEO
30,000
0.0442%
$256.77$7.7M+5.7%
2026-02-20SaleMKS Inc.
MKSI
President & CEO
28,110
0.0414%
$256.58$7.21M+5.7%
2018-02-20SaleMKS Instruments, Inc.
MKSI
Sr. VP & COO
13,432
0.0248%
$115.38$1.55M-19.42%
2017-11-13SaleMKS Instruments, Inc.
MKSI
Sr. VP & COO
2,113
0.0039%
$104.02$219,784-4.19%
2017-02-22SaleMKS Instruments, Inc.
MKSI
Sr. VP & COO
14,734
0.0272%
$67.99$1M+21.88%
2016-08-10SaleMKS Instruments, Inc.
MKSI
Sr. VP, Business Units
9,955
0.0186%
$46.36$461,524+44.01%
2016-02-26SaleMKS Instruments, Inc.
MKSI
Sr. VP, Business Units
994
0.0019%
$32.70$32,504+46.18%
2016-02-17SaleMKS Instruments, Inc.
MKSI
Sr. VP, Business Units
1,371
0.0026%
$33.26$45,599+43.24%
2016-02-11SaleMKS Instruments, Inc.
MKSI
Sr. VP, Business Units
1,435
0.0027%
$31.96$45,863+48.11%
2015-05-14SaleMKS Instruments, Inc.
MKSI
Sr. VP, Business Units
10,747
0.02%
$36.36$390,750-2.09%
2014-06-13SaleMKS Instruments, Inc.
MKSI
Sr. VP, Business Units
18,256
0.0341%
$29.55$539,392+18.56%
2013-11-29PurchaseMKS Instruments, Inc.
MKSI
Sr. VP, HPS, Controls & PFMC
886.82
0.0013%
$23.96$21,250+3.1%
2013-05-31PurchaseMKS Instruments, Inc.
MKSI
Sr. VP, HPS, Controls & PFMC
1,040.8
0.0014%
$20.42$21,250+2.99%
2013-03-14SaleMKS Instruments, Inc.
MKSI
Sr. VP, HPS, Controls & PFMC
16,320
0.0308%
$27.64$451,003+1.42%
2012-11-30PurchaseMKS Instruments, Inc.
MKSI
Sr. VP, Controls & PFMC
958.26
0.0015%
$20.61$19,753+13.13%
2012-08-06SaleMKS Instruments, Inc.
MKSI
Sr. VP, Controls & PFMC
5,736
0.0109%
$26.67$152,996+2.49%
2012-03-09SaleMKS Instruments, Inc.
MKSI
Sr. VP, Controls & PFMC
17,190
0.0328%
$29.13$500,676-6.71%
2011-11-08SaleMKS Instruments, Inc.
MKSI
Sr. VP, Controls & PFMC
6,280
0.0117%
$27.56$173,089-1.87%
Total: 27
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