Insider trading

Period: 120 months Stock: MKSI Share of holding: 50% or more × + Add filter Clear all
Views & alerts

Save your view. Keep the filter you have built, and get an email when a new filing matches it. A free account does both.

When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

15 decisions over 120 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

15 decisions over 120 months
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

15 decisions over 120 months
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

15 decisions over 120 months
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
15 decisions over 120 months
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
15 decisions over 120 months Remove this filter
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

15 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
5 Jun 2026
McCarthy Michelle M SVP & Chief Accounting Officer
Sold on a plan
$767.27K 2,434 at 315.23
99.9%
Sold half or more
22 May 2026
Sold on a plan
$2.78M 8,810 at 315.48
100.0%
Sold half or more
20 Feb 2026
McCarthy Michelle M VP & Chief Accounting Officer
Sold at will 2×
$366.50K 1,466 at 250.00
100%
Sold half or more
16 Aug 2024
Williams John Edward EVP & GM, PSD
Sold at will
$213.68K 1,800 at 118.71
99.3%
Sold half or more
22 Feb 2024
BAGSHAW SETH H EVP, CFO & Treasurer
Sold at will 3×
$4.05M 32,865 at 123.28
100.0%
Sold half or more
6 Sep 2023
BAGSHAW SETH H EVP, CFO & Treasurer
Sold at will 2×
$2.43M 25,000 at 97.30
54.9%
Sold half or more
5 May 2020
Sold, plan not stated
$1.74M 18,143 at 95.95
90.2%
Sold half or more
6 Jun 2018
Abrams John R Sr. VP, Global Sales
Sold, plan not stated
$15.66K 133 at 117.77
100%
Sold half or more
21 Feb 2018
Abrams John R Sr. VP, Global Sales & Service
Sold, plan not stated
$1.13M 9,831 at 114.94
100.0%
Sold half or more
20 Feb 2018
Lee John Tseng-Chung Sr. VP & COO
Sold, plan not stated 2×
$1.55M 13,432 at 115.38
100.0%
Sold half or more
15 Feb 2018
PHILLIPPY ROBERT J Director · indirect
Sold, plan not stated
$1.09M 10,000 at 109.15
57.6%
Sold half or more
13 Nov 2017
Lee John Tseng-Chung Sr. VP & COO
Sold, plan not stated
$219.78K 2,113 at 104.02
100.0%
Sold half or more
14 Mar 2017
Abrams John R Sr. VP, Global Sales & Service
Sold, plan not stated
$809.54K 12,066 at 67.09
100.0%
Sold half or more
22 Feb 2017
Lee John Tseng-Chung Sr. VP & COO
Sold, plan not stated
$1.00M 14,734 at 67.99
100.0%
Sold half or more
17 Nov 2016
Werth Dennis L Sr. VP, Business Units
Sold, plan not stated
$131.60K 2,333 at 56.41
100%
Sold half or more
Showing 1–15 of 15.