Insider trading

Period: 120 months Stock: MKSI Plan: Scheduled (10b5-1) × + Add filter Clear all
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When

Period

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

40 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.

40 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.

40 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.

40 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.
40 decisions over 120 months Remove this filter
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
40 decisions over 120 months
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.

40 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
1 Sep 2026
Mora Elizabeth Director
Sold on a plan
$75.29K 300 at 250.96
1.6%
Planned (10b5-1)
14 Aug 2026
Lee John Tseng-Chung President & CEO
Sold on a plan
$3.02M 10,000 at 302.01
6.9%
Planned (10b5-1)
3 Aug 2026
Williams John Edward EVP & GM, PSD
Sold on a plan
$131.76K 457 at 288.31
10.0%
Planned (10b5-1)
10 Jun 2026
Sold on a plan
$247.91K 781 at 317.42
3.3%
Planned (10b5-1)
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
1 Jun 2026
Mora Elizabeth Director
Sold on a plan
$95.41K 300 at 318.02
1.5%
Planned (10b5-1)
27 May 2026
COLELLA GERALD G Director · indirect
Sold on a plan 7×
$6.67M 20,000 at 333.40
50.0%
Planned (10b5-1)
26 May 2026
Henry David Philip EVP, Global Str Mktg & GM, MSD
Sold on a plan
$826.25K 2,500 at 330.50
13.3%
Planned (10b5-1)
22 May 2026
Lee John Tseng-Chung President & CEO
Sold on a plan
$3.15M 10,000 at 315.48
6.5%
Planned (10b5-1)
22 May 2026
Sold on a plan
$2.78M 8,810 at 315.48
100.0%
Sold half or more
2 Mar 2026
Mora Elizabeth Director
Sold on a plan
$71.83K 300 at 239.44
1.6%
Planned (10b5-1)
2 Dec 2025
Mora Elizabeth Director
Sold on a plan
$47.64K 300 at 158.81
1.6%
Planned (10b5-1)
22 Oct 2025
Sold on a plan
$98.60K 711 at 138.68
3.1%
Planned (10b5-1)
1 Oct 2025
Sold on a plan
$36.64K 300 at 122.14
2.5%
Planned (10b5-1)
18 Sep 2025
Henry David Philip EVP, Global Str Mktg & GM, MSD
Sold on a plan
$650.00K 5,000 at 130.00
24.3%
Planned (10b5-1)
18 Sep 2025
Sold on a plan
$103.91K 838 at 124.00
3.5%
Planned (10b5-1)
2 Sep 2025
Mora Elizabeth Director
Sold on a plan
$29.96K 300 at 99.85
1.5%
Planned (10b5-1)
1 Aug 2025
Sold on a plan
$27.63K 300 at 92.10
2.5%
Planned (10b5-1)
7 Jul 2025
Schreiner James Alan EVP & COO, MSD
Sold on a plan
$98.04K 957 at 102.44
4.0%
Planned (10b5-1)
3 Jul 2025
Henry David Philip EVP, Operations & Corp Mktg
Sold on a plan
$210.00K 2,000 at 105.00
8.9%
Planned (10b5-1)
2 Jun 2025
Mora Elizabeth Director
Sold on a plan
$24.53K 300 at 81.78
1.5%
Planned (10b5-1)
3 Mar 2025
Sold on a plan
$27.74K 300 at 92.46
3.0%
Planned (10b5-1)
3 Mar 2025
Mora Elizabeth Director
Sold on a plan
$25.43K 275 at 92.46
1.6%
Planned (10b5-1)
10 Dec 2024
Sold on a plan
$34.44K 300 at 114.80
2.9%
Planned (10b5-1)
2 Dec 2024
Mora Elizabeth Director
Sold on a plan
$31.19K 275 at 113.41
1.5%
Planned (10b5-1)
1 Oct 2024
Sold on a plan
$27.23K 250 at 108.90
2.4%
Planned (10b5-1)
3 Sep 2024
Mora Elizabeth Director
Sold on a plan
$31.89K 275 at 115.97
1.5%
Planned (10b5-1)
1 Aug 2024
Sold on a plan
$30.87K 250 at 123.46
2.3%
Planned (10b5-1)
3 Jun 2024
Mora Elizabeth Director
Sold on a plan
$35.59K 275 at 129.41
1.5%
Planned (10b5-1)
1 Apr 2024
Mora Elizabeth Director
Sold on a plan
$33.25K 250 at 133.00
1.5%
Planned (10b5-1)
1 Mar 2024
Sold on a plan
$30.72K 250 at 122.89
2.7%
Planned (10b5-1)
9 Feb 2024
COLELLA GERALD G Director · indirect
Sold on a plan
$1.20M 10,000 at 120.00
12.8%
Planned (10b5-1)
22 Jan 2024
COLELLA GERALD G Director · indirect
Sold on a plan
$1.10M 10,000 at 110.00
11.4%
Planned (10b5-1)
2 Jan 2024
Mora Elizabeth Director
Sold on a plan
$25.23K 250 at 100.90
1.4%
Planned (10b5-1)
1 Dec 2023
Sold on a plan
$20.56K 250 at 82.23
2.2%
Planned (10b5-1)
2 Oct 2023
Mora Elizabeth Director
Sold on a plan
$21.79K 250 at 87.15
1.4%
Planned (10b5-1)
31 Aug 2023
COLELLA GERALD G Director · indirect
Sold on a plan
$1.00M 10,000 at 100.01
10.2%
Planned (10b5-1)
3 Jul 2023
Mora Elizabeth Director
Sold on a plan
$27.12K 250 at 108.49
1.4%
Planned (10b5-1)
1 Jun 2023
Sold on a plan
$21.86K 225 at 97.16
1.9%
Planned (10b5-1)
1 Jun 2023
Mora Elizabeth Director
Sold on a plan
$19.43K 200 at 97.16
1.1%
Planned (10b5-1)
Showing 1–40 of 40.