Insider trading

Period: 120 months Stock: MMS Type of trade: Bought × + 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.

34 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.

34 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.

34 decisions over 120 months Remove this filter
The trade

Minimum amount

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

34 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.
34 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
34 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.

34 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
10 Feb 2026
Caswell Bruce CEO & President
Bought 3×
$249.08K 3,175 at 78.45
1.0%
Largest buy in 3 yrs
9 Feb 2026
Mutryn David Chief Financial Officer
Bought
$75.63K 1,000 at 75.63
2.6%
First buy on file
28 Nov 2025
RAJAN GAYATHRI Director
Bought
$3.64K 42 at 86.11
0.3%
28 Nov 2025
Bought
$1.24K 14 at 86.11
0.1%
Largest buy in 3 yrs
29 Aug 2025
RAJAN GAYATHRI Director
Bought
$3.63K 41 at 87.58
0.3%
29 Aug 2025
Bought
$1.24K 14 at 87.58
0.1%
Largest buy in 3 yrs
16 Jun 2025
RUDDY RAYMOND B Director
Bought
$99.96K 1,435 at 69.66
0.5%
30 May 2025
RAJAN GAYATHRI Director
Bought
$5.98K 83 at 72.29
0.6%
Largest buy in 3 yrs
30 May 2025
Bought
$1.23K 17 at 72.29
0.1%
Largest buy in 3 yrs
28 Feb 2025
RAJAN GAYATHRI Director
Bought
$5.42K 81 at 66.64
0.5%
Largest buy in 3 yrs
28 Feb 2025
Bought
$1.23K 18 at 66.64
0.5%
Largest buy in 3 yrs
17 Dec 2024
Caswell Bruce CEO & President
Bought
$247.24K 3,500 at 70.64
1.3%
12 Dec 2024
HALEY JOHN J Director
Bought
$250.44K 3,490 at 71.76
3.2%
12 Dec 2024
RUDDY RAYMOND B Director
Bought
$249.40K 3,490 at 71.46
3.2%
29 Nov 2024
RAJAN GAYATHRI Director
Bought
$5.40K 73 at 73.72
0.4%
Largest buy in 3 yrs
29 Nov 2024
Bought
$1.22K 17 at 73.72
0.4%
Largest buy in 3 yrs
3 Sep 2024
Bought
$1.22K 13 at 92.40
0.3%
Largest buy in 3 yrs
30 Aug 2024
RAJAN GAYATHRI Director
Bought
$5.38K 58 at 92.39
0.3%
Largest buy in 3 yrs
31 May 2024
Bought
$1.21K 14 at 84.97
0.4%
Largest buy in 3 yrs
30 May 2024
RAJAN GAYATHRI Director
Bought
$5.36K 63 at 84.97
0.4%
Largest buy in 3 yrs
29 Feb 2024
RAJAN GAYATHRI Director
Bought
$4.73K 56 at 84.06
0.4%
Largest buy in 3 yrs
29 Feb 2024
Bought
$603.48 7 at 84.05
0.2%
First buy on file
30 Nov 2023
RAJAN GAYATHRI Director
Bought
$4.72K 57 at 83.37
0.4%
Largest buy in 3 yrs
31 Aug 2023
RAJAN GAYATHRI Director
Bought
$4.39K 54 at 80.70
0.3%
Largest buy in 3 yrs
4 Aug 2023
Caswell Bruce CEO & President
Bought
$248.37K 3,141 at 79.07
1.5%
31 May 2023
RAJAN GAYATHRI Director
Bought
$4.37K 54 at 80.49
0.3%
Largest buy in 3 yrs
28 Feb 2023
RAJAN GAYATHRI Director
Bought
$3.20K 39 at 82.40
0.2%
First buy on file
7 Dec 2022
RUDDY RAYMOND B Director
Bought
$400.58K 5,730 at 69.91
5.5%
15 Jun 2022
HALEY JOHN J Director
Bought
$1.09M 18,000 at 60.32
19.6%
First buy on file
15 Jun 2022
Caswell Bruce CEO & President
Bought
$500.66K 8,300 at 60.32
4.8%
Largest buy in 3 yrs
14 Jun 2022
RUDDY RAYMOND B Director
Bought
$1.00M 17,341 at 57.72
18.9%
First buy on file
11 Aug 2021
Caswell Bruce CEO & President
Bought
$366.87K 4,500 at 81.53
3.9%
First buy on file
10 Feb 2017
Altman Anne K. Director
Bought
$151.31K 2,700 at 56.04
opened
First buy on file
11 Nov 2016
Nadeau Richard John Chief Financial Officer
Bought
$50.10K 1,000 at 50.10
10.8%
First buy on file
Showing 1–34 of 34.