Insider trading

Period: 120 months Stock: MTRN Role: Other officers × + 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.

68 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.

68 decisions over 120 months Remove this filter
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.

68 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.

68 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.
68 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
68 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.

68 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
3 Mar 2026
Chemnitz Gregory R. VP General Counsel & Secretary
Sold at will 2×
$710.62K 4,517 at 157.32
43.2%
Not planned
3 Mar 2026
Fashinpaur Melissa A Chief Accounting Officer
Sold at will
$49.44K 309 at 160.00
49.9%
Not planned
17 Feb 2026
Chemnitz Gregory R. VP General Counsel & Secretary
Sold at will
$628.36K 4,000 at 157.09
31.8%
Not planned
4 Nov 2025
Chemnitz Gregory R. VP General Counsel & Secretary
Sold at will
$97.83K 864 at 113.23
7.7%
Not planned
4 Aug 2025
Chemnitz Gregory R. VP General Counsel & Secretary
Sold at will 2×
$315.51K 3,000 at 105.17
22.4%
Not planned
4 Aug 2025
Fashinpaur Melissa A Chief Accounting Officer
Sold at will
$120.09K 1,140 at 105.34
100%
Sold half or more
5 May 2025
Chemnitz Gregory R. VP General Counsel & Secretary
Sold at will 4×
$160.89K 2,000 at 80.45
13.0%
Not planned
7 Nov 2024
Chemnitz Gregory R. VP General Counsel & Secretary
Sold at will 2×
$235.13K 2,000 at 117.57
14.3%
Not planned
4 Nov 2024
Chemnitz Gregory R. VP General Counsel & Secretary
Sold at will
$210.20K 2,000 at 105.10
12.5%
Not planned
8 Aug 2024
Chemnitz Gregory R. VP General Counsel & Secretary
Sold at will
$225.74K 2,000 at 112.87
11.1%
Not planned
13 May 2024
Chemnitz Gregory R. VP General Counsel & Secretary
Sold at will 3×
$226.62K 2,000 at 113.31
10.0%
Not planned
20 Feb 2024
Chemnitz Gregory R. VP General Counsel & Secretary
Sold at will 4×
$401.22K 3,000 at 133.74
17.1%
Not planned
29 Aug 2023
Chemnitz Gregory R. VP General Counsel & Secretary
Sold at will 2×
$159.64K 1,480 at 107.86
7.8%
Not planned
28 Aug 2023
Chemnitz Gregory R. VP General Counsel & Secretary
Sold at will
$34.27K 320 at 107.11
1.7%
Not planned
17 May 2023
Chemnitz Gregory R. VP General Counsel & Secretary
Sold at will
$242.68K 2,378 at 102.05
11.0%
Not planned
27 Feb 2023
Chemnitz Gregory R. VP General Counsel & Secretary
Sold, plan not stated
$63.47K 577 at 110.00
3.0%
23 Feb 2023
Chemnitz Gregory R. VP General Counsel & Secretary
Sold, plan not stated
$266.53K 2,423 at 110.00
11.1%
19 Aug 2022
Chemnitz Gregory R. VP General Counsel & Secretary
Sold, plan not stated 2×
$276.32K 2,868 at 96.35
14.3%
13 May 2022
Chemnitz Gregory R. VP General Counsel & Secretary
Sold, plan not stated
$376.00K 4,700 at 80.00
21.5%
22 Feb 2021
Chemnitz Gregory R. VP General Counsel & Secretary
Sold, plan not stated
$448.90K 6,700 at 67.00
33.1%
13 Aug 2020
Chemnitz Gregory R. VP General Counsel & Secretary
Sold, plan not stated
$77.19K 1,287 at 59.98
7.7%
10 Aug 2020
Chemnitz Gregory R. VP General Counsel & Secretary
Sold, plan not stated
$241.72K 4,000 at 60.43
20.5%
22 Feb 2019
Chemnitz Gregory R. VP General Counsel & Secretary
Sold, plan not stated
$126.48K 2,174 at 58.18
28.2%
21 Feb 2019
Chemnitz Gregory R. VP General Counsel & Secretary
Sold, plan not stated 2×
$172.70K 3,000 at 57.57
35.2%
1 Nov 2018
Chemnitz Gregory R. VP General Counsel & Secretary
Sold, plan not stated
$230.00K 4,000 at 57.50
31.9%
3 Aug 2018
Chemnitz Gregory R. VP General Counsel & Secretary
Sold, plan not stated
$126.62K 2,000 at 63.31
13.8%
4 May 2018
Chemnitz Gregory R. VP General Counsel & Secretary
Sold, plan not stated
$260.10K 5,000 at 52.02
28.4%
2 Nov 2017
Chemnitz Gregory R. VP General Counsel & Secretary
Sold, plan not stated
$200.64K 4,000 at 50.16
19.8%
1 Nov 2017
Chemnitz Gregory R. VP General Counsel & Secretary
Sold, plan not stated
$153.87K 3,000 at 51.29
18.5%
30 Oct 2017
Chemnitz Gregory R. VP General Counsel & Secretary
Sold, plan not stated
$148.79K 3,000 at 49.60
18.7%
31 Jul 2017
Chemnitz Gregory R. VP General Counsel & Secretary
Sold, plan not stated 2×
$114.86K 3,000 at 38.29
16.0%
28 Jun 2017
Hipple Richard J Executive Chairman
Sold, plan not stated
$93.45K 2,500 at 37.38
4.2%
27 Jun 2017
Hipple Richard J Executive Chairman
Sold, plan not stated
$92.73K 2,500 at 37.09
4.0%
26 Jun 2017
Hipple Richard J Executive Chairman
Sold, plan not stated
$92.53K 2,500 at 37.01
3.9%
23 Jun 2017
Hipple Richard J Executive Chairman
Sold, plan not stated
$93.55K 2,500 at 37.42
3.7%
22 Jun 2017
Hipple Richard J Executive Chairman
Sold, plan not stated
$92.55K 2,500 at 37.02
3.6%
21 Jun 2017
Hipple Richard J Executive Chairman
Sold, plan not stated
$92.90K 2,500 at 37.16
3.5%
20 Jun 2017
Hipple Richard J Executive Chairman
Sold, plan not stated
$92.08K 2,500 at 36.83
3.4%
19 Jun 2017
Hipple Richard J Executive Chairman
Sold, plan not stated
$91.93K 2,500 at 36.77
3.2%
16 Jun 2017
Hipple Richard J Executive Chairman
Sold, plan not stated
$90.43K 2,500 at 36.17
3.1%
15 Jun 2017
Hipple Richard J Executive Chairman
Sold, plan not stated
$90.10K 2,500 at 36.04
3.0%
14 Jun 2017
Hipple Richard J Executive Chairman
Sold, plan not stated
$90.48K 2,500 at 36.19
3.0%
13 Jun 2017
Hipple Richard J Executive Chairman
Sold, plan not stated
$90.65K 2,500 at 36.26
2.9%
12 Jun 2017
Hipple Richard J Executive Chairman
Sold, plan not stated
$93.48K 2,500 at 37.39
2.8%
9 Jun 2017
Hipple Richard J Executive Chairman
Sold, plan not stated
$90.93K 2,500 at 36.37
2.7%
8 Jun 2017
Hipple Richard J Executive Chairman
Sold, plan not stated
$88.78K 2,500 at 35.51
2.6%
7 Jun 2017
Hipple Richard J Executive Chairman
Sold, plan not stated
$87.33K 2,500 at 34.93
2.6%
6 Jun 2017
Hipple Richard J Executive Chairman
Sold, plan not stated
$86.75K 2,500 at 34.70
2.5%
5 Jun 2017
Hipple Richard J Executive Chairman
Sold, plan not stated
$86.65K 2,500 at 34.66
2.4%
2 Jun 2017
Hipple Richard J Executive Chairman
Sold, plan not stated
$86.60K 2,500 at 34.64
2.4%
Showing 1–50 of 68. Page 1 of 2 Older →