Insider trading

Period: 120 months Stock: NPKI + 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.

88 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.

88 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.

88 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.

88 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.
88 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
88 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.

88 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
9 Sep 2026
Warren Matthew James Chief Accounting Officer
Sold on a plan
$40.11K 2,991 at 13.41
5.5%
Planned (10b5-1)
27 Aug 2026
ROBESON ROSE M Director
Sold on a plan
$134.92K 10,000 at 13.49
4.4%
Planned (10b5-1)
17 Aug 2026
Lewis Michael A Director
Sold on a plan
$28.71K 2,013 at 14.26
1.5%
Planned (10b5-1)
8 Jun 2026
Briggs Lori VP & President, Ind. Solutions
Sold on a plan
$122.79K 8,325 at 14.75
3.3%
Planned (10b5-1)
3 Jun 2026
LANIGAN MATTHEW President & CEO
Sold on a plan
$2.42M 167,375 at 14.43
39.7%
Planned (10b5-1)
2 Jun 2026
Briggs Lori VP & President, Ind. Solutions
Sold on a plan
$152.28K 10,446 at 14.58
3.9%
Planned (10b5-1)
15 May 2026
Lewis Michael A Director
Sold on a plan
$30.80K 2,013 at 15.30
1.5%
Planned (10b5-1)
9 Apr 2026
Piontek Gregg Senior Vice President and CFO
Sold on a plan
$225.68K 15,000 at 15.05
1.8%
Planned (10b5-1)
1 Apr 2026
Piontek Gregg Senior Vice President and CFO
Sold on a plan
$507.86K 35,000 at 14.51
4.0%
Planned (10b5-1)
25 Mar 2026
Piontek Gregg Senior Vice President and CFO
Sold on a plan
$225.38K 15,000 at 15.03
1.7%
Planned (10b5-1)
16 Mar 2026
Fruge Mary Celeste VP, General Counsel
Sold on a plan
$13.56K 1,000 at 13.56
0.4%
Planned (10b5-1)
6 Mar 2026
Fruge Mary Celeste VP, General Counsel
Sold on a plan
$149.30K 11,193 at 13.34
4.0%
Planned (10b5-1)
4 Mar 2026
Piontek Gregg Senior Vice President and CFO
Sold on a plan 2×
$1.53M 108,590 at 14.07
10.9%
Planned (10b5-1)
23 Feb 2026
Lewis Michael A Director
Sold on a plan
$28.80K 2,013 at 14.31
1.5%
Planned (10b5-1)
24 Nov 2025
Lewis Michael A Director
Sold on a plan
$24.16K 2,013 at 12.00
1.5%
Planned (10b5-1)
1 Oct 2025
Briggs Lori VP & President, Ind. Solutions
Sold on a plan
$116.35K 10,108 at 11.51
4.0%
Planned (10b5-1)
3 Sep 2025
LANIGAN MATTHEW President & CEO
Sold on a plan
$10.38K 1,000 at 10.38
0.1%
Planned (10b5-1)
25 Aug 2025
Lewis Michael A Director
Sold on a plan
$20.80K 2,013 at 10.33
1.5%
Planned (10b5-1)
22 Aug 2025
LANIGAN MATTHEW President & CEO
Sold on a plan
$712.54K 68,896 at 10.34
5.9%
Planned (10b5-1)
11 Aug 2025
Briggs Lori VP & President, Ind. Solutions
Sold on a plan
$76.15K 8,005 at 9.51
3.1%
Planned (10b5-1)
9 Jul 2025
Briggs Lori VP & President, Ind. Solutions
Sold on a plan
$68.58K 8,005 at 8.57
3.0%
Planned (10b5-1)
16 Jun 2025
Lewis Michael A Director
Sold on a plan
$17.32K 2,013 at 8.60
1.4%
Planned (10b5-1)
6 Jun 2025
Briggs Lori VP & President, Ind. Solutions
Sold on a plan
$81.32K 9,704 at 8.38
3.5%
Planned (10b5-1)
19 May 2025
Bought
$31.68K 4,000 at 7.92
3.5%
8 May 2025
CUTILLO JOSEPH A Director
Bought
$100.00K 12,500 at 8.00
opened
First buy on file
5 Mar 2025
MINGE JOHN C Director
Bought
$53.80K 10,000 at 5.38
4.5%
Largest buy in 3 yrs
21 Aug 2023
Bought
$7.24K 1,300 at 5.57
1.6%
16 Aug 2023
Bought
$42.18K 8,000 at 5.27
10.9%
Largest buy in 3 yrs
15 Mar 2023
MINGE JOHN C Director
Bought 2×
$40.25K 10,000 at 4.03
6.2%
Largest buy in 3 yrs
9 Dec 2022
Lewis Michael A Director
Bought
$20.90K 5,251 at 3.98
7.4%
First buy on file
21 Nov 2022
Young Donald Win Director
Bought
$118.31K 30,000 at 3.94
13.8%
21 Nov 2022
MINGE JOHN C Director
Bought
$18.20K 5,000 at 3.64
3.2%
18 Nov 2022
Bought
$15.80K 4,000 at 3.95
10.7%
Largest buy in 3 yrs
16 Nov 2022
Bought
$3.98K 1,000 at 3.98
2.7%
First buy on file
10 Nov 2022
MINGE JOHN C Director
Bought
$19.74K 5,000 at 3.95
3.3%
18 Aug 2022
Young Donald Win Director
Bought
$11.05K 3,800 at 2.91
1.8%
17 Aug 2022
Young Donald Win Director
Bought
$107.53K 40,400 at 2.66
23.3%
+23% of stake
16 Aug 2022
Young Donald Win Director
Bought
$90.55K 33,828 at 2.68
24.2%
+24% of stake
16 Aug 2022
MINGE JOHN C Director
Bought
$39.85K 15,000 at 2.66
10.9%
First buy on file
15 Aug 2022
Young Donald Win Director
Bought
$41.37K 15,375 at 2.69
12.4%
5 Aug 2022
LANIGAN MATTHEW President & CEO
Bought
$48.43K 19,000 at 2.55
7.4%
First buy on file
5 Aug 2022
Earle Edward Chipman VP, General Counsel, CAO
Bought
$25.61K 10,000 at 2.56
4.6%
First buy on file
5 Aug 2022
Piontek Gregg Senior Vice President and CFO · indirect
Bought
$25.49K 10,000 at 2.55
18.2%
Largest buy in 3 yrs
12 May 2022
Young Donald Win Director
Bought
$68.16K 19,252 at 3.54
28.1%
+28% of stake
9 May 2022
Young Donald Win Director
Bought
$145.02K 42,000 at 3.45
159%
Largest buy in 3 yrs
6 May 2022
Young Donald Win Director
Bought
$98.06K 26,450 at 3.71
opened
First buy on file
26 Aug 2021
Howes Paul L President & CEO
Bought
$68.72K 30,000 at 2.29
2.5%
Largest buy in 3 yrs
16 Nov 2020
Howes Paul L President and CEO
Bought 2×
$57.86K 45,000 at 1.29
4.5%
Largest buy in 3 yrs
13 Nov 2020
Howes Paul L President and CEO
Bought
$14.37K 12,500 at 1.15
1.3%
First buy on file
11 Nov 2020
Piontek Gregg Senior Vice President and CFO · indirect
Bought
$16.20K 15,000 at 1.08
37.5%
First buy on file
Showing 1–50 of 88. Page 1 of 2 Older →