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NPKINYSE

NPK International Inc.

Alert me on NPKI
0
Insider buys, 6 months
0
Congress trades, 6 months
0
Signals, 6 months

Six months

NPKI stock chart by TradingView

After each filing

17
Sep 11 Sale Warren Matthew James Insider
1 week
−4.0%S&P −0.1%
1 month
−15.1%S&P +2.1%
3 months
Result in33 trading days
6 months
Result in96 trading days
Sep 1 Sale ROBESON ROSE M Insider
1 week
+2.0%S&P +0.1%
1 month
−10.6%S&P +0.5%
3 months
Result in26 trading days
6 months
Result in89 trading days
Aug 20 Sale Lewis Michael A Insider
1 week
−1.8%S&P +1.1%
1 month
−9.6%S&P +1.7%
3 months
Result in18 trading days
6 months
Result in81 trading days
Jun 10 Sale Briggs Lori Insider
1 week
+3.5%S&P +2.1%
1 month
−1.8%S&P +3.5%
3 months
−9.7%S&P +4.7%
6 months
Result in32 trading days
Jun 6 Sale LANIGAN MATTHEW Insider
1 week
−0.7%S&P +2.1%
1 month
−3.0%S&P +1.9%
3 months
−9.3%S&P +3.9%
6 months
Result in30 trading days
Show all 17
Jun 4 Sale Briggs Lori Insider
1 week
+0.2%S&P −2.6%
1 month
−6.2%S&P −1.0%
3 months
−10.3%S&P +2.4%
6 months
Result in28 trading days
May 20 Sale Lewis Michael A Insider
1 week
−2.9%S&P +1.8%
1 month
−1.3%S&P +0.7%
3 months
−11.1%S&P +3.1%
6 months
Result in18 trading days
Apr 11 Sale Piontek Gregg Insider
1 week
−4.7%S&P +3.3%
1 month
+0.5%S&P +7.6%
3 months
−3.4%S&P +9.9%
6 months
−25.0%S&P +14.0%
Apr 3 Sale Piontek Gregg Insider
1 week
+4.2%S&P +4.1%
1 month
+9.5%S&P +9.8%
3 months
−4.8%S&P +13.8%
6 months
−18.0%S&P +18.2%
Mar 27 Sale Piontek Gregg Insider
1 week
−1.4%S&P +3.9%
1 month
+7.9%S&P +12.2%
3 months
+8.6%S&P +17.2%
6 months
−20.7%S&P +21.3%
Mar 19 Sale Fruge Mary Celeste Insider
1 week
+2.6%S&P −2.0%
1 month
+1.8%S&P +7.7%
3 months
+13.1%S&P +13.8%
6 months
−9.5%S&P +16.3%
Mar 11 Sale Fruge Mary Celeste Insider
1 week
+1.8%S&P −2.2%
1 month
+10.2%S&P +0.7%
3 months
+7.0%S&P +7.6%
6 months
−3.3%S&P +12.6%
Mar 6 Sale Piontek Gregg Insider
1 week
−1.5%S&P −1.5%
1 month
+5.7%S&P −1.7%
3 months
+5.3%S&P +10.0%
6 months
−2.5%S&P +15.2%
Feb 26 Sale Lewis Michael A Insider
1 week
−7.2%S&P −1.2%
1 month
−1.9%S&P −7.8%
3 months
+1.2%S&P +9.8%
6 months
−9.0%S&P +12.5%
Nov 26, 2025 Sale Lewis Michael A Insider
1 week
+6.5%S&P +0.7%
1 month
−0.4%S&P +1.5%
3 months
+15.8%S&P +1.3%
6 months
+17.8%S&P +12.2%
Oct 4, 2025 Sale Briggs Lori Insider
1 week
−0.7%S&P −1.3%
1 month
+12.4%S&P +0.5%
3 months
+11.8%S&P +3.3%
6 months
+33.4%S&P +1.2%
Sep 5, 2025 Sale LANIGAN MATTHEW Insider
1 week
+0.3%S&P +1.6%
1 month
+6.1%S&P +4.1%
3 months
+23.2%S&P +6.0%
6 months
+32.2%S&P +5.4%

Every purchase and sale on this ticker reported by a member of Congress or an insider, measured from the close of the first trading day after it became public to the close 1 week, 1 month, 3 months and 6 months later, each beside the S&P over the same days.

Filings for NPKI

51 held · newest 551 held · newest 2
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See all 51 filings for NPKI

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New sources, new features and offers like our founding price. A few times a month at most. Stop any time.

Government contracts, last 12 months

Awards of $10M and up, from USAspending · context, not a signal
No contracts of $10M or more in the last 12 months.

Lobbying

Last four quarters
No lobbying reports on file.