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NPK International Inc. insider trading

NPKINYSE
$11.79-0.04 (-0.34%)as of Oct 2, 2026

“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.” — Peter Lynch

Insider Trading vs Stock Price

Insider Trading vs Stock Price data

Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (+4.4%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
DateCategoryPersonRoleActionAmountChange in holding
Open market purchase
Open market sell
Marker size reflects transaction size.

Net dollar flow · Buy / Sell balance

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Key players

  • MLMatthew LaniganPresident & CEO1.2071%of company
  • GPGregg PiontekSenior Vice President and CFO1.0872%of company
  • DWDonald Win YoungDirector0.3662%of company
  • DLDouglas L. WhiteVP, CAO & Treasurer0.3595%of company
  • MCMary Celeste FrugeVP, General Counsel0.3352%of company
  • RARoderick A. LarsonDirector0.303%of company
  • JCJohn C. MingeDirector0.2991%of company
  • LBLori BriggsVP & President, Ind. Solutions0.2911%of company
  • RMRose M. RobesonDirector0.2534%of company
  • MAMichael A. LewisDirector0.16%of company

AI Activity Analysis

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Insider activity

Fromto
CompanyInsider / roleActionΔOwnAvg priceAmount
NPKIMatthew James WarrenChief Accounting OfficerOpen market sell$40.1K-5.5%$13.41$40.1KSep 9, 2026Sep 10, 2026
NPKIRose M. RobesonDirectorOpen market sell$135K-4.4%$13.49$135KAug 27, 2026Aug 31, 2026
NPKIMichael A. LewisDirectorOpen market sell$28.7K-1.5%$14.26$28.7KAug 17, 2026Aug 19, 2026
NPKILori BriggsVP & President, Ind. SolutionsOpen market sell$123K-3.3%$14.75$123KJun 8, 2026Jun 9, 2026
NPKIMatthew LaniganPresident & CEOOpen market sell$2.42M-14.0%$14.43$2.42MJun 3, 2026Jun 5, 2026
NPKILori BriggsVP & President, Ind. SolutionsOpen market sell$152K-3.9%$14.58$152KJun 2, 2026Jun 3, 2026
NPKIMichael A. LewisDirectorOpen market sell$30.8K-1.5%$15.30$30.8KMay 15, 2026May 19, 2026
NPKIGregg PiontekSenior Vice President and CFOOpen market sell$226K-1.7%$15.05$226KApr 9, 2026Apr 10, 2026
NPKIGregg PiontekSenior Vice President and CFOOpen market sell$508K-3.8%$14.51$508KApr 1, 2026Apr 3, 2026
NPKIGregg PiontekSenior Vice President and CFOOpen market sell$225K-1.6%$15.03$225KMar 25, 2026Mar 26, 2026
NPKIMichael A. LewisDirectorOpen market sell$28.8K-1.5%$14.31$28.8KFeb 23, 2026Feb 25, 2026
NPKIMichael A. LewisDirectorOpen market sell$24.2K-1.5%$12.00$24.2KNov 24, 2025Nov 25, 2025
End of history · 12 transactions
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