NPK International Inc. (NPKI)
25 filings available.
1
Insider buys, 12 months
$139K by 1 insider
16
Insider sales, 12 months
$5.6M by 7 insiders
Most active NPKI insiders: Piontek Gregg and Lanigan Matthew.
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Full Timeline
Every tracked SEC filing, congressional trade, 13F/N-PORT holding change, lobbying disclosure, government contract award, SEC enforcement action, and pay-vs-performance filing for NPKI, merged into one feed.
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Who's involved
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Get the app →Recent filings
- 4 Filing: NPK International Inc.4Nov 4, 2026Filed by MINGE JOHN C
- 8-K Filing: NPK International Inc.8-KOct 30, 2026
Filers on record
MINGE JOHN CFirst tracked purchase
Warren Matthew JamesFirst tracked sale

