NPK International (NPKI) stock: insider trades, news & valuation
Heavy sellingShare price and insider trades
NPK International insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 7 sold $5.6M of NPKI stock on the open market.
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NPKI insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | $204K | 3 |
| Q2 2026 | — | 0 | $3.5M | 6 |
| Q1 2026 | — | 0 | $1.9M | 6 |
| Q4 2025 | — | 0 | $140K | 2 |
Valuation, profit and volume
Summary
Over the past 12 months, 0 NPK International Inc. insiders reported open-market purchases totaling $0, while 7 insiders reported sales totaling $5.6M. 17 of 17 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Sep 10SEC | Matthew James WarrenChief Accounting Officer | Sell Plan | 2,99151,439 held (−5%) | $13.41 | $40K | -15.4% | — |
| Aug 31SEC | Rose M RobesonDirector | Sell Plan | 10,000215,147 held (−4%) | $13.49 | $135K | -15.9% | — |
| Aug 19SEC | Michael A LewisDirector | Sell Plan | 2,013135,865 held (−1%) | $14.26 | $29K | -20.5% | — |
| Jun 9SEC | Lori BriggsPresident | Sell Plan | 8,325247,165 held (−3%) | $14.75 | $123K | -23.1% | — |
| Jun 5SEC | Matthew LaniganCEO, President | Sell Plan | 167,375254,699 held (−40%) | $14.43 | $2.4M | -21.4% | — |
| Jun 3SEC | Lori BriggsPresident | Sell Plan | 10,446255,490 held (−4%) | $14.58 | $152K | -22.2% | — |
| May 19SEC | Michael A LewisDirector | Sell Plan | 2,013129,320 held (−2%) | $15.30 | $31K | -25.9% | — |
| Apr 10SEC | Gregg PiontekCFO, President | Sell Plan | 15,000819,326 held (−2%) | $15.05 | $226K | -24.7% | — |
| Apr 3SEC | Gregg PiontekCFO, President | Sell Plan | 35,000834,326 held (−4%) | $14.51 | $508K | -21.8% | — |
| Mar 26SEC | Gregg PiontekCFO, President | Sell Plan | 15,000869,326 held (−2%) | $15.03 | $225K | -24.6% | — |
| Mar 18SEC | Mary Celeste FrugeGeneral Counsel | Sell Plan | 1,000265,213 held (−0%) | $13.56 | $14K | -16.4% | — |
| Mar 10SEC | Mary Celeste FrugeGeneral Counsel | Sell Plan | 11,193265,213 held (−4%) | $13.34 | $149K | -15.0% | — |
| Mar 5SEC | Gregg PiontekCFO, President | Sell Plan | 73,590919,326 held (−7%) | $14.10 | $1.0M | -19.6% | — |
| Mar 5SEC | Gregg PiontekCFO, President | Sell Plan | 35,000884,326 held (−4%) | $14.02 | $491K | -19.1% | — |
| Feb 25SEC | Michael A LewisDirector | Sell Plan | 2,013131,333 held (−2%) | $14.31 | $29K | -20.8% | — |
| Nov 25SEC | Michael A LewisDirector | Sell Plan | 2,013133,346 held (−1%) | $12.00 | $24K | -5.5% | — |
| Oct 3SEC | Lori BriggsPresident | Sell Plan | 10,108242,513 held (−4%) | $11.51 | $116K | -1.5% | — |
Insiders at NPK International Inc.
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Gregg PiontekCFO, President | — | $2.5M | Apr 10, 2026 | — |
| Matthew LaniganCEO, President | — | $2.4M | Jun 5, 2026 | — |
| Lori BriggsPresident | — | $391K | Jun 9, 2026 | — |
| Mary Celeste FrugeGeneral Counsel | — | $163K | Mar 18, 2026 | — |
| Rose M RobesonDirector | — | $135K | Aug 31, 2026 | — |
| Michael A LewisDirector | — | $112K | Aug 19, 2026 | — |
| Matthew James WarrenChief Accounting Officer | — | $40K | Sep 10, 2026 | — |
NPKI stock: common questions
Are NPK International Inc. insiders buying NPKI stock?
In the past 12 months, 0 insiders reported open-market purchases of NPKI worth $0.
Are NPK International Inc. insiders selling NPKI stock?
7 insiders reported sales worth $5.6M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is NPKI's 52-week range?
Over the past year NPKI has traded between $10.74 and $16.35. It last closed at $11.34 on Oct 9, 2026.