$NPKI insider trading
Over the last 12 months, NPK International insiders reported no purchases and 14 sales totaling $5.7M across SEC Form 4 filings. 100% of those filings were made under pre-arranged 10b5-1 trading plans.
- Bought · 12m
- — 0 events
- Sold · 12m
- $5.7M 14 events
- Events · 12m
- 14 Form 4 filings, grouped
- Insiders · 12m
- 6 distinct reporters
- 10b5-1 share
- 100% of events, not dollars
All insider trades
Scroll the table sideways for price, value and marks.
| Date | Insider | Type | Shares | Avg price | Value | Δ stake | Marks |
|---|---|---|---|---|---|---|---|
| Aug 27, 2026 | ROBESON ROSE MD | ▼ Sale | 10,000 | $13.49 | $135K | -4.4% | plan |
| Aug 17, 2026 | Lewis Michael AD | ▼ Sale | 2,013 | $14.26 | $29K | -1.5% | plan |
| Jun 8, 2026 | Briggs LoriVP & President, Ind. Solutions · O | ▼ Sale | 8,325 | $14.75 | $123K | -3.3% | plan |
| Jun 3, 2026 | LANIGAN MATTHEWPresident & CEO · O·D | ▼ Sale | 167,375 | $14.43 | $2.4M | -39.7% | plan |
| Jun 2, 2026 | Briggs LoriVP & President, Ind. Solutions · O | ▼ Sale | 10,446 | $14.58 | $152K | -3.9% | plan |
| Apr 9, 2026 | Piontek GreggSenior Vice President and CFO · O | ▼ Sale | 15,000 | $15.04 | $226K | -1.8% | plan |
| Apr 1, 2026 | Piontek GreggSenior Vice President and CFO · O | ▼ Sale | 35,000 | $14.51 | $508K | -4% | plan |
| Mar 25, 2026 | Piontek GreggSenior Vice President and CFO · O | ▼ Sale | 15,000 | $15.03 | $225K | -1.7% | plan |
| Mar 16, 2026 | Fruge Mary CelesteVP, General Counsel · O | ▼ Sale | 1,000 | $13.56 | $14K | -0.4% | plan |
| Mar 6, 2026 | Fruge Mary CelesteVP, General Counsel · O | ▼ Sale | 11,193 | $13.34 | $149K | -4% | plan |
| Mar 4, 2026 | Piontek GreggSenior Vice President and CFO · O | ▼ Sale | 108,590 | $14.07 | $1.5M | -10.9% | plan · 2 tranches |
| Feb 23, 2026 | Lewis Michael AD | ▼ Sale | 2,013 | $14.31 | $29K | -1.5% | plan |
| Nov 24, 2025 | Lewis Michael AD | ▼ Sale | 2,013 | $12 | $24K | -1.5% | plan |
| Oct 1, 2025 | Briggs LoriVP & President, Ind. Solutions · O | ▼ Sale | 10,108 | $11.51 | $116K | -4% | plan |
| Sep 3, 2025 | LANIGAN MATTHEWPresident & CEO · O·D | ▼ Sale | 1,000 | $10.38 | $10K | -0.1% | plan |
| Aug 25, 2025 | Lewis Michael AD | ▼ Sale | 2,013 | $10.33 | $21K | -1.5% | plan |
| Aug 22, 2025 | LANIGAN MATTHEWPresident & CEO · O·D | ▼ Sale | 68,896 | $10.34 | $713K | -5.9% | plan |
| Aug 11, 2025 | Briggs LoriVP & President, Ind. Solutions · O | ▼ Sale | 8,005 | $9.51 | $76K | -3.1% | plan |
Every $NPKI filing on this page is one API call away
The same Form 4 data over REST or MCP, already grouped into events with the plan flag and the dollar value read. A free key does 100 calls a day and needs no card. Prefer email? NPK International filings can reach your inbox instead.
Corporate insiders — officers, directors and 10%+ owners — must report their trades to the SEC on Form 4 within two business days. This page shows open-market activity: purchases (code P), sales (S) and dispositions back to the issuer (D). Scheduled compensation events such as stock grants and option exercises are also filed on Form 4 but carry no trading signal, so they are not shown and counts here can be lower than the raw EDGAR filing total. We group each filing's transactions into one economic event (a laddered 10b5-1 sale is one event, not 25 rows), flag pre-arranged plans and late filings, and link every event to its AI-scored article in the $NPKI feed.