Over the past year there were no insider purchases at NPK International Inc.. Seven insiders sold roughly $5.6 million instead.
Keep in mind most insider selling is routine — stock-based pay has to be converted to cash at some point.
Zooming out by quarter: 5 quarters in a row of net selling by insiders. Insiders bought in 2 of the last 7 full quarters. 256 investment managers listed NPKI in their latest 13F filings (Q2 2026); more funds bought than sold.
| Filed | Insider | Role | Type | Shares | Price | Value | Source |
|---|---|---|---|---|---|---|---|
| Sep 10, 2026 | Warren Matthew James | Executive Officer | Sell | 2,991 | $13.41 | $40K | SEC |
| Aug 31, 2026 | ROBESON ROSE M | Director | Sell | 10,000 | $13.49 | $135K | SEC |
| Aug 19, 2026 | Lewis Michael A | Director | Sell | 2,013 | $14.26 | $29K | SEC |
| Jun 9, 2026 | Briggs Lori | President | Sell | 8,325 | $14.75 | $123K | SEC |
| Jun 5, 2026 | LANIGAN MATTHEW | CEO | Sell | 167,375 | $14.43 | $2.4M | SEC |
| Jun 3, 2026 | Briggs Lori | President | Sell | 10,446 | $14.58 | $152K | SEC |
| May 19, 2026 | Lewis Michael A | Director | Sell | 2,013 | $15.30 | $31K | SEC |
| Apr 10, 2026 | Piontek Gregg | CFO | Sell | 15,000 | $15.05 | $226K | SEC |
| Apr 3, 2026 | Piontek Gregg | CFO | Sell | 35,000 | $14.51 | $508K | SEC |
| Mar 26, 2026 | Piontek Gregg | CFO | Sell | 15,000 | $15.03 | $225K | SEC |
| Mar 18, 2026 | Fruge Mary Celeste | Executive Officer | Sell | 1,000 | $13.56 | $14K | SEC |
| Mar 10, 2026 | Fruge Mary Celeste | Executive Officer | Sell | 11,193 | $13.34 | $149K | SEC |
| Mar 5, 2026 | Piontek Gregg | CFO | Sell | 35,000 | $14.02 | $491K | SEC |
| Mar 5, 2026 | Piontek Gregg | CFO | Sell | 73,590 | $14.10 | $1.0M | SEC |
| Feb 25, 2026 | Lewis Michael A | Director | Sell | 2,013 | $14.31 | $29K | SEC |
In the last 12 months NPK International Inc. insiders made open-market purchases worth about $0 and sales worth about $5.6 million. Data comes from SEC Form 4 filings, updated every 30 minutes on CapitalSnitch.
The most recent open-market insider trade in NPKI was filed on 2026-09-10.
256 investment managers reported holding NPKI in SEC Form 13F filings for Q2 2026.
No congressional trades in NPKI were reported in the past two years. The full list is free on CapitalSnitch.
Public-record data for research and education, not investment advice. Insider sales are often pre-planned (10b5-1). Congress data: Data derived from public disclosures filed under the Ethics in Government Act and the STOCK Act, republished free for public transparency and news reporting. Disclosures may lag the trade by 45 days or more and show amounts only as ranges. This data may not be used for credit rating, loan underwriting, solicitation of money (political, charitable or other), direct-mail or commercial targeting (5 U.S.C. 13107).