NPK International Inc (NPKI) insider trading
Every open-market stock purchase and sale by NPK International Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Rose M Robeson (Director) and 2 others sold $204K in the last 90 days.
- Last insider buy: Claudia Michel Meer (Director), $31.7K, 16 months ago.
Last 12 months: insiders bought $0 (0 buys) and sold $5.6M (15 sales). Last close $11.72 on Sep 25, 2026.
Recent NPKI insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Sep 22, 2026 | Alvin James Barton III (VP) | Bought (not open market) | — |
| Sep 9, 2026 | Matthew James Warren (C-suite exec) | Sold | $40.1K |
| Aug 27, 2026 | Rose M Robeson (Director) | Sold | $135K |
| Aug 17, 2026 | Michael A Lewis (Director) | Sold | $28.7K |
| Jul 28, 2026 | Kristen J. Pederson (Director) | Bought (not open market) | — |
| Jun 8, 2026 | Lori Briggs (President) | Sold | $123K |
| Jun 3, 2026 | Matthew Lanigan (CEO) | Sold | $2.4M |
| Jun 2, 2026 | Lori Briggs (President) | Sold | $152K |
| Jun 1, 2026 | Matthew Lanigan (CEO) | Sold (not open market) | $564K |
| Jun 1, 2026 | Matthew Lanigan (CEO) | Sold (not open market) | $399K |
| Jun 1, 2026 | Matthew Lanigan (CEO) | Sold (not open market) | $318K |
| Jun 1, 2026 | Gregg Piontek (CFO) | Sold (not open market) | $227K |
| Jun 1, 2026 | Gregg Piontek (CFO) | Sold (not open market) | $161K |
| Jun 1, 2026 | Lori Briggs (President) | Sold (not open market) | $137K |
| Jun 1, 2026 | Gregg Piontek (CFO) | Sold (not open market) | $128K |
| Jun 1, 2026 | Mary Celeste Fruge (VP) | Sold (not open market) | $97.3K |
| Jun 1, 2026 | Lori Briggs (President) | Sold (not open market) | $97K |
| Jun 1, 2026 | Lori Briggs (President) | Sold (not open market) | $77.3K |
| Jun 1, 2026 | Mary Celeste Fruge (VP) | Sold (not open market) | $74.7K |
| Jun 1, 2026 | Mary Celeste Fruge (VP) | Sold (not open market) | $54.9K |
| Jun 1, 2026 | Lori Briggs (President) | Bought (not open market) | — |
| Jun 1, 2026 | Gregg Piontek (CFO) | Bought (not open market) | — |
| Jun 1, 2026 | Mary Celeste Fruge (VP) | Bought (not open market) | — |
| Jun 1, 2026 | Matthew Lanigan (CEO) | Bought (not open market) | — |
| May 20, 2026 | John C Minge (Director) | Bought (not open market) | — |
Who's trading NPKI
- Alvin James Barton III, VP: other filings, last Sep 22, 2026
- Matthew James Warren, C-suite exec: sold $40.1K (1 sale), last Sep 9, 2026
- Rose M Robeson, Director: sold $135K (1 sale), last Aug 27, 2026
- Michael A Lewis, Director: sold $112K (4 sales), last Aug 17, 2026
- Kristen J. Pederson, Director: other filings, last Jul 28, 2026
- Lori Briggs, President: sold $275K (2 sales), last Jun 8, 2026
- Matthew Lanigan, CEO: sold $2.4M (1 sale), last Jun 3, 2026
- Gregg Piontek, CFO: sold $2.5M (5 sales), last Jun 1, 2026
- Mary Celeste Fruge, VP: sold $163K (2 sales), last Jun 1, 2026
- John C Minge, Director: other filings, last May 20, 2026
- Joseph A Cutillo, Director: other filings, last May 20, 2026
- Roderick A. Larson, Director: other filings, last May 20, 2026
- Claudia Michel Meer, Director: other filings, last May 20, 2026
Get free alerts when an insider at NPK International Inc files a new trade →