NPK International Inc. (NPKI) has 4 open-market insider trades by 4 insiders since 2025. The most active filer is Gregg Piontek, President & CFO +1.
| Name | Title | Tier | Trades | Value | Last Trade |
|---|---|---|---|---|---|
| Gregg Piontek | PresCFOVP | — | 1 | $1.5M | 2026-06-01 |
| Joseph A. Cutillo | Dir | — | 1 | $100K | 2026-05-20 |
| John C. Minge | Dir | — | 1 | $54K | 2026-05-20 |
| Claudia Michel Meer | Dir | — | 1 | $32K | 2026-05-20 |
| Insider | Title | Type | Value | Date |
|---|---|---|---|---|
| Matthew James Warren | CAO | Sell | $40K | 2026-09-09 |
| Rose M. Robeson | Director | Sell | $135K | 2026-08-27 |
| Michael A. Lewis | Director | Sell | $29K | 2026-08-17 |
| Lori Briggs | President & VP | Sell | $123K | 2026-06-08 |
| Matthew Lanigan | CEO & President | Sell | $2.4M | 2026-06-03 |
| Lori Briggs | President & VP | Sell | $152K |
Companies that share insiders with NPKI, and sector peers with recent insider buying. Related by who files, not by how the stocks move.
| 2026-06-02 |
| Michael A. Lewis | Director | Sell | $31K | 2026-05-15 |
| Gregg Piontek | President & CFO +1 | Sell | $226K | 2026-04-09 |
| Gregg Piontek | President & CFO +1 | Sell | $508K | 2026-04-01 |
| Gregg Piontek | President & CFO +1 | Sell | $451K | 2026-03-25 |
| Mary Celeste Fruge | CLO & VP | Sell | $14K | 2026-03-16 |
| Mary Celeste Fruge | VP & General Counsel | Sell | $149K | 2026-03-06 |
| Gregg Piontek | President & CFO +1 | Sell | $1.5M | 2026-03-04 |
| Michael A. Lewis | Director | Sell | $29K | 2026-02-23 |
| Michael A. Lewis | Director | Sell | $24K | 2025-11-24 |