Piontek Gregg
SEC CIK 1418328 · EDGAR
BoughtSold
Companies
| Ticker | Company | Title | Holding | Bought | Sold | Trades | First | Last |
|---|---|---|---|---|---|---|---|---|
| NPKI | NPK International Inc. | SVP, CFO | 817.8K | $25.5K | $2.49M | 19 | 2022-06-01 | 2026-06-01 |
Most active insiders at NPKI, 12 months
| # | Insider | Title | Bought | Sold |
|---|---|---|---|---|
| 1 | Piontek Gregg | SVP, CFO | — | $2.49M |
| 2 | LANIGAN MATTHEW | Pres, CEO, Dir | — | $2.42M |
| 3 | Briggs Lori | VP, Pres, Ind. Solutions | — | $391.4K |
| 4 | Fruge Mary Celeste | VP, GC | — | $162.9K |
| 5 | ROBESON ROSE M | Dir | — | $134.9K |
| 6 | Lewis Michael A | Dir | — | $112.5K |
| 7 | Warren Matthew James | CAO | — | $40.1K |
| 8 | Barton III Alvin James | EVP Commercial Growth, Ops | — | — |
| 9 | Pederson Kristen J. | Dir | — | — |
| 10 | Meer Claudia Michel | Dir | — | — |
Transactions 19
| X | Filed | Traded | Ticker | Company | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-06-03 18:53 | 2026-06-01 | NPKI | NPK International Inc. | Piontek Gregg | SVP, CFO | F - Tax | $14.31 | -36.1K | 817.8K | -4% | -$516.4K |
| D | 2026-06-03 18:53 | 2026-06-01 | NPKI | NPK International Inc. | Piontek Gregg | SVP, CFO | M - OptEx | $0.00 | +40.4K | 858.2K | +5% | $0 |
| 2026-05-21 17:08 | 2026-05-19 | NPKI | NPK International Inc. | Piontek Gregg | SVP, CFO | A - Grant | $0.00 | +34.6K | 853.9K | +4% | $0 | |
| T | 2026-04-10 17:51 | 2026-04-09 | NPKI | NPK International Inc. | Piontek Gregg | SVP, CFO | S - Sale | $15.04 | -15.0K | 819.3K | -2% | -$225.7K |
| T | 2026-04-03 13:00 | 2026-04-01 | NPKI | NPK International Inc. | Piontek Gregg | SVP, CFO | S - Sale | $14.51 | -35.0K | 834.3K | -4% | -$507.9K |
| 2026-03-26 | 2026-03-25 | NPKI | NPK International Inc. | Piontek Gregg | SVP, CFO | S - Sale | $15.03 | -15.0K | 869.3K | -2% | -$225.4K | |
| DM | 2026-03-05 | 2026-03-04 | NPKI | NPK International Inc. | Piontek Gregg | SVP, CFO | S - Sale+OE | $14.07 | -108.6K | 919.3K | -11% | -$1.53M |
| D | 2026-03-05 | 2026-03-04 | NPKI | NPK International Inc. | Piontek Gregg | SVP, CFO | M - OptEx | $4.32 | +73.6K | 992.9K | +8% | +$317.9K |
| DM | 2025-06-03 | 2025-06-01 | NPKI | NPK International Inc. | Piontek Gregg | SVP, CFO | M - OptEx | $0.00 | +84.2K | 921.0K | +10% | $0 |
| DM | 2025-06-03 | 2025-06-01 | NPKI | NPK International Inc. | Piontek Gregg | SVP, CFO | F - Tax | $8.09 | -42.1K | 903.8K | -4% | -$340.4K |
| 2025-05-16 | 2025-05-14 | NPKI | NPK International Inc. | Piontek Gregg | SVP, CFO | A - Grant | $0.00 | +85.7K | 877.2K | +11% | $0 | |
| DM | 2024-06-04 | 2024-06-01 | NPKI | NPK International Inc. | Piontek Gregg | SVP, CFO | F - Tax | $8.48 | -53.3K | 811.7K | -6% | -$451.6K |
| DM | 2024-06-04 | 2024-06-01 | NPKI | NPK International Inc. | Piontek Gregg | SVP, CFO | M - OptEx | $0.00 | +135.4K | 760.6K | +22% | $0 |
| 2024-05-17 | 2024-05-15 | NPKI | NPK International Inc. | Piontek Gregg | SVP, CFO | A - Grant | $0.00 | +68.3K | 709.4K | +11% | $0 | |
| DM | 2023-06-05 | 2023-06-01+ | NPKI | NPK International Inc. | Piontek Gregg | SVP, CFO | M - OptEx | $0.00 | +142.4K | 602.4K | +31% | $0 |
| DM | 2023-06-05 | 2023-06-01 | NPKI | NPK International Inc. | Piontek Gregg | SVP, CFO | F - Tax | $3.67 | -23.1K | 555.0K | -4% | -$84.9K |
| I | 2022-08-09 | 2022-08-05 | NPKI | NPK International Inc. | Piontek Gregg | SVP, CFO | P - Purchase | $2.55 | +10.0K | 65.0K | +18% | +$25.5K |
| DM | 2022-06-03 | 2022-06-01 | NPKI | NPK International Inc. | Piontek Gregg | SVP, CFO | M - OptEx | $0.00 | +171.7K | 471.1K | +57% | $0 |
| DM | 2022-06-03 | 2022-06-01 | NPKI | NPK International Inc. | Piontek Gregg | SVP, CFO | F - Tax | $4.48 | -67.6K | 462.0K | -13% | -$302.7K |
Purchase Sale Sale after option exercise All abbreviations