NPKI NPK International Inc.
NYSE · SEC CIK 71829 · EDGAR
- Bought, last 12 months
- $0 0 purchases by 0 insiders
- Sold, last 12 months
- $5.74M 16 sales by 7 insiders
- Filings on record
- 173 since 2021-07-16, latest 2026-09-24 16:11
BoughtSold
Most active insiders, 12 months
| Insider | Title | Bought | Sold |
|---|---|---|---|
| Piontek Gregg | SVP, CFO | — | $2.49M |
| LANIGAN MATTHEW | Pres, CEO, Dir | — | $2.42M |
| Briggs Lori | VP, Pres, Ind. Solutions | — | $391.4K |
| Fruge Mary Celeste | VP, GC | — | $162.9K |
| ROBESON ROSE M | Dir | — | $134.9K |
| Lewis Michael A | Dir | — | $112.5K |
| Warren Matthew James | CAO | — | $40.1K |
| Barton III Alvin James | EVP Commercial Growth, Ops | — | — |
| Pederson Kristen J. | Dir | — | — |
| Meer Claudia Michel | Dir | — | — |
Transactions 194
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-09-24 16:11 | 2026-09-22 | NPKI | Barton III Alvin James | EVP Commercial Growth, Ops | A - Grant | $0.00 | +12.8K | 12.8K | New | $0 | |
| T | 2026-09-10 18:22 | 2026-09-09 | NPKI | Warren Matthew James | CAO | S - Sale | $13.41 | -2,991 | 51.4K | -5% | -$40.1K |
| T | 2026-08-31 16:28 | 2026-08-27 | NPKI | ROBESON ROSE M | Dir | S - Sale | $13.49 | -10.0K | 215.1K | -4% | -$134.9K |
| T | 2026-08-19 16:14 | 2026-08-17 | NPKI | Lewis Michael A | Dir | S - Sale | $14.26 | -2,013 | 135.9K | -1% | -$28.7K |
| 2026-07-29 16:38 | 2026-07-28 | NPKI | Pederson Kristen J. | Dir | A - Grant | $0.00 | +6,614 | 6,614 | New | $0 | |
| T | 2026-06-09 16:20 | 2026-06-08 | NPKI | Briggs Lori | VP, Pres, Ind. Solutions | S - Sale | $14.75 | -8,325 | 247.2K | -3% | -$122.8K |
| T | 2026-06-05 16:22 | 2026-06-03 | NPKI | LANIGAN MATTHEW | Pres, CEO, Dir | S - Sale | $14.43 | -167.4K | 254.7K | -40% | -$2.42M |
| DM | 2026-06-03 18:56 | 2026-06-01 | NPKI | Fruge Mary Celeste | VP, GC | F - Tax | $14.31 | -15.8K | 267.4K | -6% | -$226.8K |
| D | 2026-06-03 18:56 | 2026-06-01 | NPKI | Fruge Mary Celeste | VP, GC | M - OptEx | $0.00 | +17.3K | 284.6K | +6% | $0 |
| DM | 2026-06-03 18:55 | 2026-06-01 | NPKI | LANIGAN MATTHEW | Pres, CEO, Dir | F - Tax | $14.31 | -89.5K | 321.9K | -22% | -$1.28M |
| D | 2026-06-03 18:55 | 2026-06-01 | NPKI | LANIGAN MATTHEW | Pres, CEO, Dir | M - OptEx | $0.00 | +100.2K | 422.1K | +31% | $0 |
| DM | 2026-06-03 18:53 | 2026-06-01 | NPKI | 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 | Piontek Gregg | SVP, CFO | M - OptEx | $0.00 | +40.4K | 858.2K | +5% | $0 |
| DMT | 2026-06-03 18:51 | 2026-06-01 | NPKI | Briggs Lori | VP, Pres, Ind. Solutions | F - Tax | $14.31 | -21.8K | 241.6K | -8% | -$311.3K |
| DT | 2026-06-03 18:51 | 2026-06-01 | NPKI | Briggs Lori | VP, Pres, Ind. Solutions | M - OptEx | $0.00 | +24.3K | 265.9K | +10% | $0 |
| DT | 2026-06-03 18:51 | 2026-06-02 | NPKI | Briggs Lori | VP, Pres, Ind. Solutions | S - Sale+OE | $14.58 | -10.4K | 255.5K | -4% | -$152.3K |
| 2026-05-21 17:20 | 2026-05-20 | NPKI | ROBESON ROSE M | Dir | A - Grant | $0.00 | +10.9K | 225.1K | +5% | $0 | |
| 2026-05-21 17:18 | 2026-05-20 | NPKI | MINGE JOHN C | Dir | A - Grant | $0.00 | +8,558 | 253.9K | +3% | $0 | |
| 2026-05-21 17:17 | 2026-05-20 | NPKI | Meer Claudia Michel | Dir | A - Grant | $0.00 | +8,558 | 126.7K | +7% | $0 | |
| 2026-05-21 17:16 | 2026-05-20 | NPKI | Lewis Michael A | Dir | A - Grant | $0.00 | +8,558 | 137.9K | +7% | $0 | |
| 2026-05-21 17:14 | 2026-05-20 | NPKI | LARSON RODERICK A. | Dir | A - Grant | $0.00 | +8,558 | 23.7K | +57% | $0 | |
| 2026-05-21 17:09 | 2026-05-20 | NPKI | CUTILLO JOSEPH A | Dir | A - Grant | $0.00 | +8,558 | 36.2K | +31% | $0 | |
| 2026-05-21 17:08 | 2026-05-19 | NPKI | Piontek Gregg | SVP, CFO | A - Grant | $0.00 | +34.6K | 853.9K | +4% | $0 | |
| 2026-05-21 17:07 | 2026-05-19 | NPKI | LANIGAN MATTHEW | Pres, CEO, Dir | A - Grant | $0.00 | +85.8K | 411.4K | +26% | $0 | |
| 2026-05-21 17:05 | 2026-05-19 | NPKI | Fruge Mary Celeste | VP, GC | A - Grant | $0.00 | +18.0K | 283.2K | +7% | $0 | |
| 2026-05-21 17:02 | 2026-05-19 | NPKI | Briggs Lori | VP, Pres, Ind. Solutions | A - Grant | $0.00 | +20.8K | 263.4K | +9% | $0 | |
| T | 2026-05-19 18:11 | 2026-05-15 | NPKI | Lewis Michael A | Dir | S - Sale | $15.30 | -2,013 | 129.3K | -2% | -$30.8K |
| T | 2026-04-10 17:51 | 2026-04-09 | NPKI | 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 | Piontek Gregg | SVP, CFO | S - Sale | $14.51 | -35.0K | 834.3K | -4% | -$507.9K |
| 2026-03-26 | 2026-03-25 | NPKI | Piontek Gregg | SVP, CFO | S - Sale | $15.03 | -15.0K | 869.3K | -2% | -$225.4K | |
| D | 2026-03-18 | 2026-03-16 | NPKI | Fruge Mary Celeste | VP, GC | M - OptEx | $4.32 | +1,000 | 266.2K | +0.4% | +$4,320 |
| D | 2026-03-18 | 2026-03-16 | NPKI | Fruge Mary Celeste | VP, GC | S - Sale+OE | $13.56 | -1,000 | 265.2K | -0.4% | -$13.6K |
| D | 2026-03-10 | 2026-03-06 | NPKI | Fruge Mary Celeste | VP, GC | S - Sale+OE | $13.34 | -11.2K | 265.2K | -4% | -$149.3K |
| D | 2026-03-10 | 2026-03-06 | NPKI | Fruge Mary Celeste | VP, GC | M - OptEx | $4.32 | +11.2K | 276.4K | +4% | +$48.4K |
| DM | 2026-03-05 | 2026-03-04 | NPKI | Piontek Gregg | SVP, CFO | S - Sale+OE | $14.07 | -108.6K | 919.3K | -11% | -$1.53M |
| D | 2026-03-05 | 2026-03-04 | NPKI | Piontek Gregg | SVP, CFO | M - OptEx | $4.32 | +73.6K | 992.9K | +8% | +$317.9K |
| 2026-02-25 | 2026-02-23 | NPKI | Lewis Michael A | Dir | S - Sale | $14.31 | -2,013 | 131.3K | -2% | -$28.8K | |
| DA | 2026-01-21 | 2025-06-01 | NPKI | Fruge Mary Celeste | VP, GC | M - OptEx | $0.00 | +17.3K | 265.2K | +7% | $0 |
| 2025-11-25 | 2025-11-24 | NPKI | Lewis Michael A | Dir | S - Sale | $12.00 | -2,013 | 133.3K | -1% | -$24.2K | |
| 2025-10-06 | 2025-10-03 | NPKI | LANIGAN MATTHEW | Pres, CEO, Dir | G - Gift | $0.00 | -770.2K | 325.7K | -70% | $0 | |
| 2025-10-03 | 2025-10-01 | NPKI | Briggs Lori | VP, Pres, Ind. Solutions | S - Sale | $11.51 | -10.1K | 242.5K | -4% | -$116.3K | |
| D | 2025-09-04 | 2025-09-03 | NPKI | LANIGAN MATTHEW | Pres, CEO, Dir | M - OptEx | $4.32 | +1,000 | 1.10M | +0.1% | +$4,320 |
| D | 2025-09-04 | 2025-09-03 | NPKI | LANIGAN MATTHEW | Pres, CEO, Dir | S - Sale+OE | $10.38 | -1,000 | 1.10M | -0.1% | -$10.4K |
| 2025-08-26 | 2025-08-25 | NPKI | Lewis Michael A | Dir | S - Sale | $10.33 | -2,013 | 135.4K | -1% | -$20.8K | |
| D | 2025-08-26 | 2025-08-22 | NPKI | LANIGAN MATTHEW | Pres, CEO, Dir | S - Sale+OE | $10.34 | -68.9K | 1.10M | -6% | -$712.4K |
| D | 2025-08-26 | 2025-08-22 | NPKI | LANIGAN MATTHEW | Pres, CEO, Dir | M - OptEx | $4.32 | +68.9K | 1.16M | +6% | +$297.6K |
| 2025-08-12 | 2025-08-11 | NPKI | Briggs Lori | VP, Pres, Ind. Solutions | S - Sale | $9.51 | -8,005 | 252.6K | -3% | -$76.1K | |
| 2025-07-10 | 2025-07-09 | NPKI | Briggs Lori | VP, Pres, Ind. Solutions | S - Sale | $8.57 | -8,005 | 260.6K | -3% | -$68.6K | |
| 2025-06-17 | 2025-06-16 | NPKI | Lewis Michael A | Dir | S - Sale | $8.60 | -2,013 | 137.4K | -1% | -$17.3K | |
| 2025-06-17 | 2025-06-14 | NPKI | WHITE DOUGLAS L | VP, CAO, Treas | A - Grant | $6.51 | +730 | 305.2K | +0.2% | +$4,752 | |
| 2025-06-10 | 2025-06-06 | NPKI | Briggs Lori | VP, Pres, Ind. Solutions | S - Sale | $8.38 | -9,704 | 268.6K | -3% | -$81.3K | |
| D | 2025-06-03 | 2025-06-01 | NPKI | Fruge Mary Celeste | VP, GC | M - OptEx | $0.00 | +17.2K | 265.2K | +7% | $0 |
| DM | 2025-06-03 | 2025-06-01 | NPKI | Fruge Mary Celeste | VP, GC | F - Tax | $8.09 | -17.4K | 251.8K | -6% | -$141.2K |
| DM | 2025-06-03 | 2025-06-01 | NPKI | WHITE DOUGLAS L | VP, CAO, Treas | M - OptEx | $0.00 | +32.0K | 320.2K | +11% | $0 |
| DM | 2025-06-03 | 2025-06-01 | NPKI | WHITE DOUGLAS L | VP, CAO, Treas | F - Tax | $8.09 | -15.7K | 317.1K | -5% | -$127.1K |
| DM | 2025-06-03 | 2025-06-01 | NPKI | Piontek Gregg | SVP, CFO | M - OptEx | $0.00 | +84.2K | 921.0K | +10% | $0 |
| DM | 2025-06-03 | 2025-06-01 | NPKI | Piontek Gregg | SVP, CFO | F - Tax | $8.09 | -42.1K | 903.8K | -4% | -$340.4K |
| DM | 2025-06-03 | 2025-06-01 | NPKI | Briggs Lori | VP, Pres, Ind. Solutions | F - Tax | $8.09 | -25.4K | 278.3K | -8% | -$205.2K |
| DM | 2025-06-03 | 2025-06-01 | NPKI | Briggs Lori | VP, Pres, Ind. Solutions | M - OptEx | $0.00 | +50.7K | 279.4K | +22% | $0 |
| DM | 2025-06-03 | 2025-06-01 | NPKI | LANIGAN MATTHEW | Pres, CEO, Dir | F - Tax | $8.09 | -104.4K | 1.18M | -8% | -$844.7K |
| DM | 2025-06-03 | 2025-06-01 | NPKI | LANIGAN MATTHEW | Pres, CEO, Dir | M - OptEx | $0.00 | +208.8K | 1.10M | +23% | $0 |
| 2025-05-20 | 2025-05-19 | NPKI | Meer Claudia Michel | Dir | P - Purchase | $7.92 | +4,000 | 118.1K | +4% | +$31.7K | |
| 2025-05-19 | 2025-05-15 | NPKI | LARSON RODERICK A. | Dir | A - Grant | $0.00 | +15.1K | 15.1K | New | $0 | |
| 2025-05-19 | 2025-05-15 | NPKI | Young Donald Win | Dir | A - Grant | $0.00 | +15.1K | 310.9K | +5% | $0 | |
| 2025-05-19 | 2025-05-15 | NPKI | ROBESON ROSE M | Dir | A - Grant | $0.00 | +18.7K | 214.3K | +10% | $0 | |
| 2025-05-19 | 2025-05-15 | NPKI | CUTILLO JOSEPH A | Dir | A - Grant | $0.00 | +15.1K | 27.6K | +121% | $0 | |
| 2025-05-19 | 2025-05-15 | NPKI | MINGE JOHN C | Dir | A - Grant | $0.00 | +15.1K | 245.4K | +7% | $0 | |
| 2025-05-19 | 2025-05-15 | NPKI | Lewis Michael A | Dir | A - Grant | $0.00 | +15.1K | 139.4K | +12% | $0 | |
| 2025-05-19 | 2025-05-15 | NPKI | Meer Claudia Michel | Dir | A - Grant | $0.00 | +15.1K | 114.1K | +15% | $0 | |
| 2025-05-16 | 2025-05-14 | NPKI | LANIGAN MATTHEW | Pres, CEO, Dir | A - Grant | $0.00 | +212.7K | 991.5K | +27% | $0 | |
| 2025-05-16 | 2025-05-14 | NPKI | Piontek Gregg | SVP, CFO | A - Grant | $0.00 | +85.7K | 877.2K | +11% | $0 | |
| 2025-05-16 | 2025-05-14 | NPKI | Fruge Mary Celeste | VP, GC | A - Grant | $0.00 | +39.8K | 265.4K | +18% | $0 | |
| 2025-05-16 | 2025-05-14 | NPKI | WHITE DOUGLAS L | VP, CAO, Treas | A - Grant | $0.00 | +29.9K | 288.2K | +12% | $0 | |
| 2025-05-16 | 2025-05-14 | NPKI | Briggs Lori | VP, Pres, Ind. Solutions | A - Grant | $0.00 | +51.7K | 253.0K | +26% | $0 | |
| 2025-05-08 | 2025-05-08 | NPKI | CUTILLO JOSEPH A | Dir | P - Purchase | $8.00 | +12.5K | 12.5K | New | +$100.0K | |
| 2025-03-06 | 2025-03-05 | NPKI | MINGE JOHN C | Dir | P - Purchase | $5.38 | +10.0K | 230.3K | +5% | +$53.8K | |
| 2024-12-17 | 2024-12-13 | NPKI | WHITE DOUGLAS L | VP, CAO, Treas | A - Grant | $6.58 | +722 | 258.3K | +0.3% | +$4,751 | |
| D | 2024-09-04 | 2024-09-01 | NPKI | LANIGAN MATTHEW | Pres, CEO, Dir | F - Tax | $8.23 | -13.1K | 778.8K | -2% | -$107.9K |
| D | 2024-09-04 | 2024-09-01 | NPKI | LANIGAN MATTHEW | Pres, CEO, Dir | M - OptEx | $0.00 | +33.3K | 791.9K | +4% | $0 |
| D | 2024-09-04 | 2024-09-01 | NPKI | Briggs Lori | VP, Pres, Ind. Solutions | F - Tax | $8.23 | -6,558 | 201.3K | -3% | -$54.0K |
| D | 2024-09-04 | 2024-09-01 | NPKI | Briggs Lori | VP, Pres, Ind. Solutions | M - OptEx | $0.00 | +16.7K | 207.9K | +9% | $0 |
| 2024-06-17 | 2024-06-14 | NPKI | Briggs Lori | VP, Pres, Ind. Solutions | A - Grant | $5.98 | +1,378 | 191.2K | +0.7% | +$8,240 | |
| 2024-06-17 | 2024-06-14 | NPKI | WHITE DOUGLAS L | VP, CAO, Treas | A - Grant | $5.98 | +841 | 257.6K | +0.3% | +$5,029 | |
| DM | 2024-06-04 | 2024-06-01 | NPKI | WHITE DOUGLAS L | VP, CAO, Treas | M - OptEx | $0.00 | +50.7K | 237.1K | +27% | $0 |
| DM | 2024-06-04 | 2024-06-01 | NPKI | WHITE DOUGLAS L | VP, CAO, Treas | F - Tax | $8.48 | -12.3K | 265.5K | -4% | -$104.6K |
| DM | 2024-06-04 | 2024-06-01 | NPKI | Piontek Gregg | SVP, CFO | F - Tax | $8.48 | -53.3K | 811.7K | -6% | -$451.6K |
| DM | 2024-06-04 | 2024-06-01 | NPKI | Piontek Gregg | SVP, CFO | M - OptEx | $0.00 | +135.4K | 760.6K | +22% | $0 |
| DM | 2024-06-04 | 2024-06-01 | NPKI | PATERSON DAVID A | VP, Pres, Fluids Systems | F - Tax | $8.48 | -24.2K | 386.2K | -6% | -$205.0K |
| DM | 2024-06-04 | 2024-06-01 | NPKI | PATERSON DAVID A | VP, Pres, Fluids Systems | M - OptEx | $0.00 | +94.6K | 351.6K | +37% | $0 |
| DM | 2024-06-04 | 2024-06-01 | NPKI | Fruge Mary Celeste | VP, GC | F - Tax | $8.48 | -19.9K | 238.7K | -8% | -$168.9K |
| D | 2024-06-04 | 2024-06-01 | NPKI | Fruge Mary Celeste | VP, GC | M - OptEx | $0.00 | +17.3K | 245.5K | +8% | $0 |
| DM | 2024-06-04 | 2024-06-01 | NPKI | Briggs Lori | VP, Pres, Ind. Solutions | M - OptEx | $0.00 | +66.7K | 191.7K | +53% | $0 |
| DM | 2024-06-04 | 2024-06-01 | NPKI | Briggs Lori | VP, Pres, Ind. Solutions | F - Tax | $8.48 | -26.3K | 189.8K | -12% | -$222.7K |
| DM | 2024-06-04 | 2024-06-01 | NPKI | LANIGAN MATTHEW | Pres, CEO, Dir | M - OptEx | $0.00 | +245.9K | 646.5K | +61% | $0 |
| DM | 2024-06-04 | 2024-06-01 | NPKI | LANIGAN MATTHEW | Pres, CEO, Dir | F - Tax | $8.48 | -96.8K | 773.2K | -11% | -$820.6K |
| 2024-05-20 | 2024-05-16 | NPKI | Young Donald Win | Dir | A - Grant | $0.00 | +16.1K | 295.8K | +6% | $0 | |
| 2024-05-20 | 2024-05-16 | NPKI | Lewis Michael A | Dir | A - Grant | $0.00 | +16.1K | 124.3K | +15% | $0 | |
| 2024-05-20 | 2024-05-16 | NPKI | LARSON RODERICK A. | Dir | A - Grant | $0.00 | +16.1K | 16.1K | New | $0 | |
| 2024-05-20 | 2024-05-16 | NPKI | Meer Claudia Michel | Dir | A - Grant | $0.00 | +16.1K | 99.0K | +19% | $0 | |
| 2024-05-20 | 2024-05-16 | NPKI | ROBESON ROSE M | Dir | A - Grant | $0.00 | +20.0K | 195.6K | +11% | $0 |
Purchase Sale Sale after option exercise All abbreviations