Lewis Michael A
SEC CIK 1423238 · EDGAR
BoughtSold
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 20
| X | Filed | Traded | Ticker | Company | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T | 2026-08-19 16:14 | 2026-08-17 | NPKI | NPK International Inc. | Lewis Michael A | Dir | S - Sale | $14.26 | -2,013 | 135.9K | -1% | -$28.7K |
| T | 2026-07-28 18:42 | 2026-07-24 | POR | PORTLAND GENERAL ELECTRIC CO /OR/ | Lewis Michael A | Dir | A - Grant | $52.05 | +3,073 | 16.6K | +23% | +$159.9K |
| T | 2026-07-28 18:42 | 2026-07-27 | POR | PORTLAND GENERAL ELECTRIC CO /OR/ | Lewis Michael A | Dir | S - Sale | $51.83 | -1,537 | 15.0K | -9% | -$79.7K |
| 2026-05-21 17:16 | 2026-05-20 | NPKI | NPK International Inc. | Lewis Michael A | Dir | A - Grant | $0.00 | +8,558 | 137.9K | +7% | $0 | |
| T | 2026-05-19 18:11 | 2026-05-15 | NPKI | NPK International Inc. | Lewis Michael A | Dir | S - Sale | $15.30 | -2,013 | 129.3K | -2% | -$30.8K |
| 2026-02-25 | 2026-02-23 | NPKI | NPK International Inc. | Lewis Michael A | Dir | S - Sale | $14.31 | -2,013 | 131.3K | -2% | -$28.8K | |
| 2025-11-25 | 2025-11-24 | NPKI | NPK International Inc. | Lewis Michael A | Dir | S - Sale | $12.00 | -2,013 | 133.3K | -1% | -$24.2K | |
| 2025-08-26 | 2025-08-25 | NPKI | NPK International Inc. | Lewis Michael A | Dir | S - Sale | $10.33 | -2,013 | 135.4K | -1% | -$20.8K | |
| 2025-07-22 | 2025-07-21 | POR | PORTLAND GENERAL ELECTRIC CO /OR/ | Lewis Michael A | Dir | S - Sale | $40.10 | -1,937 | 13.5K | -13% | -$77.7K | |
| 2025-07-21 | 2025-07-18 | POR | PORTLAND GENERAL ELECTRIC CO /OR/ | Lewis Michael A | Dir | A - Grant | $40.02 | +3,873 | 15.4K | +33% | +$155.0K | |
| 2025-06-17 | 2025-06-16 | NPKI | NPK International Inc. | Lewis Michael A | Dir | S - Sale | $8.60 | -2,013 | 137.4K | -1% | -$17.3K | |
| 2025-05-19 | 2025-05-15 | NPKI | NPK International Inc. | Lewis Michael A | Dir | A - Grant | $0.00 | +15.1K | 139.4K | +12% | $0 | |
| 2024-07-22 | 2024-07-19 | POR | PORTLAND GENERAL ELECTRIC CO /OR/ | Lewis Michael A | Dir | A - Grant | $46.35 | +3,128 | 11.6K | +37% | +$145.0K | |
| 2024-05-20 | 2024-05-16 | NPKI | NPK International Inc. | Lewis Michael A | Dir | A - Grant | $0.00 | +16.1K | 124.3K | +15% | $0 | |
| 2023-07-21 | 2023-07-21 | POR | PORTLAND GENERAL ELECTRIC CO /OR/ | Lewis Michael A | Dir | A - Grant | $0.00 | +2,949 | 8,445 | +54% | $0 | |
| A | 2023-05-25 | 2023-05-18 | NPKI | NPK International Inc. | Lewis Michael A | Dir | A - Grant | $0.00 | +32.1K | 108.2K | +42% | $0 |
| 2023-05-22 | 2023-05-18 | NPKI | NPK International Inc. | Lewis Michael A | Dir | A - Grant | $0.00 | +38.6K | 114.6K | +51% | $0 | |
| 2022-12-12 | 2022-12-09 | NPKI | NPK International Inc. | Lewis Michael A | Dir | P - Purchase | $3.98 | +5,251 | 76.0K | +7% | +$20.9K | |
| 2022-07-22 | 2022-07-21 | POR | PORTLAND GENERAL ELECTRIC CO /OR/ | Lewis Michael A | Dir | A - Grant | $0.00 | +2,596 | 5,496 | +90% | $0 | |
| 2022-05-20 | 2022-05-19 | NPKI | NPK International Inc. | Lewis Michael A | Dir | A - Grant | $0.00 | +36.5K | 70.8K | +106% | $0 |
Purchase Sale Sale after option exercise All abbreviations