Form 4 for NPKI NPK International Inc.
Accepted 2026-06-03 18:53:29 ET · period of report 2026-06-01 · accession 0001418328-26-000012 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| D | 2026-06-03 18:53 | 2026-06-01 | NPKI | Piontek Gregg | SVP, CFO | M - OptEx | $0.00 | -40.4K | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-06-01 | F | D | 8,959 | $14.31 | 844,933 | D | — | — | (F1) Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted stock units. |
| 2 | Common | Common Stock | 2026-06-01 | F | D | 15,889 | $14.31 | 829,044 | D | — | — | (F1) Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted stock units. |
| 3 | Common | Common Stock | 2026-06-01 | F | D | 11,241 | $14.31 | 817,803 | D | — | — | (F1) Represents shares withheld to satisfy tax withholding obligations upon the vesting of restricted stock units. |
| 4 | Common | Common Stock | 2026-06-01 | M | A | 40,379 | $0.00 | 858,182 | D | — | — | (F2) The restricted stock units vest and convert into shares on a one-for-one basis. |
| 5 | Derivative | Restricted Stock Units | 2026-06-01 | M | D | 40,379 | $0.00 | 0 | D | $0.00 · — to — | 40,379 Common Stock | (F2) The restricted stock units vest and convert into shares on a one-for-one basis. (F4) Grant of restricted stock units that vest in one-third increments on June 1 of each subsequent year after grant and settle in shares. (F4) Grant of restricted stock units that vest in one-third increments on June 1 of each subsequent year after grant and settle in shares. |