Form 4 for NPKI NPK International Inc.
Accepted 2026-06-03 18:55:00 ET · period of report 2026-06-01 · accession 0001672978-26-000004 · 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 18:55 | 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 |
| D | 2026-06-03 18:55 | 2026-06-01 | NPKI | LANIGAN MATTHEW | Pres, CEO, Dir | M - OptEx | $0.00 | -100.2K | 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 | 22,232 | $14.31 | 389,203 | 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 | 27,894 | $14.31 | 361,309 | 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 | 39,423 | $14.31 | 321,886 | 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 | 100,188 | $0.00 | 422,074 | 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 | 100,188 | $0.00 | 0 | D | $0.00 · — to — | 100,188 Common Stock | (F2) The restricted stock units vest and convert into shares on a one-for-one basis. (F3) Grant of restricted stock units that vest in one-third increments on June 1 of each subsequent year after grant and settle in shares. (F3) Grant of restricted stock units that vest in one-third increments on June 1 of each subsequent year after grant and settle in shares. |