Form 4 for NPKI NPK International Inc.
Accepted 2026-06-03 18:51:45 ET · period of report 2026-06-01 · accession 0001880836-26-000004 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| DT | 2026-06-03 18:51 | 2026-06-01 | NPKI | Briggs Lori | VP, Pres, Ind. Solutions | M - OptEx | $0.00 | -24.3K | 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 | 5,401 | $14.31 | 257,950 | 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 | 9,577 | $14.31 | 248,373 | 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 | 6,777 | $14.31 | 241,596 | 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 | 24,340 | $0.00 | 265,936 | D | — | — | (F2) The restricted stock units vest and convert into shares on a one-for-one basis. |
| 5 | Common | Common Stock | 2026-06-02 | S | D | 10,446 | $14.58 | 255,490 | D | — | — | (F3) The reported sale of 10,446 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 15, 2025. (F4) The price reported is the weighted average price. These shares were sold in multiple transactions in the open market at prices ranging from $14.33 to $14.74, inclusive. The reporting person undertakes to provide to NPK International Inc., any security holder of NPK International Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) to this Form 4. |
| 6 | Derivative | Restricted Stock Units | 2026-06-01 | M | D | 24,340 | $0.00 | 0 | D | $0.00 · — to — | 24,340 Common Stock | (F2) The restricted stock units vest and convert into shares on a one-for-one basis. (F5) Grant of restricted stock units that vest in one-third increments on June 1 of each subsequent year after grant and settle in shares. (F5) Grant of restricted stock units that vest in one-third increments on June 1 of each subsequent year after grant and settle in shares. |