$ Value
$508K
Shares
35,000
Price
$15
Filed
Apr 3
Insider
Name
Piontek Gregg
Title
Senior Vice President and CFO
CIK
0001418328
Roles
Transaction Details
Transaction Date
2026-04-01
Code
S
Table
Non-Derivative
Ownership
Direct
Equity Swap
No
Shares After
834,326
Footnotes
The reported sale of 35,000 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 3, 2025. | 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 $14.68, 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. | These shares are indirectly held by Trust.
Filing Info
Piontek Gregg's History
| Date | Ticker | Type | Value |
|---|---|---|---|
| 2026-04-09 | NPKI | ▼ | $226K |
| 2026-04-01 | NPKI | ▼ | $508K |
| 2026-03-25 | NPKI | ▼ | $225K |
| 2025-06-01 | NPKI | M | $0 |
| 2025-06-01 | NPKI | F | $139K |
| 2025-06-01 | NPKI | F | $129K |
| 2025-06-01 | NPKI | F | $72K |
| 2025-06-01 | NPKI | M | $0 |
| 2025-06-01 | NPKI | M | $0 |
| 2025-06-01 | NPKI | M | $0 |
Other Insiders at NPKI (90d)
| Insider | Bought | Sold | Last |
|---|---|---|---|
|
Piontek Gregg
Senior Vice President and CFO
|
— | $451K | 2026-04-09 |