PIONTEK GREGG

PrivateCIK: 1418328
Location

THE WOODLANDS, TX

PIONTEK GREGG (Senior Vice President and CFO) sold 10.9% of their position (108.59K shares) of NPK INTERNATIONAL INC. on the open market

Open‑market sale worth $1.53M — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 2 sales
InsiderPIONTEK GREGGCIK 1418328
IssuerNPK INTERNATIONAL INC.CIK 71829
Officer· Senior Vice President and CFO
Since Mar 2026
-108.59K
Net shares
Net seller
$1.53M
Total sold
2
Open market trades
0B · 2S
4
Total transactions
73.59K acquired · 182.18K disposed
Non-Derivative Transactions3

Common Stock

Direct
M · Option Exercise

Shares

+73.59K

Price / share

$4.32

Trade value

$317.91K

% of position

8.0%
3/4/2026
919.33K992.92K

Common Stock

Direct
S · Sale

Shares

73.59K

Price / share

$14.10

Trade value

$1.04M

% of position

7.4%
3/4/2026
992.92K919.33K

Common Stock

Direct
S · Sale

Shares

35K

Price / share

$14.02

Trade value

$490.59K

% of position

3.8%
3/4/2026
919.33K884.33K
Total

Net shares

35K

Net value

-$1.21M

Derivative Transactions1

Non-Qualified Stock Option (right to buy)

Direct
M · Option Exercise
Converts to

Common Stock

73.59K shares

Shares

73.59K

Strike price

4.32

Held after

0.00

Exercisable

3/4/2026
Non-Derivative Holdings (Post-Transaction)1

Common Stock

Indirect
Shares owned65K
Total
65K indirect65K
Derivative Holdings (Post-Transaction)0
No derivative holdings reported
PIONTEK GREGG — Insider Transaction (Form 4) Filed Mar 5, 2026 | Finecho