Piontek Gregg bought NPKI
June 1, 2026 · Form 4 insider transaction
Piontek Gregg bought 40,379 shares of NPK International Inc. at $0.00 per share, a transaction worth N/A. The trade was recorded as option exercise and disclosed on an SEC Form 4, filed 2 days after the transaction.
Direction
Acquired (buy-side)
Shares
40,379
Price
$0.00
Total value
N/A
InsiderPiontek Gregg
Role—
SecurityCommon Stock
Transaction codeM: Option exercise
Transaction dateJune 1, 2026
Filing dateJune 3, 2026
Shares owned after858,182
OwnershipDirect
10b5-1 planNo
AmendedNo
Footnotes
The restricted stock units vest and convert into shares on a one-for-one basis.