March 16, 2026 · Form 4 insider transaction
Fruge Mary Celeste bought 1,000 shares of NPK INTERNATIONAL INC at $4.32 per share, a transaction worth $4.3K. The trade was recorded as option exercise under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 2 days after the transaction.
The reported exercise of 1,000 options and subsequent sale of the shares acquired upon exercise occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 5, 2025.