May 20, 2026 · Form 4 insider transaction
ROBESON ROSE M bought 10,862 shares of NPK International Inc. at $0.00 per share, a transaction worth N/A. The trade was recorded as grant or award and disclosed on an SEC Form 4, filed 1 day after the transaction.
The shares will vest on the earlier of the first anniversary of the date of grant or the day prior to the next annual stockholders meeting.