John C Minge bought $139K of NPKI stock

John C Minge, Dir of NPK International Inc. (NPKI), bought 15,000 shares of NPKI stock worth $139K, per an SEC Form 4 filed Nov 4, 2026.

It was an open-market purchase.

The trade happened on Nov 2, 2026, 2 days before it was made public.

NPKI has moved -2.6% since the trade date, from $9.16 to $8.93 (Nov 9, 2026 close).