Form 4 Tracker
Matthew Lanigan

Director, President & CEO · 3 filings · Latest: Jun 3, 2026

NPK International Inc.
TickerOwnerRelationshipDateTransactionCost#SharesValue ($)#Shares TotalSEC Form 4
NPKI
Matthew LaniganDirector, President & CEOJun 3, 2026
Sale
$14.43167,375$2.4M254,699
NPKI
Matthew LaniganDirector, President & CEOJun 1, 2026
Option Exercise
$0.00100,188422,074
NPKI
Matthew LaniganDirector, President & CEOJun 1, 2026
Tax Withholding
$14.3189,549$1.3M321,886
NPKI
Matthew LaniganDirector, President & CEOMay 19, 2026
Grant/Award
$0.0085,771411,435