Insider Transactions Reported by 17 Insiders of NPK International Inc.

Symbol
NPKI on NYSE
Location
The Woodlands, TX

Insiders trading volume in the past year

NPK International Inc. executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
MATTHEW LANIGAN President & CEO, Director $14,938,067 -$722,916 -4.6% 03 Oct 2025
Paul L. Howes President & CEO, Director $6,924,939 26 Aug 2021
Gregg Piontek Senior Vice President and CFO $6,716,041 01 Jun 2025
DAVID A. PATERSON VP & President, Fluids Systems, VP & President, Fluids Systems $3,910,637 01 Jun 2024
Lori Briggs VP & President, Ind. Solutions $3,240,797 -$342,408 -9.6% 01 Oct 2025
Chipman Earle VP, General Counsel, CAO $2,471,827 14 Dec 2022
DOUGLAS L. WHITE VP, CAO & Treasurer $2,383,178 14 Jun 2025
Celeste Fruge VP, General Counsel $1,817,786 01 Jun 2025
Donald W. Young Director $1,787,905 15 May 2025
Michael A. Lewis Director $1,600,165 -$62,268 -3.7% 24 Nov 2025
RODERICK A. LARSON Director $1,430,300 15 May 2025
JOHN C. MINGE Director $1,410,958 +$53,800 +4% 15 May 2025
ROSE M. ROBESON Director $1,232,138 15 May 2025
G. STEPHEN FINLEY Director $1,051,385 20 May 2021
Claudia M. Meer Director $935,629 +$31,680 +3.5% 19 May 2025
ANTHONY JAMES BEST Director $907,598 19 May 2022
JOSEPH A. CUTILLO Director $158,682 +$99,998 +170% 15 May 2025

Recent Insider Transactions by Companies or Individuals for NPK International Inc.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.