NPK International Inc.

Ownership Transactions Reported by 17 Insiders

Symbol
NPKI on NYSE
Industry
Oil & Gas Field Machinery & Equipment
Location
9320 Lakeside Boulevard, Suite 100, 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 $13.9M -$723K -4.94% Sep 3, 2025
Paul L. Howes President & CEO, Director $6.92M Aug 26, 2021
Gregg Piontek Senior Vice President and CFO $6.72M Jun 1, 2025
David A. Paterson VP & President, Fluids Systems, VP & President, Fluids Systems $3.91M Jun 1, 2024
Lori Briggs VP & President, Ind. Solutions $3.24M -$342K -9.56% Oct 1, 2025
Chipman Earle VP, General Counsel, CAO $2.47M Dec 14, 2022
Douglas L. White VP, CAO & Treasurer $2.38M Jun 14, 2025
Celeste Fruge VP, General Counsel $1.82M Jun 1, 2025
Donald W. Young Director $1.79M May 15, 2025
Roderick A. Larson Director $1.43M May 15, 2025
John C. Minge Director $1.41M +$53.8K +3.96% May 15, 2025
Michael A. Lewis Director $1.4M -$38.1K -2.65% Aug 25, 2025
Rose M. Robeson Director $1.23M May 15, 2025
G. Stephen Finley Director $1.05M May 20, 2021
Claudia M. Meer Director $936K +$31.7K +3.5% May 19, 2025
Anthony James Best Director $908K May 19, 2022
Joseph A. Cutillo Director $159K +$100K +170% May 15, 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.