Matthew Lanigan, Director, President & CEO, on June 03, 2026, sold 167,375 shares in NPK International (NPKI) for $2,415,907. Following the Form 4 filing with the SEC, Lanigan has control over a total of 1,024,948 common shares of the company, with 254,699 shares held directly and 770,249 controlled indirectly.
SEC Filing:
https://www.sec.gov/Archives/edgar/data/71829/000167297826000006/xslF345X05/edgardoc.xml